text: ALTER TABLE `conversation_text_editor` 
  DROP FOREIGN KEY `fk_conversation_doc_20`;
  ALTER TABLE `conversation_text_editor` 
  ADD INDEX `fk_conversation_doc_20_idx` (`text_editor_id` ASC),
  DROP INDEX `fk_conversation_doc_2_idx` ;
  ALTER TABLE `conversation_text_editor` 
  ADD CONSTRAINT `fk_conversation_doc_20`
    FOREIGN KEY (`text_editor_id`)
    REFERENCES `text_editor` (`id`)
    ON DELETE CASCADE
    ON UPDATE NO ACTION;
  
  