text: CREATE TABLE func_import_entity_contact_method_delta(
      change_uuid VARCHAR(40) NOT NULL,
      entity_contact_method_uuid VARCHAR(40) NOT NULL,
      method VARCHAR,
      mvalue VARCHAR
  );
  
  
  CREATE TRIGGER
      func_import_entity_contact_method_delta_bi_1
  BEFORE INSERT ON
      func_import_entity_contact_method_delta
  FOR EACH ROW
  BEGIN
  
      SELECT debug(
          NEW.change_uuid,
          NEW.entity_contact_method_uuid,
          NEW.method,
          NEW.mvalue
      );
  
      INSERT INTO
          func_update_entity_contact_method(
              change_id,
              entity_contact_method_id,
              method,
              mvalue
          )
      SELECT
          c.uuid,
          t.id,
          NEW.method,
          NEW.mvalue
      FROM
          topics t
      INNER JOIN
          changes c
      ON
          c.uuid = NEW.change_uuid
      WHERE
          t.uuid = NEW.entity_contact_method_uuid
      ;
  
      SELECT RAISE(IGNORE);
  END;
  