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fixed deleting derived table tree after using (BUG#1536)

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mysql-test/r/subselect.result:
  fixed drop table statement
  test for BUG#1536
mysql-test/t/subselect.test:
  fixed drop table statement
  test for BUG#1536
sql/sql_derived.cc:
  all tree of derived table should be deleted
sql/sql_lex.cc:
  delete subtree method
sql/sql_lex.h:
  delete subtree method
This commit is contained in:
unknown
2003-10-17 15:18:57 +03:00
parent d894f23372
commit 6795b2642b
5 changed files with 54 additions and 4 deletions
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9
mysql-test/r/subselect.result
View File

@@ -1438,4 +1438,11 @@ explain select * from t3 where a > all (select max(b) from t2 group by a);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t3 ALL NULL NULL NULL NULL 3 Using where
2 SUBQUERY t2 ALL NULL NULL NULL NULL 4 Using temporary; Using filesort
drop table if exists t2, t3;
drop table t2, t3;
create table t1 (E1 INTEGER UNSIGNED NOT NULL, E2 INTEGER UNSIGNED NOT NULL, E3 INTEGER UNSIGNED NOT NULL, PRIMARY KEY(E1)
);
insert into t1 VALUES(1,1,1), (2,2,1);
select count(*) from t1 INNER JOIN (SELECT A.E1, A.E2, A.E3 FROM t1 AS A WHERE A.E3 = (SELECT MAX(B.E3) FROM t1 AS B WHERE A.E2 = B.E2)) AS THEMAX ON t1.E1 = THEMAX.E2 AND t1.E1 = t1.E2;
count(*)
2
drop table t1;

11
mysql-test/t/subselect.test
View File

@@ -964,4 +964,13 @@ explain select * from t3 where a >= all (select b from t2);
insert into t2 values (2,2), (2,1), (3,3), (3,1);
select * from t3 where a > all (select max(b) from t2 group by a);
explain select * from t3 where a > all (select max(b) from t2 group by a);
drop table if exists t2, t3;
drop table t2, t3;
#
# deived tables with subquery inside all by one table
#
create table t1 (E1 INTEGER UNSIGNED NOT NULL, E2 INTEGER UNSIGNED NOT NULL, E3 INTEGER UNSIGNED NOT NULL, PRIMARY KEY(E1)
);
insert into t1 VALUES(1,1,1), (2,2,1);
select count(*) from t1 INNER JOIN (SELECT A.E1, A.E2, A.E3 FROM t1 AS A WHERE A.E3 = (SELECT MAX(B.E3) FROM t1 AS B WHERE A.E2 = B.E2)) AS THEMAX ON t1.E1 = THEMAX.E2 AND t1.E1 = t1.E2;
drop table t1;