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fowwlowup fixes for index_flags()

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This commit is contained in:
serg@serg.mylan
2004-06-30 10:40:15 +02:00
parent a99468259b
commit 08738d2847
6 changed files with 23 additions and 23 deletions
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11
sql/sql_select.cc
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@ -2825,7 +2825,7 @@ find_best(JOIN *join,table_map rest_tables,uint idx,double record_count,
Set tmp to (previous record count) * (records / combination)
*/
if ((found_part & 1) &&
(!(table->file->index_flags(key) & HA_ONLY_WHOLE_INDEX) ||
(!(table->file->index_flags(key,0) & HA_ONLY_WHOLE_INDEX) ||
found_part == PREV_BITS(uint,keyinfo->key_parts)))
{
max_key_part=max_part_bit(found_part);
@ -7171,7 +7171,9 @@ test_if_skip_sort_order(JOIN_TAB *tab,ORDER *order,ha_rows select_limit,
*/
if (!select->quick->reverse_sorted())
{
if (!(table->file->index_flags(ref_key) & HA_READ_PREV))
// here used_key_parts >0
if (!(table->file->index_flags(ref_key,used_key_parts-1)
& HA_READ_PREV))
DBUG_RETURN(0); // Use filesort
// ORDER BY range_key DESC
QUICK_SELECT_DESC *tmp=new QUICK_SELECT_DESC(select->quick,
@ -7193,8 +7195,9 @@ test_if_skip_sort_order(JOIN_TAB *tab,ORDER *order,ha_rows select_limit,
Use a traversal function that starts by reading the last row
with key part (A) and then traverse the index backwards.
*/
if (!(table->file->index_flags(ref_key) & HA_READ_PREV))
DBUG_RETURN(0); // Use filesort
if (!(table->file->index_flags(ref_key,used_key_parts-1)
& HA_READ_PREV))
DBUG_RETURN(0); // Use filesort
tab->read_first_record= join_read_last_key;
tab->read_record.read_record= join_read_prev_same;
/* fall through */