選擇具有限定的可變WITH

Question

我有

with 
s1 as (select serial from wingstatushref where href = ? for key share), 
i1 as (insert into wingstatushref 
select ? 
where not exists(select * from s1) 
on conflict (href) do update set href=? returning serial) 

它使用相同的？三次。我試圖整合？成與：

with 
h as (values (?)), 
s1 as (select serial from wingstatushref where href=h for key share), 
i1 as (insert into wingstatushref 
select h 
where not exists(select * from s1) 
on conflict (href) do update set href=h returning serial) 
select serial from s1 union all select serial from i1; 

但是，這給了我

x SQL Compiles and Typechecks 
x ERROR: column "h" does not exist 
    Position: 83 (specs2.scala:64) 

什麼是從SELECT子句引用小時數據的正確方法是什麼？

Answer 1

由於RhodiumToad從#postgresql

with 
    h(hr) as (values (?)), 
    s1 as (select serial from h, wingstatushref where href=h.hr for key share), 
    i1 as (insert into wingstatushref 
    select hr from h 
    where not exists(select * from s1) 
    on conflict (href) do update set href=wingstatushref.href where EXCLUDED.href=wingstatushref.href returning serial) 
    select serial from s1 union all select serial from i1;