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+# 2013-11-04
+#
+# The author disclaims copyright to this source code. In place of
+# a legal notice, here is a blessing:
+#
+# May you do good and not evil.
+# May you find forgiveness for yourself and forgive others.
+# May you share freely, never taking more than you give.
+#
+#***********************************************************************
+#
+# Test cases for partial indices in WITHOUT ROWID tables
+#
+
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+
+ifcapable !vtab {
+ finish_test
+ return
+}
+
+# Capture the output of a pragma in a TEMP table.
+#
+proc capture_pragma {db tabname sql} {
+ $db eval "DROP TABLE IF EXISTS temp.$tabname"
+ set once 1
+ $db eval $sql x {
+ if {$once} {
+ set once 0
+ set ins "INSERT INTO $tabname VALUES"
+ set crtab "CREATE TEMP TABLE $tabname "
+ set sep "("
+ foreach col $x(*) {
+ append ins ${sep}\$x($col)
+ append crtab ${sep}\"$col\"
+ set sep ,
+ }
+ append ins )
+ append crtab )
+ $db eval $crtab
+ }
+ $db eval $ins
+ }
+}
+
+
+load_static_extension db wholenumber;
+do_test index7-1.1 {
+ # Able to parse and manage partial indices
+ execsql {
+ CREATE TABLE t1(a,b,c PRIMARY KEY) WITHOUT rowid;
+ CREATE INDEX t1a ON t1(a) WHERE a IS NOT NULL;
+ CREATE INDEX t1b ON t1(b) WHERE b>10;
+ CREATE VIRTUAL TABLE nums USING wholenumber;
+ INSERT INTO t1(a,b,c)
+ SELECT CASE WHEN value%3!=0 THEN value END, value, value
+ FROM nums WHERE value<=20;
+ SELECT count(a), count(b) FROM t1;
+ PRAGMA integrity_check;
+ }
+} {14 20 ok}
+
+# (The "partial" column of the PRAGMA index_list output is...)
+# EVIDENCE-OF: R-34457-09668 "1" if the index is a partial index and "0"
+# if not.
+#
+do_test index7-1.1a {
+ capture_pragma db out {PRAGMA index_list(t1)}
+ db eval {SELECT "name", "partial", '|' FROM out ORDER BY "name"}
+} {sqlite_autoindex_t1_1 0 | t1a 1 | t1b 1 |}
+
+# Make sure the count(*) optimization works correctly with
+# partial indices. Ticket [a5c8ed66cae16243be6] 2013-10-03.
+#
+do_execsql_test index7-1.1.1 {
+ SELECT count(*) FROM t1;
+} {20}
+
+# Error conditions during parsing...
+#
+do_test index7-1.2 {
+ catchsql {
+ CREATE INDEX bad1 ON t1(a,b) WHERE x IS NOT NULL;
+ }
+} {1 {no such column: x}}
+do_test index7-1.3 {
+ catchsql {
+ CREATE INDEX bad1 ON t1(a,b) WHERE EXISTS(SELECT * FROM t1);
+ }
+} {1 {subqueries prohibited in partial index WHERE clauses}}
+do_test index7-1.4 {
+ catchsql {
+ CREATE INDEX bad1 ON t1(a,b) WHERE a!=?1;
+ }
+} {1 {parameters prohibited in partial index WHERE clauses}}
+do_test index7-1.5 {
+ catchsql {
+ CREATE INDEX bad1 ON t1(a,b) WHERE a!=random();
+ }
+} {1 {non-deterministic functions prohibited in partial index WHERE clauses}}
+do_test index7-1.6 {
+ catchsql {
+ CREATE INDEX bad1 ON t1(a,b) WHERE a NOT LIKE 'abc%';
+ }
+} {0 {}}
+do_execsql_test index7-1.7 {
+ INSERT INTO t1(a,b,c)
+ VALUES('abcde',1,101),('abdef',2,102),('xyz',3,103),('abcz',4,104);
+ SELECT c FROM t1 WHERE a NOT LIKE 'abc%' AND a=7 ORDER BY +b;
+} {7}
+do_execsql_test index7-1.7eqp {
+ EXPLAIN QUERY PLAN
+ SELECT b FROM t1 WHERE a NOT LIKE 'abc%' AND a=7 ORDER BY +b;
+} {/SEARCH t1 USING COVERING INDEX bad1 /}
+do_execsql_test index7-1.8 {
+ DELETE FROM t1 WHERE c>=101;
+ DROP INDEX IF EXISTS bad1;
+} {}
+
+do_test index7-1.10 {
+ execsql {
+ ANALYZE;
+ SELECT idx, stat FROM sqlite_stat1 ORDER BY idx;
+ PRAGMA integrity_check;
+ }
+} {t1 {20 1} t1a {14 1} t1b {10 1} ok}
+
+# STAT1 shows the partial indices have a reduced number of
+# rows.
+#
+do_test index7-1.11 {
+ execsql {
+ UPDATE t1 SET a=b;
+ ANALYZE;
+ SELECT idx, stat FROM sqlite_stat1 ORDER BY idx;
+ PRAGMA integrity_check;
+ }
+} {t1 {20 1} t1a {20 1} t1b {10 1} ok}
+
+do_test index7-1.11b {
+ execsql {
+ UPDATE t1 SET a=NULL WHERE b%3!=0;
+ UPDATE t1 SET b=b+100;
+ ANALYZE;
+ SELECT idx, stat FROM sqlite_stat1 ORDER BY idx;
+ PRAGMA integrity_check;
+ }
+} {t1 {20 1} t1a {6 1} t1b {20 1} ok}
+
+do_test index7-1.12 {
+ execsql {
+ UPDATE t1 SET a=CASE WHEN b%3!=0 THEN b END;
+ UPDATE t1 SET b=b-100;
+ ANALYZE;
+ SELECT idx, stat FROM sqlite_stat1 ORDER BY idx;
+ PRAGMA integrity_check;
+ }
+} {t1 {20 1} t1a {13 1} t1b {10 1} ok}
+
+do_test index7-1.13 {
+ execsql {
+ DELETE FROM t1 WHERE b BETWEEN 8 AND 12;
+ ANALYZE;
+ SELECT idx, stat FROM sqlite_stat1 ORDER BY idx;
+ PRAGMA integrity_check;
+ }
+} {t1 {15 1} t1a {10 1} t1b {8 1} ok}
+
+do_test index7-1.14 {
+ execsql {
+ REINDEX;
+ ANALYZE;
+ SELECT idx, stat FROM sqlite_stat1 ORDER BY idx;
+ PRAGMA integrity_check;
+ }
+} {t1 {15 1} t1a {10 1} t1b {8 1} ok}
+
+do_test index7-1.15 {
+ execsql {
+ CREATE INDEX t1c ON t1(c);
+ ANALYZE;
+ SELECT idx, stat FROM sqlite_stat1 ORDER BY idx;
+ PRAGMA integrity_check;
+ }
+} {t1 {15 1} t1a {10 1} t1b {8 1} t1c {15 1} ok}
+
+# Queries use partial indices at appropriate times.
+#
+do_test index7-2.1 {
+ execsql {
+ CREATE TABLE t2(a,b PRIMARY KEY) without rowid;
+ INSERT INTO t2(a,b) SELECT value, value FROM nums WHERE value<1000;
+ UPDATE t2 SET a=NULL WHERE b%5==0;
+ CREATE INDEX t2a1 ON t2(a) WHERE a IS NOT NULL;
+ SELECT count(*) FROM t2 WHERE a IS NOT NULL;
+ }
+} {800}
+do_test index7-2.2 {
+ execsql {
+ EXPLAIN QUERY PLAN
+ SELECT * FROM t2 WHERE a=5;
+ }
+} {/(SCAN|SEARCH) t2 USING COVERING INDEX t2a1 /}
+ifcapable stat4 {
+ do_test index7-2.3stat4 {
+ execsql {
+ EXPLAIN QUERY PLAN
+ SELECT * FROM t2 WHERE a IS NOT NULL;
+ }
+ } {/(SCAN|SEARCH) t2 USING COVERING INDEX t2a1 /}
+} else {
+ do_test index7-2.3stat4 {
+ execsql {
+ EXPLAIN QUERY PLAN
+ SELECT * FROM t2 WHERE a IS NOT NULL AND a>0;
+ }
+ } {/(SCAN|SEARCH) t2 USING COVERING INDEX t2a1 /}
+}
+do_test index7-2.4 {
+ execsql {
+ EXPLAIN QUERY PLAN
+ SELECT * FROM t2 WHERE a IS NULL;
+ }
+} {~/INDEX t2a1/}
+
+do_execsql_test index7-2.101 {
+ DROP INDEX t2a1;
+ UPDATE t2 SET a=b, b=b+10000;
+ SELECT b FROM t2 WHERE a=15;
+} {10015}
+do_execsql_test index7-2.102 {
+ CREATE INDEX t2a2 ON t2(a) WHERE a<100 OR a>200;
+ SELECT b FROM t2 WHERE a=15;
+ PRAGMA integrity_check;
+} {10015 ok}
+do_execsql_test index7-2.102eqp {
+ EXPLAIN QUERY PLAN
+ SELECT b FROM t2 WHERE a=15;
+} {~/.*INDEX t2a2.*/}
+do_execsql_test index7-2.103 {
+ SELECT b FROM t2 WHERE a=15 AND a<100;
+} {10015}
+do_execsql_test index7-2.103eqp {
+ EXPLAIN QUERY PLAN
+ SELECT b FROM t2 WHERE a=15 AND a<100;
+} {/.*INDEX t2a2.*/}
+do_execsql_test index7-2.104 {
+ SELECT b FROM t2 WHERE a=515 AND a>200;
+} {10515}
+do_execsql_test index7-2.104eqp {
+ EXPLAIN QUERY PLAN
+ SELECT b FROM t2 WHERE a=515 AND a>200;
+} {/.*INDEX t2a2.*/}
+
+# Partial UNIQUE indices
+#
+do_execsql_test index7-3.1 {
+ CREATE TABLE t3(a,b PRIMARY KEY) without rowid;
+ INSERT INTO t3 SELECT value, value FROM nums WHERE value<200;
+ UPDATE t3 SET a=999 WHERE b%5!=0;
+ CREATE UNIQUE INDEX t3a ON t3(a) WHERE a<>999;
+} {}
+do_test index7-3.2 {
+ # unable to insert a duplicate row a-value that is not 999.
+ catchsql {
+ INSERT INTO t3(a,b) VALUES(150, 'test1');
+ }
+} {1 {UNIQUE constraint failed: t3.a}}
+do_test index7-3.3 {
+ # can insert multiple rows with a==999 because such rows are not
+ # part of the unique index.
+ catchsql {
+ INSERT INTO t3(a,b) VALUES(999, 'test1'), (999, 'test2');
+ }
+} {0 {}}
+do_execsql_test index7-3.4 {
+ SELECT count(*) FROM t3 WHERE a=999;
+} {162}
+integrity_check index7-3.5
+
+do_execsql_test index7-4.0 {
+ VACUUM;
+ PRAGMA integrity_check;
+} {ok}
+
+# Silently ignore database name qualifiers in partial indices.
+#
+do_execsql_test index7-5.0 {
+ CREATE INDEX t3b ON t3(b) WHERE xyzzy.t3.b BETWEEN 5 AND 10;
+ /* ^^^^^-- ignored */
+ ANALYZE;
+ SELECT count(*) FROM t3 WHERE t3.b BETWEEN 5 AND 10;
+ SELECT stat+0 FROM sqlite_stat1 WHERE idx='t3b';
+} {6 6}
+
+# Verify that the problem identified by ticket [98d973b8f5] has been fixed.
+#
+do_execsql_test index7-6.1 {
+ CREATE TABLE t5(a, b);
+ CREATE TABLE t4(c, d);
+ INSERT INTO t5 VALUES(1, 'xyz');
+ INSERT INTO t4 VALUES('abc', 'not xyz');
+ SELECT * FROM (SELECT * FROM t5 WHERE a=1 AND b='xyz'), t4 WHERE c='abc';
+} {
+ 1 xyz abc {not xyz}
+}
+do_execsql_test index7-6.2 {
+ CREATE INDEX i4 ON t4(c) WHERE d='xyz';
+ SELECT * FROM (SELECT * FROM t5 WHERE a=1 AND b='xyz'), t4 WHERE c='abc';
+} {
+ 1 xyz abc {not xyz}
+}
+do_execsql_test index7-6.3 {
+ CREATE VIEW v4 AS SELECT * FROM t4;
+ INSERT INTO t4 VALUES('def', 'xyz');
+ SELECT * FROM v4 WHERE d='xyz' AND c='def'
+} {
+ def xyz
+}
+do_eqp_test index7-6.4 {
+ SELECT * FROM v4 WHERE d='xyz' AND c='def'
+} {SEARCH t4 USING INDEX i4 (c=?)}
+
+do_catchsql_test index7-6.5 {
+ CREATE INDEX t5a ON t5(a) WHERE a=#1;
+} {1 {near "#1": syntax error}}
+
+do_execsql_test index7-7.0 {
+ CREATE TABLE t6(x, y);
+ INSERT INTO t6 VALUES(1, 1);
+ INSERT INTO t6 VALUES(0, 0);
+ SELECT * FROM t6 WHERE y IS TRUE ORDER BY x;
+} {1 1}
+
+do_execsql_test index7-7.1 {
+ CREATE INDEX i6 ON t6(x) WHERE y IS NOT TRUE;
+ SELECT * FROM t6 WHERE y IS TRUE ORDER BY x;
+} {1 1}
+
+# 2020-05-27. tag-20200527-1.
+# Incomplete stat1 information on a table with few rows should still use the
+# index.
+reset_db
+do_execsql_test index7-8.1 {
+ CREATE TABLE t1(x INTEGER PRIMARY KEY, y);
+ CREATE INDEX t1y ON t1(y) WHERE y IS NOT NULL;
+ INSERT INTO t1(x) VALUES(1),(2);
+ ANALYZE;
+ EXPLAIN QUERY PLAN SELECT 1 FROM t1 WHERE y=5;
+} {/SEARCH t1 USING COVERING INDEX t1y/}
+
+
+finish_test
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