Question

所以，我在下面的一个存储过程中实现了这个。并且如果他们按指定的点数较少它可以正常工作，但如果他们有正常点（不少于）并且他们是例如61级并且总共482点那么脚本将尝试在总点数上写入NULL并且我想要它，所以它不会这样做，如果他们没有点，只是什么都不做。（就像脚本从未被执行过一样），因为如果它们有足够的分数，那么我们就不必添加它们了。

GO
/****** Object:  StoredProcedure [dbo].[REPAIR_USER_STAT_POINTS]    Script Date: 05/30/2013 03:57:55 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO



ALTER PROCEDURE [dbo].[REPAIR_USER_STAT_POINTS]

@strUserID varchar(21)

AS

DECLARE @Level int, @Point int, @Class int,@NewPoint int, @Strong int, @Sta int, @Dex int, @Intel int, @Cha int, @Total int



SELECT @Level = Level, @Class = Class, @Point = Points, @Strong = Strong, @Sta = Sta, @Dex = Dex, @Intel = Intel, @Cha = Cha FROM USERDATA WHERE strUserId = @strUserID

SET @Total = SUM(@Strong + @Sta + @Dex + @Intel + @Cha + @Point)


IF @Level = 61 AND @Total < 482

BEGIN

SET @NewPoint = 10

END

IF @Level = 62 AND @Total < 487

BEGIN

SET @NewPoint = 15

END

IF @Level = 63 AND @Total < 492

BEGIN

SET @NewPoint = 20

END

IF @Level = 64 AND @Total < 497

BEGIN

SET @NewPoint = 25

END

IF @Level = 65 AND @Total < 502

BEGIN

SET @NewPoint = 30

END

IF @Level = 66 AND @Total < 507

BEGIN

SET @NewPoint = 35

END

IF @Level = 67 AND @Total < 512

BEGIN

SET @NewPoint = 40

END

IF @Level = 68 AND @Total < 517

BEGIN

SET @NewPoint = 45

END

IF @Level = 69 AND @Total < 522

BEGIN

SET @NewPoint = 50

END

IF @Level = 70 AND @Total < 527

BEGIN

SET @NewPoint = 55

END

IF @Level = 71 AND @Total < 532

BEGIN

SET @NewPoint = 60

END

IF @Level = 72 AND @Total < 537

BEGIN

SET @NewPoint = 65

END

IF @Level = 73 AND @Total < 542

BEGIN

SET @NewPoint = 70

END

IF @Level = 74 AND @Total < 547

BEGIN

SET @NewPoint = 75

END

IF @Level = 75 AND @Total < 552

BEGIN

SET @NewPoint = 80

END

IF @Level = 76 AND @Total < 557

BEGIN

SET @NewPoint = 85

END

IF @Level = 77 AND @Total < 562

BEGIN

SET @NewPoint = 90

END

IF @Level = 78 AND @Total < 567

BEGIN

SET @NewPoint = 95

END

IF @Level = 79 AND @Total < 572

BEGIN

SET @NewPoint = 100

END

IF @Level = 80 AND @Total < 577

BEGIN

SET @NewPoint = 105

END

IF @Level = 81 AND @Total < 582

BEGIN

SET @NewPoint = 110

END

IF @Level = 82 AND @Total < 587

BEGIN

SET @NewPoint = 115

END

IF @Level = 83 AND @Total < 592

BEGIN

SET @NewPoint = 120

END



IF @Class = 201 OR @Class = 205 OR @Class = 206 OR @Class = 101 OR @Class = 105 OR @Class = 106

BEGIN

UPDATE USERDATA Set Strong = '247',Dex = '60',Sta = '65',Intel = '50',Cha = '50',Points = @NewPoint WHERE strUserId = @strUserId

END

ELSE IF @Class = 202 OR @Class = 207 OR @Class = 208 OR @Class = 102 OR @Class = 107 OR @Class = 108

BEGIN

UPDATE USERDATA Set Strong = '60',Dex = '252',Sta = '60',Intel = '50',Cha = '50',Points = @NewPoint WHERE strUserId = @strUserId

END

ELSE IF @Class = 203 OR @Class = 209 OR @Class = 210 OR @Class = 103 OR @Class = 109 OR @Class = 110

BEGIN

UPDATE USERDATA Set Strong = '50',Dex = '70',Sta = '50',Intel = '70',Cha = '232',Points = @NewPoint WHERE strUserId = @strUserId

END

ELSE IF @Class = 204 OR @Class = 211 OR @Class = 212 OR @Class = 104 OR @Class = 111 OR @Class = 112

BEGIN

UPDATE USERDATA Set Strong = '65',Dex = '60',Sta = '65',Intel = '232',Cha = '50',Points = @NewPoint WHERE strUserId = @strUserId

END

Answer 1

切换到带有ELSE子句的CASE语句。无论如何，它更简洁。

GO
/****** Object:  StoredProcedure [dbo].[REPAIR_USER_STAT_POINTS]    Script Date: 05/30/2013 03:57:55 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO


ALTER PROCEDURE [dbo].[REPAIR_USER_STAT_POINTS]
@strUserID varchar(21)
AS
DECLARE @Level int, @Point int, @Class int,@NewPoint int, @Strong int, @Sta int, @Dex int, @Intel int, @Cha int, @Total int

SELECT @Level = Level, @Class = Class, @Point = Points, @Strong = Strong, @Sta = Sta, @Dex = Dex, @Intel = Intel, @Cha = Cha 
FROM USERDATA WHERE strUserId = @strUserID

SET @Total = SUM(@Strong + @Sta + @Dex + @Intel + @Cha + @Point)


SET @NewPoint = 
    CASE WHEN @Level = 61 AND @Total < 482 THEN 10
        WHEN @Level = 62 AND @Total < 487 THEN 15
        WHEN @Level = 63 AND @Total < 492 THEN 20
        WHEN @Level = 64 AND @Total < 497 THEN 25
        WHEN @Level = 65 AND @Total < 502 THEN 30
        WHEN @Level = 66 AND @Total < 507 THEN 35
        WHEN @Level = 67 AND @Total < 512 THEN 40
        WHEN @Level = 68 AND @Total < 517 THEN 45
        WHEN @Level = 69 AND @Total < 522 THEN 50
        WHEN @Level = 70 AND @Total < 527 THEN 55
        WHEN @Level = 71 AND @Total < 532 THEN 60
        WHEN @Level = 72 AND @Total < 537 THEN 65
        WHEN @Level = 73 AND @Total < 542 THEN 70
        WHEN @Level = 74 AND @Total < 547 THEN 75
        WHEN @Level = 75 AND @Total < 552 THEN 80
        WHEN @Level = 76 AND @Total < 557 THEN 85
        WHEN @Level = 77 AND @Total < 562 THEN 90
        WHEN @Level = 78 AND @Total < 567 THEN 95
        WHEN @Level = 79 AND @Total < 572 THEN 100
        WHEN @Level = 80 AND @Total < 577 THEN 105
        WHEN @Level = 81 AND @Total < 582 THEN 110
        WHEN @Level = 82 AND @Total < 587 THEN 115
        WHEN @Level = 83 AND @Total < 592 THEN 120
        ELSE @Point
    END


IF @Point <> @NewPoint
BEGIN
    IF @Class = 201 OR @Class = 205 OR @Class = 206 OR @Class = 101 OR @Class = 105 OR @Class = 106
    BEGIN
        UPDATE USERDATA Set Strong = '247',Dex = '60',Sta = '65',Intel = '50',Cha = '50',Points = @NewPoint 
        WHERE strUserId = @strUserId
    END
    ELSE IF @Class = 202 OR @Class = 207 OR @Class = 208 OR @Class = 102 OR @Class = 107 OR @Class = 108
    BEGIN
        UPDATE USERDATA Set Strong = '60',Dex = '252',Sta = '60',Intel = '50',Cha = '50',Points = @NewPoint 
        WHERE strUserId = @strUserId
    END
    ELSE IF @Class = 203 OR @Class = 209 OR @Class = 210 OR @Class = 103 OR @Class = 109 OR @Class = 110
    BEGIN
        UPDATE USERDATA Set Strong = '50',Dex = '70',Sta = '50',Intel = '70',Cha = '232',Points = @NewPoint 
        WHERE strUserId = @strUserId
    END
    ELSE IF @Class = 204 OR @Class = 211 OR @Class = 212 OR @Class = 104 OR @Class = 111 OR @Class = 112
    BEGIN
        UPDATE USERDATA Set Strong = '65',Dex = '60',Sta = '65',Intel = '232',Cha = '50',Points = @NewPoint 
        WHERE strUserId = @strUserId
    END
END

Answer 2

我仍然对你的问题感到困惑，但这应该像我理解的那样奏效。不要使用所有IF语句，而应考虑移入单个CASE语句，将值默认为0.然后添加一个检查，如果值不是0，则执行某些操作。

DECLARE @Level int
DECLARE @Total int
DECLARE @NewPoint int

SET @Level = 61
SET @Total = 100

SELECT 
  @NewPoint = CASE
                WHEN @Level = 61 AND @Total < 482 THEN 10
                WHEN @Level = 62 AND @Total < 487 THEN 15
                WHEN @Level = 63 AND @Total < 492 THEN 20
                WHEN @Level = 64 AND @Total < 497 THEN 25
                WHEN @Level = 65 AND @Total < 502 THEN 30
                ELSE 0
              END

IF @NewPoint <> 0 
BEGIN
  SELECT 'DO SOMETHING'
END

SQL Fiddle Demo

Answer 3

如果我理解正确，你可以修改ELSE。

更改自：

ELSE @NewPoint = @NewPoint

更改为：

ELSE return

这将中止脚本，不会发生任何更新。

SQL存储过程阻止写入null

3 个答案: