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test of changing subselects tree

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2002-11-28 23:31:48 +02:00
parent 4078d0deff
commit 3ec9f7e1c4
2 changed files with 11 additions and 0 deletions
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9
mysql-test/r/subselect.result
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@@ -532,6 +532,15 @@ Note 1246 Select 2 was reduced during optimisation
SELECT * FROM t WHERE id IN (SELECT 1 UNION SELECT 3);
id
1
SELECT * FROM t WHERE id IN (SELECT 1+(select 1));
id
2
EXPLAIN SELECT * FROM t WHERE id IN (SELECT 1+(select 1));
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t ref id id 5 const 1 Using where; Using index
3 SUBSELECT No tables used
Warnings:
Note 1246 Select 2 was reduced during optimisation
EXPLAIN SELECT * FROM t WHERE id IN (SELECT 1 UNION SELECT 3);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t index NULL id 5 NULL 2 Using where; Using index

2
mysql-test/t/subselect.test
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@@ -317,6 +317,8 @@ INSERT INTO t VALUES (1),(2);
SELECT * FROM t WHERE id IN (SELECT 1);
EXPLAIN SELECT * FROM t WHERE id IN (SELECT 1);
SELECT * FROM t WHERE id IN (SELECT 1 UNION SELECT 3);
SELECT * FROM t WHERE id IN (SELECT 1+(select 1));
EXPLAIN SELECT * FROM t WHERE id IN (SELECT 1+(select 1));
EXPLAIN SELECT * FROM t WHERE id IN (SELECT 1 UNION SELECT 3);
SELECT * FROM t WHERE id IN (SELECT 5 UNION SELECT 3);
SELECT * FROM t WHERE id IN (SELECT 5 UNION SELECT 2);