RE: collections / records / index-by, etc

From: Bala, Prakash <prakash.bala_at_cingular.com>
Date: Thu, 06 Sep 2001 13:24:33 -0700
Message-ID: <F001.00385EED.20010906133603@fatcity.com>

Lisa,

How about this:

declare
EmpRec Emp%ROWTYPE;
type EmpTable is table of EmpRec%type index by binary_integer; emp EmpTable;
begin

  emp(1).ename := 'xx';
  emp(1).ssn := 896767097;
  emp(2).ename := 'yy';

end;

Prakash

-----Original Message-----
Sent: Thursday, September 06, 2001 10:36 AM To: Multiple recipients of list ORACLE-L

Good morning everyone,

well I finally have something to work on. Not being one to whip out shoddy code, I want to write my load scripts utilizing pl/sql tables and caching as much as I can, along with utilizing FORALL and BULK COLLECT.

The last time I did this, I was creating table rows in pl/sql INDEX-BY tables. I had one pl/sql table for each column in the target table (that I was going to insert modified rows to) and it worked fine, very fast in fact. However, it was an awful mess because I ended up maintaining many many INDEX-BY tables with one index to refer to each record.

What I'm talking about is this

table in the db is emp : enum number, ename varchar

To represent this table in memory and assemble the records I created the following index-by tables at the module (package) level

mtab_ename
mtab_enum

and inserted values like so

mtab_enum(idx) := var1;
mtab_ename(idx) := var2;

and when it came time to insert, this is what I did

FORALL i IN mtab_enum.FIRST..mtab_enum.LAST INSERT INTO emp (enum, ename) VALUES mtab_enum(i), mtab_ename(i);

My question is, is there a way I can have one object that represents the structure of the entire emp table? I tried this

TYPE emptabtype IS TABLE OF emp%ROWTYPE INDEX BY BINARY_INTEGER;

mtab_emp emptabtype;

But this doesn't seem to work. I can't pull the values out (var := mtab_emp.ename(i)). I also don't want to use varrays just because I have to explicitly set the size.

I also want to be able to use BULK COLLECT and FORALL. Otherwise this kind of stuff is a waste of time. I then read in the documentation that "Collections can have only one dimension and must be indexed by integers". It sounds like what I want to do isn't possible.

Any suggestions or comments are appreciated. Thanks

Lisa Koivu
Oracle Database Administrator
Fairfield Resorts, Inc.
954-935-4117

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Author: Bala, Prakash
INET: prakash.bala_at_cingular.com

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RE: collections / records / index-by, etc - long, sorry