如何使用目标数据库名称中的变量进行插入语句? [英] How to use variable in target database name for insert statement?

问题描述

我想声明一个服务器名称，并在插入语句中使用此名称.到目前为止，我得到的只是一条错误消息.

I want to declare a server name and use this name in an insert statement. So far all i got is an error message.

declare @machine nvarchar(6);
declare @bar nvarchar(3);
set @machine = 'Name00';
set @bar = 'foo'

insert into @machine.dbname.dbo.table (column1, column2)
select (column1, column2)
from table
where column1 = @bar

这给了我:

Msg 102, Level 15, State 1, Line 6
Incorrect syntax near '.'.

推荐答案

我以前遇到过此问题，而我发现的唯一解决方法是动态sql

I've had this problem before and the only work around I found is dynamic sql

declare @machine nvarchar(6)
declare @bar nvarchar(3)
declare @sql varchar(2000)
set @machine = 'Name00'
set @bar = 'foo'


Set @sql ='insert into ' + @machine + '.dbname.dbo.table (column1, column2)
select (column1, column2)
from table
where column1 = ''' + @bar + ''''

--print (@sql)
exec (@sql)

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