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From "Ganesh" <>
Subject Re: Optimum way to find all document without particular field
Date Wed, 04 Mar 2009 06:35:57 GMT

I don't think, Lucene could filter out Null and Not null values.

In case if the field value is Null, index the field with value <<NULL>>. To 
find all the documents which the field is not null,  Search the field, which 
does not contain the value <<NULL>>.


----- Original Message ----- 
From: "Allahbaksh Mohammedali Asadullah" <>
To: <>
Sent: Wednesday, March 04, 2009 11:12 AM
Subject: Optimum way to find all document without particular field

What is the optimum way in which I can find all the document which has 
particular field in it.

I want to find all the document in which the field text is not null.


Allahbaksh Mohammedali Asadullah,
Software Engineering & Technology Labs,
Infosys Technolgies Limited, Electronics City,
Hosur Road, Bangalore 560 100, India.
*Board: +91-80-28520261 | Extn: 53915 | Direct: 41173915.
Fax: +91-80-28520362 | Mobile: +91-9845505322.

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