我试图从子查询中选择多个变量,以便以后使用。这是我的代码:
DECLARE @MarketplaceName VARCHAR(50),
@ProductFieldID INT,
@FromValue VARCHAR(255) = (
SELECT mcvm.MarketplaceName,
mcvm.ProductFieldID,
mcvm.FromValue
FROM [Meta].[MarketplaceCategoryValueMapping] AS mcvm
WHERE mcvm.MarketplaceCategoryValueMappingID = @MapID
)
我收到以下错误消息:
如果未使用EXISTS引入子查询,则只能在选择列表中指定一个表达式。
我正在尝试从
@MarketplaceName
等映射mcvm.MarketplaceName
。我想不必为每个这些变量编写多个
SELECT
语句。 最佳答案
您是否正在尝试这样做?
DECLARE @MarketplaceName VARCHAR(50),
@ProductFieldID INT,
@FromValue VARCHAR(255)
SELECT @MarketplaceName = mcvm.MarketplaceName,
@ProductFieldID = mcvm.ProductFieldID,
@FromValue = mcvm.FromValue
FROM [Meta].[MarketplaceCategoryValueMapping] AS mcvm
WHERE mcvm.MarketplaceCategoryValueMappingID = @MapID
关于sql - 如何在T-SQL中分配多个内联变量?,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/14245738/