66 lines
2.9 KiB
Plaintext
66 lines
2.9 KiB
Plaintext
#
|
|
# Bug #21286261: QUERY DIGEST DOES NOT REFLECT NEW OPTIMIZER HINTS
|
|
#
|
|
CREATE TABLE t1(i INT);
|
|
CREATE TABLE t2(i INT);
|
|
# Digests should be same (empty hint comment):
|
|
SELECT * FROM t1;
|
|
SELECT /*+ */ * FROM t1;
|
|
SELECT digest, digest_text FROM performance_schema.events_statements_history ORDER BY timer_start DESC LIMIT 2;
|
|
digest digest_text
|
|
fbc315167041daed7f27d518083b193df27c39a67a3d5e2fdadc98827d5d6ab3 SELECT * FROM `t1`
|
|
fbc315167041daed7f27d518083b193df27c39a67a3d5e2fdadc98827d5d6ab3 SELECT * FROM `t1`
|
|
# Digests should be different:
|
|
SELECT * FROM t1, t2;
|
|
SELECT /*+
|
|
BKA(t1@qb1)
|
|
BNL(@qb1 t1)
|
|
DUPSWEEDOUT
|
|
FIRSTMATCH
|
|
INTOEXISTS
|
|
LOOSESCAN
|
|
MATERIALIZATION
|
|
MRR(t1)
|
|
NO_BKA(t2)
|
|
NO_BNL(t2)
|
|
NO_ICP(t2)
|
|
NO_MRR(t2)
|
|
NO_RANGE_OPTIMIZATION(t2)
|
|
NO_SEMIJOIN(t2)
|
|
QB_NAME(qb1)
|
|
SEMIJOIN(t1)
|
|
SUBQUERY(t1)
|
|
*/ * FROM t1, t2;
|
|
SELECT digest, digest_text FROM performance_schema.events_statements_history ORDER BY timer_start DESC LIMIT 2;
|
|
digest digest_text
|
|
61efd771719f5fa74bf5f66846fd11f8466fcee7e1bb8b0d98d778486ec570e3 SELECT /*+ BKA ( `t1`@`qb1` ) BNL ( @`qb1` `t1` ) DUPSWEEDOUT FIRSTMATCH INTOEXISTS LOOSESCAN MATERIALIZATION MRR ( `t1` ) NO_BKA ( `t2` ) NO_BNL ( `t2` ) NO_ICP ( `t2` ) NO_MRR ( `t2` ) NO_RANGE_OPTIMIZATION ( `t2` ) NO_SEMIJOIN ( `t2` ) QB_NAME ( `qb1` ) SEMIJOIN ( `t1` ) SUBQUERY ( `t1` ) */ * FROM `t1` , `t2`
|
|
a1aa9bd2ed9dcfa8945680dfa96b4dcf81a1a2d5015a7a09d1da22a8ee54ef71 SELECT * FROM `t1` , `t2`
|
|
SELECT * FROM t2, t1;
|
|
SELECT /*+ MAX_EXECUTION_TIME(4294967295) */ * FROM t2, t1;
|
|
SELECT digest, digest_text FROM performance_schema.events_statements_history ORDER BY timer_start DESC LIMIT 2;
|
|
digest digest_text
|
|
f66e71ee60d8eb83847c85deb50d6b99fab5344a31950a444bb484b4c5f9a9c1 SELECT /*+ MAX_EXECUTION_TIME (?) */ * FROM `t2` , `t1`
|
|
a03ffc771fceef026bb78f8bab98e958323e238cd7cfad92753f333ddfcc8ee4 SELECT * FROM `t2` , `t1`
|
|
SELECT 1;
|
|
SELECT /*+ bad_hint_also_goes_to_digest */ 1;
|
|
SELECT digest, digest_text FROM performance_schema.events_statements_history ORDER BY timer_start DESC LIMIT 2;
|
|
digest digest_text
|
|
89f150a009f68612cdd007c047dd0766813dfab6b206b4acfaddbec466c9f4e3 SELECT /*+ `bad_hint_also_goes_to_digest` */ ?
|
|
f1ea6cee1b4090c784ccd0e75f7a9775104fe39bfb43145466867e56b7d469e7 SELECT ?
|
|
DROP TABLE t1, t2;
|
|
#
|
|
# WL#681: Hint to temporarily set session variable for current statement
|
|
#
|
|
SELECT 1;
|
|
SELECT /*+ SET_VAR(foo = 1K) */ 1;
|
|
SELECT digest, digest_text FROM performance_schema.events_statements_history ORDER BY timer_start DESC LIMIT 2;
|
|
digest digest_text
|
|
fbfe844970b264275ca0e0e6808314d2a464c9527120bf925c738ed3be22e112 SELECT /*+ SET_VAR ( `foo` = ? ) */ ?
|
|
f1ea6cee1b4090c784ccd0e75f7a9775104fe39bfb43145466867e56b7d469e7 SELECT ?
|
|
SELECT 1;
|
|
SELECT /*+ SET_VAR(bar = 'baz') */ 1;
|
|
SELECT digest, digest_text FROM performance_schema.events_statements_history ORDER BY timer_start DESC LIMIT 2;
|
|
digest digest_text
|
|
abc8019832d82cd427fe86ca614b9df1b7f86904405d0005c47e0c253d2a1e7c SELECT /*+ SET_VAR ( `bar` = ? ) */ ?
|
|
f1ea6cee1b4090c784ccd0e75f7a9775104fe39bfb43145466867e56b7d469e7 SELECT ?
|