wieck@debis.com (Jan Wieck) writes:
> There are functions text(lztext) and lztext(text) too, but
> the system is unable to find an operator if one compares
> text=lztext in a query. IIRC, creating a function named as
> the target type and taking the source type is what made auto-
> type-conversion work - so what am I missing here?
Yup, TypeCategory was the missing ingredient. Seems to work now.
> Yes, the 3043 bytes long rule action string got stored in 855
> bytes in pg_rewrite. That's 71.9% compression rate on this
> attempt!
Over all the rules in the regression test database, I see:
regression=# select sum(length(ev_action)),sum(octet_length(ev_action)) from pg
_rewrite; sum | sum
--------+-------105270 | 38091
(1 row)
or about 64% compression. Not bad...
regards, tom lane