UNION ALL 有 4 张桌子答案

【问题标题】：UNION ALL with 4 tablesUNION ALL 有 4 张桌子
【发布时间】：2020-12-30 05:23:12
【问题描述】：

我对 MSSQL 和全栈开发非常陌生，我想用 4 个不同的表执行 UNION ALL 用于贷款储蓄管理系统下面的代码是我有 4 个表的存储过程，我得到了错误

消息 207，级别 16，状态 1，程序 USP_GetLoanSavingsDetailsByLoanTakerId，第 13 行列名“GetSavings”无效。

消息 207，级别 16，状态 1，程序 USP_GetLoanSavingsDetailsByLoanTakerId，第 13 行列名“GiveSavings”无效

这是我的代码，我想实现 Loan Give to a person, Loan Received from a person, 从某人那里获得的储蓄和给予在同一天进行交易的人的储蓄 MemberId 是我要贷款并将储蓄提供给的人，UserId 是希望将贷款提供给会员并获得/提供储蓄给同一个人的人

ALTER PROCEDURE [dbo].[USP_GetLoanSavingsDetailsByLoanTakerId]
(
    @MemberId bigint,
    @UserId bigint
)
AS
BEGIN
    
    --EXEC USP_GetLoanSavingsDetailsByLoanTakerId 5, 26


SELECT EntryDate, SUM(LoanGiven) AS LoanGiven, SUM(LoanReceived) AS LoanReceived , SUM(GetSavings) AS GetSavings, SUM(GiveSavings) AS GiveSavings
FROM(  
    SELECT EntryDate, TotalAmount as LoanGiven, 0 as LoanReceived
    FROM tblGiveLoan 
    WHERE UserId = @UserId and MemberId = @MemberId
    UNION ALL   
    SELECT EntryDate, 0 as LoanGiven, Amount as LoanReceived
    FROM tblReceiveLoan
    WHERE UserId = @UserId and MemberId = @MemberId
    UNION ALL
    SELECT EntryDate, TotalAmount as GetSavings, 0 as GiveSavings
    FROM tblGetSavings 
    WHERE UserId = @UserId and MemberId = @MemberId
    UNION ALL   
    SELECT EntryDate, 0 as GetSavings , TotalAmount as GiveSavings
    FROM tblGiveSavings
    WHERE UserId = @UserId and MemberId = @MemberId
) t
GROUP BY EntryDate
ORDER BY EntryDate ASC  
 END

【问题讨论】：

错误消息声称您使用的是 MS SQL aka SQL Server，而不是 MySQL。该问题已重新标记。
我遇到错误在 UNION 中，输出行集的名称取自第一个子查询，所有其他子查询的名称/别名都被忽略。
请确认是MySQL还是SQL Server，并相应更新您的问题（第一句和标签）。
它是 SQL Server
@Akina 我还有一个问题你能帮我吗？ stackoverflow.com/questions/65918586/…

标签： sql-server stored-procedures union-all

【解决方案1】：

ALTER PROCEDURE [dbo].[USP_GetLoanSavingsDetailsByLoanTakerId]
(
    @MemberId bigint,
    @UserId bigint
)
AS
BEGIN
    
    --EXEC USP_GetLoanSavingsDetailsByLoanTakerId 5, 26


SELECT EntryDate, SUM(LoanGiven) AS LoanGiven, SUM(LoanReceived) AS LoanReceived , SUM(GetSavings) AS GetSavings, SUM(GiveSavings) AS GiveSavings
FROM(  
        SELECT EntryDate, TotalAmount as LoanGiven, 0 as LoanReceived, 0 as GetSavings, 0 as GiveSavings
        FROM tblGiveLoan 
        WHERE UserId = @UserId and MemberId = @MemberId
    UNION ALL   
        SELECT EntryDate, 0, Amount, 0, 0
        FROM tblReceiveLoan
        WHERE UserId = @UserId and MemberId = @MemberId
    UNION ALL
        SELECT EntryDate, 0, 0, TotalAmount, 0
        FROM tblGetSavings 
        WHERE UserId = @UserId and MemberId = @MemberId
    UNION ALL   
        SELECT EntryDate, 0, 0, 0, TotalAmount
        FROM tblGiveSavings
        WHERE UserId = @UserId and MemberId = @MemberId
    ) t
GROUP BY EntryDate
ORDER BY EntryDate ASC  
END

【讨论】：

谢谢它工作得很好非常感谢