小编Ars*_*med的帖子

code: 'ER_WRONG_FIELD_WITH_GROUP',
  errno: 1055,
  sqlMessage: "Expression #1 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'fashioncart.items.item_id' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by",

为什么会出现这个错误呢？我该如何解决？