SQL语句作为参数

Question

是否可以在SQL中执行类似的操作？

DECLARE @t Nvarchar(50)

SET @t = 'SELECT * FROM KIN_PHON'

execute @t  --??

Answer 1

使用exec：

DECLARE @t Nvarchar(50)
SET @t = 'SELECT * FROM KIN_PHON'
exec (@t)

或使用参数sp_executesql：

declare @sql nvarchar(max)
set @sql = 'select * from YourTable where ID = @ID'
execute sp_executesql @sql, N'@ID int', @ID = 42;