我已经写了以下声明,该声明以我需要更新另一个表的格式返回数据,但是我正在努力应对更新
SELECT element_id,
LISTAGG(cast(0 as varchar2(20))||', '|| VALUE, ' | ') WITHIN GROUP (ORDER BY display_order)
FROM EDRN.MD$$_ELEMENT_VALUES
WHERE element_id IN
(SELECT element_id FROM EDRN_NEW.DATA_DICTIONARY)
GROUP BY element_id;
我做了一个基本的转换为UPDATE语句
UPDATE EDRN_NEW.DATA_DICTIONARY
SET Choices = (LISTAGG(CAST(0 AS VARCHAR2(20))||', '|| VALUE, ' | ') WITHIN GROUP (ORDER BY display_order)
FROM EDRN.MD$$_ELEMENT_VALUES
WHERE element_id IN
(SELECT element_id FROM EDRN_NEW.DATA_DICTIONARY)
GROUP BY element_id);
这收到了" ORA-00934:这里不允许使用组功能"错误。我不确定如何删除组功能但保留我需要的数据格式?
答案 0 :(得分:1)
您需要使用子查询listagg()
。在这种情况下,相关子查询:
update EDRN_NEW.DATA_DICTIONARY dd
set choices = (SELECT LISTAGG(cast(0 as varchar2(20))||', '|| VALUE, ' | ') WITHIN GROUP (ORDER BY display_order)
FROM EDRN.MD$$_ELEMENT_VALUES ev
WHERE ev.element_id = dd.element_id
)
where exists (select 1
from EDRN.MD$$_ELEMENT_VALUES ev
where ev.element_id = dd.element_id
);