Or possibly more simply just keep a database lookup table with columns:

keyword || id_reference_to_text_column

then query that table with your keywords like "select id_reference_to_text_column from lookup_table where keyword in (key1, key2, ...)" or however you do that in postgres. Then you could simply sum up the occurrences of each id_reference_to_text_column.

Or faster with group by (mysql syntax)

create table tmp (kwd varchar(255), idx integer, primary key (kwd, idx))

populate table ... then query it like

select idx, count(*) from tmp where kwd in ("heugh", "stook", "tanti")
+ group by idx

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In reply to Re^2: Faster of two options for finding keywords in a database by Danny
in thread Faster of two options for finding keywords in a database by cormanaz

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