As Michael said, path data type does not support for gist operators. Anyway, you could redefine data type using 'ltree' instead of 'path'. Take a look on the following link:
On Thu, Sep 4, 2014 at 8:35 AM, Eric Fleming <efleming@gmail.com> wrote: > I have a table that I have defined as: > > CREATE TABLE test ( > "id" SERIAL PRIMARY KEY, > "first_path" path NOT NULL, > "second_path" path NOT NULL > ); > > I am attempting to create a GiST index on the two "path" columns using: > > CREATE INDEX "idx_test_first_path" ON test USING gist(first_path); > CREATE INDEX "idx_test_second_path" ON test USING gist(second_path); > > I am getting this error: > > Error : ERROR: data type path has no default operator class for access > method "gist" > > Is it that I am not allowed to create an index on the path data type or do I > need to enable an extension for this to work? Thanks in advance for your > help.
In-core contrib modules (and core) do not have yet support for gist operator classes for the datatype path as far as I recall. Regards, -- Michael
