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drop table if exists t1,t2;
create table t1 (b char(0));
insert into t1 values (""),(null);
select * from t1;
b
NULL
drop table if exists t1;
create table t1 (b char(0) not null);
create table if not exists t1 (b char(0) not null);
insert into t1 values (""),(null);
select * from t1;
b
drop table if exists t1;
create table t2 type=heap select * from t1;
Table 'test.t1' doesn't exist
create table t2 select auto+1 from t1;
Table 'test.t1' doesn't exist
drop table if exists t1,t2;
create table t1 (b char(0) not null, index(b));
The used table handler can't index column 'b'
create table t1 (a int not null auto_increment,primary key (a)) type=heap;
create table t1 (a int not null,b text) type=heap;
The used table type doesn't support BLOB/TEXT columns
create table t1 (a int ,primary key(a)) type=heap;
All parts of a PRIMARY KEY must be NOT NULL; If you need NULL in a key, use UNIQUE instead
drop table if exists t1;
create table t1 (ordid int(8) not null auto_increment, ord varchar(50) not null, primary key (ord,ordid)) type=heap;
Incorrect table definition; There can only be one auto column and it must be defined as a key
create table t1 (ordid int(8), primary key (ordid));
All parts of a PRIMARY KEY must be NOT NULL; If you need NULL in a key, use UNIQUE instead
create table not_existing_database.test (a int);
Got one of the listed errors
create table `a/a` (a int);
Incorrect table name 'a/a'
create table `aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa` (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa int);
Incorrect table name 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa'
create table a (`aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa` int);
Identifier name 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa' is too long
create table 1ea10 (1a20 int,1e int);
insert into 1ea10 values(1,1);
select 1ea10.1a20,1e+ 1e+10 from 1ea10;
1a20 1e+ 1e+10
1 10000000001
drop table 1ea10;
create table t1 (t1.index int);
drop table t1;
drop database if exists test_$1;
create database test_$1;
create table test_$1.$test1 (a$1 int, $b int, c$ int);
insert into test_$1.$test1 values (1,2,3);
select a$1, $b, c$ from test_$1.$test1;
a$1 $b c$
1 2 3
create table test_$1.test2$ (a int);
drop table test_$1.test2$;
drop database test_$1;
create table t1 (a int auto_increment not null primary key, B CHAR(20));
insert into t1 (b) values ("hello"),("my"),("world");
create table t2 (key (b)) select * from t1;
explain select * from t2 where b="world";
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t2 ref B B 21 const 1 Using where
select * from t2 where b="world";
a B
3 world
drop table t1,t2;
create table t1(x varchar(50) );
create table t2 select x from t1 where 1=2;
describe t1;
Field Type Null Key Default Extra
x varchar(50) character set latin1 YES NULL
describe t2;
Field Type Null Key Default Extra
x char(50) character set latin1 YES NULL
drop table t2;
create table t2 select now() as a , curtime() as b, curdate() as c , 1+1 as d , 1.0 + 1 as e , 33333333333333333 + 3 as f;
describe t2;
Field Type Null Key Default Extra
a datetime 0000-00-00 00:00:00
b time 00:00:00
c date 0000-00-00
d bigint(17) 0
e double(18,1) 0.0
f bigint(17) 0
drop table t2;
create table t2 select CAST("2001-12-29" AS DATE) as d, CAST("20:45:11" AS TIME) as t, CAST("2001-12-29 20:45:11" AS DATETIME) as dt;
describe t2;
Field Type Null Key Default Extra
d date 0000-00-00
t time 00:00:00
dt datetime 0000-00-00 00:00:00
drop table t1,t2;
create table t1 (a tinyint);
create table t2 (a int) select * from t1;
describe t1;
Field Type Null Key Default Extra
a tinyint(4) YES NULL
describe t2;
Field Type Null Key Default Extra
a int(11) YES NULL
drop table if exists t2;
create table t2 (a int, a float) select * from t1;
Duplicate column name 'a'
drop table if exists t2;
create table t2 (a int) select a as b, a+1 as b from t1;
Duplicate column name 'b'
drop table if exists t2;
create table t2 (b int) select a as b, a+1 as b from t1;
Duplicate column name 'b'
drop table if exists t1,t2;
create table t1 (a int not null, b int, primary key(a), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b), key (b));
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` int(11) NOT NULL default '0',
`b` int(11) default NULL,
PRIMARY KEY (`a`),
KEY `b` (`b`),
KEY `b_2` (`b`),
KEY `b_3` (`b`),
KEY `b_4` (`b`),
KEY `b_5` (`b`),
KEY `b_6` (`b`),
KEY `b_7` (`b`),
KEY `b_8` (`b`),
KEY `b_9` (`b`),
KEY `b_10` (`b`),
KEY `b_11` (`b`),
KEY `b_12` (`b`),
KEY `b_13` (`b`),
KEY `b_14` (`b`),
KEY `b_15` (`b`),
KEY `b_16` (`b`),
KEY `b_17` (`b`),
KEY `b_18` (`b`),
KEY `b_19` (`b`),
KEY `b_20` (`b`),
KEY `b_21` (`b`),
KEY `b_22` (`b`),
KEY `b_23` (`b`),
KEY `b_24` (`b`),
KEY `b_25` (`b`),
KEY `b_26` (`b`),
KEY `b_27` (`b`),
KEY `b_28` (`b`),
KEY `b_29` (`b`),
KEY `b_30` (`b`),
KEY `b_31` (`b`)
) TYPE=MyISAM CHARSET=latin1
drop table t1;
create table t1 select if(1,'1','0'), month("2002-08-02");
drop table t1;
create table t1 select if('2002'='2002','Y','N');
select * from t1;
if('2002'='2002','Y','N')
Y
drop table if exists t1;
create table t1 (a int, key(a));
create table t2 (b int, foreign key(b) references t1(a), key(b));
drop table if exists t1,t2;
drop table if exists t1, t2, t3;
create table t1(id int not null, name char(20));
insert into t1 values(10,'mysql'),(20,'monty- the creator');
create table t2(id int not null);
insert into t2 values(10),(20);
create table t3 like t1;
show create table t3;
Table Create Table
t3 CREATE TABLE `t3` (
`id` int(11) NOT NULL default '0',
`name` char(20) character set latin1 default NULL
) TYPE=MyISAM CHARSET=latin1
select * from t3;
id name
create table if not exists t3 like t1;
Warnings:
Warning 1050 Table 't3' already exists
select @@warning_count;
@@warning_count
1
create temporary table t3 like t2;
show create table t3;
Table Create Table
t3 CREATE TEMPORARY TABLE `t3` (
`id` int(11) NOT NULL default '0'
) TYPE=MyISAM CHARSET=latin1
select * from t3;
id
drop table t3;
show create table t3;
Table Create Table
t3 CREATE TABLE `t3` (
`id` int(11) NOT NULL default '0',
`name` char(20) character set latin1 default NULL
) TYPE=MyISAM CHARSET=latin1
select * from t3;
id name
drop table t2, t3;
drop database if exists test_$1;
create database test_$1;
create table test_$1.t3 like t1;
create temporary table t3 like test_$1.t3;
show create table t3;
Table Create Table
t3 CREATE TEMPORARY TABLE `t3` (
`id` int(11) NOT NULL default '0',
`name` char(20) character set latin1 default NULL
) TYPE=MyISAM CHARSET=latin1
create table t2 like t3;
show create table t2;
Table Create Table
t2 CREATE TABLE `t2` (
`id` int(11) NOT NULL default '0',
`name` char(20) character set latin1 default NULL
) TYPE=MyISAM CHARSET=latin1
select * from t2;
id name
create table t3 like t1;
create table t3 like test_$1.t3;
Table 't3' already exists
create table non_existing_database.t1 like t1;
Got one of the listed errors
create table t3 like non_existing_table;
Unknown table 'non_existing_table'
create temporary table t3 like t1;
Table 't3' already exists
create table t3 like `a/a`;
Incorrect table name 'a/a'
drop table t1, t2, t3;
drop table t3;
drop database test_$1;
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