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BUG#8924 'Explain' shows different strategy

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- 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.
This commit is contained in:
unknown
2005-04-12 12:04:43 +02:00
parent e997201180
commit 5b5a12395c
8 changed files with 13 additions and 13 deletions
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2
mysql-test/t/heap_btree.test
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@@ -34,7 +34,7 @@ select * from t1;
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;
alter table t1 add unique uniq_id using BTREE (a);
select * from t1 where a > 736494;