在子查詢中支持esper having子句？

Question

我寫了下面的查詢中的超能力：

on pattern[every timer:interval(10 sec)] delete from OrderEvent as OE where OE.orderId IN (select orderId from OrderEvent group by orderId having last(orderAction) = CANCEL) 

但它給我一個語法錯誤附近有，如果不支持，有什麼可替代的解決方案

Answer 1

根據它看起來像的文檔「having」子句在子查詢中不受支持。另一種方法是選擇並導致刪除。

on pattern[..] insert into DELETED_ID select orderId from OrderEvent where orderAction=CANCEL 
on DELETED_ID as del delete from OrderEvent as orderEvent where orderEvent.orderId = del.orderId