Or if you want a slightly less cryptic solution, use two sort keys:

<xsl:sort select="boolean(pb_number)" order="descending"/>
<xsl:sort select="pb_number" data-type="number"/>

(Note, this works in 1.0 because "false"<"true" compared as strings; it
works in 2.0 because false<true as booleans)

 

> -----Original Message-----
> From: David Carlisle [mailto:davidc@xxxxxxxxx] 
> Sent: 15 August 2005 13:59
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject: Re:  Sort problem
> 
> 
> <xsl:sort select="-(pb_number)"  order="descending" 
> data-type="number"/>
> 
> David
> 
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