database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-07-30 16:24:05 +03:00
Code Activity

Fix some ORDER BY ... DESC problems with InnoDB

Browse Source 
sql/ha_heap.h:
  Move HA_NOT_READ_PREFIX_LAST to index_flags()
sql/ha_isammrg.h:
  Move HA_NOT_READ_PREFIX_LAST to index_flags()
sql/handler.h:
  Added comment
sql/sql_select.cc:
  Test HA_NOT_READ_PREFIX_LAST from index_flags() instead of table_flags().
  Should fix some ORDER BY ... DESC problems with InnoDB
This commit is contained in:
unknown
2002-09-27 08:23:51 +03:00
parent f78951aa3c
commit 492d53fa50
4 changed files with 7 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
sql/sql_select.cc
View File

@ -5576,7 +5576,7 @@ 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->table_flags() & HA_NOT_READ_PREFIX_LAST)
if (table->file->index_flags(ref_key) & HA_NOT_READ_PREFIX_LAST)
DBUG_RETURN(0); // Use filesort
tab->read_first_record= join_read_last_key;
tab->read_record.read_record= join_read_prev_same;