OleDb SQL插入語句

Question

我的帳單表具有列項目，價格和數量，我的以下代碼從另一個表（產品）獲取項目和價格，但是我也想爲數量插入另一個項目。我怎樣才能把這個結合起來呢？數量= 1

INSERT INTO Bill (Item, Price) SELECT Product, Price FROM Products WHERE Product = 'Soft Drink'";

Answer 1

你可以插入一個子查詢到主SELECT語句：

INSERT INTO Bill (Item, Price) 
SELECT Produce, Price, (Select Quantity FROM SomewhereElse) 
WHERE Products = 'Soft Drink' 

或者你可以使用一個變量：

declare @Quantity decimal(18,2) 
select @Quantity = Quantity from SomewhereElse 

INSERT INTO Bill (Item, Price) 
SELECT Produce, Price, @Quantity WHERE Products = 'Soft Drink' 

Answer 2

我解決了它以下聲明：

"INSERT INTO Bill (Item, Price, Quantity) SELECT Product, Price, '1' as Quantity FROM Products WHERE Product = 'Soft Drink'";