Re: EXCLUDE, Gist and integers

Hi,

Le 16 juil. 2015 2:23 AM, "Ken Tanzer" <ken(dot)tanzer(at)gmail(dot)com> a écrit :
>
> Hi. I'm looking into adding daterange exclusions to some of my tables.
Following the documentation, I can do this no problem to prevent any
records from overlapping:
>
> CREATE TEMP TABLE foo (
> client_id integer,
> start_date date NOT NULL,
> end_date date,
> EXCLUDE using gist (daterange(start_date,end_date) with &&)
> );
>
> But what I really want is no overlapping records on a per-client basis.
I optimistically tried this:
>
> CREATE TEMP TABLE foo (
> client_id integer,
> start_date date NOT NULL,
> end_date date,
> EXCLUDE using gist (daterange(start_date,end_date) with &&,client_id
with =)
> );
>
> But Postgres responds thusly:
>
> ERROR: data type integer has no default operator class for access method
"gist"
> HINT: You must specify an operator class for the index or define a
default operator class for the data type.
>
> Can someone tell me what's the easiest way to make this work? Thanks in
advance!
>

You should install the btree_gist extension.