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Sql server 用于比较sql server中产品金额和安全库存金额列的if-else语句_Sql Server_If Statement - Fatal编程技术网
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Sql server 用于比较sql server中产品金额和安全库存金额列的if-else语句

sql-server if-statement

Sql server 用于比较sql server中产品金额和安全库存金额列的if-else语句,sql-server,if-statement,Sql Server,If Statement,我想显示打印的声明“库存已达到极限！”，如果productamount正确的SQL语句如下 首先将数据库表中的值读入相关产品的参数，然后进行比较 DECLARE @ProductID int Declare @P_Amount int, @SafetyStockamount int SELECT @P_Amount = P_Amount, @SafetyStockamount = SafetyStockamount FROM products WHERE ProductId = @Prod

我想显示打印的声明“库存已达到极限！”，如果productamount正确的SQL语句如下 首先将数据库表中的值读入相关产品的参数，然后进行比较

DECLARE @ProductID int

Declare @P_Amount int, @SafetyStockamount int 

SELECT @P_Amount = P_Amount, @SafetyStockamount = SafetyStockamount
FROM products
WHERE ProductId = @ProductID

IF @P_Amount <= @SafetyStockamount 
    Print 'limit stock has been reached!'
Go

DECLARE@ProductID int
声明@P_Amount int、@SafetyStockamount int
选择@P_Amount=P_Amount，@SafetyStockamount=SafetyStockamount
来自产品
其中ProductId=@ProductId

如果@P_Amount No，则这是不正确的。如果没有
from
子句，则不能引用表的列。选择
的位置在哪里？哪种产品？海报是否遗漏了这些参数前面的“@”？请出示您的完整代码。您确定要打印该对账单吗？

DECLARE @ProductID int

Declare @P_Amount int, @SafetyStockamount int 

SELECT @P_Amount = P_Amount, @SafetyStockamount = SafetyStockamount
FROM products
WHERE ProductId = @ProductID

IF @P_Amount <= @SafetyStockamount 
    Print 'limit stock has been reached!'
Go