Re: simple select question
| От | Richard Huxton |
|---|---|
| Тема | Re: simple select question |
| Дата | |
| Msg-id | 4663DC22.8030607@archonet.com обсуждение исходный текст |
| Ответ на | simple select question ("Erol KAHRAMAN" <erol.kahraman@gmail.com>) |
| Список | pgsql-general |
Erol KAHRAMAN wrote:
> hi guys,
>
> i am newbie in postgresql. I need some help; i am trying to write like
> this:
>
> select * from TABLE where IN ('value1','valeue2',....)
You'll need to provide a column-name:
... WHERE mycolumn IN (...)
> but is it possible to give values from file.
>
> select * from TABLE where IN file
Not directly. You'd normally handle this in whatever language you are
using to query the database.
If you have a lot of values, you might find it useful to read them into
a temporary table.
CREATE TEMP TABLE my_values (...);
COPY my_values ... FROM <filename>;
ANALYSE my_values;
SELECT * FROM main_table JOIN my_values ON main_table_column =
my_values_column
Of course, that assumes you have your values one per line - see the
manuals for details of what COPY can handle.
--
Richard Huxton
Archonet Ltd
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