houdini/lib/query/query_custom_fields.rb

# frozen_string_literal: true

# License: AGPL-3.0-or-later WITH Web-Template-Output-Additional-Permission-3.0-or-later
require 'psql'
require 'qexpr'

module QueryCustomFields
  # Find all duplicate custom field joins on supporters
  # Returns an array of groups of duplicate custom_field_join_ids
  def self.find_dupes(np_id)
    Qx.select('ARRAY_AGG(custom_field_joins.id)')
      .from(:custom_field_joins)
      .join(:custom_field_masters, 'custom_field_masters.id=custom_field_joins.custom_field_master_id')
      .where('custom_field_masters.nonprofit_id=$id', id: np_id)
      .group_by('custom_field_joins.custom_field_master_id', 'custom_field_joins.value', 'custom_field_joins.supporter_id')
      .having('COUNT(custom_field_joins.id) > 1')
      .execute(format: 'csv')[1..-1]
  end
end