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Merge 10.3 into 10.4

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Marko Mäkelä
2019-05-05 15:03:48 +03:00
parent b132b8895e e8dd18a474
commit d3dcec5d65
125 changed files with 1950 additions and 1736 deletions
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54
mysql-test/main/derived.result
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@@ -1195,3 +1195,57 @@ drop table t1,t2,t3;
#
# End of 10.2 tests
#
#
# MDEV-9959: A serious MariaDB server performance bug
#
create table t1(a int);
insert into t1 values (1),(2),(3),(4),(5),(6);
create table t2(a int, b int,c int);
insert into t2(a,b,c) values (1,1,2),(2,2,3),(3,1,4),(4,2,2),(5,1,1),(6,2,5);
create table t3(a int, b int);
insert into t3(a,b) values (1,1),(2,2),(2,1),(1,2),(5,1),(9,2);
table "<derived2>" should have type=ref and rows=1
one select in derived table
with distinct
analyze select * from t1 , ((select distinct t2.a from t2 order by c))q where t1.a=q.a;
id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 6.00 100.00 100.00 Using where
1 PRIMARY <derived2> ref key0 key0 5 test.t1.a 1 1.00 100.00 100.00
2 DERIVED t2 ALL NULL NULL NULL NULL 6 6.00 100.00 100.00 Using temporary; Using filesort
analyze select * from t1 , ((select distinct t2.a, t2.b from t2 order by c))q where t1.a=q.a;
id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 6.00 100.00 100.00 Using where
1 PRIMARY <derived2> ref key0 key0 5 test.t1.a 2 1.00 100.00 100.00
2 DERIVED t2 ALL NULL NULL NULL NULL 6 6.00 100.00 100.00 Using temporary; Using filesort
# multiple selects in derived table
# NO UNION ALL
analyze select * from t1 , ( (select t2.a from t2 order by c) union (select t2.a from t2 order by c))q where t1.a=q.a;
id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 6.00 100.00 100.00 Using where
1 PRIMARY <derived2> ref key0 key0 5 test.t1.a 1 1.00 100.00 100.00
2 DERIVED t2 ALL NULL NULL NULL NULL 6 6.00 100.00 100.00
3 UNION t2 ALL NULL NULL NULL NULL 6 6.00 100.00 100.00
NULL UNION RESULT <union2,3> ALL NULL NULL NULL NULL NULL 6.00 NULL NULL
select * from t1 , ( (select t2.a from t2 order by c) union (select t2.a from t2 order by c))q where t1.a=q.a;
a a
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# UNION ALL and EXCEPT
analyze select * from t1 , ( (select t2.a from t2 order by c) union all (select t2.a from t2 order by c) except(select t3.a from t3 order by b))q where t1.a=q.a;
id select_type table type possible_keys key key_len ref rows r_rows filtered r_filtered Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 6 6.00 100.00 100.00 Using where
1 PRIMARY <derived2> ref key0 key0 5 test.t1.a 1 0.50 100.00 100.00
2 DERIVED t2 ALL NULL NULL NULL NULL 6 6.00 100.00 100.00
3 UNION t2 ALL NULL NULL NULL NULL 6 6.00 100.00 100.00
4 EXCEPT t3 ALL NULL NULL NULL NULL 6 6.00 100.00 100.00
NULL UNIT RESULT <unit2,3,4> ALL NULL NULL NULL NULL NULL 3.00 NULL NULL
select * from t1 , ( (select t2.a from t2 order by c) union all (select t2.a from t2 order by c) except(select t3.a from t3 order by b))q where t1.a=q.a;
a a
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drop table t1,t2,t3;