Re: PL/PGSQL help for getting number of rows matched.

Hello,

it isn't problem. You can write

SELECT INTO ....
IF FOUND THEN
 ...
END IF

or

SELECT INTO  ..
GET DIAGNOSTICS variable = ROW_COUNT;
IF variable > 0 THEN
  ...
END IF

You can see on
http://developer.postgresql.org/docs/postgres/plpgsql-statements.html#PLPGSQL-SELECT-INTO

Regards
Pavel


On Mon, 10 Nov 2003, Rajesh Kumar Mallah wrote:

>
> Hi,
>
> We need to implement following logic efficiently.
>
> SELECT * from some_table where .... [ Query 1 ]
>
> IF rows_matched = 1 THEN
>
>     use the single row that matched.
>
> ELSIF
>
>     loop thru the results of [Query 1]
>
> END IF;
>
>
> Currently i am doing select count(*) for getting rows_matched
> in the top and repeating the same query in both branches of IF
> to get the data of matching rows.
>
> I have tried GET DIAGNOSTICS ROW_COUNT but for
> "SELECTS" if returns 0 or 1 based on matching
>
> I am sure there exists better methods. Kindly post a link
> to better documentation of pl/pgsql or point out section in
> the standard docs that discuss this issue.
>
> Regds
> Mallah.
>
>
>
>
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