mysql通过两列联接查询顺序 [英] mysql join query order by two columns

问题描述

我正在尝试联接两个表，并且在两个表中我都有2个相同的列名，例如agent_id和date，两个表都具有agent_id和date，实际上我基于agent_id联接了表，现在我想按日期列进行排序，但是作为两个表有date列，因此它两次显示该date列，我希望它应该显示一次，然后按日期排序是我的表格示例:

I am trying to join two tables and in both tables I have 2 same column names like agent_id and date both tables have agent_id and date actually I join tables based on agent_id and now I want to order by date column but as both tables have date column so it's showing that date column twice I want it should be shown once and order by date here is an example of my tables:

Table 1 (sales_report)
date          agent_id  agent_name  agent_commission
01-Jan-2016   1         Jhon         200   
02-Jan-2016   2         Smith        250 
03-Jan-2016   3         Tracy        150
04-Jan-2016   4         Sam          120

Table 2 (payments)
date          agent_id  paid
02-Jan-2016   1         200   
03-Jan-2016   2         150 
04-Jan-2016   3         100
05-Jan-2016   4         50

我试图通过agent_id将这两个表连接起来，现在我的问题是如何按日期排序?

I tried to join these both tables by agent_id now my question is how can I order by date ?

这是我的查询:

SELECT *
FROM `sales_report`
INNER JOIN `payments`
ON `sales_report`.`agnt_id`=`payments`.`agnt_id` ORDER BY date

推荐答案

    SELECT sr.*,pm.paid
    FROM `sales_report` as sr
    INNER JOIN `payments` as pm
    ON sr.`agent_id`=pm.`agent_id` 
    ORDER BY sr.date, pm.date

从第一张表中获取日期，并在第一张表中的日期之前获得订单，然后在第二张表中的日期开始订购.

Will get you date from first table and order by 1st table date then 2nd table date.

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