Re: [GENERAL] Need help returning record set from a dynamic sql query

Dear murali,

We use psql for our ERP software .We found CREATE TYPE is useful in creating new data type similar to creating domain.
For eg
       CREATE TYPE date_condition (
                   condition_id int,
                   from_date  date,
                   to_date    date);                   

Instead , you can CREATE TABLE (ORDERSID INTEGER,ORDERDATE TIMESTAMP,COMPANYNAME TEXT,EVENTNAME CHARACTER VARYING);

You can have result returning a set of records

Feel free to comment on it

Regrds
sathish

On Tue, Aug 12, 2008 at 3:08 PM, MuraliPD@GMail <murali.pd@gmail.com> wrote:

Hi,

Iam new to Postgresql, now i need to create a Dynamic SQL Query for returning the record set
based on my Input Parameters. I looked up some of the documents and worked out some more ...

MY Postgresql Version In Local: 7.4
MY Postgresql Version In Development: 8.2


-- DROP TYPE ORDERREPORT;
CREATE TYPE ORDERREPORT AS (ORDERSID INTEGER,ORDERDATE TIMESTAMP,COMPANYNAME TEXT,EVENTNAME CHARACTER VARYING);


-- DROP FUNCTION FUN_ORDERREPORT(IN pmOrderId INTEGER,IN pmCompanyId INTEGER,IN pmEventId INTEGER);
CREATE OR REPLACE FUNCTION FUN_ORDERREPORT(IN pmOrderId INTEGER,IN pmCompanyId INTEGER,IN pmEventId INTEGER) RETURNS SETOF ORDERREPORT AS
'
DECLARE
vResult ORDERREPORT%ROWTYPE;
vSql TEXT = ''
SELECT
   ORDR.ORDERSID       AS OrderID,
   ORDR.INITIATED       AS Order_Date,
   COMP.COMPANYNAME    AS Company_Name,
   EVNT.EVENTNAME      AS Event_Name
FROM
   ORDERS ORDR
   INNER JOIN COMPANY COMP ON COMP.COMPANYID = ORDR.COMPANY
   INNER JOIN EVENT EVNT ON EVNT.COMPANY = COMP.COMPANYID
WHERE
   ORDR.EVENT = EVNT.EVENTID '';
BEGIN
   IF $1 IS NOT NULL THEN
      vSql = vSql ||'' AND ORDR.ORDERSID = ''|| $1;
   END IF;
        
   IF $2 IS NOT NULL THEN
      vSql = vSql ||'' AND COMP.COMPANYID = ''|| $2;
   END IF;

   IF $3 IS NOT NULL THEN
      vSql = vSql ||'' AND EVNT.EVENTID = ''|| $3;
   END IF;
   EXECUTE vSql INTO vResult;
   RETURN NEXT vResult;
END '
LANGUAGE 'PLPGSQL';

Result:

events=# SELECT * FROM FUN_ORDERREPORT(102881,NULL,NULL);
ordersid |         orderdate          | companyname |    eventname
----------+----------------------------+-------------+-----------------
   102881 | 2006-02-10 14:49:53.002653 | PhotoMania  | Photos
(1 row)

events=# SELECT * FROM FUN_ORDERREPORT(NULL,NULL,NULL);
ordersid |         orderdate          | companyname |    eventname
----------+----------------------------+-------------+-----------------
   102881 | 2006-02-10 14:49:53.002653 | PhotoMania  | Photos
(1 row)


Iam getting just the first record from the recordset.
Can someone help me how can i return all query results from a Dynamic SQL Query?


--
Thanks,
MuraliDharan V