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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/negation_elimination.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/negation_elimination.result')
| -rw-r--r-- | mysql-test/r/negation_elimination.result | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mysql-test/r/negation_elimination.result b/mysql-test/r/negation_elimination.result index 91a4c273832..dea0d865d87 100644 --- a/mysql-test/r/negation_elimination.result +++ b/mysql-test/r/negation_elimination.result @@ -79,7 +79,7 @@ a 19 explain select * from t1 where not(a != 10); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref a a 5 const 1 Using where; Using index +1 SIMPLE t1 ref a a 5 const 1 Using index select * from t1 where not(a != 1); a 1 |