create.result

来自「视频监控网络部分的协议ddns,的模块的实现代码,请大家大胆指正.」· RESULT 代码 · 共 1,266 行 · 第 1/5 页

drop table if exists t1,t2,t3,t4,t5;
drop database if exists mysqltest;
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:
Note	1050	Table 't1' already exists
insert into t1 values (""),(null);
Warnings:
Warning	1048	Column 'b' cannot be null
select * from t1;
b


drop table t1;
create table t1 (a int not null auto_increment,primary key (a)) engine=heap;
drop table t1;
create table t2 engine=heap select * from t1;
ERROR 42S02: Table 'test.t1' doesn't exist
create table t2 select auto+1 from t1;
ERROR 42S02: Table 'test.t1' doesn't exist
drop table if exists t1,t2;
Warnings:
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
drop table if exists t1;
Warnings:
Note	1051	Unknown table 't1'
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 be only one auto column and it must be defined as a key
create table not_existing_database.test (a int);
ERROR 42000: Unknown database 'not_existing_database'
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 t1 (a datetime default now());
ERROR 42000: Invalid default value for 'a'
create table t1 (a datetime on update now());
ERROR HY000: Invalid ON UPDATE clause for 'a' column
create table t1 (a int default 100 auto_increment);
ERROR 42000: Invalid default value for 'a'
create table t1 (a tinyint default 1000);
ERROR 42000: Invalid default value for 'a'
create table t1 (a varchar(5) default 'abcdef');
ERROR 42000: Invalid default value for 'a'
create table t1 (a varchar(5) default 'abcde');
insert into t1 values();
select * from t1;
a
abcde
alter table t1 alter column a set default 'abcdef';
ERROR 42000: Invalid default value for 'a'
drop table t1;
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 mysqltest;
Warnings:
Note	1008	Can't drop database 'mysqltest'; database doesn't exist
create database mysqltest;
create table mysqltest.$test1 (a$1 int, $b int, c$ int);
insert into mysqltest.$test1 values (1,2,3);
select a$1, $b, c$ from mysqltest.$test1;
a$1	$b	c$
1	2	3
create table mysqltest.test2$ (a int);
drop table mysqltest.test2$;
drop database mysqltest;
create table `` (a int);
ERROR 42000: Incorrect table name ''
drop table if exists ``;
ERROR 42000: Incorrect table name ''
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;
Field	Type	Null	Key	Default	Extra
x	varchar(50)	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	NO		0000-00-00 00:00:00	
b	time	NO		00:00:00	
c	date	NO		0000-00-00	
d	int(3)	NO		0	
e	decimal(3,1)	NO		0.0	
f	bigint(19)	NO		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	YES		NULL	
t	time	YES		NULL	
dt	datetime	YES		NULL	
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;
ERROR 42S21: Duplicate column name 'a'
drop table if exists t2;
Warnings:
Note	1051	Unknown table 't2'
create table t2 (a int) select a as b, a+1 as b from t1;
ERROR 42S21: Duplicate column name 'b'
drop table if exists t2;
Warnings:
Note	1051	Unknown table 't2'
create table t2 (b int) select a as b, a+1 as b from t1;
ERROR 42S21: Duplicate column name 'b'
drop table if exists t1,t2;
Warnings:
Note	1051	Unknown table 't2'
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;
Warnings:
Note	1051	Unknown table '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,
  `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
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;
SET SESSION storage_engine="heap";
SELECT @@storage_engine;
@@storage_engine
MEMORY
CREATE TABLE t1 (a int not null);
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` int(11) NOT NULL
) ENGINE=MEMORY DEFAULT CHARSET=latin1
drop table t1;
SET SESSION storage_engine="gemini";
ERROR 42000: Unknown table engine 'gemini'
SELECT @@storage_engine;
@@storage_engine
MEMORY
CREATE TABLE t1 (a int not null);
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` int(11) NOT NULL
) ENGINE=MEMORY DEFAULT CHARSET=latin1
SET SESSION storage_engine=default;
drop table t1;
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);
ERROR 23000: Column 'k1' cannot be null
drop table t1;
create table t1 select x'4132';
drop table t1;
create table t1 select 1,2,3;
create table if not exists t1 select 1,2;
Warnings:
Note	1050	Table 't1' already exists
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;
Warnings: