Question

尝试修改插入的数据库触发器。因此，如果StoreID等于6005，则插入一些文本，如果没有，则插入i。[BillEmail]。

 INSERT INTO [FRTOOLS_Orders]
    (OrderNumber, ShipFirstName, ShipLastName, ShipCompany, ShipStreet1, ShipStreet2, ShipStreet3, ShipCity, ShipState, ShipPostalCode, ShipCountryCode, BillPhone, BillFax, BillEmail, RequestedShipping, OrderID, OrderTotal, EmailNotification)
SELECT i.[OrderNumber],
       i.[ShipFirstName] + ' ' + i.[ShipMiddleName],
       i.[ShipLastName],
       i.[ShipCompany],
       i.[ShipStreet1],
       i.[ShipStreet2],
       i.[ShipStreet3],
       i.[ShipCity],
       i.[ShipStateProvCode],
       i.[ShipPostalCode],
       i.[ShipCountryCode],
       i.[BillPhone],
       i.[BillFax], 
       CASE WHEN i.[StoreID] = 6005 THEN 'sales@***.com' ELSE i.[BillEmail],
       i.[RequestedShipping],
       i.[OrderID],
       i.[OrderTotal],
       i.[BillEmail]
FROM inserted i

很可能这不是使用CASE语句的正确方法。＆＃39;＆＃39;附近的语法错误＆＃39;错误的语法＆＃39;

Answer 1

正如上面的评论所指出，你需要终止一个带有END

的CASE语句

 INSERT INTO [FRTOOLS_Orders]
    (OrderNumber, ShipFirstName, ShipLastName, ShipCompany, ShipStreet1, ShipStreet2, ShipStreet3, ShipCity, ShipState, ShipPostalCode, ShipCountryCode, BillPhone, BillFax, BillEmail, RequestedShipping, OrderID, OrderTotal, EmailNotification)
SELECT i.[OrderNumber],
       i.[ShipFirstName] + ' ' + i.[ShipMiddleName],
       i.[ShipLastName],
       i.[ShipCompany],
       i.[ShipStreet1],
       i.[ShipStreet2],
       i.[ShipStreet3],
       i.[ShipCity],
       i.[ShipStateProvCode],
       i.[ShipPostalCode],
       i.[ShipCountryCode],
       i.[BillPhone],
       i.[BillFax], 
       CASE WHEN i.[StoreID] = 6005 THEN 'sales@***.com' ELSE i.[BillEmail] END,
       i.[RequestedShipping],
       i.[OrderID],
       i.[OrderTotal],
       i.[BillEmail]
FROM inserted i

请注意，您的case语句可以包含多个WHEN子句（在这种情况下，这可能对您有用，也可能没用）

CASE 
WHEN i.[StoreID] = 0 THEN '<unknown>' 
WHEN i.[StoreID] = 6005 THEN 'sales@***.com' 
WHEN i.[StoreID] IN (9997,9999) THEN 'sales@blahblah.com' 
ELSE i.[BillEmail] END,

在insert触发器中使用case语句

1 个答案: