Question

我正在尝试在编辑表格时更新表格的状态列。我在另一个表上使用类似的触发器来更新此状态但是当我尝试将触发器放在表本身上时它将无法运行。

ALTER TRIGGER dbo.tr_Invoice_SetInvoiceStatus_Update 
ON dbo.Invoice 
AFTER INSERT, UPDATE
AS 
BEGIN

SET NOCOUNT ON;

DECLARE @InvoiceID int
DECLARE @TotalInvoice DECIMAL(18,2)
DECLARE @TotalPayments DECIMAL(18,2)
DECLARE @InvoiceStatus NVARCHAR(50)
DECLARE @InvoiceStatusID INT


SELECT @InvoiceID = ID
FROM Inserted i


SELECT @TotalPayments = IsNull(Sum(ph.Amount), 0)
FROM PaymentHistory ph
WHERE InvoiceID = @InvoiceID

SELECT @TotalInvoice = ISNULL(Total, 0)
FROM Invoice
WHERE ID = @InvoiceID

IF (@TotalPayments > 0)
BEGIN       
    IF (@TotalPayments >= @TotalInvoice)
    BEGIN
        SELECT @InvoiceStatus = 'Paid'
    END
    ELSE
    BEGIN
        SELECT @InvoiceStatus = 'Partially Paid'
    END     
END
ELSE
BEGIN
    SELECT @InvoiceStatus = 'Open'
END

SELECT @InvoiceStatusID = ID
FROM dbo.InvoiceStatus
WHERE [Name] = @InvoiceStatus

UPDATE dbo.Invoice
SET InvoiceStatusID = @InvoiceStatusID
WHERE ID = @InvoiceID

END
GO

任何帮助都会很棒？

Azure SQL数据库触发器未运行，我似乎无法弄清楚原因

0 个答案: