Re: How to write such a query?

Hi, Ron,

On Thu, Jan 6, 2022 at 1:01 AM Ron <ronljohnsonjr(at)gmail(dot)com> wrote:
>
> On 1/6/22 12:39 AM, Igor Korot wrote:
> > Hi, ALL,
> > In SQLite you can write:
> >
> > SELECT a, b, c FROM foo WHERE id = :id;
> >
> > where ":id" is the named parameter.
> >
> > The query above is similar to
> >
> > SELECT a,b,c FROM foo WHERE id = ?;
> >
> > except that the parameter has a name.
> >
> > Is there a way to write such a SELECT statement with the
> > named parameter in PostgreSQL?
> Absolutely. Of course, the exact method depends on the client. Are you
> referring to psql?
>
> If so, then here's an example:
> $ psql12 -v S=456789012 test
> psql (12.8 (Ubuntu 12.8-1.pgdg18.04+1))
> Type "help" for help.
>
> test=# select * from employee where ssn = :'S';
> ssn | name | ssn_int
> -----------+-----------------+-----------
> 456789012 | Fred Flintstone | 456789012
> (1 row)
>
> In this case, column ssn is of type varchar(9).

Is the syntax available since 9.0+? Or later?
I'm writing C++.

Thank you.

>
> --
> Angular momentum makes the world go 'round.
>
>