On Wed, 2004-10-27 at 22:45 -0700, Jonathan Daugherty wrote: > # CREATE OR REPLACE FUNCTION get_default_value (text, text, text) RETURNS text AS ' > # SELECT adsrc > # FROM pg_attrdef, pg_class, pg_namespace, pg_attribute > # WHERE > # adrelid = pg_class.oid AND > # pg_class.relnamespace = pg_namespace.oid AND > # pg_attribute.attnum = pg_attrdef.adnum AND > # pg_attribute.attrelid = pg_class.oid AND > # pg_namespace.nspname = $1 AND > # pg_class.relname = $2 AND > # pg_attribute.attname = $3; > # ' language sql; > > As per Tom's mention of pg_depend, here's something that seems to do > the trick for the time being, assuming the column is a serial: > > -- get_sequence(schema_name, table_name, column_name) > > CREATE OR REPLACE FUNCTION get_sequence (text, text, text) RETURNS > text AS ' > SELECT seq.relname::text > FROM pg_class src, pg_class seq, pg_namespace, pg_attribute, > pg_depend > WHERE > pg_depend.refobjsubid = pg_attribute.attnum AND > pg_depend.refobjid = src.oid AND > seq.oid = pg_depend.objid AND > src.relnamespace = pg_namespace.oid AND > pg_attribute.attrelid = src.oid AND > pg_namespace.nspname = $1 AND > src.relname = $2 AND > pg_attribute.attname = $3; > ' language sql; >
Thanks, this seems to work well. My goal is to actually create a php function that takes a result and returns the insert_id like mysql_insert_id() does, but without needing to know the sequence names and such. I would make a psql function, but I don't always have that option with some clients existing systems. -Robby -- /*************************************** * Robby Russell | Owner.Developer.Geek * PLANET ARGON | www.planetargon.com * Portland, OR | [EMAIL PROTECTED] * 503.351.4730 | blog.planetargon.com * PHP/PostgreSQL Hosting & Development * --- Now supporting PHP5 and PHP4 --- ****************************************/
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