sql - 无法使用表输出参数创建存储过程

Question

我有这个代码:

IF  EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[GetProfitDeals]') AND type in (N'P', N'PC'))
DROP PROCEDURE [dbo].[GetProfitDealsVar2]
GO

IF EXISTS(SELECT 1 FROM sys.types WHERE name = 'TableOrderType' AND is_table_type = 1 AND SCHEMA_ID('dbo') = schema_id)
DROP TYPE [dbo].[TableOrderType];

CREATE TYPE TableOrderType AS TABLE(
    Order_ID int NOT NULL,
    Order_AccNumber int NOT NULL,
    Order_OpenDate datetime NULL,
    Order_CloseDate datetime NULL,
    Order_Profit float NULL
);
GO

CREATE PROCEDURE [dbo].[GetProfitDeals](@OpenDate datetime = NULL, @CloseDate datetime  = NULL, @MinProfit float = NULL, @out TableOrderType OUTPUT READONLY)
AS
    INSERT INTO @out
    SELECT * FROM [Orders]
    WHEN [Orders].[OpenDate] >= @OpenDate
GO

但我收到错误“有关构造“READONLY”的语法不正确”。我该如何解决这个问题，因为我真的需要一个 OUTPUT 表参数。

Answer 1

表参数是只读的。您无法选择它们。 Use Table-Valued Parameters :

Table-valued parameters must be passed as input READONLY parameters to Transact-SQL routines. You cannot perform DML operations such as UPDATE, DELETE, or INSERT on a table-valued parameter in the body of a routine.

和Table-Valued Parameters :

You cannot return data in a table-valued parameter. Table-valued parameters are input-only; the OUTPUT keyword is not supported.

阅读Arrays and Lists in SQL Server对替代方案进行全面讨论。