Create a record in TABLE with the values in HASHREF. If there's already one that matches on the KEY field, update the existing record instead of creating a new one. Pass an empty KEY to just insert the record without checking.
Remove the record with id ID from TABLE.
Search TABLE for a row where KEY equals VALUE, and return its "id" field.
Hey! The above document had some coding errors, which are explained below:
'=item' outside of any '=over'
=over without closing =back