Adding upstream version 15.5.upstream/15.5

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

24 files changed, 2058 insertions, 0 deletions

diff --git a/src/include/parser/.gitignore b/src/include/parser/.gitignore
new file mode 100644
index 0000000..19ea955
--- /dev/null
+++ b/src/include/parser/.gitignore
@@ -0,0 +1 @@
+/gram.h
diff --git a/src/include/parser/analyze.h b/src/include/parser/analyze.h
new file mode 100644
index 0000000..2a255fd
--- /dev/null
+++ b/src/include/parser/analyze.h
@@ -0,0 +1,64 @@
+/*-------------------------------------------------------------------------
+ *
+ * analyze.h
+ *		parse analysis for optimizable statements
+ *
+ *
+ * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/parser/analyze.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef ANALYZE_H
+#define ANALYZE_H
+
+#include "nodes/params.h"
+#include "parser/parse_node.h"
+#include "utils/queryjumble.h"
+
+/* Hook for plugins to get control at end of parse analysis */
+typedef void (*post_parse_analyze_hook_type) (ParseState *pstate,
+											  Query *query,
+											  JumbleState *jstate);
+extern PGDLLIMPORT post_parse_analyze_hook_type post_parse_analyze_hook;
+
+
+extern Query *parse_analyze_fixedparams(RawStmt *parseTree, const char *sourceText,
+										const Oid *paramTypes, int numParams, QueryEnvironment *queryEnv);
+extern Query *parse_analyze_varparams(RawStmt *parseTree, const char *sourceText,
+									  Oid **paramTypes, int *numParams, QueryEnvironment *queryEnv);
+extern Query *parse_analyze_withcb(RawStmt *parseTree, const char *sourceText,
+								   ParserSetupHook parserSetup,
+								   void *parserSetupArg,
+								   QueryEnvironment *queryEnv);
+
+extern Query *parse_sub_analyze(Node *parseTree, ParseState *parentParseState,
+								CommonTableExpr *parentCTE,
+								bool locked_from_parent,
+								bool resolve_unknowns);
+
+extern List *transformInsertRow(ParseState *pstate, List *exprlist,
+								List *stmtcols, List *icolumns, List *attrnos,
+								bool strip_indirection);
+extern List *transformUpdateTargetList(ParseState *pstate,
+									   List *targetList);
+extern Query *transformTopLevelStmt(ParseState *pstate, RawStmt *parseTree);
+extern Query *transformStmt(ParseState *pstate, Node *parseTree);
+
+extern bool stmt_requires_parse_analysis(RawStmt *parseTree);
+extern bool analyze_requires_snapshot(RawStmt *parseTree);
+
+extern const char *LCS_asString(LockClauseStrength strength);
+extern void CheckSelectLocking(Query *qry, LockClauseStrength strength);
+extern void applyLockingClause(Query *qry, Index rtindex,
+							   LockClauseStrength strength,
+							   LockWaitPolicy waitPolicy, bool pushedDown);
+
+extern List *BuildOnConflictExcludedTargetlist(Relation targetrel,
+											   Index exclRelIndex);
+
+extern SortGroupClause *makeSortGroupClauseForSetOp(Oid rescoltype, bool require_hash);
+
+#endif							/* ANALYZE_H */
diff --git a/src/include/parser/gramparse.h b/src/include/parser/gramparse.h
new file mode 100644
index 0000000..d9d4ac5
--- /dev/null
+++ b/src/include/parser/gramparse.h
@@ -0,0 +1,75 @@
+/*-------------------------------------------------------------------------
+ *
+ * gramparse.h
+ *		Shared definitions for the "raw" parser (flex and bison phases only)
+ *
+ * NOTE: this file is only meant to be included in the core parsing files,
+ * ie, parser.c, gram.y, scan.l, and src/common/keywords.c.
+ * Definitions that are needed outside the core parser should be in parser.h.
+ *
+ *
+ * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/parser/gramparse.h
+ *
+ *-------------------------------------------------------------------------
+ */
+
+#ifndef GRAMPARSE_H
+#define GRAMPARSE_H
+
+#include "nodes/parsenodes.h"
+#include "parser/scanner.h"
+
+/*
+ * NB: include gram.h only AFTER including scanner.h, because scanner.h
+ * is what #defines YYLTYPE.
+ */
+#include "parser/gram.h"
+
+/*
+ * The YY_EXTRA data that a flex scanner allows us to pass around.  Private
+ * state needed for raw parsing/lexing goes here.
+ */
+typedef struct base_yy_extra_type
+{
+	/*
+	 * Fields used by the core scanner.
+	 */
+	core_yy_extra_type core_yy_extra;
+
+	/*
+	 * State variables for base_yylex().
+	 */
+	bool		have_lookahead; /* is lookahead info valid? */
+	int			lookahead_token;	/* one-token lookahead */
+	core_YYSTYPE lookahead_yylval;	/* yylval for lookahead token */
+	YYLTYPE		lookahead_yylloc;	/* yylloc for lookahead token */
+	char	   *lookahead_end;	/* end of current token */
+	char		lookahead_hold_char;	/* to be put back at *lookahead_end */
+
+	/*
+	 * State variables that belong to the grammar.
+	 */
+	List	   *parsetree;		/* final parse result is delivered here */
+} base_yy_extra_type;
+
+/*
+ * In principle we should use yyget_extra() to fetch the yyextra field
+ * from a yyscanner struct.  However, flex always puts that field first,
+ * and this is sufficiently performance-critical to make it seem worth
+ * cheating a bit to use an inline macro.
+ */
+#define pg_yyget_extra(yyscanner) (*((base_yy_extra_type **) (yyscanner)))
+
+
+/* from parser.c */
+extern int	base_yylex(YYSTYPE *lvalp, YYLTYPE *llocp,
+					   core_yyscan_t yyscanner);
+
+/* from gram.y */
+extern void parser_init(base_yy_extra_type *yyext);
+extern int	base_yyparse(core_yyscan_t yyscanner);
+
+#endif							/* GRAMPARSE_H */
diff --git a/src/include/parser/kwlist.h b/src/include/parser/kwlist.h
new file mode 100644
index 0000000..65ffa89
--- /dev/null
+++ b/src/include/parser/kwlist.h
@@ -0,0 +1,487 @@
+/*-------------------------------------------------------------------------
+ *
+ * kwlist.h
+ *
+ * The keyword lists are kept in their own source files for use by
+ * automatic tools.  The exact representation of a keyword is determined
+ * by the PG_KEYWORD macro, which is not defined in this file; it can
+ * be defined by the caller for special purposes.
+ *
+ * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * IDENTIFICATION
+ *	  src/include/parser/kwlist.h
+ *
+ *-------------------------------------------------------------------------
+ */
+
+/* there is deliberately not an #ifndef KWLIST_H here */
+
+/*
+ * List of keyword (name, token-value, category, bare-label-status) entries.
+ *
+ * Note: gen_keywordlist.pl requires the entries to appear in ASCII order.
+ */
+
+/* name, value, category, is-bare-label */
+PG_KEYWORD("abort", ABORT_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("absolute", ABSOLUTE_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("access", ACCESS, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("action", ACTION, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("add", ADD_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("admin", ADMIN, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("after", AFTER, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("aggregate", AGGREGATE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("all", ALL, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("also", ALSO, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("alter", ALTER, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("always", ALWAYS, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("analyse", ANALYSE, RESERVED_KEYWORD, BARE_LABEL)		/* British spelling */
+PG_KEYWORD("analyze", ANALYZE, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("and", AND, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("any", ANY, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("array", ARRAY, RESERVED_KEYWORD, AS_LABEL)
+PG_KEYWORD("as", AS, RESERVED_KEYWORD, AS_LABEL)
+PG_KEYWORD("asc", ASC, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("asensitive", ASENSITIVE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("assertion", ASSERTION, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("assignment", ASSIGNMENT, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("asymmetric", ASYMMETRIC, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("at", AT, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("atomic", ATOMIC, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("attach", ATTACH, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("attribute", ATTRIBUTE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("authorization", AUTHORIZATION, TYPE_FUNC_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("backward", BACKWARD, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("before", BEFORE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("begin", BEGIN_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("between", BETWEEN, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("bigint", BIGINT, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("binary", BINARY, TYPE_FUNC_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("bit", BIT, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("boolean", BOOLEAN_P, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("both", BOTH, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("breadth", BREADTH, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("by", BY, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("cache", CACHE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("call", CALL, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("called", CALLED, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("cascade", CASCADE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("cascaded", CASCADED, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("case", CASE, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("cast", CAST, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("catalog", CATALOG_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("chain", CHAIN, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("char", CHAR_P, COL_NAME_KEYWORD, AS_LABEL)
+PG_KEYWORD("character", CHARACTER, COL_NAME_KEYWORD, AS_LABEL)
+PG_KEYWORD("characteristics", CHARACTERISTICS, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("check", CHECK, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("checkpoint", CHECKPOINT, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("class", CLASS, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("close", CLOSE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("cluster", CLUSTER, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("coalesce", COALESCE, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("collate", COLLATE, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("collation", COLLATION, TYPE_FUNC_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("column", COLUMN, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("columns", COLUMNS, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("comment", COMMENT, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("comments", COMMENTS, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("commit", COMMIT, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("committed", COMMITTED, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("compression", COMPRESSION, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("concurrently", CONCURRENTLY, TYPE_FUNC_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("configuration", CONFIGURATION, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("conflict", CONFLICT, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("connection", CONNECTION, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("constraint", CONSTRAINT, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("constraints", CONSTRAINTS, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("content", CONTENT_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("continue", CONTINUE_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("conversion", CONVERSION_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("copy", COPY, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("cost", COST, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("create", CREATE, RESERVED_KEYWORD, AS_LABEL)
+PG_KEYWORD("cross", CROSS, TYPE_FUNC_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("csv", CSV, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("cube", CUBE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("current", CURRENT_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("current_catalog", CURRENT_CATALOG, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("current_date", CURRENT_DATE, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("current_role", CURRENT_ROLE, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("current_schema", CURRENT_SCHEMA, TYPE_FUNC_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("current_time", CURRENT_TIME, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("current_timestamp", CURRENT_TIMESTAMP, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("current_user", CURRENT_USER, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("cursor", CURSOR, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("cycle", CYCLE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("data", DATA_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("database", DATABASE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("day", DAY_P, UNRESERVED_KEYWORD, AS_LABEL)
+PG_KEYWORD("deallocate", DEALLOCATE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("dec", DEC, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("decimal", DECIMAL_P, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("declare", DECLARE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("default", DEFAULT, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("defaults", DEFAULTS, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("deferrable", DEFERRABLE, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("deferred", DEFERRED, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("definer", DEFINER, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("delete", DELETE_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("delimiter", DELIMITER, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("delimiters", DELIMITERS, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("depends", DEPENDS, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("depth", DEPTH, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("desc", DESC, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("detach", DETACH, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("dictionary", DICTIONARY, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("disable", DISABLE_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("discard", DISCARD, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("distinct", DISTINCT, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("do", DO, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("document", DOCUMENT_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("domain", DOMAIN_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("double", DOUBLE_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("drop", DROP, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("each", EACH, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("else", ELSE, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("enable", ENABLE_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("encoding", ENCODING, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("encrypted", ENCRYPTED, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("end", END_P, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("enum", ENUM_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("escape", ESCAPE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("event", EVENT, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("except", EXCEPT, RESERVED_KEYWORD, AS_LABEL)
+PG_KEYWORD("exclude", EXCLUDE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("excluding", EXCLUDING, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("exclusive", EXCLUSIVE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("execute", EXECUTE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("exists", EXISTS, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("explain", EXPLAIN, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("expression", EXPRESSION, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("extension", EXTENSION, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("external", EXTERNAL, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("extract", EXTRACT, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("false", FALSE_P, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("family", FAMILY, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("fetch", FETCH, RESERVED_KEYWORD, AS_LABEL)
+PG_KEYWORD("filter", FILTER, UNRESERVED_KEYWORD, AS_LABEL)
+PG_KEYWORD("finalize", FINALIZE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("first", FIRST_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("float", FLOAT_P, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("following", FOLLOWING, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("for", FOR, RESERVED_KEYWORD, AS_LABEL)
+PG_KEYWORD("force", FORCE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("foreign", FOREIGN, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("forward", FORWARD, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("freeze", FREEZE, TYPE_FUNC_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("from", FROM, RESERVED_KEYWORD, AS_LABEL)
+PG_KEYWORD("full", FULL, TYPE_FUNC_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("function", FUNCTION, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("functions", FUNCTIONS, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("generated", GENERATED, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("global", GLOBAL, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("grant", GRANT, RESERVED_KEYWORD, AS_LABEL)
+PG_KEYWORD("granted", GRANTED, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("greatest", GREATEST, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("group", GROUP_P, RESERVED_KEYWORD, AS_LABEL)
+PG_KEYWORD("grouping", GROUPING, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("groups", GROUPS, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("handler", HANDLER, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("having", HAVING, RESERVED_KEYWORD, AS_LABEL)
+PG_KEYWORD("header", HEADER_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("hold", HOLD, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("hour", HOUR_P, UNRESERVED_KEYWORD, AS_LABEL)
+PG_KEYWORD("identity", IDENTITY_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("if", IF_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("ilike", ILIKE, TYPE_FUNC_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("immediate", IMMEDIATE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("immutable", IMMUTABLE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("implicit", IMPLICIT_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("import", IMPORT_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("in", IN_P, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("include", INCLUDE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("including", INCLUDING, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("increment", INCREMENT, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("index", INDEX, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("indexes", INDEXES, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("inherit", INHERIT, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("inherits", INHERITS, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("initially", INITIALLY, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("inline", INLINE_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("inner", INNER_P, TYPE_FUNC_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("inout", INOUT, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("input", INPUT_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("insensitive", INSENSITIVE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("insert", INSERT, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("instead", INSTEAD, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("int", INT_P, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("integer", INTEGER, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("intersect", INTERSECT, RESERVED_KEYWORD, AS_LABEL)
+PG_KEYWORD("interval", INTERVAL, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("into", INTO, RESERVED_KEYWORD, AS_LABEL)
+PG_KEYWORD("invoker", INVOKER, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("is", IS, TYPE_FUNC_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("isnull", ISNULL, TYPE_FUNC_NAME_KEYWORD, AS_LABEL)
+PG_KEYWORD("isolation", ISOLATION, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("join", JOIN, TYPE_FUNC_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("key", KEY, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("label", LABEL, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("language", LANGUAGE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("large", LARGE_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("last", LAST_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("lateral", LATERAL_P, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("leading", LEADING, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("leakproof", LEAKPROOF, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("least", LEAST, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("left", LEFT, TYPE_FUNC_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("level", LEVEL, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("like", LIKE, TYPE_FUNC_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("limit", LIMIT, RESERVED_KEYWORD, AS_LABEL)
+PG_KEYWORD("listen", LISTEN, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("load", LOAD, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("local", LOCAL, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("localtime", LOCALTIME, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("localtimestamp", LOCALTIMESTAMP, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("location", LOCATION, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("lock", LOCK_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("locked", LOCKED, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("logged", LOGGED, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("mapping", MAPPING, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("match", MATCH, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("matched", MATCHED, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("materialized", MATERIALIZED, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("maxvalue", MAXVALUE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("merge", MERGE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("method", METHOD, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("minute", MINUTE_P, UNRESERVED_KEYWORD, AS_LABEL)
+PG_KEYWORD("minvalue", MINVALUE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("mode", MODE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("month", MONTH_P, UNRESERVED_KEYWORD, AS_LABEL)
+PG_KEYWORD("move", MOVE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("name", NAME_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("names", NAMES, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("national", NATIONAL, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("natural", NATURAL, TYPE_FUNC_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("nchar", NCHAR, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("new", NEW, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("next", NEXT, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("nfc", NFC, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("nfd", NFD, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("nfkc", NFKC, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("nfkd", NFKD, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("no", NO, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("none", NONE, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("normalize", NORMALIZE, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("normalized", NORMALIZED, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("not", NOT, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("nothing", NOTHING, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("notify", NOTIFY, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("notnull", NOTNULL, TYPE_FUNC_NAME_KEYWORD, AS_LABEL)
+PG_KEYWORD("nowait", NOWAIT, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("null", NULL_P, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("nullif", NULLIF, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("nulls", NULLS_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("numeric", NUMERIC, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("object", OBJECT_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("of", OF, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("off", OFF, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("offset", OFFSET, RESERVED_KEYWORD, AS_LABEL)
+PG_KEYWORD("oids", OIDS, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("old", OLD, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("on", ON, RESERVED_KEYWORD, AS_LABEL)
+PG_KEYWORD("only", ONLY, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("operator", OPERATOR, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("option", OPTION, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("options", OPTIONS, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("or", OR, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("order", ORDER, RESERVED_KEYWORD, AS_LABEL)
+PG_KEYWORD("ordinality", ORDINALITY, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("others", OTHERS, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("out", OUT_P, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("outer", OUTER_P, TYPE_FUNC_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("over", OVER, UNRESERVED_KEYWORD, AS_LABEL)
+PG_KEYWORD("overlaps", OVERLAPS, TYPE_FUNC_NAME_KEYWORD, AS_LABEL)
+PG_KEYWORD("overlay", OVERLAY, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("overriding", OVERRIDING, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("owned", OWNED, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("owner", OWNER, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("parallel", PARALLEL, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("parameter", PARAMETER, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("parser", PARSER, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("partial", PARTIAL, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("partition", PARTITION, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("passing", PASSING, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("password", PASSWORD, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("placing", PLACING, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("plans", PLANS, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("policy", POLICY, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("position", POSITION, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("preceding", PRECEDING, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("precision", PRECISION, COL_NAME_KEYWORD, AS_LABEL)
+PG_KEYWORD("prepare", PREPARE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("prepared", PREPARED, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("preserve", PRESERVE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("primary", PRIMARY, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("prior", PRIOR, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("privileges", PRIVILEGES, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("procedural", PROCEDURAL, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("procedure", PROCEDURE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("procedures", PROCEDURES, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("program", PROGRAM, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("publication", PUBLICATION, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("quote", QUOTE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("range", RANGE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("read", READ, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("real", REAL, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("reassign", REASSIGN, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("recheck", RECHECK, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("recursive", RECURSIVE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("ref", REF_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("references", REFERENCES, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("referencing", REFERENCING, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("refresh", REFRESH, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("reindex", REINDEX, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("relative", RELATIVE_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("release", RELEASE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("rename", RENAME, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("repeatable", REPEATABLE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("replace", REPLACE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("replica", REPLICA, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("reset", RESET, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("restart", RESTART, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("restrict", RESTRICT, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("return", RETURN, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("returning", RETURNING, RESERVED_KEYWORD, AS_LABEL)
+PG_KEYWORD("returns", RETURNS, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("revoke", REVOKE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("right", RIGHT, TYPE_FUNC_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("role", ROLE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("rollback", ROLLBACK, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("rollup", ROLLUP, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("routine", ROUTINE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("routines", ROUTINES, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("row", ROW, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("rows", ROWS, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("rule", RULE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("savepoint", SAVEPOINT, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("schema", SCHEMA, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("schemas", SCHEMAS, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("scroll", SCROLL, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("search", SEARCH, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("second", SECOND_P, UNRESERVED_KEYWORD, AS_LABEL)
+PG_KEYWORD("security", SECURITY, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("select", SELECT, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("sequence", SEQUENCE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("sequences", SEQUENCES, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("serializable", SERIALIZABLE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("server", SERVER, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("session", SESSION, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("session_user", SESSION_USER, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("set", SET, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("setof", SETOF, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("sets", SETS, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("share", SHARE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("show", SHOW, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("similar", SIMILAR, TYPE_FUNC_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("simple", SIMPLE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("skip", SKIP, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("smallint", SMALLINT, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("snapshot", SNAPSHOT, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("some", SOME, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("sql", SQL_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("stable", STABLE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("standalone", STANDALONE_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("start", START, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("statement", STATEMENT, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("statistics", STATISTICS, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("stdin", STDIN, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("stdout", STDOUT, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("storage", STORAGE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("stored", STORED, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("strict", STRICT_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("strip", STRIP_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("subscription", SUBSCRIPTION, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("substring", SUBSTRING, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("support", SUPPORT, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("symmetric", SYMMETRIC, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("sysid", SYSID, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("system", SYSTEM_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("table", TABLE, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("tables", TABLES, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("tablesample", TABLESAMPLE, TYPE_FUNC_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("tablespace", TABLESPACE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("temp", TEMP, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("template", TEMPLATE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("temporary", TEMPORARY, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("text", TEXT_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("then", THEN, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("ties", TIES, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("time", TIME, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("timestamp", TIMESTAMP, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("to", TO, RESERVED_KEYWORD, AS_LABEL)
+PG_KEYWORD("trailing", TRAILING, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("transaction", TRANSACTION, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("transform", TRANSFORM, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("treat", TREAT, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("trigger", TRIGGER, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("trim", TRIM, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("true", TRUE_P, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("truncate", TRUNCATE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("trusted", TRUSTED, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("type", TYPE_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("types", TYPES_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("uescape", UESCAPE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("unbounded", UNBOUNDED, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("uncommitted", UNCOMMITTED, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("unencrypted", UNENCRYPTED, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("union", UNION, RESERVED_KEYWORD, AS_LABEL)
+PG_KEYWORD("unique", UNIQUE, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("unknown", UNKNOWN, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("unlisten", UNLISTEN, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("unlogged", UNLOGGED, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("until", UNTIL, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("update", UPDATE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("user", USER, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("using", USING, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("vacuum", VACUUM, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("valid", VALID, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("validate", VALIDATE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("validator", VALIDATOR, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("value", VALUE_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("values", VALUES, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("varchar", VARCHAR, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("variadic", VARIADIC, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("varying", VARYING, UNRESERVED_KEYWORD, AS_LABEL)
+PG_KEYWORD("verbose", VERBOSE, TYPE_FUNC_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("version", VERSION_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("view", VIEW, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("views", VIEWS, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("volatile", VOLATILE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("when", WHEN, RESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("where", WHERE, RESERVED_KEYWORD, AS_LABEL)
+PG_KEYWORD("whitespace", WHITESPACE_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("window", WINDOW, RESERVED_KEYWORD, AS_LABEL)
+PG_KEYWORD("with", WITH, RESERVED_KEYWORD, AS_LABEL)
+PG_KEYWORD("within", WITHIN, UNRESERVED_KEYWORD, AS_LABEL)
+PG_KEYWORD("without", WITHOUT, UNRESERVED_KEYWORD, AS_LABEL)
+PG_KEYWORD("work", WORK, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("wrapper", WRAPPER, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("write", WRITE, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("xml", XML_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("xmlattributes", XMLATTRIBUTES, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("xmlconcat", XMLCONCAT, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("xmlelement", XMLELEMENT, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("xmlexists", XMLEXISTS, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("xmlforest", XMLFOREST, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("xmlnamespaces", XMLNAMESPACES, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("xmlparse", XMLPARSE, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("xmlpi", XMLPI, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("xmlroot", XMLROOT, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("xmlserialize", XMLSERIALIZE, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("xmltable", XMLTABLE, COL_NAME_KEYWORD, BARE_LABEL)
+PG_KEYWORD("year", YEAR_P, UNRESERVED_KEYWORD, AS_LABEL)
+PG_KEYWORD("yes", YES_P, UNRESERVED_KEYWORD, BARE_LABEL)
+PG_KEYWORD("zone", ZONE, UNRESERVED_KEYWORD, BARE_LABEL)
diff --git a/src/include/parser/parse_agg.h b/src/include/parser/parse_agg.h
new file mode 100644
index 0000000..c56822f
--- /dev/null
+++ b/src/include/parser/parse_agg.h
@@ -0,0 +1,63 @@
+/*-------------------------------------------------------------------------
+ *
+ * parse_agg.h
+ *	  handle aggregates and window functions in parser
+ *
+ * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/parser/parse_agg.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PARSE_AGG_H
+#define PARSE_AGG_H
+
+#include "parser/parse_node.h"
+
+extern void transformAggregateCall(ParseState *pstate, Aggref *agg,
+								   List *args, List *aggorder,
+								   bool agg_distinct);
+
+extern Node *transformGroupingFunc(ParseState *pstate, GroupingFunc *g);
+
+extern void transformWindowFuncCall(ParseState *pstate, WindowFunc *wfunc,
+									WindowDef *windef);
+
+extern void parseCheckAggregates(ParseState *pstate, Query *qry);
+
+extern List *expand_grouping_sets(List *groupingSets, bool groupDistinct, int limit);
+
+extern int	get_aggregate_argtypes(Aggref *aggref, Oid *inputTypes);
+
+extern Oid	resolve_aggregate_transtype(Oid aggfuncid,
+										Oid aggtranstype,
+										Oid *inputTypes,
+										int numArguments);
+
+extern void build_aggregate_transfn_expr(Oid *agg_input_types,
+										 int agg_num_inputs,
+										 int agg_num_direct_inputs,
+										 bool agg_variadic,
+										 Oid agg_state_type,
+										 Oid agg_input_collation,
+										 Oid transfn_oid,
+										 Oid invtransfn_oid,
+										 Expr **transfnexpr,
+										 Expr **invtransfnexpr);
+
+extern void build_aggregate_serialfn_expr(Oid serialfn_oid,
+										  Expr **serialfnexpr);
+
+extern void build_aggregate_deserialfn_expr(Oid deserialfn_oid,
+											Expr **deserialfnexpr);
+
+extern void build_aggregate_finalfn_expr(Oid *agg_input_types,
+										 int num_finalfn_inputs,
+										 Oid agg_state_type,
+										 Oid agg_result_type,
+										 Oid agg_input_collation,
+										 Oid finalfn_oid,
+										 Expr **finalfnexpr);
+
+#endif							/* PARSE_AGG_H */
diff --git a/src/include/parser/parse_clause.h b/src/include/parser/parse_clause.h
new file mode 100644
index 0000000..2495c30
--- /dev/null
+++ b/src/include/parser/parse_clause.h
@@ -0,0 +1,54 @@
+/*-------------------------------------------------------------------------
+ *
+ * parse_clause.h
+ *	  handle clauses in parser
+ *
+ *
+ * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/parser/parse_clause.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PARSE_CLAUSE_H
+#define PARSE_CLAUSE_H
+
+#include "parser/parse_node.h"
+
+extern void transformFromClause(ParseState *pstate, List *frmList);
+extern int	setTargetTable(ParseState *pstate, RangeVar *relation,
+						   bool inh, bool alsoSource, AclMode requiredPerms);
+
+extern Node *transformWhereClause(ParseState *pstate, Node *clause,
+								  ParseExprKind exprKind, const char *constructName);
+extern Node *transformLimitClause(ParseState *pstate, Node *clause,
+								  ParseExprKind exprKind, const char *constructName,
+								  LimitOption limitOption);
+extern List *transformGroupClause(ParseState *pstate, List *grouplist,
+								  List **groupingSets,
+								  List **targetlist, List *sortClause,
+								  ParseExprKind exprKind, bool useSQL99);
+extern List *transformSortClause(ParseState *pstate, List *orderlist,
+								 List **targetlist, ParseExprKind exprKind,
+								 bool useSQL99);
+
+extern List *transformWindowDefinitions(ParseState *pstate,
+										List *windowdefs,
+										List **targetlist);
+
+extern List *transformDistinctClause(ParseState *pstate,
+									 List **targetlist, List *sortClause, bool is_agg);
+extern List *transformDistinctOnClause(ParseState *pstate, List *distinctlist,
+									   List **targetlist, List *sortClause);
+extern void transformOnConflictArbiter(ParseState *pstate,
+									   OnConflictClause *onConflictClause,
+									   List **arbiterExpr, Node **arbiterWhere,
+									   Oid *constraint);
+
+extern List *addTargetToSortList(ParseState *pstate, TargetEntry *tle,
+								 List *sortlist, List *targetlist, SortBy *sortby);
+extern Index assignSortGroupRef(TargetEntry *tle, List *tlist);
+extern bool targetIsInSortList(TargetEntry *tle, Oid sortop, List *sortList);
+
+#endif							/* PARSE_CLAUSE_H */
diff --git a/src/include/parser/parse_coerce.h b/src/include/parser/parse_coerce.h
new file mode 100644
index 0000000..b105c7d
--- /dev/null
+++ b/src/include/parser/parse_coerce.h
@@ -0,0 +1,100 @@
+/*-------------------------------------------------------------------------
+ *
+ * parse_coerce.h
+ *	Routines for type coercion.
+ *
+ *
+ * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/parser/parse_coerce.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PARSE_COERCE_H
+#define PARSE_COERCE_H
+
+#include "parser/parse_node.h"
+
+
+/* Type categories (see TYPCATEGORY_xxx symbols in catalog/pg_type.h) */
+typedef char TYPCATEGORY;
+
+/* Result codes for find_coercion_pathway */
+typedef enum CoercionPathType
+{
+	COERCION_PATH_NONE,			/* failed to find any coercion pathway */
+	COERCION_PATH_FUNC,			/* apply the specified coercion function */
+	COERCION_PATH_RELABELTYPE,	/* binary-compatible cast, no function */
+	COERCION_PATH_ARRAYCOERCE,	/* need an ArrayCoerceExpr node */
+	COERCION_PATH_COERCEVIAIO	/* need a CoerceViaIO node */
+} CoercionPathType;
+
+
+extern bool IsBinaryCoercible(Oid srctype, Oid targettype);
+extern bool IsPreferredType(TYPCATEGORY category, Oid type);
+extern TYPCATEGORY TypeCategory(Oid type);
+
+extern Node *coerce_to_target_type(ParseState *pstate,
+								   Node *expr, Oid exprtype,
+								   Oid targettype, int32 targettypmod,
+								   CoercionContext ccontext,
+								   CoercionForm cformat,
+								   int location);
+extern bool can_coerce_type(int nargs, const Oid *input_typeids, const Oid *target_typeids,
+							CoercionContext ccontext);
+extern Node *coerce_type(ParseState *pstate, Node *node,
+						 Oid inputTypeId, Oid targetTypeId, int32 targetTypeMod,
+						 CoercionContext ccontext, CoercionForm cformat, int location);
+extern Node *coerce_to_domain(Node *arg, Oid baseTypeId, int32 baseTypeMod,
+							  Oid typeId,
+							  CoercionContext ccontext, CoercionForm cformat, int location,
+							  bool hideInputCoercion);
+
+extern Node *coerce_to_boolean(ParseState *pstate, Node *node,
+							   const char *constructName);
+extern Node *coerce_to_specific_type(ParseState *pstate, Node *node,
+									 Oid targetTypeId,
+									 const char *constructName);
+
+extern Node *coerce_to_specific_type_typmod(ParseState *pstate, Node *node,
+											Oid targetTypeId, int32 targetTypmod,
+											const char *constructName);
+
+extern int	parser_coercion_errposition(ParseState *pstate,
+										int coerce_location,
+										Node *input_expr);
+
+extern Oid	select_common_type(ParseState *pstate, List *exprs,
+							   const char *context, Node **which_expr);
+extern Node *coerce_to_common_type(ParseState *pstate, Node *node,
+								   Oid targetTypeId,
+								   const char *context);
+extern bool verify_common_type(Oid common_type, List *exprs);
+
+extern int32 select_common_typmod(ParseState *pstate, List *exprs, Oid common_type);
+
+extern bool check_generic_type_consistency(const Oid *actual_arg_types,
+										   const Oid *declared_arg_types,
+										   int nargs);
+extern Oid	enforce_generic_type_consistency(const Oid *actual_arg_types,
+											 Oid *declared_arg_types,
+											 int nargs,
+											 Oid rettype,
+											 bool allow_poly);
+
+extern char *check_valid_polymorphic_signature(Oid ret_type,
+											   const Oid *declared_arg_types,
+											   int nargs);
+extern char *check_valid_internal_signature(Oid ret_type,
+											const Oid *declared_arg_types,
+											int nargs);
+
+extern CoercionPathType find_coercion_pathway(Oid targetTypeId,
+											  Oid sourceTypeId,
+											  CoercionContext ccontext,
+											  Oid *funcid);
+extern CoercionPathType find_typmod_coercion_function(Oid typeId,
+													  Oid *funcid);
+
+#endif							/* PARSE_COERCE_H */
diff --git a/src/include/parser/parse_collate.h b/src/include/parser/parse_collate.h
new file mode 100644
index 0000000..cd16aa0
--- /dev/null
+++ b/src/include/parser/parse_collate.h
@@ -0,0 +1,27 @@
+/*-------------------------------------------------------------------------
+ *
+ * parse_collate.h
+ *	Routines for assigning collation information.
+ *
+ *
+ * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/parser/parse_collate.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PARSE_COLLATE_H
+#define PARSE_COLLATE_H
+
+#include "parser/parse_node.h"
+
+extern void assign_query_collations(ParseState *pstate, Query *query);
+
+extern void assign_list_collations(ParseState *pstate, List *exprs);
+
+extern void assign_expr_collations(ParseState *pstate, Node *expr);
+
+extern Oid	select_common_collation(ParseState *pstate, List *exprs, bool none_ok);
+
+#endif							/* PARSE_COLLATE_H */
diff --git a/src/include/parser/parse_cte.h b/src/include/parser/parse_cte.h
new file mode 100644
index 0000000..cb61b79
--- /dev/null
+++ b/src/include/parser/parse_cte.h
@@ -0,0 +1,24 @@
+/*-------------------------------------------------------------------------
+ *
+ * parse_cte.h
+ *	  handle CTEs (common table expressions) in parser
+ *
+ *
+ * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/parser/parse_cte.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PARSE_CTE_H
+#define PARSE_CTE_H
+
+#include "parser/parse_node.h"
+
+extern List *transformWithClause(ParseState *pstate, WithClause *withClause);
+
+extern void analyzeCTETargetList(ParseState *pstate, CommonTableExpr *cte,
+								 List *tlist);
+
+#endif							/* PARSE_CTE_H */
diff --git a/src/include/parser/parse_enr.h b/src/include/parser/parse_enr.h
new file mode 100644
index 0000000..a3c05fd
--- /dev/null
+++ b/src/include/parser/parse_enr.h
@@ -0,0 +1,22 @@
+/*-------------------------------------------------------------------------
+ *
+ * parse_enr.h
+ *		Internal definitions for parser
+ *
+ *
+ * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/parser/parse_enr.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PARSE_ENR_H
+#define PARSE_ENR_H
+
+#include "parser/parse_node.h"
+
+extern bool name_matches_visible_ENR(ParseState *pstate, const char *refname);
+extern EphemeralNamedRelationMetadata get_visible_ENR(ParseState *pstate, const char *refname);
+
+#endif							/* PARSE_ENR_H */
diff --git a/src/include/parser/parse_expr.h b/src/include/parser/parse_expr.h
new file mode 100644
index 0000000..c8e5c57
--- /dev/null
+++ b/src/include/parser/parse_expr.h
@@ -0,0 +1,25 @@
+/*-------------------------------------------------------------------------
+ *
+ * parse_expr.h
+ *	  handle expressions in parser
+ *
+ * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/parser/parse_expr.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PARSE_EXPR_H
+#define PARSE_EXPR_H
+
+#include "parser/parse_node.h"
+
+/* GUC parameters */
+extern PGDLLIMPORT bool Transform_null_equals;
+
+extern Node *transformExpr(ParseState *pstate, Node *expr, ParseExprKind exprKind);
+
+extern const char *ParseExprKindName(ParseExprKind exprKind);
+
+#endif							/* PARSE_EXPR_H */
diff --git a/src/include/parser/parse_func.h b/src/include/parser/parse_func.h
new file mode 100644
index 0000000..8711e39
--- /dev/null
+++ b/src/include/parser/parse_func.h
@@ -0,0 +1,74 @@
+/*-------------------------------------------------------------------------
+ *
+ * parse_func.h
+ *
+ *
+ *
+ * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/parser/parse_func.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PARSE_FUNC_H
+#define PARSE_FUNC_H
+
+#include "catalog/namespace.h"
+#include "parser/parse_node.h"
+
+
+/* Result codes for func_get_detail */
+typedef enum
+{
+	FUNCDETAIL_NOTFOUND,		/* no matching function */
+	FUNCDETAIL_MULTIPLE,		/* too many matching functions */
+	FUNCDETAIL_NORMAL,			/* found a matching regular function */
+	FUNCDETAIL_PROCEDURE,		/* found a matching procedure */
+	FUNCDETAIL_AGGREGATE,		/* found a matching aggregate function */
+	FUNCDETAIL_WINDOWFUNC,		/* found a matching window function */
+	FUNCDETAIL_COERCION			/* it's a type coercion request */
+} FuncDetailCode;
+
+
+extern Node *ParseFuncOrColumn(ParseState *pstate, List *funcname, List *fargs,
+							   Node *last_srf, FuncCall *fn, bool proc_call,
+							   int location);
+
+extern FuncDetailCode func_get_detail(List *funcname,
+									  List *fargs, List *fargnames,
+									  int nargs, Oid *argtypes,
+									  bool expand_variadic, bool expand_defaults,
+									  bool include_out_arguments,
+									  Oid *funcid, Oid *rettype,
+									  bool *retset, int *nvargs, Oid *vatype,
+									  Oid **true_typeids, List **argdefaults);
+
+extern int	func_match_argtypes(int nargs,
+								Oid *input_typeids,
+								FuncCandidateList raw_candidates,
+								FuncCandidateList *candidates);
+
+extern FuncCandidateList func_select_candidate(int nargs,
+											   Oid *input_typeids,
+											   FuncCandidateList candidates);
+
+extern void make_fn_arguments(ParseState *pstate,
+							  List *fargs,
+							  Oid *actual_arg_types,
+							  Oid *declared_arg_types);
+
+extern const char *funcname_signature_string(const char *funcname, int nargs,
+											 List *argnames, const Oid *argtypes);
+extern const char *func_signature_string(List *funcname, int nargs,
+										 List *argnames, const Oid *argtypes);
+
+extern Oid	LookupFuncName(List *funcname, int nargs, const Oid *argtypes,
+						   bool missing_ok);
+extern Oid	LookupFuncWithArgs(ObjectType objtype, ObjectWithArgs *func,
+							   bool missing_ok);
+
+extern void check_srf_call_placement(ParseState *pstate, Node *last_srf,
+									 int location);
+
+#endif							/* PARSE_FUNC_H */
diff --git a/src/include/parser/parse_merge.h b/src/include/parser/parse_merge.h
new file mode 100644
index 0000000..1a1baa1
--- /dev/null
+++ b/src/include/parser/parse_merge.h
@@ -0,0 +1,21 @@
+/*-------------------------------------------------------------------------
+ *
+ * parse_merge.h
+ *		handle MERGE statement in parser
+ *
+ *
+ * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/parser/parse_merge.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PARSE_MERGE_H
+#define PARSE_MERGE_H
+
+#include "parser/parse_node.h"
+
+extern Query *transformMergeStmt(ParseState *pstate, MergeStmt *stmt);
+
+#endif							/* PARSE_MERGE_H */
diff --git a/src/include/parser/parse_node.h b/src/include/parser/parse_node.h
new file mode 100644
index 0000000..cf9c759
--- /dev/null
+++ b/src/include/parser/parse_node.h
@@ -0,0 +1,339 @@
+/*-------------------------------------------------------------------------
+ *
+ * parse_node.h
+ *		Internal definitions for parser
+ *
+ *
+ * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/parser/parse_node.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PARSE_NODE_H
+#define PARSE_NODE_H
+
+#include "nodes/parsenodes.h"
+#include "utils/queryenvironment.h"
+#include "utils/relcache.h"
+
+
+/* Forward references for some structs declared below */
+typedef struct ParseState ParseState;
+typedef struct ParseNamespaceItem ParseNamespaceItem;
+typedef struct ParseNamespaceColumn ParseNamespaceColumn;
+
+/*
+ * Expression kinds distinguished by transformExpr().  Many of these are not
+ * semantically distinct so far as expression transformation goes; rather,
+ * we distinguish them so that context-specific error messages can be printed.
+ *
+ * Note: EXPR_KIND_OTHER is not used in the core code, but is left for use
+ * by extension code that might need to call transformExpr().  The core code
+ * will not enforce any context-driven restrictions on EXPR_KIND_OTHER
+ * expressions, so the caller would have to check for sub-selects, aggregates,
+ * window functions, SRFs, etc if those need to be disallowed.
+ */
+typedef enum ParseExprKind
+{
+	EXPR_KIND_NONE = 0,			/* "not in an expression" */
+	EXPR_KIND_OTHER,			/* reserved for extensions */
+	EXPR_KIND_JOIN_ON,			/* JOIN ON */
+	EXPR_KIND_JOIN_USING,		/* JOIN USING */
+	EXPR_KIND_FROM_SUBSELECT,	/* sub-SELECT in FROM clause */
+	EXPR_KIND_FROM_FUNCTION,	/* function in FROM clause */
+	EXPR_KIND_WHERE,			/* WHERE */
+	EXPR_KIND_HAVING,			/* HAVING */
+	EXPR_KIND_FILTER,			/* FILTER */
+	EXPR_KIND_WINDOW_PARTITION, /* window definition PARTITION BY */
+	EXPR_KIND_WINDOW_ORDER,		/* window definition ORDER BY */
+	EXPR_KIND_WINDOW_FRAME_RANGE,	/* window frame clause with RANGE */
+	EXPR_KIND_WINDOW_FRAME_ROWS,	/* window frame clause with ROWS */
+	EXPR_KIND_WINDOW_FRAME_GROUPS,	/* window frame clause with GROUPS */
+	EXPR_KIND_SELECT_TARGET,	/* SELECT target list item */
+	EXPR_KIND_INSERT_TARGET,	/* INSERT target list item */
+	EXPR_KIND_UPDATE_SOURCE,	/* UPDATE assignment source item */
+	EXPR_KIND_UPDATE_TARGET,	/* UPDATE assignment target item */
+	EXPR_KIND_MERGE_WHEN,		/* MERGE WHEN [NOT] MATCHED condition */
+	EXPR_KIND_GROUP_BY,			/* GROUP BY */
+	EXPR_KIND_ORDER_BY,			/* ORDER BY */
+	EXPR_KIND_DISTINCT_ON,		/* DISTINCT ON */
+	EXPR_KIND_LIMIT,			/* LIMIT */
+	EXPR_KIND_OFFSET,			/* OFFSET */
+	EXPR_KIND_RETURNING,		/* RETURNING */
+	EXPR_KIND_VALUES,			/* VALUES */
+	EXPR_KIND_VALUES_SINGLE,	/* single-row VALUES (in INSERT only) */
+	EXPR_KIND_CHECK_CONSTRAINT, /* CHECK constraint for a table */
+	EXPR_KIND_DOMAIN_CHECK,		/* CHECK constraint for a domain */
+	EXPR_KIND_COLUMN_DEFAULT,	/* default value for a table column */
+	EXPR_KIND_FUNCTION_DEFAULT, /* default parameter value for function */
+	EXPR_KIND_INDEX_EXPRESSION, /* index expression */
+	EXPR_KIND_INDEX_PREDICATE,	/* index predicate */
+	EXPR_KIND_STATS_EXPRESSION, /* extended statistics expression */
+	EXPR_KIND_ALTER_COL_TRANSFORM,	/* transform expr in ALTER COLUMN TYPE */
+	EXPR_KIND_EXECUTE_PARAMETER,	/* parameter value in EXECUTE */
+	EXPR_KIND_TRIGGER_WHEN,		/* WHEN condition in CREATE TRIGGER */
+	EXPR_KIND_POLICY,			/* USING or WITH CHECK expr in policy */
+	EXPR_KIND_PARTITION_BOUND,	/* partition bound expression */
+	EXPR_KIND_PARTITION_EXPRESSION, /* PARTITION BY expression */
+	EXPR_KIND_CALL_ARGUMENT,	/* procedure argument in CALL */
+	EXPR_KIND_COPY_WHERE,		/* WHERE condition in COPY FROM */
+	EXPR_KIND_GENERATED_COLUMN, /* generation expression for a column */
+	EXPR_KIND_CYCLE_MARK,		/* cycle mark value */
+} ParseExprKind;
+
+
+/*
+ * Function signatures for parser hooks
+ */
+typedef Node *(*PreParseColumnRefHook) (ParseState *pstate, ColumnRef *cref);
+typedef Node *(*PostParseColumnRefHook) (ParseState *pstate, ColumnRef *cref, Node *var);
+typedef Node *(*ParseParamRefHook) (ParseState *pstate, ParamRef *pref);
+typedef Node *(*CoerceParamHook) (ParseState *pstate, Param *param,
+								  Oid targetTypeId, int32 targetTypeMod,
+								  int location);
+
+
+/*
+ * State information used during parse analysis
+ *
+ * parentParseState: NULL in a top-level ParseState.  When parsing a subquery,
+ * links to current parse state of outer query.
+ *
+ * p_sourcetext: source string that generated the raw parsetree being
+ * analyzed, or NULL if not available.  (The string is used only to
+ * generate cursor positions in error messages: we need it to convert
+ * byte-wise locations in parse structures to character-wise cursor
+ * positions.)
+ *
+ * p_rtable: list of RTEs that will become the rangetable of the query.
+ * Note that neither relname nor refname of these entries are necessarily
+ * unique; searching the rtable by name is a bad idea.
+ *
+ * p_joinexprs: list of JoinExpr nodes associated with p_rtable entries.
+ * This is one-for-one with p_rtable, but contains NULLs for non-join
+ * RTEs, and may be shorter than p_rtable if the last RTE(s) aren't joins.
+ *
+ * p_joinlist: list of join items (RangeTblRef and JoinExpr nodes) that
+ * will become the fromlist of the query's top-level FromExpr node.
+ *
+ * p_namespace: list of ParseNamespaceItems that represents the current
+ * namespace for table and column lookup.  (The RTEs listed here may be just
+ * a subset of the whole rtable.  See ParseNamespaceItem comments below.)
+ *
+ * p_lateral_active: true if we are currently parsing a LATERAL subexpression
+ * of this parse level.  This makes p_lateral_only namespace items visible,
+ * whereas they are not visible when p_lateral_active is FALSE.
+ *
+ * p_ctenamespace: list of CommonTableExprs (WITH items) that are visible
+ * at the moment.  This is entirely different from p_namespace because a CTE
+ * is not an RTE, rather "visibility" means you could make an RTE from it.
+ *
+ * p_future_ctes: list of CommonTableExprs (WITH items) that are not yet
+ * visible due to scope rules.  This is used to help improve error messages.
+ *
+ * p_parent_cte: CommonTableExpr that immediately contains the current query,
+ * if any.
+ *
+ * p_target_relation: target relation, if query is INSERT/UPDATE/DELETE/MERGE
+ *
+ * p_target_nsitem: target relation's ParseNamespaceItem.
+ *
+ * p_is_insert: true to process assignment expressions like INSERT, false
+ * to process them like UPDATE.  (Note this can change intra-statement, for
+ * cases like INSERT ON CONFLICT UPDATE.)
+ *
+ * p_windowdefs: list of WindowDefs representing WINDOW and OVER clauses.
+ * We collect these while transforming expressions and then transform them
+ * afterwards (so that any resjunk tlist items needed for the sort/group
+ * clauses end up at the end of the query tlist).  A WindowDef's location in
+ * this list, counting from 1, is the winref number to use to reference it.
+ *
+ * p_expr_kind: kind of expression we're currently parsing, as per enum above;
+ * EXPR_KIND_NONE when not in an expression.
+ *
+ * p_next_resno: next TargetEntry.resno to assign, starting from 1.
+ *
+ * p_multiassign_exprs: partially-processed MultiAssignRef source expressions.
+ *
+ * p_locking_clause: query's FOR UPDATE/FOR SHARE clause, if any.
+ *
+ * p_locked_from_parent: true if parent query level applies FOR UPDATE/SHARE
+ * to this subquery as a whole.
+ *
+ * p_resolve_unknowns: resolve unknown-type SELECT output columns as type TEXT
+ * (this is true by default).
+ *
+ * p_hasAggs, p_hasWindowFuncs, etc: true if we've found any of the indicated
+ * constructs in the query.
+ *
+ * p_last_srf: the set-returning FuncExpr or OpExpr most recently found in
+ * the query, or NULL if none.
+ *
+ * p_pre_columnref_hook, etc: optional parser hook functions for modifying the
+ * interpretation of ColumnRefs and ParamRefs.
+ *
+ * p_ref_hook_state: passthrough state for the parser hook functions.
+ */
+struct ParseState
+{
+	ParseState *parentParseState;	/* stack link */
+	const char *p_sourcetext;	/* source text, or NULL if not available */
+	List	   *p_rtable;		/* range table so far */
+	List	   *p_joinexprs;	/* JoinExprs for RTE_JOIN p_rtable entries */
+	List	   *p_joinlist;		/* join items so far (will become FromExpr
+								 * node's fromlist) */
+	List	   *p_namespace;	/* currently-referenceable RTEs (List of
+								 * ParseNamespaceItem) */
+	bool		p_lateral_active;	/* p_lateral_only items visible? */
+	List	   *p_ctenamespace; /* current namespace for common table exprs */
+	List	   *p_future_ctes;	/* common table exprs not yet in namespace */
+	CommonTableExpr *p_parent_cte;	/* this query's containing CTE */
+	Relation	p_target_relation;	/* INSERT/UPDATE/DELETE/MERGE target rel */
+	ParseNamespaceItem *p_target_nsitem;	/* target rel's NSItem, or NULL */
+	bool		p_is_insert;	/* process assignment like INSERT not UPDATE */
+	List	   *p_windowdefs;	/* raw representations of window clauses */
+	ParseExprKind p_expr_kind;	/* what kind of expression we're parsing */
+	int			p_next_resno;	/* next targetlist resno to assign */
+	List	   *p_multiassign_exprs;	/* junk tlist entries for multiassign */
+	List	   *p_locking_clause;	/* raw FOR UPDATE/FOR SHARE info */
+	bool		p_locked_from_parent;	/* parent has marked this subquery
+										 * with FOR UPDATE/FOR SHARE */
+	bool		p_resolve_unknowns; /* resolve unknown-type SELECT outputs as
+									 * type text */
+
+	QueryEnvironment *p_queryEnv;	/* curr env, incl refs to enclosing env */
+
+	/* Flags telling about things found in the query: */
+	bool		p_hasAggs;
+	bool		p_hasWindowFuncs;
+	bool		p_hasTargetSRFs;
+	bool		p_hasSubLinks;
+	bool		p_hasModifyingCTE;
+
+	Node	   *p_last_srf;		/* most recent set-returning func/op found */
+
+	/*
+	 * Optional hook functions for parser callbacks.  These are null unless
+	 * set up by the caller of make_parsestate.
+	 */
+	PreParseColumnRefHook p_pre_columnref_hook;
+	PostParseColumnRefHook p_post_columnref_hook;
+	ParseParamRefHook p_paramref_hook;
+	CoerceParamHook p_coerce_param_hook;
+	void	   *p_ref_hook_state;	/* common passthrough link for above */
+};
+
+/*
+ * An element of a namespace list.
+ *
+ * p_names contains the table name and column names exposed by this nsitem.
+ * (Typically it's equal to p_rte->eref, but for a JOIN USING alias it's
+ * equal to p_rte->join_using_alias.  Since the USING columns will be the
+ * join's first N columns, the net effect is just that we expose only those
+ * join columns via this nsitem.)
+ *
+ * p_rte and p_rtindex link to the underlying rangetable entry.
+ *
+ * The p_nscolumns array contains info showing how to construct Vars
+ * referencing the names appearing in the p_names->colnames list.
+ *
+ * Namespace items with p_rel_visible set define which RTEs are accessible by
+ * qualified names, while those with p_cols_visible set define which RTEs are
+ * accessible by unqualified names.  These sets are different because a JOIN
+ * without an alias does not hide the contained tables (so they must be
+ * visible for qualified references) but it does hide their columns
+ * (unqualified references to the columns refer to the JOIN, not the member
+ * tables, so we must not complain that such a reference is ambiguous).
+ * Various special RTEs such as NEW/OLD for rules may also appear with only
+ * one flag set.
+ *
+ * While processing the FROM clause, namespace items may appear with
+ * p_lateral_only set, meaning they are visible only to LATERAL
+ * subexpressions.  (The pstate's p_lateral_active flag tells whether we are
+ * inside such a subexpression at the moment.)	If p_lateral_ok is not set,
+ * it's an error to actually use such a namespace item.  One might think it
+ * would be better to just exclude such items from visibility, but the wording
+ * of SQL:2008 requires us to do it this way.  We also use p_lateral_ok to
+ * forbid LATERAL references to an UPDATE/DELETE target table.
+ *
+ * At no time should a namespace list contain two entries that conflict
+ * according to the rules in checkNameSpaceConflicts; but note that those
+ * are more complicated than "must have different alias names", so in practice
+ * code searching a namespace list has to check for ambiguous references.
+ */
+struct ParseNamespaceItem
+{
+	Alias	   *p_names;		/* Table and column names */
+	RangeTblEntry *p_rte;		/* The relation's rangetable entry */
+	int			p_rtindex;		/* The relation's index in the rangetable */
+	/* array of same length as p_names->colnames: */
+	ParseNamespaceColumn *p_nscolumns;	/* per-column data */
+	bool		p_rel_visible;	/* Relation name is visible? */
+	bool		p_cols_visible; /* Column names visible as unqualified refs? */
+	bool		p_lateral_only; /* Is only visible to LATERAL expressions? */
+	bool		p_lateral_ok;	/* If so, does join type allow use? */
+};
+
+/*
+ * Data about one column of a ParseNamespaceItem.
+ *
+ * We track the info needed to construct a Var referencing the column
+ * (but only for user-defined columns; system column references and
+ * whole-row references are handled separately).
+ *
+ * p_varno and p_varattno identify the semantic referent, which is a
+ * base-relation column unless the reference is to a join USING column that
+ * isn't semantically equivalent to either join input column (because it is a
+ * FULL join or the input column requires a type coercion).  In those cases
+ * p_varno and p_varattno refer to the JOIN RTE.
+ *
+ * p_varnosyn and p_varattnosyn are either identical to p_varno/p_varattno,
+ * or they specify the column's position in an aliased JOIN RTE that hides
+ * the semantic referent RTE's refname.  (That could be either the JOIN RTE
+ * in which this ParseNamespaceColumn entry exists, or some lower join level.)
+ *
+ * If an RTE contains a dropped column, its ParseNamespaceColumn struct
+ * is all-zeroes.  (Conventionally, test for p_varno == 0 to detect this.)
+ */
+struct ParseNamespaceColumn
+{
+	Index		p_varno;		/* rangetable index */
+	AttrNumber	p_varattno;		/* attribute number of the column */
+	Oid			p_vartype;		/* pg_type OID */
+	int32		p_vartypmod;	/* type modifier value */
+	Oid			p_varcollid;	/* OID of collation, or InvalidOid */
+	Index		p_varnosyn;		/* rangetable index of syntactic referent */
+	AttrNumber	p_varattnosyn;	/* attribute number of syntactic referent */
+	bool		p_dontexpand;	/* not included in star expansion */
+};
+
+/* Support for parser_errposition_callback function */
+typedef struct ParseCallbackState
+{
+	ParseState *pstate;
+	int			location;
+	ErrorContextCallback errcallback;
+} ParseCallbackState;
+
+
+extern ParseState *make_parsestate(ParseState *parentParseState);
+extern void free_parsestate(ParseState *pstate);
+extern int	parser_errposition(ParseState *pstate, int location);
+
+extern void setup_parser_errposition_callback(ParseCallbackState *pcbstate,
+											  ParseState *pstate, int location);
+extern void cancel_parser_errposition_callback(ParseCallbackState *pcbstate);
+
+extern void transformContainerType(Oid *containerType, int32 *containerTypmod);
+
+extern SubscriptingRef *transformContainerSubscripts(ParseState *pstate,
+													 Node *containerBase,
+													 Oid containerType,
+													 int32 containerTypMod,
+													 List *indirection,
+													 bool isAssignment);
+extern Const *make_const(ParseState *pstate, A_Const *aconst);
+
+#endif							/* PARSE_NODE_H */
diff --git a/src/include/parser/parse_oper.h b/src/include/parser/parse_oper.h
new file mode 100644
index 0000000..e15b622
--- /dev/null
+++ b/src/include/parser/parse_oper.h
@@ -0,0 +1,65 @@
+/*-------------------------------------------------------------------------
+ *
+ * parse_oper.h
+ *		handle operator things for parser
+ *
+ *
+ * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/parser/parse_oper.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PARSE_OPER_H
+#define PARSE_OPER_H
+
+#include "access/htup.h"
+#include "nodes/parsenodes.h"
+#include "parser/parse_node.h"
+
+
+typedef HeapTuple Operator;
+
+/* Routines to look up an operator given name and exact input type(s) */
+extern Oid	LookupOperName(ParseState *pstate, List *opername,
+						   Oid oprleft, Oid oprright,
+						   bool noError, int location);
+extern Oid	LookupOperWithArgs(ObjectWithArgs *oper, bool noError);
+
+/* Routines to find operators matching a name and given input types */
+/* NB: the selected operator may require coercion of the input types! */
+extern Operator oper(ParseState *pstate, List *op, Oid arg1, Oid arg2,
+					 bool noError, int location);
+extern Operator left_oper(ParseState *pstate, List *op, Oid arg,
+						  bool noError, int location);
+
+/* Routines to find operators that DO NOT require coercion --- ie, their */
+/* input types are either exactly as given, or binary-compatible */
+extern Operator compatible_oper(ParseState *pstate, List *op,
+								Oid arg1, Oid arg2,
+								bool noError, int location);
+
+/* currently no need for compatible_left_oper/compatible_right_oper */
+
+/* Routines for identifying "<", "=", ">" operators for a type */
+extern void get_sort_group_operators(Oid argtype,
+									 bool needLT, bool needEQ, bool needGT,
+									 Oid *ltOpr, Oid *eqOpr, Oid *gtOpr,
+									 bool *isHashable);
+
+/* Convenience routines for common calls on the above */
+extern Oid	compatible_oper_opid(List *op, Oid arg1, Oid arg2, bool noError);
+
+/* Extract operator OID or underlying-function OID from an Operator tuple */
+extern Oid	oprid(Operator op);
+extern Oid	oprfuncid(Operator op);
+
+/* Build expression tree for an operator invocation */
+extern Expr *make_op(ParseState *pstate, List *opname,
+					 Node *ltree, Node *rtree, Node *last_srf, int location);
+extern Expr *make_scalar_array_op(ParseState *pstate, List *opname,
+								  bool useOr,
+								  Node *ltree, Node *rtree, int location);
+
+#endif							/* PARSE_OPER_H */
diff --git a/src/include/parser/parse_param.h b/src/include/parser/parse_param.h
new file mode 100644
index 0000000..df1ee66
--- /dev/null
+++ b/src/include/parser/parse_param.h
@@ -0,0 +1,25 @@
+/*-------------------------------------------------------------------------
+ *
+ * parse_param.h
+ *	  handle parameters in parser
+ *
+ * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/parser/parse_param.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PARSE_PARAM_H
+#define PARSE_PARAM_H
+
+#include "parser/parse_node.h"
+
+extern void setup_parse_fixed_parameters(ParseState *pstate,
+										 const Oid *paramTypes, int numParams);
+extern void setup_parse_variable_parameters(ParseState *pstate,
+											Oid **paramTypes, int *numParams);
+extern void check_variable_parameters(ParseState *pstate, Query *query);
+extern bool query_contains_extern_params(Query *query);
+
+#endif							/* PARSE_PARAM_H */
diff --git a/src/include/parser/parse_relation.h b/src/include/parser/parse_relation.h
new file mode 100644
index 0000000..de21c3c
--- /dev/null
+++ b/src/include/parser/parse_relation.h
@@ -0,0 +1,124 @@
+/*-------------------------------------------------------------------------
+ *
+ * parse_relation.h
+ *	  prototypes for parse_relation.c.
+ *
+ *
+ * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/parser/parse_relation.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PARSE_RELATION_H
+#define PARSE_RELATION_H
+
+#include "parser/parse_node.h"
+
+
+extern ParseNamespaceItem *refnameNamespaceItem(ParseState *pstate,
+												const char *schemaname,
+												const char *refname,
+												int location,
+												int *sublevels_up);
+extern CommonTableExpr *scanNameSpaceForCTE(ParseState *pstate,
+											const char *refname,
+											Index *ctelevelsup);
+extern bool scanNameSpaceForENR(ParseState *pstate, const char *refname);
+extern void checkNameSpaceConflicts(ParseState *pstate, List *namespace1,
+									List *namespace2);
+extern ParseNamespaceItem *GetNSItemByRangeTablePosn(ParseState *pstate,
+													 int varno,
+													 int sublevels_up);
+extern RangeTblEntry *GetRTEByRangeTablePosn(ParseState *pstate,
+											 int varno,
+											 int sublevels_up);
+extern CommonTableExpr *GetCTEForRTE(ParseState *pstate, RangeTblEntry *rte,
+									 int rtelevelsup);
+extern Node *scanNSItemForColumn(ParseState *pstate, ParseNamespaceItem *nsitem,
+								 int sublevels_up, const char *colname,
+								 int location);
+extern Node *colNameToVar(ParseState *pstate, const char *colname, bool localonly,
+						  int location);
+extern void markVarForSelectPriv(ParseState *pstate, Var *var);
+extern Relation parserOpenTable(ParseState *pstate, const RangeVar *relation,
+								int lockmode);
+extern ParseNamespaceItem *addRangeTableEntry(ParseState *pstate,
+											  RangeVar *relation,
+											  Alias *alias,
+											  bool inh,
+											  bool inFromCl);
+extern ParseNamespaceItem *addRangeTableEntryForRelation(ParseState *pstate,
+														 Relation rel,
+														 int lockmode,
+														 Alias *alias,
+														 bool inh,
+														 bool inFromCl);
+extern ParseNamespaceItem *addRangeTableEntryForSubquery(ParseState *pstate,
+														 Query *subquery,
+														 Alias *alias,
+														 bool lateral,
+														 bool inFromCl);
+extern ParseNamespaceItem *addRangeTableEntryForFunction(ParseState *pstate,
+														 List *funcnames,
+														 List *funcexprs,
+														 List *coldeflists,
+														 RangeFunction *rangefunc,
+														 bool lateral,
+														 bool inFromCl);
+extern ParseNamespaceItem *addRangeTableEntryForValues(ParseState *pstate,
+													   List *exprs,
+													   List *coltypes,
+													   List *coltypmods,
+													   List *colcollations,
+													   Alias *alias,
+													   bool lateral,
+													   bool inFromCl);
+extern ParseNamespaceItem *addRangeTableEntryForTableFunc(ParseState *pstate,
+														  TableFunc *tf,
+														  Alias *alias,
+														  bool lateral,
+														  bool inFromCl);
+extern ParseNamespaceItem *addRangeTableEntryForJoin(ParseState *pstate,
+													 List *colnames,
+													 ParseNamespaceColumn *nscolumns,
+													 JoinType jointype,
+													 int nummergedcols,
+													 List *aliasvars,
+													 List *leftcols,
+													 List *rightcols,
+													 Alias *joinalias,
+													 Alias *alias,
+													 bool inFromCl);
+extern ParseNamespaceItem *addRangeTableEntryForCTE(ParseState *pstate,
+													CommonTableExpr *cte,
+													Index levelsup,
+													RangeVar *rv,
+													bool inFromCl);
+extern ParseNamespaceItem *addRangeTableEntryForENR(ParseState *pstate,
+													RangeVar *rv,
+													bool inFromCl);
+extern bool isLockedRefname(ParseState *pstate, const char *refname);
+extern void addNSItemToQuery(ParseState *pstate, ParseNamespaceItem *nsitem,
+							 bool addToJoinList,
+							 bool addToRelNameSpace, bool addToVarNameSpace);
+extern void errorMissingRTE(ParseState *pstate, RangeVar *relation) pg_attribute_noreturn();
+extern void errorMissingColumn(ParseState *pstate,
+							   const char *relname, const char *colname, int location) pg_attribute_noreturn();
+extern void expandRTE(RangeTblEntry *rte, int rtindex, int sublevels_up,
+					  int location, bool include_dropped,
+					  List **colnames, List **colvars);
+extern List *expandNSItemVars(ParseNamespaceItem *nsitem,
+							  int sublevels_up, int location,
+							  List **colnames);
+extern List *expandNSItemAttrs(ParseState *pstate, ParseNamespaceItem *nsitem,
+							   int sublevels_up, bool require_col_privs,
+							   int location);
+extern int	attnameAttNum(Relation rd, const char *attname, bool sysColOK);
+extern const NameData *attnumAttName(Relation rd, int attid);
+extern Oid	attnumTypeId(Relation rd, int attid);
+extern Oid	attnumCollationId(Relation rd, int attid);
+extern bool isQueryUsingTempRelation(Query *query);
+
+#endif							/* PARSE_RELATION_H */
diff --git a/src/include/parser/parse_target.h b/src/include/parser/parse_target.h
new file mode 100644
index 0000000..342e0d0
--- /dev/null
+++ b/src/include/parser/parse_target.h
@@ -0,0 +1,58 @@
+/*-------------------------------------------------------------------------
+ *
+ * parse_target.h
+ *	  handle target lists
+ *
+ *
+ * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/parser/parse_target.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PARSE_TARGET_H
+#define PARSE_TARGET_H
+
+#include "parser/parse_node.h"
+
+
+extern List *transformTargetList(ParseState *pstate, List *targetlist,
+								 ParseExprKind exprKind);
+extern List *transformExpressionList(ParseState *pstate, List *exprlist,
+									 ParseExprKind exprKind, bool allowDefault);
+extern void resolveTargetListUnknowns(ParseState *pstate, List *targetlist);
+extern void markTargetListOrigins(ParseState *pstate, List *targetlist);
+extern TargetEntry *transformTargetEntry(ParseState *pstate,
+										 Node *node, Node *expr, ParseExprKind exprKind,
+										 char *colname, bool resjunk);
+extern Expr *transformAssignedExpr(ParseState *pstate, Expr *expr,
+								   ParseExprKind exprKind,
+								   const char *colname,
+								   int attrno,
+								   List *indirection,
+								   int location);
+extern void updateTargetListEntry(ParseState *pstate, TargetEntry *tle,
+								  char *colname, int attrno,
+								  List *indirection,
+								  int location);
+extern Node *transformAssignmentIndirection(ParseState *pstate,
+											Node *basenode,
+											const char *targetName,
+											bool targetIsSubscripting,
+											Oid targetTypeId,
+											int32 targetTypMod,
+											Oid targetCollation,
+											List *indirection,
+											ListCell *indirection_cell,
+											Node *rhs,
+											CoercionContext ccontext,
+											int location);
+extern List *checkInsertTargets(ParseState *pstate, List *cols,
+								List **attrnos);
+extern TupleDesc expandRecordVariable(ParseState *pstate, Var *var,
+									  int levelsup);
+extern char *FigureColname(Node *node);
+extern char *FigureIndexColname(Node *node);
+
+#endif							/* PARSE_TARGET_H */
diff --git a/src/include/parser/parse_type.h b/src/include/parser/parse_type.h
new file mode 100644
index 0000000..4e5624d
--- /dev/null
+++ b/src/include/parser/parse_type.h
@@ -0,0 +1,60 @@
+/*-------------------------------------------------------------------------
+ *
+ * parse_type.h
+ *		handle type operations for parser
+ *
+ * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/parser/parse_type.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PARSE_TYPE_H
+#define PARSE_TYPE_H
+
+#include "access/htup.h"
+#include "parser/parse_node.h"
+
+
+typedef HeapTuple Type;
+
+extern Type LookupTypeName(ParseState *pstate, const TypeName *typeName,
+						   int32 *typmod_p, bool missing_ok);
+extern Type LookupTypeNameExtended(ParseState *pstate,
+								   const TypeName *typeName, int32 *typmod_p,
+								   bool temp_ok, bool missing_ok);
+extern Oid	LookupTypeNameOid(ParseState *pstate, const TypeName *typeName,
+							  bool missing_ok);
+extern Type typenameType(ParseState *pstate, const TypeName *typeName,
+						 int32 *typmod_p);
+extern Oid	typenameTypeId(ParseState *pstate, const TypeName *typeName);
+extern void typenameTypeIdAndMod(ParseState *pstate, const TypeName *typeName,
+								 Oid *typeid_p, int32 *typmod_p);
+
+extern char *TypeNameToString(const TypeName *typeName);
+extern char *TypeNameListToString(List *typenames);
+
+extern Oid	LookupCollation(ParseState *pstate, List *collnames, int location);
+extern Oid	GetColumnDefCollation(ParseState *pstate, ColumnDef *coldef, Oid typeOid);
+
+extern Type typeidType(Oid id);
+
+extern Oid	typeTypeId(Type tp);
+extern int16 typeLen(Type t);
+extern bool typeByVal(Type t);
+extern char *typeTypeName(Type t);
+extern Oid	typeTypeRelid(Type typ);
+extern Oid	typeTypeCollation(Type typ);
+extern Datum stringTypeDatum(Type tp, char *string, int32 atttypmod);
+
+extern Oid	typeidTypeRelid(Oid type_id);
+extern Oid	typeOrDomainTypeRelid(Oid type_id);
+
+extern TypeName *typeStringToTypeName(const char *str);
+extern void parseTypeString(const char *str, Oid *typeid_p, int32 *typmod_p, bool missing_ok);
+
+/* true if typeid is composite, or domain over composite, but not RECORD */
+#define ISCOMPLEX(typeid) (typeOrDomainTypeRelid(typeid) != InvalidOid)
+
+#endif							/* PARSE_TYPE_H */
diff --git a/src/include/parser/parse_utilcmd.h b/src/include/parser/parse_utilcmd.h
new file mode 100644
index 0000000..11160ad
--- /dev/null
+++ b/src/include/parser/parse_utilcmd.h
@@ -0,0 +1,44 @@
+/*-------------------------------------------------------------------------
+ *
+ * parse_utilcmd.h
+ *		parse analysis for utility commands
+ *
+ *
+ * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/parser/parse_utilcmd.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PARSE_UTILCMD_H
+#define PARSE_UTILCMD_H
+
+#include "parser/parse_node.h"
+
+struct AttrMap;					/* avoid including attmap.h here */
+
+
+extern List *transformCreateStmt(CreateStmt *stmt, const char *queryString);
+extern AlterTableStmt *transformAlterTableStmt(Oid relid, AlterTableStmt *stmt,
+											   const char *queryString,
+											   List **beforeStmts,
+											   List **afterStmts);
+extern IndexStmt *transformIndexStmt(Oid relid, IndexStmt *stmt,
+									 const char *queryString);
+extern CreateStatsStmt *transformStatsStmt(Oid relid, CreateStatsStmt *stmt,
+										   const char *queryString);
+extern void transformRuleStmt(RuleStmt *stmt, const char *queryString,
+							  List **actions, Node **whereClause);
+extern List *transformCreateSchemaStmtElements(List *schemaElts,
+											   const char *schemaName);
+extern PartitionBoundSpec *transformPartitionBound(ParseState *pstate, Relation parent,
+												   PartitionBoundSpec *spec);
+extern List *expandTableLikeClause(RangeVar *heapRel,
+								   TableLikeClause *table_like_clause);
+extern IndexStmt *generateClonedIndexStmt(RangeVar *heapRel,
+										  Relation source_idx,
+										  const struct AttrMap *attmap,
+										  Oid *constraintOid);
+
+#endif							/* PARSE_UTILCMD_H */
diff --git a/src/include/parser/parser.h b/src/include/parser/parser.h
new file mode 100644
index 0000000..828150f
--- /dev/null
+++ b/src/include/parser/parser.h
@@ -0,0 +1,68 @@
+/*-------------------------------------------------------------------------
+ *
+ * parser.h
+ *		Definitions for the "raw" parser (flex and bison phases only)
+ *
+ * This is the external API for the raw lexing/parsing functions.
+ *
+ * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/parser/parser.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PARSER_H
+#define PARSER_H
+
+#include "nodes/parsenodes.h"
+
+
+/*
+ * RawParseMode determines the form of the string that raw_parser() accepts:
+ *
+ * RAW_PARSE_DEFAULT: parse a semicolon-separated list of SQL commands,
+ * and return a List of RawStmt nodes.
+ *
+ * RAW_PARSE_TYPE_NAME: parse a type name, and return a one-element List
+ * containing a TypeName node.
+ *
+ * RAW_PARSE_PLPGSQL_EXPR: parse a PL/pgSQL expression, and return
+ * a one-element List containing a RawStmt node.
+ *
+ * RAW_PARSE_PLPGSQL_ASSIGNn: parse a PL/pgSQL assignment statement,
+ * and return a one-element List containing a RawStmt node.  "n"
+ * gives the number of dotted names comprising the target ColumnRef.
+ */
+typedef enum
+{
+	RAW_PARSE_DEFAULT = 0,
+	RAW_PARSE_TYPE_NAME,
+	RAW_PARSE_PLPGSQL_EXPR,
+	RAW_PARSE_PLPGSQL_ASSIGN1,
+	RAW_PARSE_PLPGSQL_ASSIGN2,
+	RAW_PARSE_PLPGSQL_ASSIGN3
+} RawParseMode;
+
+/* Values for the backslash_quote GUC */
+typedef enum
+{
+	BACKSLASH_QUOTE_OFF,
+	BACKSLASH_QUOTE_ON,
+	BACKSLASH_QUOTE_SAFE_ENCODING
+}			BackslashQuoteType;
+
+/* GUC variables in scan.l (every one of these is a bad idea :-() */
+extern PGDLLIMPORT int backslash_quote;
+extern PGDLLIMPORT bool escape_string_warning;
+extern PGDLLIMPORT bool standard_conforming_strings;
+
+
+/* Primary entry point for the raw parsing functions */
+extern List *raw_parser(const char *str, RawParseMode mode);
+
+/* Utility functions exported by gram.y (perhaps these should be elsewhere) */
+extern List *SystemFuncName(char *name);
+extern TypeName *SystemTypeName(char *name);
+
+#endif							/* PARSER_H */
diff --git a/src/include/parser/parsetree.h b/src/include/parser/parsetree.h
new file mode 100644
index 0000000..3a1afff
--- /dev/null
+++ b/src/include/parser/parsetree.h
@@ -0,0 +1,61 @@
+/*-------------------------------------------------------------------------
+ *
+ * parsetree.h
+ *	  Routines to access various components and subcomponents of
+ *	  parse trees.
+ *
+ *
+ * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/parser/parsetree.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef PARSETREE_H
+#define PARSETREE_H
+
+#include "nodes/parsenodes.h"
+
+
+/* ----------------
+ *		range table operations
+ * ----------------
+ */
+
+/*
+ *		rt_fetch
+ *
+ * NB: this will crash and burn if handed an out-of-range RT index
+ */
+#define rt_fetch(rangetable_index, rangetable) \
+	((RangeTblEntry *) list_nth(rangetable, (rangetable_index)-1))
+
+/*
+ * Given an RTE and an attribute number, return the appropriate
+ * variable name or alias for that attribute of that RTE.
+ */
+extern char *get_rte_attribute_name(RangeTblEntry *rte, AttrNumber attnum);
+
+/*
+ * Check whether an attribute of an RTE has been dropped
+ */
+extern bool get_rte_attribute_is_dropped(RangeTblEntry *rte,
+										 AttrNumber attnum);
+
+
+/* ----------------
+ *		target list operations
+ * ----------------
+ */
+
+extern TargetEntry *get_tle_by_resno(List *tlist, AttrNumber resno);
+
+/* ----------------
+ *		FOR UPDATE/SHARE info
+ * ----------------
+ */
+
+extern RowMarkClause *get_parse_rowmark(Query *qry, Index rtindex);
+
+#endif							/* PARSETREE_H */
diff --git a/src/include/parser/scanner.h b/src/include/parser/scanner.h
new file mode 100644
index 0000000..0843481
--- /dev/null
+++ b/src/include/parser/scanner.h
@@ -0,0 +1,150 @@
+/*-------------------------------------------------------------------------
+ *
+ * scanner.h
+ *		API for the core scanner (flex machine)
+ *
+ * The core scanner is also used by PL/pgSQL, so we provide a public API
+ * for it.  However, the rest of the backend is only expected to use the
+ * higher-level API provided by parser.h.
+ *
+ *
+ * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/parser/scanner.h
+ *
+ *-------------------------------------------------------------------------
+ */
+
+#ifndef SCANNER_H
+#define SCANNER_H
+
+#include "common/keywords.h"
+
+/*
+ * The scanner returns extra data about scanned tokens in this union type.
+ * Note that this is a subset of the fields used in YYSTYPE of the bison
+ * parsers built atop the scanner.
+ */
+typedef union core_YYSTYPE
+{
+	int			ival;			/* for integer literals */
+	char	   *str;			/* for identifiers and non-integer literals */
+	const char *keyword;		/* canonical spelling of keywords */
+} core_YYSTYPE;
+
+/*
+ * We track token locations in terms of byte offsets from the start of the
+ * source string, not the column number/line number representation that
+ * bison uses by default.  Also, to minimize overhead we track only one
+ * location (usually the first token location) for each construct, not
+ * the beginning and ending locations as bison does by default.  It's
+ * therefore sufficient to make YYLTYPE an int.
+ */
+#define YYLTYPE  int
+
+/*
+ * Another important component of the scanner's API is the token code numbers.
+ * However, those are not defined in this file, because bison insists on
+ * defining them for itself.  The token codes used by the core scanner are
+ * the ASCII characters plus these:
+ *	%token <str>	IDENT UIDENT FCONST SCONST USCONST BCONST XCONST Op
+ *	%token <ival>	ICONST PARAM
+ *	%token			TYPECAST DOT_DOT COLON_EQUALS EQUALS_GREATER
+ *	%token			LESS_EQUALS GREATER_EQUALS NOT_EQUALS
+ * The above token definitions *must* be the first ones declared in any
+ * bison parser built atop this scanner, so that they will have consistent
+ * numbers assigned to them (specifically, IDENT = 258 and so on).
+ */
+
+/*
+ * The YY_EXTRA data that a flex scanner allows us to pass around.
+ * Private state needed by the core scanner goes here.  Note that the actual
+ * yy_extra struct may be larger and have this as its first component, thus
+ * allowing the calling parser to keep some fields of its own in YY_EXTRA.
+ */
+typedef struct core_yy_extra_type
+{
+	/*
+	 * The string the scanner is physically scanning.  We keep this mainly so
+	 * that we can cheaply compute the offset of the current token (yytext).
+	 */
+	char	   *scanbuf;
+	Size		scanbuflen;
+
+	/*
+	 * The keyword list to use, and the associated grammar token codes.
+	 */
+	const ScanKeywordList *keywordlist;
+	const uint16 *keyword_tokens;
+
+	/*
+	 * Scanner settings to use.  These are initialized from the corresponding
+	 * GUC variables by scanner_init().  Callers can modify them after
+	 * scanner_init() if they don't want the scanner's behavior to follow the
+	 * prevailing GUC settings.
+	 */
+	int			backslash_quote;
+	bool		escape_string_warning;
+	bool		standard_conforming_strings;
+
+	/*
+	 * literalbuf is used to accumulate literal values when multiple rules are
+	 * needed to parse a single literal.  Call startlit() to reset buffer to
+	 * empty, addlit() to add text.  NOTE: the string in literalbuf is NOT
+	 * necessarily null-terminated, but there always IS room to add a trailing
+	 * null at offset literallen.  We store a null only when we need it.
+	 */
+	char	   *literalbuf;		/* palloc'd expandable buffer */
+	int			literallen;		/* actual current string length */
+	int			literalalloc;	/* current allocated buffer size */
+
+	/*
+	 * Random assorted scanner state.
+	 */
+	int			state_before_str_stop;	/* start cond. before end quote */
+	int			xcdepth;		/* depth of nesting in slash-star comments */
+	char	   *dolqstart;		/* current $foo$ quote start string */
+	YYLTYPE		save_yylloc;	/* one-element stack for PUSH_YYLLOC() */
+
+	/* first part of UTF16 surrogate pair for Unicode escapes */
+	int32		utf16_first_part;
+
+	/* state variables for literal-lexing warnings */
+	bool		warn_on_first_escape;
+	bool		saw_non_ascii;
+} core_yy_extra_type;
+
+/*
+ * The type of yyscanner is opaque outside scan.l.
+ */
+typedef void *core_yyscan_t;
+
+/* Support for scanner_errposition_callback function */
+typedef struct ScannerCallbackState
+{
+	core_yyscan_t yyscanner;
+	int			location;
+	ErrorContextCallback errcallback;
+} ScannerCallbackState;
+
+
+/* Constant data exported from parser/scan.l */
+extern PGDLLIMPORT const uint16 ScanKeywordTokens[];
+
+/* Entry points in parser/scan.l */
+extern core_yyscan_t scanner_init(const char *str,
+								  core_yy_extra_type *yyext,
+								  const ScanKeywordList *keywordlist,
+								  const uint16 *keyword_tokens);
+extern void scanner_finish(core_yyscan_t yyscanner);
+extern int	core_yylex(core_YYSTYPE *lvalp, YYLTYPE *llocp,
+					   core_yyscan_t yyscanner);
+extern int	scanner_errposition(int location, core_yyscan_t yyscanner);
+extern void setup_scanner_errposition_callback(ScannerCallbackState *scbstate,
+											   core_yyscan_t yyscanner,
+											   int location);
+extern void cancel_scanner_errposition_callback(ScannerCallbackState *scbstate);
+extern void scanner_yyerror(const char *message, core_yyscan_t yyscanner) pg_attribute_noreturn();
+
+#endif							/* SCANNER_H */
diff --git a/src/include/parser/scansup.h b/src/include/parser/scansup.h
new file mode 100644
index 0000000..ff65224
--- /dev/null
+++ b/src/include/parser/scansup.h
@@ -0,0 +1,27 @@
+/*-------------------------------------------------------------------------
+ *
+ * scansup.h
+ *	  scanner support routines used by the core lexer
+ *
+ * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/parser/scansup.h
+ *
+ *-------------------------------------------------------------------------
+ */
+
+#ifndef SCANSUP_H
+#define SCANSUP_H
+
+extern char *downcase_truncate_identifier(const char *ident, int len,
+										  bool warn);
+
+extern char *downcase_identifier(const char *ident, int len,
+								 bool warn, bool truncate);
+
+extern void truncate_identifier(char *ident, int len, bool warn);
+
+extern bool scanner_isspace(char ch);
+
+#endif							/* SCANSUP_H */