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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 /storage/myisam/mi_extra.c | |
| 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 'storage/myisam/mi_extra.c')
| -rw-r--r-- | storage/myisam/mi_extra.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/storage/myisam/mi_extra.c b/storage/myisam/mi_extra.c index 9c5dade28ab..7bb79108357 100644 --- a/storage/myisam/mi_extra.c +++ b/storage/myisam/mi_extra.c @@ -403,6 +403,12 @@ int mi_extra(MI_INFO *info, enum ha_extra_function function, void *extra_arg) DBUG_RETURN(error); } /* mi_extra */ +void mi_set_index_cond_func(MI_INFO *info, index_cond_func_t func, + void *func_arg) +{ + info->index_cond_func= func; + info->index_cond_func_arg= func_arg; +} /* Start/Stop Inserting Duplicates Into a Table, WL#1648. |