select item_id,name_tag from table_tag where unique_key_tag = 'nau-sup-cua-ngon' and com='post' group by item_id1055: Expression #2 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'thitcuavn_01.table_tag.name_tag' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by