On 2012-12-21 07:20:00 -0500, Peter Eisentraut wrote: > In order to implement the PARAMETER_DEFAULT column in the information > schema I need a way to get the expressions out of the proargdefaults > column. pg_get_expr(proargdefaults, 0) gives me all expressions > comma-separated, but I need them individually. I think a function like > pg_get_list_nth (to keep consistent with the internal list API) could > work. Alternatively, a list-to-array function might do the trick. Are > there are any other potential uses cases that should be considered here? > AFAICT, indexprs is the only other system catalog column that contains > an expression list.
Hm. Wouldn't it be better to create a pg_node_tree[] and use that in pg_attribute? Its already in the variable length part of pg_proc anyway... Greetings, Andres Freund -- Andres Freund http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
