Question

通过从实际表中过滤数据，我将其插入临时表，然后一些批量值来自它，然后我再次将其插入到另一个临时表中以进行检查循环并将实际表中的某些值更新到数据库中。那么如何循环检索列值呢？

直到我到达：

CREATE TABLE #result 
        (           
           PackagePeriod     varchar(20),
           UserId            INT,           
           OldExpiryDate     DATE,         
           AmountToPay       FLOAT,
           PyingAmount       FLOAT,
           Balance           FLOAT,
           LastPaidDate      DATE,
           Company_Id        INT           
        )

create table #temp
        (
            PackagePeriod    varchar(20),
           UserId            INT,           
           OldExpiryDate     DATE,         
           AmountToPay       FLOAT,
           PyingAmount       FLOAT,
           Balance           FLOAT,
           LastPaidDate      DATE,
           Company_Id        INT
        )           

        SET @cmd ='.... where OldExpiryDate<=Replace(CONVERT(VARCHAR(20), (GetDate()-1), 106),' ','-')

    select @count=(select COUNT(PackagePeriod) from #temp)

    if(PackagePeriod='Monthly')
    begin
    update ...
    end
    else if(PackagePeriod='Quarterly')
    begin
    update ..

Answer 1

你的问题不明确。我认为您可以使用Cursor或While来解决您的问题。

CREATE TABLE #result 
        (           
           PackagePeriod     varchar(20),
           UserId            INT,           
           OldExpiryDate     DATE,         
           AmountToPay       FLOAT,
           PyingAmount       FLOAT,
           Balance           FLOAT,
           LastPaidDate      DATE,
           Company_Id        INT           
        )

declare @PackagePeriod     varchar(20)
declare @UserId            int          
declare @OldExpiryDate     DATE         
declare @AmountToPay       FLOAT
declare @PyingAmount       FLOAT
declare @Balance           FLOAT
declare @LastPaidDate      DATE
declare @Company_Id        INT           

declare result_cursor cursor for 
        SELECT PackagePeriod, UserId,  OldExpiryDate,  AmountToPay, PyingAmount, Balance, LastPaidDate, Company_Id from  #result

OPEN result_cursor

FETCH NEXT FROM result_cursor INTO @PackagePeriod, @UserId,  @OldExpiryDate,  @AmountToPay, @PyingAmount, @Balance, @LastPaidDate, @Company_Id

WHILE @@FETCH_STATUS = 0

BEGIN

    if(@PackagePeriod='Monthly')
    begin
       -- update your table 
    end
    else if(@PackagePeriod='Quarterly')
    begin
        --update table
    end

  FETCH NEXT FROM result_cursor INTO @PackagePeriod, @UserId,  @OldExpiryDate,  @AmountToPay, @PyingAmount, @Balance, @LastPaidDate, @Company_Id

END

CLOSE result_cursor

DEALLOCATE result_cursor

如何在sql中循环检索列值？

1 个答案: