If you have synonym for rowid (i.e. column INTEGER PRIMARY KEY) or
some other unique columns combination then you can do something like
this:
INSERT OR REPLACE INTO table_1 (rowid, field_a, field_b, field_c, field_d)
SELECT table_1.rowid, table_2.field_a, table_2.field_b,
table_2.field_c, table_2.field_d
FROM table_1, table_2 WHERE …
Pavel
On Thu, Aug 20, 2009 at 6:01 AM, Gerald Ebner<geraldo.eb...@gmail.com> wrote:
> Dear all,
>
> it seems that sqlite does not allow update statements of this kind:
>
> UPDATE table_1 SET (field_a, field_b, field_c, field_d) = (
> SELECT field_a, field_b, field_c, field_d FROM table_2 WHERE …
> )
> WHERE ....
>
> I succeeded only with
>
> UPDATE table_1 SET
> field_a = (SELECT field_a FROM table_2 WHERE … ),
> field_b = (SELECT field_b FROM table_2 WHERE … ),
> field_c = (SELECT field_c FROM table_2 WHERE … ),
> field_d = (SELECT field_d FROM table_2 WHERE … )
> WHERE ....
>
> and that's may be not th optimal way, dealing with tables of a dozen of
> fields ....
>
> thanks in advance
> Geraldo
>
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