database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-09-11 05:52:26 +03:00
Code Activity

table.h, sql_select.h:

Browse Source 
Added the code processing on expressions for applying
  multiple equalities.
sql_select.cc:
  Post-merge fixes for Item_equal patch.
  Added the code processing on expressions for applying
  multiple equalities.
Many files:
  Post-merge fixes for Item_equal patch.
item_cmpfunc.cc:
  Post-merge fixes for Item_equal patch.
  Fixed a problem when an equality field=const cannot be applied to
  the predicate P(field,c) for constant propagation as a conversion
  of field is needed.
item.h, item.cc:
  Fixed a problem when an equality field=const cannot be applied to
  the predicate P(field,c) for constant propagation as a conversion
  of field is needed.
This commit is contained in:
igor@rurik.mysql.com
2004-10-19 14:12:55 -07:00
parent 71f6ab7a09
commit 4c8e391718
12 changed files with 416 additions and 160 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
mysql-test/r/range.result
View File

@@ -254,12 +254,12 @@ INSERT INTO t2 VALUES (0),(0),(1),(1),(2),(2);
explain select * from t1, t2 where (t1.key1 <t2.keya + 1) and t2.keya=3;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ref j1 j1 4 const 1 Using index
1 SIMPLE t1 ALL i1 NULL NULL NULL 4 Range checked for each record (index map: 0x1)
1 SIMPLE t1 index i1 i1 4 NULL 4 Using where; Using index
explain select * from t1 force index(i1), t2 force index(j1) where
(t1.key1 <t2.keya + 1) and t2.keya=3;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ref j1 j1 4 const 1 Using index
1 SIMPLE t1 ALL i1 NULL NULL NULL 4 Range checked for each record (index map: 0x1)
1 SIMPLE t1 index i1 i1 4 NULL 4 Using where; Using index
DROP TABLE t1,t2;
CREATE TABLE t1 (
a int(11) default NULL,