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Merge rkalimullin@bk-internal.mysql.com:/home/bk/mysql-4.1-maint

Browse source 
into  mysql.com:/usr/home/ram/work/bug20732/my41-bug20732
This commit is contained in:
unknown 2006-10-23 13:25:24 +05:00
commit 6597ef1fed
6 changed files with 29 additions and 5 deletions
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10
mysql-test/r/range.result
View file

@ -649,3 +649,13 @@ OR ((pk4 =1) AND (((pk1 IN ( 7, 2, 1 ))) OR (pk1 =522)) AND ((pk2 IN ( 0, 2635))
pk1 pk2 pk3 pk4 filler
2621 2635 1000015 0 filler
drop table t1, t2;
create table t1(a char(2), key(a(1)));
insert into t1 values ('x'), ('xx');
explain select a from t1 where a > 'x';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 range a a 2 NULL 2 Using where
select a from t1 where a > 'x';
a
xx
drop table t1;
End of 4.1 tests

12
mysql-test/t/range.test
View file

@ -510,4 +510,14 @@ OR ((pk4 =1) AND (((pk1 IN ( 7, 2, 1 ))) OR (pk1 =522)) AND ((pk2 IN ( 0, 2635))
) AND (pk3 >=1000000);
drop table t1, t2;
# End of 4.1 tests
#
# Bug #20732: Partial index and long sjis search with '>' fails sometimes
#
create table t1(a char(2), key(a(1)));
insert into t1 values ('x'), ('xx');
explain select a from t1 where a > 'x';
select a from t1 where a > 'x';
drop table t1;
--echo End of 4.1 tests

6
sql/opt_range.cc
View file

@ -885,6 +885,7 @@ int SQL_SELECT::test_quick_select(THD *thd, key_map keys_to_use,
key_parts->null_bit= key_part_info->null_bit;
key_parts->image_type =
(key_info->flags & HA_SPATIAL) ? Field::itMBR : Field::itRAW;
key_parts->flag= key_part_info->key_part_flag;
}
param.real_keynr[param.keys++]=idx;
}
@ -1398,7 +1399,9 @@ get_mm_leaf(PARAM *param, COND *conf_func, Field *field, KEY_PART *key_part,
}
break;
case Item_func::GT_FUNC:
if (field_is_equal_to_item(field,value))
/* Don't use open ranges for partial key_segments */
if (field_is_equal_to_item(field,value) &&
!(key_part->flag & HA_PART_KEY_SEG))
tree->min_flag=NEAR_MIN;
/* fall through */
case Item_func::GE_FUNC:
@ -2899,6 +2902,7 @@ QUICK_SELECT *get_quick_select_for_ref(THD *thd, TABLE *table, TABLE_REF *ref)
key_part->length= key_info->key_part[part].length;
key_part->store_length= key_info->key_part[part].store_length;
key_part->null_bit= key_info->key_part[part].null_bit;
key_part->flag= key_info->key_part[part].key_part_flag;
}
if (quick->ranges.push_back(range))
goto err;

2
sql/opt_range.h
View file

@ -36,7 +36,7 @@
typedef struct st_key_part {
uint16 key,part, store_length, length;
uint8 null_bit;
uint8 null_bit, flag;
Field *field;
Field::imagetype image_type;
} KEY_PART;

2
sql/sql_select.cc
View file

@ -7337,7 +7337,7 @@ part_of_refkey(TABLE *table,Field *field)
for (uint part=0 ; part < ref_parts ; part++,key_part++)
if (field->eq(key_part->field) &&
!(key_part->key_part_flag & HA_PART_KEY_SEG))
!(key_part->key_part_flag & (HA_PART_KEY_SEG | HA_NULL_PART)))
return table->reginfo.join_tab->ref.items[part];
}
return (Item*) 0;

2
sql/table.cc
View file

@ -676,7 +676,7 @@ int openfrm(const char *name, const char *alias, uint db_stat, uint prgflag,
as we need to test for NULL = NULL.
*/
if (field->real_maybe_null())
key_part->key_part_flag|= HA_PART_KEY_SEG;
key_part->key_part_flag|= HA_NULL_PART;
}
else
{ // Error: shorten key