Question

CREATE PROCEDURE sp_product_listing
(
     @product varchar(30),
     @month   datetime,
     @year    datetime
)
AS
  SELECT
     'product_name' = products.name,
     products.unit_price,
     products.quantity_in_stock,
     'supplier_name' = suppliers.name
  FROM
     suppliers
  INNER JOIN
     products ON suppliers.supplier_id = products.supplier_id    
  INNER JOIN
     order_details ON products.product_id = order_details.product_id
  INNER JOIN
     orders ON order_details.order_id = orders.order_id
  WHERE
     products.name = @product 
     AND MONTH ('orders.order_date') = @month 
     AND YEAR ('orders.order_date') = @year;
GO

当有些人尝试使用错误的输入执行过程时，而不是在异常块中获取此错误消息

    Msg 8114, Level 16, State 5, Procedure sp_product_listing, Line 0
    Error converting data type varchar to datetime.

Answer 1

从我的评论中：不可能在同一个sp内验证SP的输入参数！

您需要对输入的婴儿车进行验证。   所以听到这是一个使用错误处理方法执行此操作的简单示例。

GO
    CREATE PROCEDURE ERROR_TEST
    (
        @month DATETIME,
        @year  DATETIME
    )
    AS
    BEGIN
        SELECT
            MONTH (@month) [month],
            YEAR  (@year)  [year]
    END
GO

现在使用相同的输入参数创建一个类似的sp。

GO
    CREATE PROCEDURE ERROR_TEST_1
    (
        @month_1 VARCHAR(50),
        @year_1  VARCHAR(50)
    )
    AS
    BEGIN TRY
        EXEC ERROR_TEST @month_1,@year_1
    END TRY
    BEGIN CATCH
    IF ERROR_NUMBER() = 8114 --> update asper your error OR set > 0
        BEGIN
            PRINT 'INVALID MONTH OR YEAR'
        END
    END CATCH;
GO

示例执行：

EXEC ERROR_TEST_1＆＃39; 1＆＃39;，＆＃39; 2 ＆＃39; ---＆gt;错误结果

EXEC ERROR_TEST_1＆＃39; 2015-11-15 ＆＃39;，＆＃39; 2015-11-15 ＆＃39; < /强> ---＆GT;正确的结果

如何使用异常块处理程序错误的输入参数错误

1 个答案: