Re: Selecting newly added column returns empty but only when selecting with other columns in table
От | Melvin Davidson |
---|---|
Тема | Re: Selecting newly added column returns empty but only when selecting with other columns in table |
Дата | |
Msg-id | CANu8Fiwd3FmU4BJDmrBUb4HsdFBHTWVaReKFwJK2A4QJ4z-TUA@mail.gmail.com обсуждение исходный текст |
Ответ на | Selecting newly added column returns empty but only when selecting with other columns in table (mrtruji <mrtruji@gmail.com>) |
Ответы |
Re: Selecting newly added column returns empty but only
when selecting with other columns in table
|
Список | pgsql-general |
Is it possible you have more than one row where state = 'CA'? Putting a LIMIT 1 would then restrict to only 1 row.
Have you tried with no limit? IE: SELECT new_col FROM data;
On Thu, Nov 26, 2015 at 7:13 PM, mrtruji <mrtruji@gmail.com> wrote:
Just added a new bytea type column to an existing psql table and populated the column entirely with row data. Running into some strange query results:
When I select the newly added column by itself I get all the data as expected:
SELECT new_col FROM data LIMIT 1; Result: \x8481e7dec3650040b....
When I try to filter with 'where' on another column in the table, I get the values from the other columns as expected but empty from my new_column:
SELECT id, state, new_col FROM data WHERE state='CA' limit 1; Result: 123456_1; CA; EMPTY ROW
The reverse is also true. If I select my new column in combination with other columns with no 'where' I get the correct value from my new column but empty for the other columns:
SELECT id, state, new_col FROM data limit 1; Result: EMPTY ROW; EMPTY ROW; \x8481e7dec3650040b....
Thanks to anyone with advice!
--
Melvin Davidson
I reserve the right to fantasize. Whether or not you
wish to share my fantasy is entirely up to you.
I reserve the right to fantasize. Whether or not you
wish to share my fantasy is entirely up to you.

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