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Fix for BUG#13317: Make range optimizer able to produce ranges for "view.field IN (c1,c2)"

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and "view.field BETWEEN c1 AND c2"
This commit is contained in:
sergefp@mysql.com
2005-09-21 21:36:15 +04:00
parent 468610635b
commit 7aca974fc8
3 changed files with 45 additions and 4 deletions
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19
mysql-test/r/range.result
View File

@ -768,3 +768,22 @@ SELECT * FROM t1;
a a
2 2
DROP TABLE t1; DROP TABLE t1;
create table t1 (a int, b int, primary key(a,b));
create view v1 as select a, b from t1;
INSERT INTO `t1` VALUES
(0,0),(1,0),(2,0),(3,0),(4,0),(5,1),(6,1),(7,1),(8,1),(9,1),(10,2),(11,2),(12,2)
,(13,2),(14,2),(15,3),(16,3),(17,3),(18,3),(19,3);
explain select * from t1 where a in (3,4) and b in (1,2,3);
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range PRIMARY PRIMARY 8 NULL # Using where; Using index
explain select * from v1 where a in (3,4) and b in (1,2,3);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 range PRIMARY PRIMARY 8 NULL # Using where; Using index
explain select * from t1 where a between 3 and 4 and b between 1 and 2;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range PRIMARY PRIMARY 8 NULL # Using where; Using index
explain select * from v1 where a between 3 and 4 and b between 1 and 2;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 range PRIMARY PRIMARY 8 NULL # Using where; Using index
drop view v1;
drop table t1;

22
mysql-test/t/range.test
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@ -578,3 +578,25 @@ DELETE FROM t1 WHERE NOT(a <=> 2);
SELECT * FROM t1; SELECT * FROM t1;
DROP TABLE t1; DROP TABLE t1;
#
# BUG#13317: range optimization doesn't work for IN over VIEW.
#
create table t1 (a int, b int, primary key(a,b));
create view v1 as select a, b from t1;
INSERT INTO `t1` VALUES
(0,0),(1,0),(2,0),(3,0),(4,0),(5,1),(6,1),(7,1),(8,1),(9,1),(10,2),(11,2),(12,2)
,(13,2),(14,2),(15,3),(16,3),(17,3),(18,3),(19,3);
--replace_column 9 #
explain select * from t1 where a in (3,4) and b in (1,2,3);
--replace_column 9 #
explain select * from v1 where a in (3,4) and b in (1,2,3);
--replace_column 9 #
explain select * from t1 where a between 3 and 4 and b between 1 and 2;
--replace_column 9 #
explain select * from v1 where a between 3 and 4 and b between 1 and 2;
drop view v1;
drop table t1;

8
sql/opt_range.cc
View File

@ -3533,17 +3533,17 @@ static SEL_TREE *get_mm_tree(PARAM *param,COND *cond)
switch (cond_func->functype()) { switch (cond_func->functype()) {
case Item_func::BETWEEN: case Item_func::BETWEEN:
if (cond_func->arguments()[0]->type() != Item::FIELD_ITEM) if (cond_func->arguments()[0]->real_item()->type() != Item::FIELD_ITEM)
DBUG_RETURN(0); DBUG_RETURN(0);
field_item= (Item_field*) (cond_func->arguments()[0]); field_item= (Item_field*) (cond_func->arguments()[0]->real_item());
value= NULL; value= NULL;
break; break;
case Item_func::IN_FUNC: case Item_func::IN_FUNC:
{ {
Item_func_in *func=(Item_func_in*) cond_func; Item_func_in *func=(Item_func_in*) cond_func;
if (func->key_item()->type() != Item::FIELD_ITEM) if (func->key_item()->real_item()->type() != Item::FIELD_ITEM)
DBUG_RETURN(0); DBUG_RETURN(0);
field_item= (Item_field*) (func->key_item()); field_item= (Item_field*) (func->key_item()->real_item());
value= NULL; value= NULL;
break; break;
} }