File: bug49129.test

package info (click to toggle)
mariadb 1%3A11.8.2-1
  • links: PTS, VCS
  • area: main
  • in suites: forky, trixie
  • size: 765,428 kB
  • sloc: ansic: 2,382,827; cpp: 1,803,532; asm: 378,315; perl: 63,176; sh: 46,496; pascal: 40,776; java: 39,363; yacc: 20,428; python: 19,506; sql: 17,864; xml: 12,463; ruby: 8,544; makefile: 6,059; cs: 5,855; ada: 1,700; lex: 1,193; javascript: 1,039; objc: 80; tcl: 73; awk: 46; php: 22
file content (34 lines) | stat: -rw-r--r-- 1,011 bytes parent folder | download | duplicates (11) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
 
SET SESSION optimizer_switch = 'firstmatch=off,index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,loosescan=on,materialization=on,semijoin=on';

CREATE TABLE t0 (a INT);
INSERT INTO t0 VALUES (0),(1),(2),(3),(4);

CREATE TABLE t1 (a INT, b INT, KEY(a));
INSERT INTO t1 SELECT a, a from t0;

CREATE TABLE t2 (a INT, b INT, PRIMARY KEY(a));
INSERT INTO t2 SELECT * FROM t1;

UPDATE t1 SET a=3, b=11 WHERE a=4;
UPDATE t2 SET b=11 WHERE a=3;

--echo
--echo # This result is wrong, but will be fixed by Bug#46556
SELECT * FROM t0 WHERE t0.a IN 
  (SELECT t1.a FROM t1, t2 WHERE t2.a=t0.a AND t1.b=t2.b);

SET join_cache_level = 6;

--echo
--echo # This result is even more wrong ;-)
SELECT * FROM t0 WHERE t0.a IN 
  (SELECT t1.a FROM t1, t2 WHERE t2.a=t0.a AND t1.b=t2.b);

SET SESSION optimizer_switch = 'semijoin=off';

--echo
--echo # This result is correct
SELECT * FROM t0 WHERE t0.a IN 
  (SELECT t1.a FROM t1, t2 WHERE t2.a=t0.a AND t1.b=t2.b);

DROP TABLE t0, t1, t2;