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所以我在MS SQL Server 2008中编写了一个存储过程.这是一个非常长的查询,我必须动态编写它,所以我创建一个名为的变量@Query并使其成为类型NVARCHAR(MAX).现在,我被告知在现代版本的SQL Server中,NVARCHAR(MAX)可以容纳一大堆数据,比最初的4000个字符最多.但是,@Query当我尝试将其打印出来时,仍会被截断为4000个字符.

DECLARE @Query NVARCHAR(max);
SET @Query = 'SELECT...' -- some of the query gets set here
SET @Query = @Query + '...' -- more query gets added on, etc.

-- later on...
PRINT LEN(@Query) -- Prints out 4273, which is correct as far as I can tell
PRINT @Query      -- Truncates value to 4000 characters
EXEC sp_executesql @Query -- totally crashes due to malformed (truncated) query …