<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def get_column_declaration_list_sql(self, fields):
 """ Gets declaration of a number of fields in bulk. """

        query_fields = []

        for name, field in fields.items():
            query_fields.append(self.get_column_declaration_sql(name, field))

        return ", ".join(query_fields)