我需要在下面使用join而不是Subquery。 任何人都可以帮我用JOIN重写这个。
update Table1
set status = 'Edited'
where val_74 ='1' and status ='Valid'
and val_35 is not null
and (val_35,network_id) in
(select val_35,network_id from
Table2 where val_35 is not null
and status='Correct_1');
update Table1 b SET (Val_12,Val_13,Val_14)=
(select Val_12,Val_13,Val_14 from
(select Val_35,network_id, Val_12, Val_13, Val_14
from Table2
where Val_34 is not null
and (REGEXP_LIKE(Val_13,'^[0-9]+$'))
and (Val_14 is null or (REGEXP_LIKE(Val_14,'^[0-9]+$')))
group by Val_35,network_id,Val_12,Val_13,Val_14
)
where Val_35 = b.Val_35 and network_id = b.network_id and rownum=1
)
where status = 'PCStep2' and (regexp_like(Val_13,'[MSS]+') or regexp_like(Val_14,'[MSS]+'));
我在SQL JOIN中使用了较少的知识,尝试了很多。但得到多个错误。 我们最早可以帮助我查询。
提前衷心感谢
答案 0 :(得分:0)
实际上,您不能将update语句与join语句混合使用。在update
命令之后,update
语句始终需要一个表定义。
-- ORA-00971: missing SET keyword
update orders o, customers c
set o.order_value = c.account_value
where o.cust_id = c.cust_id
-- works fine
update orders o
set o.order_value = (select c.account_value
from customers c
where c.id = o.cust_id)