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order_by.result:

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result of the test case for FORCE INDEX on ORDER BY
order_by.test:
  test case for FORCE INDEX on ORDER BY
sql_select.cc:
  Changing behaviour that MySQL server takes FORCE INDEX clause into account when optimising ORDER BY clause
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Sinisa@sinisa.nasamreza.org
2004-03-26 17:01:13 +02:00
parent 2d970b2ea4
commit 09d26f0ff6
3 changed files with 32 additions and 3 deletions
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mysql-test/r/order_by.result
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@@ -546,3 +546,11 @@ CREATE TABLE t1 (a INT, b INT);
SET @id=0;
UPDATE t1 SET a=0 ORDER BY (a=@id), b;
DROP TABLE t1;
create table t1(id int not null auto_increment primary key, t char(12));
explain select id,t from t1 order by id;
table type possible_keys key key_len ref rows Extra
t1 ALL NULL NULL NULL NULL 1000 Using filesort
explain select id,t from t1 force index (primary) order by id;
table type possible_keys key key_len ref rows Extra
t1 index NULL PRIMARY 4 NULL 1000
drop table t1;