Hi hackers,
I found that dumped view SQL failed to execute due to the explicit cast
of negative number, and I took a look at the defined SQL in view and then
found -1 in the group by clause. I suppose it’s the main reason the sql
cannot be executed and raised ERROR "GROUP BY position -1 is not in select list"
postgres=# create view v1 as select * from t1 group by a,b,-1::int;
CREATE VIEW
postgres=# \d+ v1;
View "public.v1"
Column | Type | Collation | Nullable | Default | Storage | Description
--------+---------+-----------+----------+---------+---------+-------------
a | integer | | | | plain |
b | integer | | | | plain |
View definition:
SELECT a,
b
FROM t1
GROUP BY a, b, (- 1);
After exploring codes, I suppose we should treat operator plus constant
as -'nnn'::typename instead of const, my patch just did this by handling
Opexpr especially, but I am not sure it’s the best way or not, BTW do you
guys have any suggestions and another approach?
--
Best Regards,
Haotian
