drop table if exists t1,t2,t3;
drop database if exists test_$1;
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);
Warnings:
Warning 1263 Data truncated, NULL supplied to NOT NULL column 'b' at row 2
drop table t1;
create table t1 (a int not null auto_increment,primary key (a)) engine=heap;
create table t2 engine=heap select * from t1;
ERROR 42S02: Table 'test.t1' doesn't exist
create table t2 select auto+1 from t1;
drop table if exists t1,t2;
Note 1051 Unknown table 't1'
Note 1051 Unknown table 't2'
create table t1 (b char(0) not null, index(b));
ERROR 42000: The used storage engine can't index column 'b'
create table t1 (a int not null,b text) engine=heap;
ERROR 42000: The used table type doesn't support BLOB/TEXT columns
create table t1 (ordid int(8) not null auto_increment, ord varchar(50) not null, primary key (ord,ordid)) engine=heap;
ERROR 42000: Incorrect table definition; There can only be one auto column and it must be defined as a key
create table not_existing_database.test (a int);
Got one of the listed errors
create table `a/a` (a int);
ERROR 42000: Incorrect table name 'a/a'
create table `aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa` (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa int);
ERROR 42000: Incorrect table name 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa'
create table a (`aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa` int);
ERROR 42000: 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);
Note 1008 Can't drop database 'test_$1'; database doesn't exist
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 `` (a int);
ERROR 42000: Incorrect table name ''
drop table if exists ``;
create table t1 (`` int);
ERROR 42000: Incorrect column name ''
create table t1 (i int, index `` (i));
ERROR 42000: Incorrect index name ''
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) YES NULL
describe t2;
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;
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
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;
d date YES NULL
t time YES NULL
dt datetime YES NULL
create table t1 (a tinyint);
create table t2 (a int) select * from t1;
a tinyint(4) YES NULL
a int(11) YES NULL
drop table if exists t2;
create table t2 (a int, a float) select * from t1;
ERROR 42S21: Duplicate column name 'a'
create table t2 (a int) select a as b, a+1 as b from t1;
ERROR 42S21: Duplicate column name 'b'
create table t2 (b int) select a as b, a+1 as b from t1;
CREATE TABLE t1 (a int not null);
INSERT INTO t1 values (1),(2),(1);
CREATE TABLE t2 (primary key(a)) SELECT * FROM t1;
ERROR 23000: Duplicate entry '1' for key 1
SELECT * from t2;
ERROR 42S02: Table 'test.t2' doesn't exist
DROP TABLE t1;
DROP TABLE IF EXISTS 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`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1
create table t1 select if(1,'1','0'), month("2002-08-02");
create table t1 select if('2002'='2002','Y','N');
if('2002'='2002','Y','N')
Y
SET SESSION storage_engine="heap";
SELECT @@storage_engine;
@@storage_engine
HEAP
`a` int(11) NOT NULL default '0'
) ENGINE=HEAP DEFAULT CHARSET=latin1
SET SESSION storage_engine="gemini";
ERROR 42000: Unknown table engine 'gemini'
SET SESSION storage_engine=default;
create table t1 ( k1 varchar(2), k2 int, primary key(k1,k2));
insert into t1 values ("a", 1), ("b", 2);
insert into t1 values ("c", NULL);
ERROR 23000: Column 'k2' cannot be null
insert into t1 values (NULL, 3);
ERROR 23000: Column 'k1' cannot be null
insert into t1 values (NULL, NULL);
create table t1 select x'4132';
create table t1 select 1,2,3;
create table if not exists t1 select 1,2;
create table if not exists t1 select 1,2,3,4;
ERROR 21S01: Column count doesn't match value count at row 1
create table if not exists t1 select 1;
0 1 2
0 0 1
create table t1 (a int not null, b int, primary key (a));
insert into t1 values (1,1);
create table if not exists t1 select 2;
a b
1 1
0 2
create table if not exists t1 select 3 as 'a',4 as 'b';
create table if not exists t1 select 3 as 'a',3 as 'b';
ERROR 23000: Duplicate entry '3' for key 1
3 4
create table t1 (a int, key(a));
create table t2 (b int, foreign key(b) references t1(a), key(b));
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;
t3 CREATE TABLE `t3` (
`id` int(11) NOT NULL default '0',
`name` char(20) default NULL
select * from t3;
id name
create table if not exists t3 like t1;
Warning 1050 Table 't3' already exists
select @@warning_count;
@@warning_count
1
create temporary table t3 like t2;
t3 CREATE TEMPORARY TABLE `t3` (
`id` int(11) NOT NULL default '0'
id
drop table t3;
drop table t2, t3;
create table test_$1.t3 like t1;
create temporary table t3 like test_$1.t3;
create table t2 like t3;
show create table t2;
t2 CREATE TABLE `t2` (
select * from t2;
create table t3 like test_$1.t3;
ERROR 42S01: Table 't3' already exists
create table non_existing_database.t1 like t1;
create table t3 like non_existing_table;
ERROR 42S02: Unknown table 'non_existing_table'
create temporary table t3 like t1;
create table t3 like `a/a`;
drop table t1, t2, t3;
create table t1(a int,b int,c int unsigned,d date,e char,f datetime,g time,h blob);
insert into t1(a)values(1);
insert into t1(a,b,c,d,e,f,g,h)
values(2,-2,2,'1825-12-14','a','2003-1-1 3:2:1','4:3:2','binary data');
a b c d e f g h
1 NULL NULL NULL NULL NULL NULL NULL
2 -2 2 1825-12-14 a 2003-01-01 03:02:01 04:03:02 binary data
select a,
ifnull(b,cast(-7 as signed)) as b,
ifnull(c,cast(7 as unsigned)) as c,
ifnull(d,cast('2000-01-01' as date)) as d,
ifnull(e,cast('b' as char)) as e,
ifnull(f,cast('2000-01-01' as datetime)) as f,
ifnull(g,cast('5:4:3' as time)) as g,
ifnull(h,cast('yet another binary data' as binary)) as h,
addtime(cast('1:0:0' as time),cast('1:0:0' as time)) as dd
from t1;
a b c d e f g h dd
1 -7 7 2000-01-01 b 2000-01-01 00:00:00 05:04:03 yet another binary data 02:00:00
2 -2 2 1825-12-14 a 2003-01-01 03:02:01 04:03:02 binary data 02:00:00
create table t2
select
a,
explain t2;
b bigint(11) 0
c bigint(10) 0
e char(1)
f datetime YES NULL
g time YES NULL
h longblob
dd time YES NULL
drop table t1, t2;
create table t1 (a tinyint, b smallint, c mediumint, d int, e bigint, f float(3,2), g double(4,3), h decimal(5,4), i year, j date, k timestamp, l datetime, m enum('a','b'), n set('a','b'), o char(10));
create table t2 select ifnull(a,a), ifnull(b,b), ifnull(c,c), ifnull(d,d), ifnull(e,e), ifnull(f,f), ifnull(g,g), ifnull(h,h), ifnull(i,i), ifnull(j,j), ifnull(k,k), ifnull(l,l), ifnull(m,m), ifnull(n,n), ifnull(o,o) from t1;
`ifnull(a,a)` tinyint(4) default NULL,
`ifnull(b,b)` smallint(6) default NULL,
`ifnull(c,c)` mediumint(9) default NULL,
`ifnull(d,d)` int(11) default NULL,
`ifnull(e,e)` bigint(20) default NULL,
`ifnull(f,f)` float(3,2) default NULL,
`ifnull(g,g)` double(4,3) default NULL,
`ifnull(h,h)` decimal(5,4) default NULL,
`ifnull(i,i)` year(4) default NULL,
`ifnull(j,j)` date default NULL,
`ifnull(k,k)` datetime NOT NULL default '0000-00-00 00:00:00',
`ifnull(l,l)` datetime default NULL,
`ifnull(m,m)` char(1) default NULL,
`ifnull(n,n)` char(3) default NULL,
`ifnull(o,o)` char(10) default NULL
create table t1(str varchar(10) default 'def',strnull varchar(10),intg int default '10',rel double default '3.14');
insert into t1 values ('','',0,0.0);
str varchar(10) YES def
strnull varchar(10) YES NULL
intg int(11) YES 10
rel double YES 3.14
create table t2 select default(str) as str, default(strnull) as strnull, default(intg) as intg, default(rel) as rel from t1;
str varchar(10) YES NULL
intg int(11) YES NULL
rel double YES NULL
create table t1(name varchar(10), age smallint default -1);
name varchar(10) YES NULL
age smallint(6) YES -1
create table t2(name varchar(10), age smallint default - 1);
use test_$1;
select database();
database()
test_$1
use test;
create table t1 (a int, index `primary` (a));
ERROR 42000: Incorrect index name 'primary'
create table t1 (a int, index `PRIMARY` (a));
ERROR 42000: Incorrect index name 'PRIMARY'
create table t1 (`primary` int, index(`primary`));
`primary` int(11) default NULL,
KEY `primary_2` (`primary`)
create table t2 (`PRIMARY` int, index(`PRIMARY`));
`PRIMARY` int(11) default NULL,
KEY `PRIMARY_2` (`PRIMARY`)
create table t3 (a int);
alter table t3 add index `primary` (a);
alter table t3 add index `PRIMARY` (a);
create table t4 (`primary` int);
alter table t4 add index(`primary`);
show create table t4;
t4 CREATE TABLE `t4` (
create table t5 (`PRIMARY` int);
alter table t5 add index(`PRIMARY`);
show create table t5;
t5 CREATE TABLE `t5` (
drop table t1, t2, t3, t4, t5;
