[gnome-db] subqueries in libgda-v4

[Massimo Cora' <maxcvs email it>]

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Hi,

I'm hacking a little around with libgda-v4 branch.
I know from bug #516442 that there are performance improvements, so I
would like to try them out.
I would also like to know just one thing: are subqueries already supported?
I tried with some simple query as

SELECT * FROM file WHERE file_id NOT IN (SELECT file_defined_id FROM symbol)

but I just got all the contents of table 'file'.
The same happens with some other subqueries like

SELECT * FROM file WHERE prj_id = (SELECT project_id FROM project WHERE
project_name = 'foo_project')

Tests have been done using a modified version of samples/SimpleExample.
BTW: there are some compilation issues there, with
gda_client_open_connection_from_string () that needs a different number
of parameters.

thanks and regards,
Massimo

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