Mixing of Group Columns with No Group Columns
问题 I got this error and I'm not sure how to work with it. Simple explanations would be much appreciated. Error: 1140: Mixing of GROUP columns (MIN(),MAX(),COUNT(),...) with no GROUP columns is illegal if there is no GROUP BY clause - SELECT email , COUNT(*) AS records_found FROM ( emails ) WHERE email = 'Email Address' 回答1: You can't use aggregate functions (like count(*)) with non-aggregated columns (like email) unless you include a group by clause. I'm assuming you are intending to try and get