How to transfer xml to code by xslt?

["LUKE" <luke@tc.program.com.tw>]

XML Document:

 

<logic>
if ($a==1){
<execute-query>
<![CDATA[
SELECT * FROM address WHERE id =$CGI_paraname
]]>
</execute-query>
}else{
<execute-query>
<![CDATA[
SELECT * FROM address2 WHERE id =$CGI_paraname
]]>
</execute-query>
}
</logic>

I want to transfer to using *.xsl.

 

if ($a==1){
$sql='SELECT * FROM address WHERE id =$CGI_paraname';
}else{
$sql='SELECT * FROM address2 WHERE id =$CGI_paraname';
}