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Re: [Postgres-xc-general] HELP with MOODLE and Postgres-XC
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From: Afonso B. <aag...@gm...> - 2013-06-13 11:39:57
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Hi,
I miss to send this!
psql (PGXC 1.0.3, based on PG 9.1.9)
Type "help" for help.
moodle=# INSERT INTO mdl_context VALUES(nextval('mdl_context_id_seq'),
50,'1',0,1);
INSERT 0 1
moodle=# INSERT INTO mdl_context VALUES(nextval('mdl_context_id_seq'),
50,'1',0,1);
INSERT 0 1
moodle=# INSERT INTO mdl_context VALUES(nextval('mdl_context_id_seq'),
50,'1',0,1);
INSERT 0 1
moodle=# select * from mdl_context;
id | contextlevel | instanceid | path | depth
----+--------------+------------+------+-------
1 | 50 | 1 | 0 | 1
1 | 50 | 1 | 0 | 1
1 | 50 | 1 | 0 | 1
thanks
On Thu, Jun 13, 2013 at 7:37 AM, Afonso Bione <aag...@gm...> wrote:
> Hi, Abbas,
>
> First I'd the thank you for your prompt answer,
> 1 - I tried to install direct from moodle.org (moodle25+)
> the first column id is missing because its use a sequence to get
> the next value.
> I installed the same version (moodle25+) with postgres91 and
> everything goes well.
>
> 2 - when I tried to install in the same way, in postgres-xc I get the
> error message tha t i send to you
> I will try your suggestions
> and try it again,
>
> When I finished I will share our experience
> Best Regards
> Afonso Bione
>
>
> On Thu, Jun 13, 2013 at 3:54 AM, Abbas Butt <abb...@en...>wrote:
>
>>
>> Hi,
>> There are a few things you need to look at.
>>
>> 1. The definition of the table mdl_context has 5 columns, whereas the
>> INSERT is only mentioning 4. The first column i.e. id is missed and was not
>> given any default value either. For me even the first attempt to run the
>> insert fails, let alone the duplicate key error, which would be expected on
>> second attempt.
>>
>> 2. I am supposing that you were able to create moodle database in XC and
>> when you ran moodle GUI and tried to create something it failed, Is this
>> true? If yes what configuration of cluster are you using? If not from where
>> is this insert coming from?
>>
>> 3. I tried a modified test case similar to what you mentioned on current
>> master and found it works fine.
>>
>> CREATE TABLE mdl_context (id bigint NOT NULL,contextlevel bigint DEFAULT
>> 0 NOT NULL,instanceid bigint DEFAULT 0 NOT NULL,path character
>> varying(255),depth smallint DEFAULT 0 NOT NULL);
>>
>> ALTER TABLE public.mdl_context OWNER TO edb;
>> ALTER TABLE ONLY mdl_context ADD CONSTRAINT mdl_cont_id_pk PRIMARY KEY
>> (id);
>>
>> CREATE SEQUENCE mdl_context_id_seq START WITH 1 INCREMENT BY 1 NO
>> MINVALUE NO MAXVALUE CACHE 1;
>>
>> ALTER TABLE public.mdl_context_id_seq OWNER TO edb;
>> ALTER SEQUENCE mdl_context_id_seq OWNED BY mdl_context.id;
>>
>> INSERT INTO mdl_context VALUES(nextval('mdl_context_id_seq'),
>> 50,'1',0,NULL);
>> INSERT INTO mdl_context VALUES(nextval('mdl_context_id_seq'),
>> 50,'1',0,NULL);
>> INSERT INTO mdl_context VALUES(nextval('mdl_context_id_seq'),
>> 50,'1',0,NULL);
>> INSERT INTO mdl_context VALUES(nextval('mdl_context_id_seq'),
>> 50,'1',0,NULL);
>> select * from mdl_context;
>> id | contextlevel | instanceid | path | depth
>> ----+--------------+------------+------+-------
>> 3 | 50 | 1 | | 0
>> 4 | 50 | 1 | | 0
>> 1 | 50 | 1 | | 0
>> 2 | 50 | 1 | | 0
>> (4 rows)
>>
>> If you happen to run moodle successfully , please do share your
>> experiences.
>>
>> Regards
>>
>> On Wed, Jun 12, 2013 at 3:46 PM, Afonso Bione <aag...@gm...> wrote:
>>
>>> Please, i'm very new in postgres-xc and I need help with
>>> instlal moodle 2.5 with postgres-xc
>>>
>>> here is the error message
>>>
>>> Debug info: ERROR: duplicate key value violates unique constraint
>>> "mdl_cont_id_pk"
>>> DETAIL: Key (id)=(1) already exists.
>>> INSERT INTO mdl_context (contextlevel,instanceid,depth,path)
>>> VALUES($1,$2,$3,$4) RETURNING id
>>> [array (
>>> 'contextlevel' => 50,
>>> 'instanceid' => '1',
>>> 'depth' => 0,
>>> 'path' => NULL,
>>> )]
>>>
>>> ---------------------------------------------
>>> and this are the tables that the system shows
>>>
>>>
>>> --
>>> -- Name: mdl_context; Type: TABLE; Schema: public; Owner: postgres;
>>> Tablespace:
>>> --
>>>
>>> CREATE TABLE mdl_context (
>>> id bigint NOT NULL,
>>> contextlevel bigint DEFAULT 0 NOT NULL,
>>> instanceid bigint DEFAULT 0 NOT NULL,
>>> path character varying(255),
>>> depth smallint DEFAULT 0 NOT NULL
>>> );
>>>
>>>
>>> ALTER TABLE public.mdl_context OWNER TO postgres;
>>>
>>> --
>>> -- Name: mdl_cont_id_pk; Type: CONSTRAINT; Schema: public; Owner:
>>> postgres; Tablespace:
>>> --
>>>
>>> ALTER TABLE ONLY mdl_context
>>> ADD CONSTRAINT mdl_cont_id_pk PRIMARY KEY (id);
>>>
>>>
>>>
>>> --
>>> -- Name: TABLE mdl_context; Type: COMMENT; Schema: public; Owner:
>>> postgres
>>> --
>>>
>>> COMMENT ON TABLE mdl_context IS 'one of these must be set';
>>> -
>>> -- Name: mdl_context_id_seq; Type: SEQUENCE; Schema: public; Owner:
>>> postgres
>>> --
>>>
>>> CREATE SEQUENCE mdl_context_id_seq
>>> START WITH 1
>>> INCREMENT BY 1
>>> NO MINVALUE
>>> NO MAXVALUE
>>> CACHE 1;
>>>
>>>
>>> ALTER TABLE public.mdl_context_id_seq OWNER TO postgres;
>>>
>>> --
>>> -- Name: mdl_context_id_seq; Type: SEQUENCE OWNED BY; Schema: public;
>>> Owner: postgres
>>> --
>>>
>>> ALTER SEQUENCE mdl_context_id_seq OWNED BY mdl_context.id;
>>>
>>>
>>> --
>>> -- Name: mdl_context_temp; Type: TABLE; Schema: public; Owner: postgres;
>>> Tablespace:
>>> --
>>>
>>> CREATE TABLE mdl_context_temp (
>>> id bigint NOT NULL,
>>> path character varying(255) DEFAULT ''::character varying NOT NULL,
>>> depth smallint NOT NULL
>>> );
>>>
>>>
>>> ALTER TABLE public.mdl_context_temp OWNER TO postgres;
>>>
>>> --
>>> -- Name: TABLE mdl_context_temp; Type: COMMENT; Schema: public; Owner:
>>> postgres
>>> --
>>> COMMENT ON TABLE mdl_context_temp IS 'Used by build_context_path() in
>>> upgrade and cron to keep context depths and paths in sync.';
>>>
>>>
>>> Best Regards
>>> Afonso Bione
>>>
>>>
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>>>
>>
>>
>> --
>> --
>> *Abbas*
>> Architect
>>
>> Ph: 92.334.5100153
>> Skype ID: gabbasb
>> www.enterprisedb.co <http://www.enterprisedb.com/>m<http://www.enterprisedb.com/>
>> *
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>>
>
>
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