sql server跟my sql 命令(语句)的区别,sql server与mysql的比
sql server和my sql 命令(语句)的区别,sql server与mysql的比较 sql与mysql的比较 1、连接字符串 sql :Initial Catalog(database)=x; --数据库名称 Data Source(source)=x; --服务器 Persist Security Info=True; --集成sql server身份验证 Integrated Sec
sql server和my sql 命令(语句)的区别,sql server与mysql的比较sql与mysql的比较
1、连接字符串
sql :Initial Catalog(database)=x; --数据库名称
Data Source(source)=x; --服务器
Persist Security Info=True; --集成sql server身份验证
Integrated Security=True --集成windows身份验证
User ID(uid)=x; --用户名
Password(pwb)=x; --密码
mysql:Database=x; --数据库名称
Data Source=x; --服务器
User Id(uid)=bizhi; --用户名
Password=x; --密码
pooling=false; --
CharSet=utf8; --编码
port=x --端口
2、连接对象
sql :SqlConnection
mysql:MySqlConnection
3、命令:
sql :SqlCommand
mysql:MySqlCommand
4、参数
sql :SqlParameter
mysql:MySqlParameter
5、填充:
sql :SqlDataAdapter
mysql:MySqlDataAdapter
6、查询所有库
sql :select * from [master]..[SysDatabases];
mysql:SHOW DATABASES;
7、显示指定库的所有表
sql :select * from [_DatatBaseName]..[SysObjects] where [type]='U';
mysql:USE _DatatBaseName; SHOW TABLES;
8、显示指定库的指定表的所有字段
sql :select top 0 * from [_DatatBaseName]..[_TableName];
select * from [syscolumns] where [ID]=OBJECT_ID('BPM..OrderFollow');
mysql:USE _DatatBaseName; SHOW COLUMNS FROM _TableName;
USE _DatatBaseName; DESCRIBE _TableName;
9、查询当前时间
sql :select getdate();
mysql:SELECT NOW();
10、备份数据库
sql :backup _DatatBaseName to disk='d:\123.bak';
mysql:
11、创建数据库
sql :use master
go
--删除数据库
if exists(select * from sysdatabases where name='kl')
drop database [HBDataBase]; --删除
go
--创建数据库
create database [kl]
on --主文件
(
name='kl',
size=3mb,
filename='D:\kl.mdf',
maxsize=100mb,
filegrowth=1mb
)
log on --日志文件
(
name='kl_Log',
filename='D:\kl.ldf',
size=1mb,
maxsize=5mb,
filegrowth=5%
)
go
mysql:CREATE DATABASE _DatatBaseName;
12、分页
sql :top N
ROW_NUMBER() over(order by xx desc )
mysql:limit
13、添加的自增列
sql :insert into xx(bb) output inserted.vv vlaues('');
select @@identity;
mysql:SELECT @@session.identity;

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