TEMP tables get created in database temp; which is located in "a file" or "in 
memory" depending on the SQLITE_TEMP_STORE preprocessor symbol and the pragma 
temp_store.

-----Urspr√ľngliche Nachricht-----
Von: Stephan Beal [mailto:sgb...@googlemail.com]
Gesendet: Montag, 27. Oktober 2014 11:44
An: General Discussion of SQLite Database
Betreff: Re: [sqlite] quasi-bug related to locking, and attached databases....

On Mon, Oct 27, 2014 at 11:08 AM, Stephan Beal <sgb...@googlemail.com>
wrote:

> - TEMP tables get created in the MAIN db (assuming my memory of the
> docs is correct), which means we can (though accidental misuse or
> carelessness) end up filling up RAM with temporary tables (which we
> use regularly to process large data amounts). This is my biggest concern with 
> this approach.
>

In fact, it seems impossible to use any db _except_ the main one for temp
tables:

sqlite> .databases
seq  name             file
---  ---------------
 ----------------------------------------------------------
0    main             /home/portal/tmp/bar.db
2    foo              /home/portal/tmp/foo.db
sqlite> create temp table foo.baz(z);
Error: temporary table name must be unqualified

Which rules out use of a :memory: db has the local "main" - we make use of temp 
tables with arbitrarily large data sets.


--
----- stephan beal
http://wanderinghorse.net/home/stephan/
http://gplus.to/sgbeal
"Freedom is sloppy. But since tyranny's the only guaranteed byproduct of those 
who insist on a perfect world, freedom will have to do." -- Bigby Wolf 
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