我有一个存储过程,我正在努力,我试图让它返回存储在我创建的过程中的表变量的结果。出于某种原因,当我执行该程序时,它不返回任何内容。但是,如果我拿一块用来填充表变量并取出它的工作程序代码...存储过程不返回表变量的结果?
的代码如下:
测试代码
DECLARE @RC int
DECLARE @constraint_names nvarchar(max)
DECLARE @column_names nvarchar(max)
DECLARE @table_name nvarchar(max)
DECLARE @table_schema nvarchar(max)
DECLARE @database_name nvarchar(max)
DECLARE @debug int
DECLARE @ExistFlag int;
-- TODO: Set parameter values here.
SET @column_names = 'M2016_Object_ID int, Name varchar(50), a int, b'
SET @table_name = 'tblM2016_Objects';
SET @debug = 0;
SET @ExistFlag = 1;
DECLARE @existing_cols TABLE (Value nvarchar(max));
INSERT INTO @existing_cols EXEC spM2016_CheckColumnExistence_tblM2016
@column_names, @table_name, @database_name, @table_schema, 1, 0;
select * from @existing_cols
结果
Value
M2016_Object_ID int
Name varchar(50)
这是预期的结果,因为我测试查看tblM2016_Objects表中是否存在M2016_Object_ID和Name列。
但是,当我在存储过程中执行此操作时,它不返回任何内容。
存储过程
ALTER PROCEDURE spM2016_ChangePKConstraints_tblM2016
-- Add the parameters for the stored procedure here
@constraint_names nvarchar(max) =
N'PK_tblM2016_Fields_M2016_Field_ID',
@column_names nvarchar(max) = N'M2016_Field_ID',
@table_name nvarchar(max) = N'tblM2016_Fields',
@table_schema nvarchar(max) = N'dbo',
@database_name nvarchar(max) = N'MET',
@debug int = 0
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT ON;
-- Insert statements for procedure here
DECLARE @tbl_name nvarchar(max) = N'tblM2016_Fields',
@col_names nvarchar(max) = N'M2016_Field_ID',
@tbl_schema nvarchar(max) = N'dbo',
@db_name nvarchar(max) = N'MET',
@tbl_full_name nvarchar(max),
@tbl_short_name nvarchar(max),
@sql nvarchar(max),
@params nvarchar(max)
-- Insert statements for procedure here
SET @col_names = ISNULL(NULLIF(@column_names, ''), @col_names);
SET @tbl_name = quotename(ISNULL(NULLIF(@table_name, ''), @tbl_name));
SET @tbl_schema = quotename(ISNULL(NULLIF(@table_schema, ''), @tbl_schema));
SET @db_name = quotename(ISNULL(NULLIF(@database_name, ''), @db_name));
SET @tbl_full_name = @db_name + '.' + @tbl_schema + '.' + @tbl_name;
SET @tbl_short_name = @tbl_schema + '.' + @tbl_name;
DECLARE @existing_cols TABLE (Value nvarchar(max));
DECLARE @nonexisting_cols TABLE (Value nvarchar(max));
--INSERT INTO @split_columns
-- SELECT *
-- FROM
-- fnM2016_Split_String_Inline(@col_names, ',');
--IF (@debug = 1)
-- SELECT * FROM @split_columns;
IF NOT EXISTS (SELECT * FROM sys.objects WHERE type = 'PK' AND parent_object_id = OBJECT_ID(@tbl_full_name))
BEGIN
-- No PK constraint, check col_names to see which exist and don't exist
INSERT INTO @existing_cols EXEC spM2016_CheckColumnExistence_tblM2016 @col_names, @tbl_name, @db_name, @tbl_schema, 1, 0;
INSERT INTO @nonexisting_cols EXEC spM2016_CheckColumnExistence_tblM2016 @col_names, @tbl_name, @db_name, @tbl_schema, 0, 0;
SELECT * FROM @existing_cols;
SELECT * FROM @nonexisting_cols;
END
--ELSE
--BEGIN
--END
END
结果 这些是在测试用相同的参数值执行上述步骤之后的结果:
EXECUTE @RC = [dbo].[spM2016_ChangePKConstraints_tblM2016]
@constraint_names
,@column_names
,@table_name
,@table_schema
,@database_name
,@debug;
结果
Value
在你的程序中,你有表的名称为'@table_name为nvarchar(MAX)= N'tblM2016_Fields'',但它应该是' tblM2016_Objects' –
您可以显示您传递给'spM2016_ChangePKConstraints_tblM2016'过程的实际值吗? –
测试代码块中使用的参数与传递给spM2016_ChangePKConstraints_tblM2016的参数相同。 – Jake