2021年4月3日星期六

Non aggregated Column with Count

I am very new to MySQL, I am trying to make an events page that counts and displays likes. I get the error:

Error details: SQLSTATE[42000]: Syntax error or access violation: 1055 Expression #10 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'db.events_likes.id' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by  

I cannot change SQL mode, so I was wondering if there was a way to aggregate the column?

code:

SELECT  *, eventid, COUNT(events_likes.id) AS likes, GROUP_CONCAT(users.fname SEPARATOR '|') AS liked_by FROM  events       LEFT JOIN events_likes        ON events.eventid = events_likes.event         LEFT JOIN users       ON events_likes.user = users.id       GROUP BY events.eventid         
https://stackoverflow.com/questions/66937416/non-aggregated-column-with-count April 04, 2021 at 10:02AM

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