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drop table if exists t1,t2,t3,t4;
create table T1 (id int primary key, Word varchar(40) not null, Index(Word));
create table t4 (id int primary key, Word varchar(40) not null);
INSERT INTO T1 VALUES (1, 'a'), (2, 'b'), (3, 'c');
INSERT INTO T4 VALUES(1,'match');
SELECT * FROM t1;
id Word
1 a
2 b
3 c
SELECT T1.id from T1 LIMIT 1;
id
1
SELECT T2.id from t1 as T2 LIMIT 1;
id
1
SELECT * from t1 left join t4 on (test.t1.id= TEST.t4.id) where TEST.t1.id >= test.t4.id;
id Word id Word
1 a 1 match
SELECT T2.id from t1 as t2 LIMIT 1;
id
1
RENAME TABLE T1 TO T2;
ALTER TABLE T2 ADD new_col int not null;
ALTER TABLE T2 RENAME T3;
show tables like 't_';
Tables_in_test (t_)
t3
t4
drop table t3,t4;
create table t1 (a int);
select count(*) from T1;
count(*)
0
select count(*) from t1;
count(*)
0
select count(T1.a) from t1;
count(T1.a)
0
select count(bags.a) from t1 as Bags;
count(bags.a)
0
drop table t1;
create table t1 (a int);
create table t2 (a int);
delete p1.*,P2.* from t1 as p1, t2 as p2 where p1.a=P2.a;
delete P1.*,p2.* from t1 as P1, t2 as P2 where P1.a=p2.a;
update t1 as p1, t2 as p2 SET p1.a=1,P2.a=1 where p1.a=P2.a;
update t1 as P1, t2 as P2 SET P1.a=1,p2.a=1 where P1.a=p2.a;
drop table t1,t2;
create table t1 (a int);
create table t2 (a int);
select * from t1 c, t2 C;
ERROR 42000: Not unique table/alias: 'C'
select C.a, c.a from t1 c, t2 C;
ERROR 42000: Not unique table/alias: 'C'
drop table t1, t2;
show tables;
Tables_in_test
create table t1 (a int);
select TEST.t1.* from TEST.t1;
a
alter table t1 rename to T1;
select TEST.t1.* from TEST.t1;
a
drop table t1;
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