diff options
Diffstat (limited to 'mysql-test/r/derived.result')
| -rw-r--r-- | mysql-test/r/derived.result | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/mysql-test/r/derived.result b/mysql-test/r/derived.result index 170c393524b..a89494645fa 100644 --- a/mysql-test/r/derived.result +++ b/mysql-test/r/derived.result @@ -59,7 +59,7 @@ explain select * from t1 as x1, (select * from t1) as x2; id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY x1 ALL NULL NULL NULL NULL 4 1 PRIMARY <derived2> ALL NULL NULL NULL NULL 4 -2 DERIVED x1 ALL NULL NULL NULL NULL 4 +2 DERIVED t1 ALL NULL NULL NULL NULL 4 drop table if exists t2,t3; select * from (select 1) as a; 1 @@ -141,7 +141,7 @@ a t explain select count(*) from t1 as tt1, (select * from t1) as tt2; id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY NULL NULL NULL NULL NULL NULL NULL Select tables optimized away -2 DERIVED tt1 ALL NULL NULL NULL NULL 10000 +2 DERIVED t1 index NULL a 4 NULL 10000 Using index drop table t1; SELECT * FROM (SELECT (SELECT * FROM (SELECT 1 as a) as a )) as b; (SELECT * FROM (SELECT 1 as a) as a ) @@ -189,13 +189,13 @@ id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY m2 ALL NULL NULL NULL NULL 9 1 PRIMARY <derived2> ALL NULL NULL NULL NULL 6 Using where 2 DERIVED mp ALL NULL NULL NULL NULL 9 Using temporary; Using filesort -2 DERIVED m2 index NULL PRIMARY 3 NULL 9 Using index +2 DERIVED m1 index NULL PRIMARY 3 NULL 9 Using index explain SELECT STRAIGHT_JOIN d.pla_id, m2.test FROM t1 m2 INNER JOIN (SELECT mp.pla_id, MIN(m1.matintnum) AS matintnum FROM t2 mp INNER JOIN t1 m1 ON mp.mat_id=m1.mat_id GROUP BY mp.pla_id) d ON d.matintnum=m2.matintnum; id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY m2 ALL NULL NULL NULL NULL 9 1 PRIMARY <derived2> ALL NULL NULL NULL NULL 6 Using where 2 DERIVED mp ALL NULL NULL NULL NULL 9 Using temporary; Using filesort -2 DERIVED m2 index NULL PRIMARY 3 NULL 9 Using index +2 DERIVED m1 index NULL PRIMARY 3 NULL 9 Using index drop table t1,t2; SELECT a.x FROM (SELECT 1 AS x) AS a HAVING a.x = 1; x @@ -229,8 +229,8 @@ explain select count(*) from t1 INNER JOIN (SELECT A.E1, A.E2, A.E3 FROM t1 AS A id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2 1 PRIMARY t1 eq_ref PRIMARY PRIMARY 4 THEMAX.E2 1 Using where -2 DERIVED t1 ALL NULL NULL NULL NULL 2 Using where -3 DEPENDENT SUBQUERY B ALL NULL NULL NULL NULL 2 Using where +2 DERIVED A index NULL PRIMARY 4 NULL 2 Using where; Using index +3 DEPENDENT SUBQUERY B index NULL PRIMARY 4 NULL 2 Using where; Using index drop table t1; create table t1 (a int); insert into t1 values (1),(2); @@ -298,3 +298,14 @@ INSERT INTO t3 VALUES (1000,0.00),(1001,0.25),(1002,0.50),(1003,0.75),(1008,1.00 select 497, TMP.ID, NULL from (select 497 as ID, MAX(t3.DATA) as DATA from t1 join t2 on (t1.ObjectID = t2.ID) join t3 on (t1.ObjectID = t3.ID) group by t2.ParID order by DATA DESC) as TMP; 497 ID NULL drop table t1, t2, t3; +CREATE TABLE t1 (name char(1) default NULL, val int(5) default NULL); +INSERT INTO t1 VALUES ('a',1), ('a',2), ('a',2), ('a',2), ('a',3), ('a',6), ('a',7), ('a',11), ('a',11), ('a',12), ('a',13), ('a',13), ('a',20), ('b',2), ('b',3), ('b',4), ('b',5); +SELECT s.name, AVG(s.val) AS median FROM (SELECT x.name, x.val FROM t1 x, t1 y WHERE x.name=y.name GROUP BY x.name, x.val HAVING SUM(y.val <= x.val) >= COUNT(*)/2 AND SUM(y.val >= x.val) >= COUNT(*)/2) AS s GROUP BY s.name; +name median +a 7.0000 +b 3.5000 +explain SELECT s.name, AVG(s.val) AS median FROM (SELECT x.name, x.val FROM t1 x, t1 y WHERE x.name=y.name GROUP BY x.name, x.val HAVING SUM(y.val <= x.val) >= COUNT(*)/2 AND SUM(y.val >= x.val) >= COUNT(*)/2) AS s GROUP BY s.name; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY <derived2> ALL NULL NULL NULL NULL 3 Using temporary; Using filesort +2 DERIVED x ALL NULL NULL NULL NULL 17 Using temporary; Using filesort +2 DERIVED y ALL NULL NULL NULL NULL 17 Using where |