forall is most useful when you want to minimize context switching between the pl/sql and sql engines for an array. Using forall you'll be switching context only once whereas using a regular for loop you'll be switching context for every member of the array.
Regards, Dave
[EMAIL PROTECTED] wrote:
Declare type numTbl is table of number index by binary_integer; refTbl numTbl; i number; str varchar2(30); begin refTbl (1) := 1; refTbl (9) := 1; refTbl(15) := 1; refTbl(99) := 1;
forall i in refTbl.first..refTbllast begin dbms_output.put_line ('i=' || i); str:= my_package.function(i); end; end; /
Of course, it doesn't make sense because varchar2 variable string will be lost after each iteration. May be an actual example that makes sense
would motivate more people to respond.
On 01/27/2004 12:54:29 PM, Guang Mei wrote:
My following message did not seem to make it to oracle-l.freelists. Let me try it again.
Guang
----- Hi,
I have the folliwng pl/sql code for oracle 8173. I am wondering if there is a way to make it faster by not looping each array elements, but doing some kind of "forall" opration to my_package.function?
declare type numTbl is table of number index by binary_integer; refTbl numTbl; i number; str varchar2(30); begin refTbl (1) := 1; refTbl (9) := 1; refTbl(15) := 1; refTbl(99) := 1;
i := refTbl.first; while i is not null loop dbms_output.put_line ('i=' || i); str:= my_package.function(i); i := refTbl.next(i); end loop; end; /
TIA.
Guang
-- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Guang Mei INET: [EMAIL PROTECTED]
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