--drop procedure zcstest;create procedure zcstest( @tableName varchar(max), @dataCount int output ) as declare @paramName varchar(max) set @tableName = LTRIM(@tableName) if @tableName is null or @tableName = ‘‘ begin set @paramName = ‘@tableName‘ goto ArgumentNullException end declare @finalSql varchar(max) declare @getCountSql nvarchar(max) set @getCountSql = N‘select @dataCount=count(*) from ‘ + @tableName exec sp_executesql @getCountSql, N‘@dataCount int output‘, @dataCount output set @finalSql = ‘select * from ‘ + @tableName exec(@finalSql) print(@finalSql) return 0 ArgumentNullException: raiserror(‘参数%s的值不能为空‘, 10, 1, @tableName) return -60001 declare @dataCount int exec [LCMDM9999].[zcstest] ‘MDMWLDW‘,@dataCount output print(@dataCount)