Re: unable to resolve intersect/union operator

  > A/Value[for $a in . return /Parts/B/Value[contains(.,$a)]]


  What does $a contain ? Is it the all the A/Value which appear as the 
  child of A or something else?


No it just contains the single node . which is the current Value node

for $a in . return something

is the XPath spelling of the Xquery expression

let $a := . return something

or the XSLT code

<xsl:variable name="a" select="."/>
<xsl:sequence select="something"/>


David

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