SQL查询多个项目的增加项目价值价格 [英] Sql Query for increase item value price for multiple item

问题描述

我想编写SQL查询以按百分比增加商品价格.

I want to write Sql Query for increase item price by percentage.

场景是:-

在表中，我有3列文字:ID，商品名称，价格

In table, I have 3 coloumn : ID, Item-Name, Price

Example : If item-Name is T-shirt, Increase price by 10%

         item-Name is Jins , Increase price by 50%

         item-Name is top , Increase price by 5%

推荐答案

如果您要更新表，则可以进行条件更新.

If you are looking to update the table you can do conditional update.

update table_name
set 
price = 
case 
 when `Item-Name` = 'T-shirt' then price+( (price*10) /100 )
 when `Item-Name` = 'Jins' then price+( (price*50) /100 )
 when `Item-Name` = 'top' then price+( (price*5) /100 )
end ;

如果您希望在选择时不对表进行任何更新就显示涨价的情况，则可以执行以下操作.

And if you are looking to show the increased price without doing any update in the table at the time of select then you can do as below.

select id,`Item-Name`,price,
case 
     when `Item-Name` = 'T-shirt' then price+( (price*10) /100 )
     when `Item-Name` = 'Jins' then price+( (price*50) /100 )
     when `Item-Name` = 'top' then price+( (price*5) /100 )
     else price
    end as new_price from table_name;

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