How to filter the feature based on it's attribute?

[Lê Viết Thanh]

Hi all,
I have a shapefile with an attribute field used to classified the feature.
It's value for each record like as "234,234,245,267,234" (delimited by
comma  and without double quote, field type are string). I just want to call
the feature with value 234, so how do i?
Thanks in advance.
-- 
Best regards,

Le Viet Thanh
GIS Technician - GIS Team
__________________________________
Vietnam - Denmark VIDAGIS CO., LTD
5 Lang Ha Str, Hanoi, Vietnam
Tel: +84 4 5145570  Fax: +84 4 5145571
http://www.vidagis.com
Direct: thanhlv at vidagis.com      +84 984 468147
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