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Igor Babaev 2011-07-18 23:21:48 -07:00
commit cfc7896461
3 changed files with 83 additions and 3 deletions
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54
mysql-test/r/derived_view.result
View file

@ -743,7 +743,7 @@ SELECT * FROM t1, t2, v1 WHERE t2.a=t1.a AND t2.a=v1.a AND t2.a=v1.b;
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 system NULL NULL NULL NULL 1
1 PRIMARY t2 ref a a 4 const 1 Using index
1 PRIMARY <derived2> ref key1 key1 10 test.t1.a,test.t1.a 2 Using where
1 PRIMARY <derived2> ref key1 key1 10 test.t1.a,test.t1.a 2
2 DERIVED t3 ALL NULL NULL NULL NULL 3 Using temporary; Using filesort
SELECT * FROM t1, t2, v1 WHERE t2.a=t1.a AND t2.a=v1.a AND t2.a=v1.b;
a a a b
@ -1050,7 +1050,7 @@ id select_type table type possible_keys key key_len ref rows Extra
DROP VIEW v1;
DROP TABLE t1,t2,t3;
#
# LP bug #809179
# LP bug #809179: right join over a derived table / view
#
CREATE TABLE t1 (a int, b int);
INSERT INTO t1 VALUES (6,5);
@ -1116,3 +1116,53 @@ INSERT INTO v3(a) VALUES (1);
ERROR HY000: The target table v3 of the INSERT is not insertable-into
DROP VIEW v1,v2,v3;
DROP TABLE t1,t2,t3;
#
# LP bug #793448: materialized view accessed by two-component key
#
CREATE TABLE t1 (a int, b int);
INSERT INTO t1 VALUES (9,3), (2,5);
CREATE TABLE t2 (a int, b int);
INSERT INTO t2 VALUES (9,3), (3,7), (9,1), (2,5), (2,4), (3,8);
CREATE TABLE t3 (a int, b int);
INSERT INTO t3 VALUES (10,3), (9,7), (9,1), (2,4);
CREATE VIEW v1(a,b) AS SELECT a, MAX(b) FROM t2 GROUP BY a;
CREATE VIEW v2(a,b) AS SELECT a,b FROM t2 UNION SELECT a,b FROM t3;
SELECT * FROM v1;
a b
2 5
3 8
9 3
SELECT a FROM t1 WHERE (a,b) IN (SELECT * FROM v1);
a
9
2
EXPLAIN
SELECT a FROM t1 WHERE (a,b) IN (SELECT * FROM v1);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where
2 DEPENDENT SUBQUERY <derived3> index_subquery key0 key0 10 func,func 2 Using where
3 DERIVED t2 ALL NULL NULL NULL NULL 6 Using temporary; Using filesort
SELECT * FROM v2;
a b
9 3
3 7
9 1
2 5
2 4
3 8
10 3
9 7
SELECT a FROM t1 WHERE (a,b) IN (SELECT * FROM v2);
a
9
2
EXPLAIN
SELECT a FROM t1 WHERE (a,b) IN (SELECT * FROM v2);
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where
2 DEPENDENT SUBQUERY <derived3> index_subquery key0 key0 10 func,func 2 Using where
3 DERIVED t2 ALL NULL NULL NULL NULL 6
4 UNION t3 ALL NULL NULL NULL NULL 4
NULL UNION RESULT <union3,4> ALL NULL NULL NULL NULL NULL
DROP VIEW v1,v2;
DROP TABLE t1,t2,t3;

31
mysql-test/t/derived_view.test
View file

@ -616,7 +616,7 @@ DROP VIEW v1;
DROP TABLE t1,t2,t3;
--echo #
--echo # LP bug #809179
--echo # LP bug #809179: right join over a derived table / view
--echo #
CREATE TABLE t1 (a int, b int);
@ -668,3 +668,32 @@ INSERT INTO v3(a) VALUES (1);
DROP VIEW v1,v2,v3;
DROP TABLE t1,t2,t3;
--echo #
--echo # LP bug #793448: materialized view accessed by two-component key
--echo #
CREATE TABLE t1 (a int, b int);
INSERT INTO t1 VALUES (9,3), (2,5);
CREATE TABLE t2 (a int, b int);
INSERT INTO t2 VALUES (9,3), (3,7), (9,1), (2,5), (2,4), (3,8);
CREATE TABLE t3 (a int, b int);
INSERT INTO t3 VALUES (10,3), (9,7), (9,1), (2,4);
CREATE VIEW v1(a,b) AS SELECT a, MAX(b) FROM t2 GROUP BY a;
CREATE VIEW v2(a,b) AS SELECT a,b FROM t2 UNION SELECT a,b FROM t3;
SELECT * FROM v1;
SELECT a FROM t1 WHERE (a,b) IN (SELECT * FROM v1);
EXPLAIN
SELECT a FROM t1 WHERE (a,b) IN (SELECT * FROM v1);
SELECT * FROM v2;
SELECT a FROM t1 WHERE (a,b) IN (SELECT * FROM v2);
EXPLAIN
SELECT a FROM t1 WHERE (a,b) IN (SELECT * FROM v2);
DROP VIEW v1,v2;
DROP TABLE t1,t2,t3;

1
sql/sql_select.cc
View file

@ -8332,6 +8332,7 @@ uint get_next_field_for_derived_key(uchar *arg)
keyuse->keypart= keypart;
if (keyuse->key != key)
keyuse= 0;
*((KEYUSE **) arg)= keyuse;
return fldno;
}