52 lines
1.9 KiB
Plaintext
52 lines
1.9 KiB
Plaintext
#
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# Bug #21286261: QUERY DIGEST DOES NOT REFLECT NEW OPTIMIZER HINTS
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#
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CREATE TABLE t1(i INT);
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CREATE TABLE t2(i INT);
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# Digests should be same (empty hint comment):
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SELECT * FROM t1;
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SELECT /*+ */ * FROM t1;
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SELECT digest, digest_text FROM performance_schema.events_statements_history ORDER BY timer_start DESC LIMIT 2;
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digest digest_text
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23a2bd5d5f00f61920a837cbec0340c8 SELECT * FROM `t1`
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23a2bd5d5f00f61920a837cbec0340c8 SELECT * FROM `t1`
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# Digests should be different:
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SELECT * FROM t1, t2;
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SELECT /*+
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BKA(t1@qb1)
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BNL(@qb1 t1)
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DUPSWEEDOUT
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FIRSTMATCH
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INTOEXISTS
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LOOSESCAN
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MATERIALIZATION
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MRR(t1)
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NO_BKA(t2)
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NO_BNL(t2)
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NO_ICP(t2)
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NO_MRR(t2)
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NO_RANGE_OPTIMIZATION(t2)
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NO_SEMIJOIN(t2)
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QB_NAME(qb1)
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SEMIJOIN(t1)
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SUBQUERY(t1)
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*/ * FROM t1, t2;
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SELECT digest, digest_text FROM performance_schema.events_statements_history ORDER BY timer_start DESC LIMIT 2;
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digest digest_text
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b5dcadc964d9c74aeaafbc7422843058 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`
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b52b5a0d94d733e8e605cd1152080d8a SELECT * FROM `t1` , `t2`
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SELECT * FROM t2, t1;
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SELECT /*+ MAX_EXECUTION_TIME(10) */ * FROM t2, t1;
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SELECT digest, digest_text FROM performance_schema.events_statements_history ORDER BY timer_start DESC LIMIT 2;
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digest digest_text
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def05dbaf5e5ab9af48b70c27c603de2 SELECT /*+ MAX_EXECUTION_TIME (?) */ * FROM `t2` , `t1`
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1613448fc70feba2d3302a92ea1cc139 SELECT * FROM `t2` , `t1`
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SELECT 1;
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SELECT /*+ bad_hint_also_goes_to_digest */ 1;
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SELECT digest, digest_text FROM performance_schema.events_statements_history ORDER BY timer_start DESC LIMIT 2;
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digest digest_text
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7936911d8f35e950c5c3bbc98eee3c4f SELECT /*+ `bad_hint_also_goes_to_digest` */ ?
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3d4fc22e33e10d7235eced3c75a84c2c SELECT ?
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DROP TABLE t1, t2;
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#
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