From 5b5a12395ccbb72e8a63235f825b6aa45abab1ba Mon Sep 17 00:00:00 2001 From: unknown Date: Tue, 12 Apr 2005 12:04:43 +0200 Subject: BUG#8924 'Explain' shows different strategy - If number of records in table is 4, the calculated cost for using "index" and "range" become so close so that any rounding errors becomes visible. - Added one more record to the tables for heap test and expoect "range" to be selected - Decrease number of records in t1 for range and expect "index" to be choosen. mysql-test/r/heap.result: Add one more record to table t1 and expect explain to use "range" mysql-test/r/heap_btree.result: Add one more record to table t1 and expect explain to use "range" mysql-test/r/heap_hash.result: Add one more record to table t1 and expect explain to use "range" mysql-test/r/range.result: Update results mysql-test/t/heap.test: Add one more record to table t1 and expect explain to use "range" mysql-test/t/heap_btree.test: Add one more record to table t1 and expect explain to use "range" mysql-test/t/heap_hash.test: Add one more record to table t1 in order for optimizer to select use of "range" deterministic mysql-test/t/range.test: Remove one record from table t1 to avoid that cost for "index" and "range" are so close that rounding error become visible. --- mysql-test/r/heap.result | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'mysql-test/r/heap.result') diff --git a/mysql-test/r/heap.result b/mysql-test/r/heap.result index 631bd8c713c..37214e12d63 100644 --- a/mysql-test/r/heap.result +++ b/mysql-test/r/heap.result @@ -40,7 +40,7 @@ a b 4 4 drop table t1; create table t1 (a int not null) engine=heap; -insert into t1 values (869751),(736494),(226312),(802616); +insert into t1 values (869751),(736494),(226312),(802616),(728912); select * from t1 where a > 736494; a 869751 @@ -66,7 +66,7 @@ a alter table t1 engine=myisam; explain select * from t1 where a in (869751,736494,226312,802616); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 index uniq_id uniq_id 4 NULL 4 Using where; Using index +1 SIMPLE t1 range uniq_id uniq_id 4 NULL 4 Using where; Using index drop table t1; create table t1 (x int not null, y int not null, key x (x), unique y (y)) engine=heap; -- cgit v1.2.1