title: ER_WRONG_FIELD_WITH_GROUP
body: <pre><code>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",
  </code></pre>
  
  <p>Why do this error comes for?
  How can I resolve it?</p>