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fixed bug of multi-level EXPLAIN

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This commit is contained in:
bell@sanja.is.com.ua
2002-10-13 14:25:16 +03:00
parent f6d9e96fbc
commit d9f998164d
7 changed files with 25 additions and 4 deletions
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8
mysql-test/r/subselect.result
View File

@ -159,6 +159,14 @@ UNIQUE KEY `email` (`email`)
INSERT INTO inscrit (pseudo,email) VALUES ('joce','test');
INSERT INTO inscrit (pseudo,email) VALUES ('joce1','test1');
INSERT INTO inscrit (pseudo,email) VALUES ('2joce1','2test1');
EXPLAIN SELECT pseudo,(SELECT email FROM inscrit WHERE pseudo=(SELECT
pseudo FROM inscrit WHERE pseudo='joce')) FROM inscrit WHERE pseudo=(SELECT
pseudo FROM inscrit WHERE pseudo='joce');
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY inscrit const PRIMARY PRIMARY 35 const 1
4 SUBSELECT inscrit const PRIMARY PRIMARY 35 const 1
2 SUBSELECT inscrit const PRIMARY PRIMARY 35 const 1
3 SUBSELECT inscrit const PRIMARY PRIMARY 35 const 1
SELECT pseudo FROM inscrit WHERE pseudo=(SELECT pseudo,email FROM
inscrit WHERE pseudo='joce');
Subselect returns more than 1 field

3
mysql-test/t/subselect.test
View File

@ -82,6 +82,9 @@ CREATE TABLE `inscrit` (
INSERT INTO inscrit (pseudo,email) VALUES ('joce','test');
INSERT INTO inscrit (pseudo,email) VALUES ('joce1','test1');
INSERT INTO inscrit (pseudo,email) VALUES ('2joce1','2test1');
EXPLAIN SELECT pseudo,(SELECT email FROM inscrit WHERE pseudo=(SELECT
pseudo FROM inscrit WHERE pseudo='joce')) FROM inscrit WHERE pseudo=(SELECT
pseudo FROM inscrit WHERE pseudo='joce');
-- error 1239
SELECT pseudo FROM inscrit WHERE pseudo=(SELECT pseudo,email FROM
inscrit WHERE pseudo='joce');