MySql 计数失败代码的出现次数

Question

I am trying to count the number of times something happened with a failure status in my database and retrieve the name of the failure. I have a table builds that holds what the failurearea is and table called failureareas that has the names of all the failurearea codes. I want to be able to count these so I can graph out the data and tell our devs how their builds most commonly fail.

This is what I am trying, but it isn't working:

SELECT COUNT(B.id), F.name 
   FROM builds B 
  JOIN failureareas F ON B.failurearea = F.id
 WHERE DATE(B.submittime) >= DATE_SUB(CURDATE(), INTERVAL 30 DAY) 
   AND B.buildstatus != 2

Answer 1

You need to use GROUP BY:

SELECT COUNT(B.id), F.name
FROM builds B  JOIN failureareas F ON B.failurearea = F.id
WHERE DATE(B.submittime) >=  DATE_SUB(CURDATE(), INTERVAL 30 DAY) AND B.buildstatus != 2
GROUP BY F.name