Обсуждение: cursor manipulation

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cursor manipulation

От
Justin
Дата:
Cursor manipulation with select statements

This is something i did in foxpro and wonder if it is at all possible in
pl/pgSQL.  I would create a cursor in foxpro then populate it with
Inserts then after all that was done use a Select statement to do more
manipulation if need be

the Foxpro code would look something like this
---------------
Create Cursor plaything (cname char(10),  price n(14,4),  qty n(14,4))

For  i in SomeArrayofObjects
    insert into playting (i.Company, i.Price, i.qty)
end for

Select cName,  max(price*qty), avg(price * qty), min(price*avg)  from
plaything  group by Cname into cursor plaything2
----------------

After a cursor has been created can a Select statement see it or do i
have to create a temp table
thanks

Re: cursor manipulation

От
"Albe Laurenz"
Дата:
Justin wrote:
> Cursor manipulation with select statements
>
> This is something i did in foxpro and wonder if it is at all
> possible in pl/pgSQL.

Yes, it is. See
http://www.postgresql.org/docs/current/static/plpgsql-cursors.html

Yours,
Laurenz Albe