Question

我有以下将更新，插入或删除的存储过程。从来没有输入DELETE部分的问题。如果我只使用删除部分工作正常，但添加了一个＆＃39; IF＆＃39;在它之前阻塞并且永远不会触发代码。这是SQL Server 2005.存储过程代码：

ALTER PROCEDURE phyadmSetNumbers
    @OfficeID int,
    @Number varchar(50),
    @NumberTypeID int
AS
BEGIN
    DECLARE @NumberID int

    EXEC phyadmGetNumberID @OfficeID, @NumberTypeID, @NumberID output
    IF ((LEN(@Number) > 0) AND (@@RowCount = 1)) 
    BEGIN           
        UPDATE Number
        SET Number = @Number, LastUpdate = GetDate()
        WHERE ID = @NumberID        
    END
    ELSE IF ((LEN(@Number) > 0) AND (@@RowCount = 0))  
    BEGIN
        EXEC phyadmInsNumber @OfficeID, @Number, @NumberTypeID  
    END
    ELSE IF (((LEN(@Number) = 0) OR @Number IS NULL) AND (@@RowCount = 1))
    BEGIN       
        SELECT 'In delete if statement'
        SELECT 'NumberID is ' + @NumberID
        DELETE FROM Number
        WHERE ID = @NumberID
        select * from Number where ID = @NumberID

        DELETE FROM OfficeNumber
        WHERE OfficeID = @OfficeID AND NumberID = @NumberID 

        select * from OfficeNumber WHERE OfficeID = @OfficeID AND NumberID = @NumberID  
    END
END

如果我评论前2＆＃39; IF＆＃39;声明只运行最后，它工作正常。如下所示：如果它是唯一的＆＃39; IF＆＃39;块。

IF (((LEN(@Number) = 0) OR @Number IS NULL) AND (@@RowCount = 1))
        BEGIN       
            SELECT 'In delete if statement'
            SELECT 'NumberID is ' + @NumberID
            DELETE FROM Number
            WHERE ID = @NumberID
            select * from Number where ID = @NumberID

            DELETE FROM OfficeNumber
            WHERE OfficeID = @OfficeID AND NumberID = @NumberID 

            select * from OfficeNumber WHERE OfficeID = @OfficeID AND NumberID = @NumberID

如果......如果在SQL中使用？上面的代码有什么问题？感谢。

更新接受建议......这是我的新代码：

DECLARE @NumberID int

EXEC phyadmGetNumberID @OfficeID, @NumberTypeID, @NumberID output
IF (@@RowCount = 1)
BEGIN
    IF (LEN(@Number) > 0)
    BEGIN
        UPDATE Number
        SET Number = @Number, LastUpdate = GetDate()
        WHERE ID = @NumberID        
    END
    ELSE
    BEGIN
        DELETE FROM Number
        WHERE ID = @NumberID

        DELETE FROM OfficeNumber
        WHERE OfficeID = @OfficeID AND NumberID = @NumberID 
    END
END
ELSE
BEGIN
    EXEC phyadmInsNumber @OfficeID, @Number, @NumberTypeID
END

Answer 1

If (1=0)
BEGIN
    SELECT [col] FROM [table]
END
ELSE 
BEGIN
    IF (1=1)
    BEGIN
        SELECT * FROM [table]
    END
END

您希望将它们分开并嵌套IF ... ELSE语句。

Answer 2

这里的问题是在落入其他地方之前满足条件。正如Ejesalva所说，你需要将它们分开，所以我认为最后的陈述应该是其他的：

ALTER PROCEDURE phyadmSetNumbers
@OfficeID int,
@Number varchar(50),
@NumberTypeID int
AS
BEGIN
DECLARE @NumberID int

EXEC phyadmGetNumberID @OfficeID, @NumberTypeID, @NumberID output
IF ((LEN(@Number) > 0) AND (@@RowCount = 1)) 
BEGIN           
    UPDATE Number
    SET Number = @Number, LastUpdate = GetDate()
    WHERE ID = @NumberID        
END
ELSE IF ((LEN(@Number) > 0) AND (@@RowCount = 0))  
BEGIN
    EXEC phyadmInsNumber @OfficeID, @Number, @NumberTypeID  
END
ELSE
BEGIN       
    SELECT 'In delete if statement'
    SELECT 'NumberID is ' + @NumberID
    DELETE FROM Number
    WHERE ID = @NumberID
    select * from Number where ID = @NumberID

    DELETE FROM OfficeNumber
    WHERE OfficeID = @OfficeID AND NumberID = @NumberID 

    select * from OfficeNumber WHERE OfficeID = @OfficeID AND NumberID = @NumberID  
END
END

我希望这是有道理的

SQL Server If Else If语句不起作用

2 个答案: