hunk.code_window:   -> Bool
     -> EventTriggerConf
     -> Q.TxE QErr ()
   updateEventTriggerToCatalog qt allCols strfyNum etc = do
     delTriggerQ name
     mkTriggerQ name qt allCols strfyNum opsdef
     where
       EventTriggerConf name opsdef _ _ _ _ = etc
  
hunk.labels: keep keep keep add keep keep keep keep keep
hunk.after_edit:   updateEventTriggerDef name etc
  
hunk.file_path: server/src-lib/Hasura/RQL/DDL/EventTrigger.hs
hunk.type: add
file: description: Get all the orders which are not delivered at (delivered_at is NULL)
  url: /v1/query
  status: 200
  response:
    - id: 1
      received_at: '2018-09-21T09:39:44+00:00'
  query:
    type: select
    args:
      table: orders
      where:
        delivered_at:
          $is_null: true
      columns:
      - id
      - received_at
  