mysql error 1140 In aggregated query without GROUP BY, expression #2 of SELECT list contains nonaggregate

In aggregated query without GROUP BY, expression #1 of SELECT list contains nonaggregated column'szmz_zhbz_gov.b.cremation_time'; this is incompatible with sql_mode=only_full_group_by

After reviewing the information, we learned that group by has been optimized after MySQL version 5.7. By default, the improved version starts the ONLY_FULL_GROUP_BY mode.

That is, ONLY_FULL_GROUP_BY is a sql_mode provided by the MySQL database. This sql_mode is used to ensure the validity of the SQL statement "grouping for the most value". This mode adopts the processing method with Oracle, DB2 and other databases. That is, columns with ambiguous semantics are not allowed in the select target list.

Solution:

As long as there are aggregate functions sum(), count(), max(), avg(), etc., you need to use group by

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