SQL 如何使用sql查询向现有值添加值
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时间:2020-09-01 12:07:49 来源:igfitidea点击:
how to add a value to existing value using sql query
提问by user475464
i have table named products
我有名为产品的表
Products
产品
Quantity
5
i need to update Quantity by any value for example '5+3'
我需要通过任何值更新数量,例如“5+3”
need output like below
需要像下面这样的输出
Quantity
8
How i write query for this?
我如何为此编写查询?
回答by juergen d
update products
set quantity = quantity + 3
回答by Manatherin
declare @table table(id int, quantity int)
insert into @table values(1, 5)
update @table
set quantity = quantity + 3
output inserted.quantity
Assuming that you actually wanted the value outputted. Don't forget any where clauses that may be needed
假设您实际上想要输出的值。不要忘记任何可能需要的 where 子句