1 files changed, 41 insertions, 0 deletions
diff --git a/src/include/executor/functions.h b/src/include/executor/functions.h
new file mode 100644
index 0000000..a0db24b
--- /dev/null
+++ b/src/include/executor/functions.h
@@ -0,0 +1,41 @@
+/*-------------------------------------------------------------------------
+ *
+ * functions.h
+ *		Declarations for execution of SQL-language functions.
+ *
+ *
+ * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/executor/functions.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef FUNCTIONS_H
+#define FUNCTIONS_H
+
+#include "nodes/execnodes.h"
+#include "tcop/dest.h"
+
+/* This struct is known only within executor/functions.c */
+typedef struct SQLFunctionParseInfo *SQLFunctionParseInfoPtr;
+
+extern Datum fmgr_sql(PG_FUNCTION_ARGS);
+
+extern SQLFunctionParseInfoPtr prepare_sql_fn_parse_info(HeapTuple procedureTuple,
+														 Node *call_expr,
+														 Oid inputCollation);
+
+extern void sql_fn_parser_setup(struct ParseState *pstate,
+								SQLFunctionParseInfoPtr pinfo);
+
+extern void check_sql_fn_statements(List *queryTreeLists);
+
+extern bool check_sql_fn_retval(List *queryTreeLists,
+								Oid rettype, TupleDesc rettupdesc,
+								bool insertDroppedCols,
+								List **resultTargetList);
+
+extern DestReceiver *CreateSQLFunctionDestReceiver(void);
+
+#endif							/* FUNCTIONS_H */