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Portability fixes

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Fixed bug in end space handle for WHERE text_column="constant"
This commit is contained in:
monty@mysql.com
2004-08-26 18:26:38 +03:00
parent 4ca548bcc6
commit ea687ba5da
28 changed files with 254 additions and 164 deletions
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51
sql/sql_select.cc
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@ -833,7 +833,8 @@ JOIN::optimize()
((group_list && const_tables != tables &&
(!simple_group ||
!test_if_skip_sort_order(&join_tab[const_tables], group_list,
unit->select_limit_cnt, 0))) || select_distinct) &&
unit->select_limit_cnt, 0))) ||
select_distinct) &&
tmp_table_param.quick_group && !procedure)
{
need_tmp=1; simple_order=simple_group=0; // Force tmp table without sort
@ -2163,22 +2164,32 @@ add_key_field(KEY_FIELD **key_fields,uint and_level, COND *cond,
number. cmp_type() is checked to allow compare of dates to numbers.
eq_func is NEVER true when num_values > 1
*/
if (!eq_func ||
field->result_type() == STRING_RESULT &&
(*value)->result_type() != STRING_RESULT &&
field->cmp_type() != (*value)->result_type())
return;
/*
We can't use indexes if the effective collation
of the operation differ from the field collation.
*/
if (field->result_type() == STRING_RESULT &&
(*value)->result_type() == STRING_RESULT &&
field->cmp_type() == STRING_RESULT &&
((Field_str*)field)->charset() != cond->compare_collation())
return;
if (!eq_func)
return;
if (field->result_type() == STRING_RESULT)
{
if ((*value)->result_type() != STRING_RESULT)
{
if (field->cmp_type() != (*value)->result_type())
return;
}
else
{
/*
We can't use indexes if the effective collation
of the operation differ from the field collation.
We can also not used index on a text column, as the column may
contain 'x' 'x\t' 'x ' and 'read_next_same' will stop after
'x' when searching for WHERE col='x '
*/
if (field->cmp_type() == STRING_RESULT &&
(((Field_str*)field)->charset() != cond->compare_collation() ||
((*value)->type() != Item::NULL_ITEM &&
(field->flags & BLOB_FLAG) && !field->binary())))
return;
}
}
}
}
DBUG_ASSERT(num_values == 1);
@ -5564,9 +5575,7 @@ bool create_myisam_from_heap(THD *thd, TABLE *table, TMP_TABLE_PARAM *param,
table->file->info(HA_STATUS_VARIABLE); /* update table->file->records */
new_table.file->start_bulk_insert(table->file->records);
#else
/*
HA_EXTRA_WRITE_CACHE can stay until close, no need to disable it explicitly.
*/
/* HA_EXTRA_WRITE_CACHE can stay until close, no need to disable it */
new_table.file->extra(HA_EXTRA_WRITE_CACHE);
#endif
@ -7234,9 +7243,9 @@ test_if_skip_sort_order(JOIN_TAB *tab,ORDER *order,ha_rows select_limit,
keys.merge(table->used_keys);
/*
We are adding here also the index speified in FORCE INDEX clause,
We are adding here also the index specified in FORCE INDEX clause,
if any.
This is to allow users to use index in ORDER BY.
This is to allow users to use index in ORDER BY.
*/
if (table->force_index)
keys.merge(table->keys_in_use_for_query);