Alban Hertroys <dal...@solfertje.student.utwente.nl> wrote: > [...] > None of these solutions are pretty. It should be quite a common problem > though, how do people normally solve this?
Partial indexes? Doesn't look pretty either though: | tim=# \d DE_Postcodes | Tabelle »public.de_postcodes« | Spalte | Typ | Attribute | ----------+---------+----------- | postcode | integer | not null | city | text | not null | suffix | text | | street | text | not null | first | integer | | last | integer | | Indexe: | "de_postcodes_key1" UNIQUE, btree (postcode, city, suffix, street, first, last) WHERE suffix IS NOT NULL AND first IS NOT NULL AND last IS NOT NULL | "de_postcodes_key2" UNIQUE, btree (postcode, city, suffix, street, first) WHERE suffix IS NOT NULL AND first IS NOT NULL AND last IS NULL | "de_postcodes_key3" UNIQUE, btree (postcode, city, suffix, street, last) WHERE suffix IS NOT NULL AND first IS NULL AND last IS NOT NULL | "de_postcodes_key4" UNIQUE, btree (postcode, city, suffix, street) WHERE suffix IS NOT NULL AND first IS NULL AND last IS NULL | "de_postcodes_key5" UNIQUE, btree (postcode, city, street, first, last) WHERE suffix IS NULL AND first IS NOT NULL AND last IS NOT NULL | "de_postcodes_key6" UNIQUE, btree (postcode, city, street, first) WHERE suffix IS NULL AND first IS NOT NULL AND last IS NULL | "de_postcodes_key7" UNIQUE, btree (postcode, city, street, last) WHERE suffix IS NULL AND first IS NULL AND last IS NOT NULL | "de_postcodes_key8" UNIQUE, btree (postcode, city, street) WHERE suffix IS NULL AND first IS NULL AND last IS NULL | "de_postcodes_postcodecity" btree (postcode, city) | tim=# Tim -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
