Gerardo Herzig <gherzig@fmed.uba.ar> schrieb:
> Thanks! But now i have another problem related with count():
>
> select page_id, word, word_position, count(page_id) from (select * from
> search_word('word1', 'table1') union search_word('word2', 'table2')) foo
> group by page_id;
>
> and gives me "foo.word must appear in GROUP clause or be used in an
> aggregate function"
>
> And i want to group by page_id only, because that is what i need to count.
> Tips here?
You can't aggregate without grouping the not-aggregated columns.
Expand your 'group by' with word and word_position.
Andreas
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