Re: [GENERAL] Reset Sequence number - Mailing list pgsql-general

From Wèi Cōngruì
Subject Re: [GENERAL] Reset Sequence number
Date
Msg-id CAPxZtjH7Yumum7E2o9ySPe6cN4hXB7i02H+VOeJfZ5LHmqMRdw@mail.gmail.com
Whole thread Raw
In response to Re: [GENERAL] Reset Sequence number  (amul sul <sulamul@gmail.com>)
List pgsql-general
The 'SEQ' part can't be substituted by variable.

DO $$
 DECLARE
 SEQ BIGINT;
 BEGIN
  SEQ := (SELECT MAX(ID) FROM TABLE_1);
  EXECUTE format('ALTER SEQUENCE TABLE_1_SEQ RESTART WITH %s', SEQ);
 END
$$;

On Wed, Nov 22, 2017 at 6:26 PM, amul sul <sulamul@gmail.com> wrote:
Firstly, anonymous procedures are not supported in PostgreSQL, you need to
embed this block in a plpgsql function[1] body & call that function if you want
reset sequence value manually, or you could use CYCLE option[2] of a
sequence to auto reset.


1] https://www.postgresql.org/docs/9.6/static/plpgsql-structure.html
2] https://www.postgresql.org/docs/devel/static/sql-createsequence.html


Regards,
Amul

On Wed, Nov 22, 2017 at 3:06 PM, Brahmam Eswar <brahmam1234@gmail.com> wrote:
>
> we are in process of migrating to postgres and need to reset the sequence
> number with highest value of table key . I want to make it procedural to do
> that as mentioned below,But it's throwing an error .
>
>
>
> DO $$
>  DECLARE
>  SEQ BIGINT;
>  BEGIN
>
>   SEQ:=(SELECT MAX(ID) FROM TABLE_1);
>   ALTER SEQUENCE TABLE_1_SEQ  RESTART WITH SEQ;
>
>  END$$;
>
> Error : syntax error at or near "SEQ"
>
> --
> Thanks & Regards,
> Brahmeswara Rao J.


pgsql-general by date:

Previous
From: Raymond O'Donnell
Date:
Subject: Re: [GENERAL] Reset Sequence number
Next
From: Thomas Kellerer
Date:
Subject: Re: Reset Sequence number