Question

这可能很简单，但我一直无法搞清楚。我有一段代码（类似于下面的代码），我通过select为一堆变量分配一堆值，它完成了工作，但是当我运行它时，我得到的结果集导致我的SSMS崩溃了避免这种情况的方法......

DECLARE @Name VARCHAR(100)
DECLARE @LastName VARCHAR(100)
DECLARE @Address VARCHAR(100)

SELECT TOP 1 
@Name = Name
@LastName = LastName
@Address = Address
From Person.Address
Where Name = 'Name'
Order By ID

我在一个循环中使用上面的代码，我处理大约3-400K行并将这些变量传递给存储过程，每个top 1 select语句抛出一个结果集导致我的SSMS崩溃我真的不需要select要显示的前1个值，任何想法如何摆脱这个？....

非常感谢任何帮助。

---如下面所要求的那样是代码，我已经删除了一些东西，但这就是它，我从Query Analayzer运行它，因为这只是一次进程所以我们不需要创建SP。

    DECLARE @retstat INT 
    DECLARE @Name VARCHAR(255)
    DECLARE @Lang TINYINT
    DECLARE @Address CHAR(10)
    DECLARE @ID INT 
    DECLARE @BranchSeqNo INT

    DECLARE @AddressCode VARCHAR(10)    
    DECLARE @Address1 VARCHAR(50) 

    DECLARE @City VARCHAR(30) 
    DECLARE @State VARCHAR(3)   
    DECLARE @PostalCode VARCHAR(15)     
    DECLARE @Country VARCHAR(30)    

    SET @ID = NULL

    UPDATE  RAWClaimTable Set Processed = 0 where Processed is null

    UPDATE  RAWClaimTable SET  ErrorCode = NULL ,ErrorMessage = NULL ,Processed = 0
    WHERE   ErrorMessage IS NOT NULL AND CLAIMID is null 

WHILE EXISTS ( SELECT   *
           FROM     RAWClaimTable
           WHERE    Processed = 0 ) 
BEGIN 

-----Initialize Default Variables 
    SET @Lang = 0 
    SET @Address = 'Import'
    SET @SaveMode = 0 
    SET @ID = Null


    SELECT TOP 1
            @LossDate = LossDate ,
            @ClaimDate = ClaimDate ,
            @OpenDate = OpenDate ,
            @Receivedate = ReceiVeDate ,
            @Name = Name ,
            @Address = Address ,
            @Address1 = Address1 ,
            @City = City ,
            @State = State ,
            @PostalCode = PostalCode ,
            @Country = Country
    FROM    RAWClaimTable
    WHERE   Processed = 0
    ORDER BY ClaimID 

    BEGIN TRY 

        EXEC @RetStat = Usp_ProcessRawData @Lang, @Address, @SaveMode, @ID OUT,
            @BranchSeqNo, @OriginalBranchSeqNo, @IncidentID,
            @AssignmentTypeCode, @PartnershipID, @AccountID,

    END TRY         

    BEGIN CATCH

        SELECT  @RetStat = @@Error
        if @@Trancount > 0 rollback tran
        IF @RetStat != 0
            BEGIN
                update RAWClaimTable set Errormessage = ERROR_MESSAGE() where ClaiMKey = @Name
            END 
    END CATCH

    IF @ID IS NOT NULL 
        BEGIN
            UPDATE  RAWClaimTable
            SET     ClaimID = @ID ,
                    Processed = 1
            WHERE   ClaiMKey = @Name
        END      
    ELSE 
        BEGIN
            UPDATE  RAWClaimTable
            SET     Processed = 1
            WHERE   ClaiMKey = @Name
        END      

END

Answer 1

使用CURSOR循环你的行！

SET @Lang = 0 
SET @Address = 'Import'
SET @SaveMode = 0 
SET @ID = Null

DECLARE my_cursor CURSOR FOR 
    SELECT LossDate, ClaimDate, OpenDate, ReceiVeDate, Name, Address, 
       Address1, City, State, PostalCode, Country
    FROM RAWClaimTable
    WHERE Processed = 0
OPEN my_cursor

FETCH NEXT FROM my_cursor
INTO @LossDate, @ClaimDate, @OpenDate, @Receivedate, @Name, @Address,
     @Address1, @City, @State, @PostalCode, @Country

WHILE @@FETCH_STATUS = 0
BEGIN
   BEGIN TRY 
     EXEC @RetStat = Usp_ProcessRawData @Lang, @Address, @SaveMode, @ID OUT,
          @BranchSeqNo, @OriginalBranchSeqNo, @IncidentID,
          @AssignmentTypeCode, @PartnershipID, @AccountID,
   END TRY         

   BEGIN CATCH        
     SELECT  @RetStat = @@Error
       if @@Trancount > 0 rollback tran
       IF @RetStat != 0
           BEGIN
             update RAWClaimTable set Errormessage = ERROR_MESSAGE() 
             where ClaiMKey = @Name
           END 
   END CATCH

   IF @ID IS NOT NULL 
       BEGIN
           UPDATE  RAWClaimTable
           SET     ClaimID = @ID ,
                   Processed = 1
           WHERE   ClaiMKey = @Name
       END      
   ELSE 
       BEGIN
           UPDATE  RAWClaimTable
           SET     Processed = 1
           WHERE   ClaiMKey = @Name
       END      

   FETCH NEXT FROM my_cursor
   INTO @LossDate, @ClaimDate, @OpenDate, @Receivedate, @Name, @Address,
        @Address1, @City, @State, @PostalCode, @Country
END

不要选择显示值的变量

1 个答案: