MySql对over子句使用正确的语法 [英] MySql using correct syntax for the over clause

问题描述

使over子句在mysql中工作的正确语法是什么?

What is the correct syntax to get the over clause to work in mysql?

我想查看每个用户发送的短信总数，而不用group by子句将其分组.

I would like to see the total sms's sent by each user without grouping it with the group by clause.

SELECT 
    username, 
    count(sentSmsId) OVER (userId) 
FROM 
    sentSmsTable,
    userTable
WHERE
    userId = sentUserId;

推荐答案

我不知道MySQL中没有OVER子句，但这是一个可以帮助您实现相同结果的链接:

There is no OVER clause in MySQL that I know of, but here is a link that might assist you to accomplish the same results:

http://explainextended.com/2009 /03/10/analytic-functions-first_value-last_value-lead-lag/

希望这会有所帮助.

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