MySQL Error: 'Expression #1 of SELECT list contains nonaggregated column' - How to Fix

This error occurs because the query is using an aggregate function (such as SUM, COUNT, AVG, etc.) in the SELECT clause, but it is not using the GROUP BY clause. \n\nIn order to resolve this error, you have a few options:\n\n1. Add the non-aggregated column 'a.shopTaskId' to the GROUP BY clause:\n\nSELECT a.shopTaskId, SUM(a.total) \nFROM your_table a\nGROUP BY a.shopTaskId;\n\n\n2. Use an aggregate function for the non-aggregated column 'a.shopTaskId':\n\nSELECT MAX(a.shopTaskId), SUM(a.total) \nFROM your_table a;\n\n\n3. Disable the 'only_full_group_by' mode in your MySQL configuration. However, this may not be recommended as it can lead to unexpected results:\n\nSET sql_mode=(SELECT REPLACE(@@sql_mode,'ONLY_FULL_GROUP_BY',''));\n\n\nChoose the option that best fits your requirements and adjust the query accordingly.'}