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| author | Sergey Petrunya <psergey@askmonty.org> | 2009-12-15 10:16:46 +0300 |
|---|---|---|
| committer | Sergey Petrunya <psergey@askmonty.org> | 2009-12-15 10:16:46 +0300 |
| commit | 96e092dc73529978053c1e41aa09b70fd2c7c408 (patch) | |
| tree | b6e8286b05a0b2e8772ec6da055337812d60b3e8 /mysql-test/r/key_cache.result | |
| parent | e4e1ae0d13da399d53bd91df791b149f3eae796b (diff) | |
| download | mariadb-git-96e092dc73529978053c1e41aa09b70fd2c7c408.tar.gz | |
Backport into MariaDB-5.2 the following:
WL#2474 "Multi Range Read: Change the default MRR implementation to implement new MRR interface"
WL#2475 "Batched range read functions for MyISAM/InnoDb"
"Index condition pushdown for MyISAM/InnoDB"
Igor's fix from sp1r-igor@olga.mysql.com-20080330055902-07614:
There could be observed the following problems:
1. EXPLAIN did not mention pushdown conditions from on expressions in the
'extra' column. As a result if a query had no where conditions pushed
down to a table, but had on conditions pushed to this table the 'extra'
column in the EXPLAIN for the table missed 'using where'.
2. Conditions for ref access were not eliminated from on expressions
though such conditions were eliminated from the where condition.
Diffstat (limited to 'mysql-test/r/key_cache.result')
| -rw-r--r-- | mysql-test/r/key_cache.result | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mysql-test/r/key_cache.result b/mysql-test/r/key_cache.result index 08d8059f61b..8450b4632e8 100644 --- a/mysql-test/r/key_cache.result +++ b/mysql-test/r/key_cache.result @@ -134,7 +134,7 @@ i explain select count(*) from t1, t2 where t1.p = t2.i; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 index PRIMARY PRIMARY 4 NULL 2 Using index -1 SIMPLE t2 ref k1 k1 5 test.t1.p 2 Using where; Using index +1 SIMPLE t2 ref k1 k1 5 test.t1.p 2 Using index select count(*) from t1, t2 where t1.p = t2.i; count(*) 3 |