I thought NULLs don't work in arrays yet? :-)
http://archives.postgresql.org/pgsql-committers/2005-11/msg00385.php
http://developer.postgresql.org/docs/postgres/arrays.html
Someone's checked that this NULLs in arrays stuff doesn't affect indexes
over array elements, etc.? Or indexes that don't store nulls, etc.
Chris
---------------------------(end of broadcast)---------------------------
TIP 9: In versions below 8.0, the planner will ignore your desire to
choose an index scan if your joining column's datatypes do not
match
