Home Database Mysql Tutorial mssql数据库中的表、字段sql语句

mssql数据库中的表、字段sql语句

Jun 07, 2016 pm 06:01 PM
sql statement Field

在数据库中创建的每个对象(例如约束、默认值、日志、规则以及存储过程)都对应一行。

mssql update from 语法
代码如下:
update a set a.columnname=b.columnname from a,b where b.id=1

1.系统表sysobjects

在数据库中创建的每个对象(例如约束、默认值、日志、规则以及存储过程)都对应一行。

参考

2.syscolumns

为每个表和视图中的每列返回一行,并为数据库中的存储过程的每个参数返回一行。

参考

删除某数据库内的表

declare dlist cursor for
select name from sysobjects where xtype='U'
open dlist
declare @n varchar(4000)
fetch next from dlist into @n
while @@fetch_status=0
begin
declare @es varchar(4000)
set @es='DROP table
exec( @es)
fetch next from dlist into @n
end
close dlist
DEALLOCATE dlist

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