"Thomas F. O'Connell" <tfo@xxxxxxxxxxxx> writes: > In an old thread <http://archives.postgresql.org/pgsql-admin/2004-01/ > msg00271.php>, Tom Lane suggested that it would be "unreasonable" to > use pg_index to reconstruct (expressional) indexes (in 7.4). The > suggested alternative was to use pg_get_indexdef(). IIRC, the point I was trying to make was that making client code try to interpret the contents of pg_index.indexprs or pg_index.indpred is a losing proposition. If you feel that you'd rather read the other fields of pg_index for yourself, I won't argue with you. regards, tom lane