Hi,

Thanks for your reply. It is automatic, my app don’t creates ID, it delegates 
it to the DB. I am using Ruby on Rails app, where we use Postgresql. 

docking_dev=# \d chinese_price_infos;
                                         Table "public.chinese_price_infos"
   Column    |            Type             | Collation | Nullable |             
        Default                     
-------------+-----------------------------+-----------+----------+-------------------------------------------------
 id          | integer                     |           | not null | 
nextval('chinese_price_infos_id_seq'::regclass)
 created_at  | timestamp without time zone |           |          | 
 updated_at  | timestamp without time zone |           |          | 
 item_code   | character varying(255)      |           |          | 
 description | character varying(255)      |           |          | 
 unit        | character varying(255)      |           |          | 
 price_cents | integer                     |           |          | 
 uuid        | uuid                        |           |          | 
uuid_generate_v4()
 company_id  | uuid                        |           |          | 
Indexes:
    "chinese_price_infos_pkey" PRIMARY KEY, btree (id)
    "index_chinese_price_infos_on_company_id" btree (company_id)




Thanks,

Arup Rakshit
a...@zeit.io



> On 06-May-2019, at 4:38 PM, Ray O'Donnell <r...@rodonnell.ie> wrote:
> 
> On 06/05/2019 12:05, Arup Rakshit wrote:
>> Every time I try to insert I get the error:
>> docking_dev=# INSERT INTO "chinese_price_infos" ("item_code",
>> "price_cents", "unit", "description", "company_id", "created_at",
>> "updated_at") VALUES ('01GS10001', 6000, 'Lift', 'Shore Crane
>> Rental', '9ae3f8b8-8f3f-491c-918a-efd8f5100a5e', '2019-05-06
>> 10:49:03.894725', '2019-05-06 10:49:03.894725'); ERROR:  duplicate
>> key value violates unique constraint "chinese_price_infos_pkey" DETAIL:  Key 
>> (id)=(71165) already exists. docking_dev=# INSERT INTO
>> "chinese_price_infos" ("item_code", "price_cents", "unit",
>> "description", "company_id", "created_at", "updated_at") VALUES
>> ('01GS10001', 6000, 'Lift', 'Shore Crane Rental',
>> '9ae3f8b8-8f3f-491c-918a-efd8f5100a5e', '2019-05-06 10:49:03.894725',
>> '2019-05-06 10:49:03.894725'); ERROR:  duplicate key value violates
>> unique constraint "chinese_price_infos_pkey" DETAIL:  Key
>> (id)=(71166) already exists.
>> Then I found:
>> docking_dev=# SELECT MAX(id) FROM chinese_price_infos; max -------- 128520 
>> (1 row)
>> docking_dev=# SELECT nextval('chinese_price_infos_id_seq'); nextval 
>> --------- 71164 (1 row)
>> Not sure how it is out of sync. How can I fix this permanently. I ran
>> vacuum analyze verbose; still same error.
> 
> 
> You can fix it by using setval() to set the sequence manually to something 
> higher than the highest current id value in the table. However, it sounds as 
> if something in the application code may be causing problems.... For example, 
> is something generating id values without reference to the sequence?
> 
> Ray.
> 
> 
> 
> -- 
> Raymond O'Donnell // Galway // Ireland
> r...@rodonnell.ie



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