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3b6a64c247
When the specification of a WITH table referred to a view that used a based table with the same name as the WITH table the server went into an infinite loop because it erroneously resolved the reference to the base table as the reference to the WITH table. With tables used in a view cannot be searched for beyond the scope the view.
762 lines
25 KiB
Plaintext
762 lines
25 KiB
Plaintext
create table t1 (a int, b varchar(32));
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insert into t1 values
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(4,'aaaa' ), (7,'bb'), (1,'ccc'), (4,'dd');
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insert into t1 values
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(3,'eee'), (7,'bb'), (1,'fff'), (4,'ggg');
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create table t2 (c int);
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insert into t2 values
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(2), (4), (5), (3);
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# select certain field in the specification of t
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with t as (select a from t1 where b >= 'c')
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select * from t2,t where t2.c=t.a;
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c a
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4 4
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3 3
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4 4
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select * from t2, (select a from t1 where b >= 'c') as t
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where t2.c=t.a;
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c a
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4 4
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3 3
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4 4
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explain
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with t as (select a from t1 where b >= 'c')
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select * from t2,t where t2.c=t.a;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t2 ALL NULL NULL NULL NULL 4
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1 SIMPLE t1 ALL NULL NULL NULL NULL 8 Using where; Using join buffer (flat, BNL join)
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explain
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select * from t2, (select a from t1 where b >= 'c') as t
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where t2.c=t.a;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t2 ALL NULL NULL NULL NULL 4
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1 SIMPLE t1 ALL NULL NULL NULL NULL 8 Using where; Using join buffer (flat, BNL join)
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# select '*' in the specification of t
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with t as (select * from t1 where b >= 'c')
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select * from t2,t where t2.c=t.a;
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c a b
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4 4 dd
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3 3 eee
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4 4 ggg
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select * from t2, (select * from t1 where b >= 'c') as t
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where t2.c=t.a;
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c a b
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4 4 dd
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3 3 eee
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4 4 ggg
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explain
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with t as (select * from t1 where b >= 'c')
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select * from t2,t where t2.c=t.a;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t2 ALL NULL NULL NULL NULL 4
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1 SIMPLE t1 ALL NULL NULL NULL NULL 8 Using where; Using join buffer (flat, BNL join)
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explain
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select * from t2, (select * from t1 where b >= 'c') as t
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where t2.c=t.a;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t2 ALL NULL NULL NULL NULL 4
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1 SIMPLE t1 ALL NULL NULL NULL NULL 8 Using where; Using join buffer (flat, BNL join)
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# rename fields returned by the specication when defining t
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with t(f1,f2) as (select * from t1 where b >= 'c')
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select * from t2,t where t2.c=t.f1;
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c f1 f2
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4 4 dd
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3 3 eee
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4 4 ggg
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explain
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with t(f1,f2) as (select * from t1 where b >= 'c')
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select * from t2,t where t2.c=t.f1;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t2 ALL NULL NULL NULL NULL 4
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1 SIMPLE t1 ALL NULL NULL NULL NULL 8 Using where; Using join buffer (flat, BNL join)
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# materialized query specifying t
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with t as (select a, count(*) from t1 where b >= 'c' group by a)
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select * from t2,t where t2.c=t.a;
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c a count(*)
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4 4 2
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3 3 1
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select * from t2, (select a, count(*) from t1 where b >= 'c' group by a) as t
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where t2.c=t.a;
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c a count(*)
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4 4 2
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3 3 1
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explain
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with t as (select a, count(*) from t1 where b >= 'c' group by a)
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select * from t2,t where t2.c=t.a;
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t2 ALL NULL NULL NULL NULL 4 Using where
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1 PRIMARY <derived2> ref key0 key0 5 test.t2.c 2
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2 SUBQUERY t1 ALL NULL NULL NULL NULL 8 Using where; Using temporary; Using filesort
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explain
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select * from t2, (select a, count(*) from t1 where b >= 'c' group by a) as t
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where t2.c=t.a;
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t2 ALL NULL NULL NULL NULL 4 Using where
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1 PRIMARY <derived2> ref key0 key0 5 test.t2.c 2
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2 DERIVED t1 ALL NULL NULL NULL NULL 8 Using where; Using temporary; Using filesort
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# specivication of t contains having
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with t as (select a, count(*) from t1 where b >= 'c'
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group by a having count(*)=1 )
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select * from t2,t where t2.c=t.a;
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c a count(*)
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3 3 1
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select * from t2, (select a, count(*) from t1 where b >= 'c'
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group by a having count(*)=1) t
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where t2.c=t.a;
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c a count(*)
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3 3 1
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# main query contains having
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with t as (select * from t2 where c <= 4)
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select a, count(*) from t1,t where t1.a=t.c group by a having count(*)=1;
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a count(*)
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3 1
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select a, count(*) from t1, (select * from t2 where c <= 4) t
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where t1.a=t.c group by a having count(*)=1;
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a count(*)
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3 1
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# main query contains group by + order by
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with t as (select * from t2 where c <= 4 )
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select a, count(*) from t1,t where t1.a=t.c group by a order by count(*);
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a count(*)
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3 1
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4 3
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select a, count(*) from t1, (select * from t2 where c <= 4 ) t
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where t1.a=t.c group by a order by count(*);
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a count(*)
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3 1
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4 3
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# main query contains group by + order by + limit
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with t as (select * from t2 where c <= 4 )
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select a, count(*) from t1,t
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where t1.a=t.c group by a order by count(*) desc limit 1;
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a count(*)
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4 3
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select a, count(*) from t1, (select * from t2 where c <= 4 ) t
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where t1.a=t.c group by a order by count(*) desc limit 1;
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a count(*)
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4 3
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# t is used in a subquery
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with t as (select a from t1 where a<5)
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select * from t2 where c in (select a from t);
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c
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4
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3
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select * from t2
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where c in (select a from (select a from t1 where a<5) as t);
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c
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4
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3
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explain
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with t as (select a from t1 where a<5)
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select * from t2 where c in (select a from t);
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t2 ALL NULL NULL NULL NULL 4
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1 PRIMARY <subquery3> eq_ref distinct_key distinct_key 4 func 1
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3 MATERIALIZED t1 ALL NULL NULL NULL NULL 8 Using where
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explain
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select * from t2
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where c in (select a from (select a from t1 where a<5) as t);
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t2 ALL NULL NULL NULL NULL 4
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1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
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2 MATERIALIZED t1 ALL NULL NULL NULL NULL 8 Using where
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# materialized t is used in a subquery
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with t as (select count(*) as c from t1 where b >= 'c' group by a)
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select * from t2 where c in (select c from t);
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c
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2
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select * from t2
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where c in (select c from (select count(*) as c from t1
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where b >= 'c' group by a) as t);
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c
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2
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explain
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with t as (select count(*) as c from t1 where b >= 'c' group by a)
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select * from t2 where c in (select c from t);
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t2 ALL NULL NULL NULL NULL 4 Using where
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1 PRIMARY <derived2> ref key0 key0 8 test.t2.c 2 Using where; FirstMatch(t2)
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2 SUBQUERY t1 ALL NULL NULL NULL NULL 8 Using where; Using temporary; Using filesort
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explain
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select * from t2
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where c in (select c from (select count(*) as c from t1
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where b >= 'c' group by a) as t);
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t2 ALL NULL NULL NULL NULL 4 Using where
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1 PRIMARY <derived3> ref key0 key0 8 test.t2.c 2 Using where; FirstMatch(t2)
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3 DERIVED t1 ALL NULL NULL NULL NULL 8 Using where; Using temporary; Using filesort
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# two references to t specified by a query
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# selecting a field: both in main query
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with t as (select a from t1 where b >= 'c')
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select * from t as r1, t as r2 where r1.a=r2.a;
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a a
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1 1
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1 1
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4 4
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4 4
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3 3
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1 1
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1 1
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4 4
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4 4
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select * from (select a from t1 where b >= 'c') as r1,
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(select a from t1 where b >= 'c') as r2
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where r1.a=r2.a;
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a a
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1 1
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1 1
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4 4
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4 4
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3 3
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1 1
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1 1
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4 4
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4 4
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explain
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with t as (select a from t1 where b >= 'c')
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select * from t as r1, t as r2 where r1.a=r2.a;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 ALL NULL NULL NULL NULL 8 Using where
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1 SIMPLE t1 ALL NULL NULL NULL NULL 8 Using where; Using join buffer (flat, BNL join)
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explain
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select * from (select a from t1 where b >= 'c') as r1,
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(select a from t1 where b >= 'c') as r2
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where r1.a=r2.a;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 ALL NULL NULL NULL NULL 8 Using where
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1 SIMPLE t1 ALL NULL NULL NULL NULL 8 Using where; Using join buffer (flat, BNL join)
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# two references to materialized t: both in main query
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with t as (select distinct a from t1 where b >= 'c')
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select * from t as r1, t as r2 where r1.a=r2.a;
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a a
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1 1
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4 4
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3 3
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select * from (select distinct a from t1 where b >= 'c') as r1,
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(select distinct a from t1 where b >= 'c') as r2
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where r1.a=r2.a;
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a a
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1 1
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4 4
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3 3
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explain
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with t as (select distinct a from t1 where b >= 'c')
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select * from t as r1, t as r2 where r1.a=r2.a;
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY <derived2> ALL NULL NULL NULL NULL 8 Using where
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1 PRIMARY <derived3> ref key0 key0 5 r1.a 2
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3 SUBQUERY t1 ALL NULL NULL NULL NULL 8 Using where; Using temporary
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2 SUBQUERY t1 ALL NULL NULL NULL NULL 8 Using where; Using temporary
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explain
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select * from (select distinct a from t1 where b >= 'c') as r1,
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(select distinct a from t1 where b >= 'c') as r2
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where r1.a=r2.a;
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY <derived2> ALL NULL NULL NULL NULL 8 Using where
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1 PRIMARY <derived3> ref key0 key0 5 r1.a 2
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3 DERIVED t1 ALL NULL NULL NULL NULL 8 Using where; Using temporary
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2 DERIVED t1 ALL NULL NULL NULL NULL 8 Using where; Using temporary
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# two references to t specified by a query
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# selecting all fields: both in main query
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with t as (select * from t1 where b >= 'c')
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select * from t as r1, t as r2 where r1.a=r2.a;
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a b a b
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1 ccc 1 ccc
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1 fff 1 ccc
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4 dd 4 dd
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4 ggg 4 dd
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3 eee 3 eee
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1 ccc 1 fff
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1 fff 1 fff
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4 dd 4 ggg
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4 ggg 4 ggg
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select * from (select * from t1 where b >= 'c') as r1,
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(select * from t1 where b >= 'c') as r2
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where r1.a=r2.a;
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a b a b
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1 ccc 1 ccc
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1 fff 1 ccc
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4 dd 4 dd
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4 ggg 4 dd
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3 eee 3 eee
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1 ccc 1 fff
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1 fff 1 fff
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4 dd 4 ggg
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4 ggg 4 ggg
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explain
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with t as (select * from t1 where b >= 'c')
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select * from t as r1, t as r2 where r1.a=r2.a;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 ALL NULL NULL NULL NULL 8 Using where
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1 SIMPLE t1 ALL NULL NULL NULL NULL 8 Using where; Using join buffer (flat, BNL join)
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explain
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select * from (select * from t1 where b >= 'c') as r1,
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(select * from t1 where b >= 'c') as r2
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where r1.a=r2.a;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 ALL NULL NULL NULL NULL 8 Using where
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1 SIMPLE t1 ALL NULL NULL NULL NULL 8 Using where; Using join buffer (flat, BNL join)
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# two references to t specifying explicitly column names
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with t(c) as (select a from t1 where b >= 'c')
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select * from t r1, t r2 where r1.c=r2.c;
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c c
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1 1
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1 1
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4 4
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4 4
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3 3
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1 1
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1 1
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4 4
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4 4
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# specification of t contains union
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with t as (select a from t1 where b >= 'f'
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union
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select c as a from t2 where c < 4)
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select * from t2,t where t2.c=t.a;
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c a
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2 2
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4 4
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3 3
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select * from t2,
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(select a from t1 where b >= 'f'
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union
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select c as a from t2 where c < 4) as t
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where t2.c=t.a;
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c a
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2 2
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4 4
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3 3
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explain
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with t as (select a from t1 where b >= 'f'
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union
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select c as a from t2 where c < 4)
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select * from t2,t where t2.c=t.a;
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t2 ALL NULL NULL NULL NULL 4 Using where
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1 PRIMARY <derived2> ref key0 key0 5 test.t2.c 2
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2 SUBQUERY t1 ALL NULL NULL NULL NULL 8 Using where
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3 UNION t2 ALL NULL NULL NULL NULL 4 Using where
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NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL
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explain
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select * from t2,
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(select a from t1 where b >= 'f'
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union
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select c as a from t2 where c < 4) as t
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where t2.c=t.a;
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t2 ALL NULL NULL NULL NULL 4 Using where
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1 PRIMARY <derived2> ref key0 key0 5 test.t2.c 2
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2 DERIVED t1 ALL NULL NULL NULL NULL 8 Using where
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3 UNION t2 ALL NULL NULL NULL NULL 4 Using where
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NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL
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# t is defined in the with clause of a subquery
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select t1.a,t1.b from t1,t2
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where t1.a>t2.c and
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t2.c in (with t as (select * from t1 where t1.a<5)
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select t2.c from t2,t where t2.c=t.a);
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a b
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4 aaaa
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7 bb
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7 bb
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4 dd
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7 bb
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7 bb
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4 ggg
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select t1.a,t1.b from t1,t2
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where t1.a>t2.c and
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t2.c in (select t2.c
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from t2,(select * from t1 where t1.a<5) as t
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where t2.c=t.a);
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a b
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4 aaaa
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7 bb
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7 bb
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4 dd
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7 bb
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7 bb
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4 ggg
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explain
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select t1.a,t1.b from t1,t2
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where t1.a>t2.c and
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t2.c in (with t as (select * from t1 where t1.a<5)
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select t2.c from t2,t where t2.c=t.a);
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t2 ALL NULL NULL NULL NULL 4
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1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
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1 PRIMARY t1 ALL NULL NULL NULL NULL 8 Using where; Using join buffer (flat, BNL join)
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2 MATERIALIZED t2 ALL NULL NULL NULL NULL 4 Using where
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2 MATERIALIZED t1 ALL NULL NULL NULL NULL 8 Using where; Using join buffer (flat, BNL join)
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explain
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select t1.a,t1.b from t1,t2
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where t1.a>t2.c and
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t2.c in (select t2.c
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from t2,(select * from t1 where t1.a<5) as t
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where t2.c=t.a);
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t2 ALL NULL NULL NULL NULL 4
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1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1
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1 PRIMARY t1 ALL NULL NULL NULL NULL 8 Using where; Using join buffer (flat, BNL join)
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2 MATERIALIZED t2 ALL NULL NULL NULL NULL 4 Using where
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2 MATERIALIZED t1 ALL NULL NULL NULL NULL 8 Using where; Using join buffer (flat, BNL join)
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# two different definitions of t: one in the with clause of the main query,
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# the other in the with clause of a subquery
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with t as (select c from t2 where c >= 4)
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select t1.a,t1.b from t1,t
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where t1.a=t.c and
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t.c in (with t as (select * from t1 where t1.a<5)
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select t2.c from t2,t where t2.c=t.a);
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a b
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4 aaaa
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4 dd
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4 ggg
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select t1.a,t1.b from t1, (select c from t2 where c >= 4) as t
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where t1.a=t.c and
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t.c in (select t2.c from t2, (select * from t1 where t1.a<5) as t
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where t2.c=t.a);
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a b
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4 aaaa
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4 dd
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4 ggg
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explain
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with t as (select c from t2 where c >= 4)
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select t1.a,t1.b from t1,t
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where t1.a=t.c and
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t.c in (with t as (select * from t1 where t1.a<5)
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select t2.c from t2,t where t2.c=t.a);
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id select_type table type possible_keys key key_len ref rows Extra
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1 PRIMARY t2 ALL NULL NULL NULL NULL 4 Using where
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1 PRIMARY <subquery3> eq_ref distinct_key distinct_key 4 func 1
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1 PRIMARY t1 ALL NULL NULL NULL NULL 8 Using where; Using join buffer (flat, BNL join)
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3 MATERIALIZED t2 ALL NULL NULL NULL NULL 4 Using where
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3 MATERIALIZED t1 ALL NULL NULL NULL NULL 8 Using where; Using join buffer (flat, BNL join)
|
|
explain
|
|
select t1.a,t1.b from t1, (select c from t2 where c >= 4) as t
|
|
where t1.a=t.c and
|
|
t.c in (select t2.c from t2, (select * from t1 where t1.a<5) as t
|
|
where t2.c=t.a);
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t2 ALL NULL NULL NULL NULL 4 Using where
|
|
1 PRIMARY <subquery3> eq_ref distinct_key distinct_key 4 func 1
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 8 Using where; Using join buffer (flat, BNL join)
|
|
3 MATERIALIZED t2 ALL NULL NULL NULL NULL 4 Using where
|
|
3 MATERIALIZED t1 ALL NULL NULL NULL NULL 8 Using where; Using join buffer (flat, BNL join)
|
|
# another with table tt is defined in the with clause of a subquery
|
|
# from the specification of t
|
|
with t as (select * from t1
|
|
where a>2 and
|
|
b in (with tt as (select * from t2 where t2.c<5)
|
|
select t1.b from t1,tt where t1.a=tt.c))
|
|
select t.a, count(*) from t1,t where t1.a=t.a group by t.a;
|
|
a count(*)
|
|
3 1
|
|
4 9
|
|
select t.a, count(*)
|
|
from t1,
|
|
(select * from t1
|
|
where a>2 and
|
|
b in (select t1.b
|
|
from t1,
|
|
(select * from t2 where t2.c<5) as tt
|
|
where t1.a=tt.c)) as t
|
|
where t1.a=t.a group by t.a;
|
|
a count(*)
|
|
3 1
|
|
4 9
|
|
explain
|
|
with t as (select * from t1
|
|
where a>2 and
|
|
b in (with tt as (select * from t2 where t2.c<5)
|
|
select t1.b from t1,tt where t1.a=tt.c))
|
|
select t.a, count(*) from t1,t where t1.a=t.a group by t.a;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 8 Using where; Using temporary; Using filesort
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 8 Using where; Using join buffer (flat, BNL join)
|
|
3 MATERIALIZED t2 ALL NULL NULL NULL NULL 4 Using where
|
|
3 MATERIALIZED t1 ALL NULL NULL NULL NULL 8 Using where; Using join buffer (flat, BNL join)
|
|
explain
|
|
select t.a, count(*)
|
|
from t1,
|
|
(select * from t1
|
|
where a>2 and
|
|
b in (select t1.b
|
|
from t1,
|
|
(select * from t2 where t2.c<5) as tt
|
|
where t1.a=tt.c)) as t
|
|
where t1.a=t.a group by t.a;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 8 Using where; Using temporary; Using filesort
|
|
1 PRIMARY t1 ALL NULL NULL NULL NULL 8 Using where; Using join buffer (flat, BNL join)
|
|
3 MATERIALIZED t2 ALL NULL NULL NULL NULL 4 Using where
|
|
3 MATERIALIZED t1 ALL NULL NULL NULL NULL 8 Using where; Using join buffer (flat, BNL join)
|
|
# with clause in the specification of a derived table
|
|
select *
|
|
from t1,
|
|
(with t as (select a from t1 where b >= 'c')
|
|
select * from t2,t where t2.c=t.a) as tt
|
|
where t1.b > 'f' and tt.a=t1.a;
|
|
a b c a
|
|
4 ggg 4 4
|
|
4 ggg 4 4
|
|
select *
|
|
from t1,
|
|
(select * from t2,
|
|
(select a from t1 where b >= 'c') as t
|
|
where t2.c=t.a) as tt
|
|
where t1.b > 'f' and tt.a=t1.a;
|
|
a b c a
|
|
4 ggg 4 4
|
|
4 ggg 4 4
|
|
explain
|
|
select *
|
|
from t1,
|
|
(with t as (select a from t1 where b >= 'c')
|
|
select * from t2,t where t2.c=t.a) as tt
|
|
where t1.b > 'f' and tt.a=t1.a;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 4
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 8 Using where; Using join buffer (flat, BNL join)
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 8 Using where; Using join buffer (incremental, BNL join)
|
|
explain
|
|
select *
|
|
from t1,
|
|
(select * from t2,
|
|
(select a from t1 where b >= 'c') as t
|
|
where t2.c=t.a) as tt
|
|
where t1.b > 'f' and tt.a=t1.a;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 SIMPLE t2 ALL NULL NULL NULL NULL 4
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 8 Using where; Using join buffer (flat, BNL join)
|
|
1 SIMPLE t1 ALL NULL NULL NULL NULL 8 Using where; Using join buffer (incremental, BNL join)
|
|
# with claused in the specification of a view
|
|
create view v1 as
|
|
with t as (select a from t1 where b >= 'c')
|
|
select * from t2,t where t2.c=t.a;
|
|
show create view v1;
|
|
View Create View character_set_client collation_connection
|
|
v1 CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `v1` AS WITH t AS (select `t1`.`a` AS `a` from `t1` where (`t1`.`b` >= 'c'))select `t2`.`c` AS `c`,`t`.`a` AS `a` from (`t2` join `t`) where (`t2`.`c` = `t`.`a`) latin1 latin1_swedish_ci
|
|
select * from v1;
|
|
c a
|
|
4 4
|
|
3 3
|
|
4 4
|
|
explain
|
|
select * from v1;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 32
|
|
2 DERIVED t2 ALL NULL NULL NULL NULL 4
|
|
2 DERIVED t1 ALL NULL NULL NULL NULL 8 Using where; Using join buffer (flat, BNL join)
|
|
# with claused in the specification of a materialized view
|
|
create view v2 as
|
|
with t as (select a, count(*) from t1 where b >= 'c' group by a)
|
|
select * from t2,t where t2.c=t.a;
|
|
show create view v2;
|
|
View Create View character_set_client collation_connection
|
|
v2 CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `v2` AS WITH t AS (select `t1`.`a` AS `a`,count(0) AS `count(*)` from `t1` where (`t1`.`b` >= 'c') group by `t1`.`a`)select `t2`.`c` AS `c`,`t`.`a` AS `a`,`t`.`count(*)` AS `count(*)` from (`t2` join `t`) where (`t2`.`c` = `t`.`a`) latin1 latin1_swedish_ci
|
|
select * from v2;
|
|
c a count(*)
|
|
4 4 2
|
|
3 3 1
|
|
explain
|
|
select * from v2;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 8
|
|
2 DERIVED t2 ALL NULL NULL NULL NULL 4 Using where
|
|
2 DERIVED <derived3> ref key0 key0 5 test.t2.c 2
|
|
3 SUBQUERY t1 ALL NULL NULL NULL NULL 8 Using where; Using temporary; Using filesort
|
|
# with clause in the specification of a view that whose definition
|
|
# table alias for a with table
|
|
create view v3 as
|
|
with t(c) as (select a from t1 where b >= 'c')
|
|
select * from t r1 where r1.c=4;
|
|
show create view v3;
|
|
View Create View character_set_client collation_connection
|
|
v3 CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `v3` AS WITH t AS (select `t1`.`a` AS `c` from `t1` where (`t1`.`b` >= 'c'))select `r1`.`c` AS `c` from `t` `r1` where (`r1`.`c` = 4) latin1 latin1_swedish_ci
|
|
select * from v3;
|
|
c
|
|
4
|
|
4
|
|
# with clause in the specification of a view that whose definition
|
|
# two table aliases for for the same with table
|
|
create view v4(c,d) as
|
|
with t(c) as (select a from t1 where b >= 'c')
|
|
select * from t r1, t r2 where r1.c=r2.c and r2.c=4;
|
|
show create view v4;
|
|
View Create View character_set_client collation_connection
|
|
v4 CREATE ALGORITHM=UNDEFINED DEFINER=`root`@`localhost` SQL SECURITY DEFINER VIEW `v4` AS WITH t AS (select `t1`.`a` AS `c` from `t1` where (`t1`.`b` >= 'c'))select `r1`.`c` AS `c`,`r2`.`c` AS `d` from (`t` `r1` join `t` `r2`) where ((`r1`.`c` = `r2`.`c`) and (`r2`.`c` = 4)) latin1 latin1_swedish_ci
|
|
select * from v4;
|
|
c d
|
|
4 4
|
|
4 4
|
|
4 4
|
|
4 4
|
|
explain
|
|
select * from v4;
|
|
id select_type table type possible_keys key key_len ref rows Extra
|
|
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 64
|
|
2 DERIVED t1 ALL NULL NULL NULL NULL 8 Using where
|
|
2 DERIVED t1 ALL NULL NULL NULL NULL 8 Using where; Using join buffer (flat, BNL join)
|
|
drop view v1,v2,v3,v4;
|
|
# currently any views containing with clause are not updatable
|
|
create view v1(a) as
|
|
with t as (select a from t1 where b >= 'c')
|
|
select t.a from t2,t where t2.c=t.a;
|
|
update v1 set a=0 where a > 4;
|
|
ERROR HY000: The target table v1 of the UPDATE is not updatable
|
|
drop view v1;
|
|
# prepare of a query containing a definition of a with table t
|
|
prepare stmt1 from "
|
|
with t as (select a from t1 where b >= 'c')
|
|
select * from t2,t where t2.c=t.a;
|
|
";
|
|
execute stmt1;
|
|
c a
|
|
4 4
|
|
3 3
|
|
4 4
|
|
execute stmt1;
|
|
c a
|
|
4 4
|
|
3 3
|
|
4 4
|
|
deallocate prepare stmt1;
|
|
# prepare of a query containing a definition of a materialized t
|
|
prepare stmt1 from "
|
|
with t as (select a, count(*) from t1 where b >= 'c' group by a)
|
|
select * from t2,t where t2.c=t.a;
|
|
";
|
|
execute stmt1;
|
|
c a count(*)
|
|
4 4 2
|
|
3 3 1
|
|
execute stmt1;
|
|
c a count(*)
|
|
4 4 2
|
|
3 3 1
|
|
deallocate prepare stmt1;
|
|
# prepare of a query containing two references to with table t
|
|
prepare stmt1 from "
|
|
with t as (select * from t1 where b >= 'c')
|
|
select * from t as r1, t as r2 where r1.a=r2.a;
|
|
";
|
|
execute stmt1;
|
|
a b a b
|
|
1 ccc 1 ccc
|
|
1 fff 1 ccc
|
|
4 dd 4 dd
|
|
4 ggg 4 dd
|
|
3 eee 3 eee
|
|
1 ccc 1 fff
|
|
1 fff 1 fff
|
|
4 dd 4 ggg
|
|
4 ggg 4 ggg
|
|
execute stmt1;
|
|
a b a b
|
|
1 ccc 1 ccc
|
|
1 fff 1 ccc
|
|
4 dd 4 dd
|
|
4 ggg 4 dd
|
|
3 eee 3 eee
|
|
1 ccc 1 fff
|
|
1 fff 1 fff
|
|
4 dd 4 ggg
|
|
4 ggg 4 ggg
|
|
deallocate prepare stmt1;
|
|
with t(f) as (select * from t1 where b >= 'c')
|
|
select * from t2,t where t2.c=t.f1;
|
|
ERROR HY000: WITH column list and SELECT field list have different column counts
|
|
with t(f1,f1) as (select * from t1 where b >= 'c')
|
|
select * from t2,t where t2.c=t.f1;
|
|
ERROR 42S21: Duplicate column name 'f1'
|
|
with t as (select * from t2 where c>3),
|
|
t as (select a from t1 where a>2)
|
|
select * from t,t1 where t1.a=t.c;
|
|
ERROR HY000: Duplicate query name in WITH clause
|
|
with t as (select a from s where a<5),
|
|
s as (select a from t1 where b>='d')
|
|
select * from t,s where t.a=s.a;
|
|
ERROR HY000: The definition of the table 't' refers to the table 's' defined later in a non-recursive WITH clause
|
|
with recursive
|
|
t as (select a from s where a<5),
|
|
s as (select a from t1 where b>='d')
|
|
select * from t,s where t.a=s.a;
|
|
a a
|
|
4 4
|
|
4 4
|
|
3 3
|
|
1 1
|
|
4 4
|
|
4 4
|
|
with recursive t as (select * from s where a>2),
|
|
s as (select a from t1,r where t1.a>r.c),
|
|
r as (select c from t,t2 where t.a=t2.c)
|
|
select * from r where r.c<7;
|
|
ERROR HY000: Recursive queries in WITH clause are not supported yet
|
|
with t as (select * from s where a>2),
|
|
s as (select a from t1,r where t1.a>r.c),
|
|
r as (select c from t,t2 where t.a=t2.c)
|
|
select * from r where r.c<7;
|
|
ERROR HY000: Recursive queries in WITH clause are not supported yet
|
|
with t as (select * from t1
|
|
where a in (select c from s where b<='ccc') and b>'b'),
|
|
s as (select * from t1,t2
|
|
where t1.a=t2.c and t1.c in (select a from t where a<5))
|
|
select * from s where s.b>'aaa';
|
|
ERROR HY000: Recursive queries in WITH clause are not supported yet
|
|
with t as (select * from t1 where b>'aaa' and b <='d')
|
|
select t.b from t,t2
|
|
where t.a=t2.c and
|
|
t2.c in (with s as (select t1.a from s,t1 where t1.a=s.a and t1.b<'c')
|
|
select * from s);
|
|
ERROR HY000: Recursive queries in WITH clause are not supported yet
|
|
#erroneous definition of unreferenced with table t
|
|
with t as (select count(*) from t1 where d>='f' group by a)
|
|
select t1.b from t2,t1 where t1.a = t2.c;
|
|
ERROR 42S22: Unknown column 'd' in 'where clause'
|
|
with t as (select count(*) from t1 where b>='f' group by a)
|
|
select t1.b from t2,t1 where t1.a = t2.c;
|
|
b
|
|
aaaa
|
|
dd
|
|
eee
|
|
ggg
|
|
#erroneous definition of s referring to unreferenced t
|
|
with t(d) as (select count(*) from t1 where b<='ccc' group by b),
|
|
s as (select * from t1 where a in (select t2.d from t2,t where t2.c=t.d))
|
|
select t1.b from t1,t2 where t1.a=t2.c;
|
|
ERROR 42S22: Unknown column 't2.d' in 'field list'
|
|
with t(d) as (select count(*) from t1 where b<='ccc' group by b),
|
|
s as (select * from t1 where a in (select t2.c from t2,t where t2.c=t.c))
|
|
select t1.b from t1,t2 where t1.a=t2.c;
|
|
ERROR 42S22: Unknown column 't.c' in 'where clause'
|
|
with t(d) as (select count(*) from t1 where b<='ccc' group by b),
|
|
s as (select * from t1 where a in (select t2.c from t2,t where t2.c=t.d))
|
|
select t1.b from t1,t2 where t1.a=t2.c;
|
|
b
|
|
aaaa
|
|
dd
|
|
eee
|
|
ggg
|
|
#erroneous definition of unreferenced with table t
|
|
with t(f) as (select * from t1 where b >= 'c')
|
|
select t1.b from t2,t1 where t1.a = t2.c;
|
|
ERROR HY000: WITH column list and SELECT field list have different column counts
|
|
#erroneous definition of unreferenced with table t
|
|
with t(f1,f1) as (select * from t1 where b >= 'c')
|
|
select t1.b from t2,t1 where t1.a = t2.c;
|
|
ERROR 42S21: Duplicate column name 'f1'
|
|
drop table t1,t2;
|
|
#
|
|
# Bug mdev-9937: View used in the specification of with table
|
|
# refers to the base table with the same name
|
|
#
|
|
create table t1 (a int);
|
|
insert into t1 values (20), (30), (10);
|
|
create view v1 as select * from t1 where a > 10;
|
|
with t1 as (select * from v1) select * from t1;
|
|
a
|
|
20
|
|
30
|
|
drop view v1;
|
|
drop table t1;
|