RE: RE: [PMX:#] update about 100K records

From: Jamadagni, Rajendra <Rajendra.Jamadagni_at_espn.com>
Date: Wed, 09 Jul 2003 06:25:47 -0700
Message-ID: <F001.005C4114.20030709061925@fatcity.com>

This kind of FBI is another way of selectively indexing or indexing a subset of rows by using FBI. Ahh ... the power of NULL value.

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: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] Sent: Wednesday, July 09, 2003 10:05 AM
To: Multiple recipients of list ORACLE-L Subject: Re: RE: [PMX:#] update about 100K records

that is a really good idea. discard my dopey pl/sql post. this one is alot better.

i must have been sniffing glue when i wrote it.
>
> From: "Jamadagni, Rajendra" <[EMAIL PROTECTED]>
> Date: 2003/07/09 Wed AM 09:39:24 EDT
> To: Multiple recipients of list ORACLE-L <[EMAIL PROTECTED]>
> Subject: RE: [PMX:#] update about 100K records
>
> How about creating a function based index on the column ...
>
> function my_func(table_column in number) return number
> is
> begin

>   if table_column = <your_current_value> then
>      return 1
>   else
>      return null;
>   end if;

> end my_func;
> /
>
> Then use this function to create a FBI on the table
> (pk_column, my_func(table_column)
> /
>
> This will give you only those 100000 rows. Then write an update statement
> that will use the FBI in the where clause and you are done.
> After words drop the fbi.
>
> 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 !
>

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Received on Wed Jul 09 2003 - 08:25:47 CDT