将 RECURSIVE 作为查询中的第二部分 CTE。Postgres

Question

我如何编写这样的查询：

with t1 as 
(
select id 
from table1
),
RECURSIVE t2(
select * from t2
union
...
)

目前不允许？

Answer 1

无论您将递归 CTE 放在哪里，都recursive必须位于紧随其后：WITH

with recursive t1 as 
(
  select id 
  from table1
), t2 (
  select *  
  from t2
  union
  ...
)
...