From c2cb9b97be721d07e9cb2a27076c8beaf22f304b Mon Sep 17 00:00:00 2001 From: unknown Date: Fri, 27 Jun 2003 03:04:54 +0300 Subject: Added thread variable max_seeks_for_key Change optimizer to prefer key lookups before table scan Change table scans to be done after tables with constrains on scanned table mysql-test/r/distinct.result: Update results mysql-test/r/group_by.result: Update results mysql-test/r/heap.result: Update results mysql-test/r/join.result: Update results mysql-test/r/key_diff.result: Update results mysql-test/r/myisam.result: Update results mysql-test/r/order_by.result: Update results mysql-test/r/select_safe.result: Update results mysql-test/t/distinct.test: Change test to be repeatable mysql-test/t/join.test: Change test to be repeatable mysql-test/t/select_safe.test: Add tests for MAX_SEEKS_FOR_KEY sql/handler.h: Optimize structure for 64 bit machines (and to avoid problems with gdb) sql/item_cmpfunc.cc: Initialize not_null_tables_cache properly sql/mysqld.cc: Added max_seeks_for_key sql/set_var.cc: Added max_seeks_for_key sql/sql_class.h: Added max_seeks_for_key sql/sql_select.cc: Added max_seeks_for_key Change optimizer to prefer key lookups before table scan. Change table scans to be done after tables with constrains on scanned table --- mysql-test/r/key_diff.result | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'mysql-test/r/key_diff.result') diff --git a/mysql-test/r/key_diff.result b/mysql-test/r/key_diff.result index 4eaccc696f9..2d4bc19474f 100644 --- a/mysql-test/r/key_diff.result +++ b/mysql-test/r/key_diff.result @@ -36,7 +36,7 @@ a a a a explain select t1.*,t2.* from t1,t1 as t2 where t1.A=t2.B; table type possible_keys key key_len ref rows Extra t1 ALL a NULL NULL NULL 5 -t2 ALL b NULL NULL NULL 5 Using where +t2 ALL b NULL NULL NULL 4 Using where select t1.*,t2.* from t1,t1 as t2 where t1.A=t2.B order by binary t1.a,t2.a; a b a b A B a a -- cgit v1.2.1