Solve the MySQL 5.7.9 version sql_mode=only_full_group_by problem

MySQL 5.7.9 version sql_mode=only_full_group_by issue

When using the GROUP BY statement to query, the error com.MySQL.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Expression #2 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'col_user_6.a.START_TIME' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by occurs

Solution:

Execute SET GLOBAL sql_mode = ''; to change sql_mode to a mode other than only_full_group_by.

Verify that SELECT @@GLOBAL.sql_mode or SELECT @@sql_mode is in effect

SET sql_mode = 'STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE

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