Errormessage: Expression #1 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'fincasof_3web.cr.consultas_relaciones_1_id' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by Problem with Query: select * from consultas_relaciones_1 cr, consultas_datos_consultas_1 cdc where consultas_relaciones_1_id_categoria=10 and cr.consultas_relaciones_1_id_consulta=cdc.consultas_datos_consultas_1_id GROUP BY cr.consultas_relaciones_1_id_consulta