Alter sequence restart parameter type

2021-04-26 Thread PG Doc comments form
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Page: https://www.postgresql.org/docs/12/sql-altersequence.html
Description:

Hi!
I have some question about alter sequence. I can see in your documentation
https://www.postgresql.org/docs/12/sql-altersequence.html  Synopsis:
ALTER SEQUENCE [ IF EXISTS ] name
[ AS data_type ]
[ INCREMENT [ BY ] increment ]
[ MINVALUE minvalue | NO MINVALUE ] [ MAXVALUE maxvalue | NO MAXVALUE
]
[ START [ WITH ] start ]
[ RESTART [ [ WITH ] restart ] ]
[ CACHE cache ] [ [ NO ] CYCLE ]
[ OWNED BY { table_name.column_name | NONE } ]

I use postgresql 12.6. I want to restart my sequence something like that:
alter sequence quiz_seq restart with ((select max(id) from quiz)+1); 
but I can't do it.  Please, clarify. Can I use only plain numbers like
that?
alter sequence quiz_seq restart with 42;

Is it possible to clarify the type of the parameter RESTART in the
documentation?


Re: Alter sequence restart parameter type

2021-04-26 Thread David G. Johnston
On Sunday, April 25, 2021, PG Doc comments form 
wrote:

>
> I use postgresql 12.6. I want to restart my sequence something like that:
> alter sequence quiz_seq restart with ((select max(id) from quiz)+1);
> but I can't do it.  Please, clarify. Can I use only plain numbers like
> that?

alter sequence quiz_seq restart with 42;


Yes


>
> Is it possible to clarify the type of the parameter RESTART in the
> documentation?
>

Not,desirable.  This command isn’t special with regard to the fact the
utility commands don’t get to use embedded queries to supply values.
Though you can just write some pl/pgsql and build a dynamic command.

David J.