Re: select with Null

From: <Marcos.Vera_at_msconsultores.com.pe>
Date: Wed, 22 Nov 2000 13:17:02 -0500
Message-Id: <10688.122745@fatcity.com>

select d.discount_type

   from discount d
 where (NVL(d.company_code,'XX') = 'XX')

     and (NVL(d.operator_code,'YY') = 'YY')

Raj Gopalan <raj.gopalan_at_netdecisions.co.uk> on 22/11/2000 12:35:24 PM

Please respond to ORACLE-L_at_fatcity.com

                                                                                
                                                                                
                                                                                


                                                              
                                                              
                                                              
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 Subject: select with Null                                    
                                                              

Hello list,

I have a query

select d.discount_type

   from discount d
 where (d.company_code = 'XX' or

            d.company_code is null)
     and (d.operator_code = 'YY' or
             d.operator_code is null)

Apparently, oracle is not using the index since I am using IS NULL. But the functional requirement is such that the query need to consider records even if company_code, Operator_code ,... is null.

Any thoughts on how do I modify this query so that the index is being used.

TIA Raj
--

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--

Author: Raj Gopalan
  INET: raj.gopalan_at_netdecisions.co.uk

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