Re: PG and dynamic statements in stored procedures/triggers?

Hi!

Thanks!

How do I create "cursor" or "for select" in PGSQL with dynamic way?

For example

:tbl = GenTempTableName()
insert into :tbl...
insert into :tbl...
insert into :tbl...

for select :part_id from :tbl begin
exec 'select count(*) from subitems where id = ?' using :part_id into
:sumof
update :tbl set sumof = :sumof where part_id=:part_id
end;

Can you show me same example?

Thanks:
dd

2011/3/7 Adrian Klaver <adrian(dot)klaver(at)gmail(dot)com>

> On Monday, March 07, 2011 6:32:44 am Durumdara wrote:
> > Hi!
> >
> > In other RDBMS I found a way to make dynamic statements.
> > I can use variables, or concat the SQL segments, and execute it all.
> >
> > :tablename = call CreateTempTable;
> >
> > insert into :tablename ....
> > drop table :tablename
> >
> > or (FireBird like cursor handling):
> >
> > sql = "select * from " || :tablename || " where..."
> > for select :sql ....
> > ...
> >
> > Can I do same thing in PGSQL too?
> >
> > Thanks:
> > dd
>
>
> http://www.postgresql.org/docs/9.0/interactive/plpgsql-statements.html#PLPGSQL-
> STATEMENTS-EXECUTING-DYN
> --
> Adrian Klaver
> adrian(dot)klaver(at)gmail(dot)com
>