## Summary **No review yet** ## Minimized query ```sql PRAGMA auto_vacuum = 2; .timer on PRAGMA defer_foreign_keys = FALSE; BEGIN DEFERRED TRANSACTION; -- glob('[!0-9]', 'a') ATTACH DATABASE (':memory:' || '') AS aux25; -- sqlite_compileoption_used({v}) -- NOCASE CREATE VIRTUAL TABLE t0 USING /**/ fts4("x", "y", "z"); DROP TABLE t0; DETACH DATABASE aux25; END TRANSACTION; PRAGMA defer_foreign_keys = FALSE; BEGIN DEFERRED TRANSACTION; -- glob('[!0-9]', 'a') ATTACH DATABASE (':memory:' || '') AS aux25; -- sqlite_compileoption_used({v}) -- NOCASE CREATE VIRTUAL TABLE t0 USING /**/ fts4("x", "y", "z"); DROP TABLE t0; DETACH DATABASE aux25; END TRANSACTION; PRAGMA defer_foreign_keys = FALSE; BEGIN DEFERRED TRANSACTION; -- glob('[!0-9]', 'a') ATTACH DATABASE (':memory:' || '') AS aux25; -- sqlite_compileoption_used({v}) -- NOCASE CREATE VIRTUAL TABLE t0 USING /**/ fts4("x", "y", "z"); DROP TABLE t0; DETACH DATABASE aux25; END TRANSACTION; CREATE TABLE T1 ( a INTEGER, b TEXT ); CREATE TABLE T2 ( a INTEGER, b TEXT ); INSERT INTO T1 VALUES (-(-(1)),'a'),(2,'b'); INSERT INTO T2 VALUES (1,'c'),(1,'d'); SELECT T1.b, ( SELECT GROUP_CONCAT(b,',') FROM T2 WHERE T2.a=T1.a ) AS c FROM T1; SELECT * FROM T1 WHERE (a, a) IN (SELECT a, a FROM T1); ALTER TABLE T2 DROP COLUMN b; ``` ## Actual output ```sql Run Time: real 0.000 user 0.000017 sys 0.000000 Run Time: real 0.000 user 0.000003 sys 0.000000 Run Time: real 0.000 user 0.000052 sys 0.000000 Run Time: real 0.000 user 0.000516 sys 0.000000 Run Time: real 0.001 user 0.000340 sys 0.000000 Run Time: real 0.000 user 0.000008 sys 0.000000 Run Time: real 0.000 user 0.000007 sys 0.000000 Run Time: real 0.000 user 0.000004 sys 0.000000 Run Time: real 0.000 user 0.000002 sys 0.000000 Run Time: real 0.000 user 0.000040 sys 0.000000 Run Time: real 0.000 user 0.000393 sys 0.000000 Run Time: real 0.000 user 0.000243 sys 0.000000 Run Time: real 0.000 user 0.000006 sys 0.000000 Run Time: real 0.000 user 0.000005 sys 0.000000 Run Time: real 0.000 user 0.000003 sys 0.000000 Run Time: real 0.000 user 0.000002 sys 0.000000 Run Time: real 0.001 user 0.000032 sys 0.000000 Run Time: real 0.000 user 0.000369 sys 0.000000 Run Time: real 0.000 user 0.000257 sys 0.000000 Run Time: real 0.000 user 0.000006 sys 0.000000 Run Time: real 0.000 user 0.000021 sys 0.000000 Run Time: real 0.000 user 0.000140 sys 0.000000 Run Time: real 0.000 user 0.000065 sys 0.000000 Run Time: real 0.000 user 0.000030 sys 0.000000 Run Time: real 0.000 user 0.000012 sys 0.000000 a|c,d b| Run Time: real 0.000 user 0.000062 sys 0.000000 1|a 2|b Run Time: real 0.000 user 0.000055 sys 0.000000 Run Time: real 0.001 user 0.000580 sys 0.000000 ``` ## Expectation ```sql Run Time: real 0.000003 user 0.000017 sys 0.000000 Run Time: real 0.000002 user 0.000002 sys 0.000000 Run Time: real 0.000036 user 0.000036 sys 0.000000 Run Time: real 0.000316 user 0.000317 sys 0.000000 Run Time: real 0.000221 user 0.000222 sys 0.000000 Run Time: real 0.000006 user 0.000006 sys 0.000000 Run Time: real 0.000004 user 0.000004 sys 0.000000 Run Time: real 0.000002 user 0.000003 sys 0.000000 Run Time: real 0.000002 user 0.000002 sys 0.000000 Run Time: real 0.000023 user 0.000024 sys 0.000000 Run Time: real 0.000195 user 0.000196 sys 0.000000 Run Time: real 0.000135 user 0.000135 sys 0.000000 Run Time: real 0.000003 user 0.000004 sys 0.000000 Run Time: real 0.000002 user 0.000003 sys 0.000000 Run Time: real 0.000002 user 0.000002 sys 0.000000 Run Time: real 0.000001 user 0.000001 sys 0.000000 Run Time: real 0.000014 user 0.000015 sys 0.000000 Run Time: real 0.000166 user 0.000167 sys 0.000000 Run Time: real 0.000111 user 0.000112 sys 0.000000 Run Time: real 0.000002 user 0.000002 sys 0.000000 Run Time: real 0.000002 user 0.000002 sys 0.000000 Run Time: real 0.000026 user 0.000027 sys 0.000000 Run Time: real 0.000022 user 0.000022 sys 0.000000 Run Time: real 0.000015 user 0.000016 sys 0.000000 Run Time: real 0.000007 user 0.000007 sys 0.000000 a|c,d b| Run Time: real 0.000034 user 0.000035 sys 0.000000 1|a 2|b Run Time: real 0.000035 user 0.000035 sys 0.000000 Run Time: real 0.000292 user 0.000293 sys 0.000000 ``` ## Flag ``` ```