Question

我正在尝试从select语句输出一个值，但不确定如何完成此操作。我打电话给程序通过示例值＆＃39; mypackage＆＃39; （package_id）和117（total_cost）。我需要它将total_cost参数输出为INT。

ALTER PROCEDURE [aren1002].[ArenDataGetPackageWithRoomCost]
(
    @room_type as int=NULL,
    @package_id as varchar(30)=NULL,
    @total_cost as INT OUTPUT,
    @sql as varchar(400)
)
AS
SET NOCOUNT ON

BEGIN
SELECT @total_cost AS
    string @sql = 'SELECT ' + @package_id + ' from aren1002.HOLIDAY_ROOM where room_standard_id = ' + @room_type
    exec @sql
END

Answer 1

对于 SQL SERVER

ALTER PROCEDURE [aren1002].[ArenDataGetPackageWithRoomCost]
(
    @room_type AS INT=NULL,
    @package_id AS VARCHAR(30)=NULL,
    @total_cost AS INT OUTPUT,
    @sql AS VARCHAR(400)
)
AS
SET NOCOUNT ON

BEGIN
    DECLARE @sql NVARCHAR(MAX)
    SET @sql = 'SELECT @total_cost = ' + @package_id + ' from aren1002.HOLIDAY_ROOM where room_standard_id = ' + @room_type
    sp_executesql @sql, '@total_cost AS INT OUTPUT', @total_cost AS INT OUTPUT
END

Answer 2

ALTER PROCEDURE [aren1002].[ArenDataGetPackageWithRoomCost]
(
    @room_type as int=NULL,
    @package_id as varchar(30)=NULL,
    @total_cost as INT OUTPUT,
    @sql as varchar(400)
)
AS
SET NOCOUNT ON

BEGIN
    DECLARE @sql NVARCHAR(MAX)
    select @sql = 'SELECT @total_cost=' + @package_id + ' from aren1002.HOLIDAY_ROOM 
      where room_standard_id = ' + @room_type
    exec sp_executesql @sql,N'@total_cost INT Output',@total_cost output
END

SQL - 获取输出参数值

2 个答案: