Re: how to select temp table

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От Alvaro Herrera
Тема Re: how to select temp table
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Msg-id 20090506192354.GK4476@alvh.no-ip.org
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Ответ на Re: how to select temp table  (Robert Gravsjö <robert@blogg.se>)
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Robert Gravsjö escribió:
> On 2009-05-06 14.34, liuzg4 liuzg4 wrote:
>> ver 8.4
>> i create two table with same name  named 'testtable'
>>
>> one is temp table
>>
>>   i select * from testtable
>> then this table is a public  or a temp ???
>
> Temp. To access public use "select * from public.testtable".
>
> "Temporary tables exist in a special schema, so a schema name cannot be
> given when creating a temporary table."

Note that you can refer to the temp table like this:

select * from pg_temp.testtable;

Also, you can make the non-temp table first in the search path by
putting pg_temp later than the public schema (or wherever you have
created the function):


select * from testtable;    -- refers to temp
set search_path to 'public', 'pg_temp';
select * from testtable;    -- refers to non-temp

--
Alvaro Herrera                                http://www.CommandPrompt.com/
The PostgreSQL Company - Command Prompt, Inc.

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