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merge

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bell@sanja.is.com.ua
2004-08-23 15:50:59 +03:00
parent 52731bec19 74d7a092b2
commit 3ca433e332
11 changed files with 222 additions and 118 deletions
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24
mysql-test/r/func_gconcat.result
View File

@ -285,15 +285,21 @@ insert into t2 values (1, 5), (2, 4), (3, 3), (3,3);
select group_concat(c) from t1;
group_concat(c)
2,3,4,5
select group_concat(c order by (select c from t2 where t2.a=t1.a limit 1)) as grp from t1;
grp
5,4,3,2
select group_concat(c order by (select mid(group_concat(c order by a),1,5) from t2 where t2.a=t1.a)) as grp from t1;
grp
5,4,3,2
select group_concat(c order by (select mid(group_concat(c order by a),1,5) from t2 where t2.a=t1.a) desc) as grp from t1;
grp
2,4,3,5
select t1.a, group_concat(c order by (select c from t2 where t2.a=t1.a limit 1)) as grp from t1 group by 1;
a grp
1 2
2 4,3
3 5
select t1.a, group_concat(c order by (select mid(group_concat(c order by a),1,5) from t2 where t2.a=t1.a)) as grp from t1 group by 1;
a grp
1 2
2 4,3
3 5
select t1.a, group_concat(c order by (select mid(group_concat(c order by a),1,5) from t2 where t2.a=t1.a) desc) as grp from t1 group by 1;
a grp
1 2
2 4,3
3 5
select a,c,(select group_concat(c order by a) from t2 where a=t1.a) as grp from t1 order by grp;
a c grp
3 5 3,3

43
mysql-test/r/subselect.result
View File

@ -1912,3 +1912,46 @@ a
1
2
drop table t1,t2;
CREATE TABLE `t1` ( `aid` int(11) NOT NULL default '0', `bid` int(11) NOT NULL default '0', PRIMARY KEY (`aid`,`bid`));
CREATE TABLE `t2` ( `aid` int(11) NOT NULL default '0', `bid` int(11) NOT NULL default '0', PRIMARY KEY (`aid`,`bid`));
insert into t1 values (1,1),(1,2),(2,1),(2,2);
insert into t2 values (1,2),(2,2);
select * from t1 where t1.aid not in (select aid from t2 where bid=t1.bid);
aid bid
1 1
2 1
alter table t2 drop primary key;
alter table t2 add key KEY1 (aid, bid);
select * from t1 where t1.aid not in (select aid from t2 where bid=t1.bid);
aid bid
1 1
2 1
alter table t2 drop key KEY1;
alter table t2 add primary key (bid, aid);
select * from t1 where t1.aid not in (select aid from t2 where bid=t1.bid);
aid bid
1 1
2 1
drop table t1,t2;
CREATE TABLE t1 (howmanyvalues bigint, avalue int);
INSERT INTO t1 VALUES (1, 1),(2, 1),(2, 2),(3, 1),(3, 2),(3, 3),(4, 1),(4, 2),(4, 3),(4, 4);
SELECT howmanyvalues, count(*) from t1 group by howmanyvalues;
howmanyvalues count(*)
1 1
2 2
3 3
4 4
SELECT a.howmanyvalues, (SELECT count(*) from t1 b where b.howmanyvalues = a.howmanyvalues) as mycount from t1 a group by a.howmanyvalues;
howmanyvalues mycount
1 1
2 2
3 3
4 4
CREATE INDEX t1_howmanyvalues_idx ON t1 (howmanyvalues);
SELECT a.howmanyvalues, (SELECT count(*) from t1 b where b.howmanyvalues+1 = a.howmanyvalues+1) as mycount from t1 a group by a.howmanyvalues;
howmanyvalues mycount
1 1
2 2
3 3
4 4
drop table t1;