Обсуждение: [DOCS] can't reproduce example

The following documentation comment has been logged on the website:

Page: https://www.postgresql.org/docs/9.5/static/rangetypes.html
Description:

I tried to reproduce the example : 
CREATE EXTENSION btree_gist;
CREATE TABLE room_reservation (   room text,   during tsrange,   EXCLUDE USING GIST (room WITH =, during WITH
&&)
);

but I got this error :
ERROR:  data type text 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.

That means by default nobody is able to reproduce your example... Howto use
gist with text or varchar?

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herve@duchesne.me writes:
> I tried to reproduce the example : 
> CREATE EXTENSION btree_gist;
> CREATE TABLE room_reservation (
>     room text,
>     during tsrange,
>     EXCLUDE USING GIST (room WITH =, during WITH &&)
> );

> but I got this error :
> ERROR:  data type text has no default operator class for access method
> "gist"

It works for me.  You sure you installed the extension successfully?
        regards, tom lane


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You are right,

CREATE EXTENSION btree_gist;

the command failed because I was not superuser. I did it as postgres 
user and It works now.

Thanks.



Le 22/09/2017 à 17:47, Tom Lane a écrit :
> herve@duchesne.me writes:
>> I tried to reproduce the example :
>> CREATE EXTENSION btree_gist;
>> CREATE TABLE room_reservation (
>>      room text,
>>      during tsrange,
>>      EXCLUDE USING GIST (room WITH =, during WITH &&)
>> );
>> but I got this error :
>> ERROR:  data type text has no default operator class for access method
>> "gist"
> It works for me.  You sure you installed the extension successfully?
>
>             regards, tom lane



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