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Fixed bug #18165.

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Made [NOT]BETWEEN predicates SARGable in respect to the second and 
the third arguments.
This commit is contained in:
igor@rurik.mysql.com
2006-08-16 09:37:19 -07:00
parent 7c73d0b2d6
commit 067d6fdfca
4 changed files with 255 additions and 60 deletions
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19
sql/sql_select.cc
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@ -2796,11 +2796,12 @@ add_key_fields(KEY_FIELD **key_fields,uint *and_level,
break;
case Item_func::OPTIMIZE_KEY:
{
Item **values;
// BETWEEN, IN, NE
if (cond_func->key_item()->real_item()->type() == Item::FIELD_ITEM &&
!(cond_func->used_tables() & OUTER_REF_TABLE_BIT))
{
Item **values= cond_func->arguments()+1;
values= cond_func->arguments()+1;
if (cond_func->functype() == Item_func::NE_FUNC &&
cond_func->arguments()[1]->real_item()->type() == Item::FIELD_ITEM &&
!(cond_func->arguments()[0]->used_tables() & OUTER_REF_TABLE_BIT))
@ -2813,6 +2814,22 @@ add_key_fields(KEY_FIELD **key_fields,uint *and_level,
cond_func->argument_count()-1,
usable_tables);
}
if (cond_func->functype() == Item_func::BETWEEN)
{
values= cond_func->arguments();
for (uint i= 1 ; i < cond_func->argument_count() ; i++)
{
Item_field *field_item;
if (cond_func->arguments()[i]->real_item()->type() == Item::FIELD_ITEM
&&
!(cond_func->arguments()[i]->used_tables() & OUTER_REF_TABLE_BIT))
{
field_item= (Item_field *) (cond_func->arguments()[i]->real_item());
add_key_equal_fields(key_fields, *and_level, cond_func,
field_item, 0, values, 1, usable_tables);
}
}
}
break;
}
case Item_func::OPTIMIZE_OP: