using pl/sql with update is very slow. much slower than just sql. so only use if you absolutely have to.
i avoid it at all costs. > > From: "Jamadagni, Rajendra" <[EMAIL PROTECTED]> > Date: 2003/07/11 Fri PM 03:09:24 EDT > To: Multiple recipients of list ORACLE-L <[EMAIL PROTECTED]> > Subject: RE: full usefulness of CURRENT OF ??? > > Try with a complicated where clause where your where_clause is a page long > ... > > Raj > ---------------------------------------------------------------------------- > ---- > Rajendra dot Jamadagni at nospamespn dot com > All Views expressed in this email are strictly personal. > QOTD: Any clod can have facts, having an opinion is an art ! > > > -----Original Message----- > Sent: Friday, July 11, 2003 2:54 PM > To: Multiple recipients of list ORACLE-L > > > Could anyone give us an idea as to the full usefullness > of CURRENT OF? Here are my two separate examples: > > > /* 1 this one has a CURRENT OF */ > > DECLARE > > CURSOR EmpCursor IS > SELECT * > FROM Emp > FOR UPDATE; > > BEGIN > FOR EmpRec IN EmpCursor LOOP > > UPDATE EMP > SET SALARY = SALARY * 1.08 > WHERE CURRENT OF EmpCursor > > END LOOP; > > END; > > > /* 2 same as above, except without the CURRENT OF */ > DECLARE > > CURSOR EmpCursor IS > SELECT * > FROM Emp > FOR UPDATE; > > BEGIN > FOR EmpRec IN EmpCursor LOOP > > UPDATE EMP > SET SALARY = SALARY * 1.08 > WHERE EMP_ID = EmpRec.Emp_ID; > > END LOOP; > > END; > / > > > Is one more efficient than the other? If I could have done > business without the CURRENT OF, then why did oracle made > it available? > > thx > maa > > -- > Please see the official ORACLE-L FAQ: http://www.orafaq.net > -- > Author: Maryann Atkinson > INET: [EMAIL PROTECTED] > > Fat City Network Services -- 858-538-5051 http://www.fatcity.com > San Diego, California -- Mailing list and web hosting services > --------------------------------------------------------------------- > To REMOVE yourself from this mailing list, send an E-Mail message > to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in > the message BODY, include a line containing: UNSUB ORACLE-L > (or the name of mailing list you want to be removed from). You may > also send the HELP command for other information (like subscribing). > > > *********************************************************************This e-mail > message is confidential, intended only for the named recipient(s) above and may > contain information that is privileged, attorney work product or exempt from > disclosure under applicable law. If you have received this message in error, or are > not the named recipient(s), please immediately notify corporate MIS at (860) > 766-2000 and delete this e-mail message from your computer, Thank > you.*********************************************************************1 > >Title: RE: full usefulness of CURRENT OF ???
Try with a complicated where clause where your where_clause is a page long ...
Raj
--------------------------------------------------------------------------------
Rajendra dot Jamadagni at nospamespn dot com
All Views expressed in this email are strictly personal.
QOTD: Any clod can have facts, having an opinion is an art !
-----Original Message-----
From: Maryann Atkinson [mailto:[EMAIL PROTECTED]]
Sent: Friday, July 11, 2003 2:54 PM
To: Multiple recipients of list ORACLE-L
Subject: full usefullness of CURRENT OF ???
Could anyone give us an idea as to the full usefullness
of CURRENT OF? Here are my two separate examples:
/* 1 this one has a CURRENT OF */
DECLARE
CURSOR EmpCursor IS
SELECT *
FROM Emp
FOR UPDATE;
BEGIN
FOR EmpRec IN EmpCursor LOOP
UPDATE EMP
SET SALARY = SALARY * 1.08
WHERE CURRENT OF EmpCursor
END LOOP;
END;
/* 2 same as above, except without the CURRENT OF */
DECLARE
CURSOR EmpCursor IS
SELECT *
FROM Emp
FOR UPDATE;
BEGIN
FOR EmpRec IN EmpCursor LOOP
UPDATE EMP
SET SALARY = SALARY * 1.08
WHERE EMP_ID = EmpRec.Emp_ID;
END LOOP;
END;
/
Is one more efficient than the other? If I could have done
business without the CURRENT OF, then why did oracle made
it available?
thx
maa
--
Please see the official ORACLE-L FAQ: http://www.orafaq.net
--
Author: Maryann Atkinson
INET: [EMAIL PROTECTED]
Fat City Network Services -- 858-538-5051 http://www.fatcity.com
San Diego, California -- Mailing list and web hosting services
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