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xml filter

Posted on 2006-06-26
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Last Modified: 2011-09-20
Hi Experts

 i am new to xml, i am writing the xquery in my project.
this is the one i am using
let $nTitlePath1 := doc(concat( $nFOLDER,"TITLES.xcs"))/TABLES/TITLES/TITLE[@TITLETYPEID =$nTITLETYPEID and @COURSEVERSIONID=$nCOURSEVERSIONID and @TOPIC = "if($nCHAPTERSONLY  = 0) then (@TOPIC) else ($nCHAPTERSONLY)"  and @SUBTOPIC = "if($nCHAPTERSONLY  =  0) then (@SUBTOPIC) else ($nCHAPTERSONLY)"   and @MICROTOPIC ="if($nCHAPTERSONLY  =  0) then (@MICROTOPIC) else ($nCHAPTERSONLY)" ]

here  nCHAPTERSONLY=0,  nCOURSEVERSIONID  = 38
this is returning the empty <ROWS>

can i assign the filte likt this   @TOPIC = "if($nCHAPTERSONLY  = 0) then (@TOPIC) else ($nCHAPTERSONLY)"

this is not returning any value
when i use @TOPIC = @TOPIC it is returning all the values int he file.

please give me the suggestion on this


thanks in adv


regards
karunakar
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Question by:karunakarrreddy
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Accepted Solution

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Geert Bormans earned 20 total points
ID: 16983185
> when i use @TOPIC = @TOPIC it is returning all the values int he file.
of course because the test is always true

> can i assign the filte likt this   @TOPIC = "if($nCHAPTERSONLY  = 0) then (@TOPIC) else ($nCHAPTERSONLY)"
it is not really assign, it is a compare, but you can do it that way

if $nCHAPTERSONLY  = 0 it should be true
note that XQuery is strongly typed and doesn't do autocasting...
you might need if($nCHAPTERSONLY  = xs:string( 0) )

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