RE: Pgsql error in coalesce
| От | Stephen Froehlich |
|---|---|
| Тема | RE: Pgsql error in coalesce |
| Дата | |
| Msg-id | CH2PR06MB6470C24B3FCBDDFA763E55B3E5720@CH2PR06MB6470.namprd06.prod.outlook.com обсуждение исходный текст |
| Ответ на | Re: Pgsql error in coalesce (Chamath Sajeewa <csgsajeewa@gmail.com>) |
| Список | pgsql-novice |
The documentation says nothing about it … so no I have no clue. Personally, I tend to use that function in R more than I do in PostgreSQL.
From: Chamath Sajeewa <csgsajeewa@gmail.com>
Sent: Monday, July 27, 2020 11:15
To: Stephen Froehlich <s.froehlich@cablelabs.com>
Cc: pgsql-novice@lists.postgresql.org
Subject: Re: Pgsql error in coalesce
Hi,
Query is working properly when column_name::integer is used. I wonder Why is it required when column type is already set to int4. Any idea?
On Mon, 27 Jul 2020, 22:35 Stephen Froehlich, <s.froehlich@cablelabs.com> wrote:
What do you get with the following two type castings:
SELECT coalesce(column_name::integer, 255); ?
SELECT coalesce(column_name, ‘255’::text)::integer; ?
“integer” might actually be “smallint” if you’re only going to 255.
--Stephen
From: Chamath Sajeewa <csgsajeewa@gmail.com>
Sent: Monday, July 27, 2020 10:51
To: pgsql-novice@lists.postgresql.org
Subject: Pgsql error in coalesce
Hi,
There is table with int4 column. When select query is executed as "select coalesce(column_name, 255), query is failing with below error.
"COALESCE types text and integer cannot be mached".
Any idea?
Thank You!!
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