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physikerwelt/sinx2.xq

Created February 27, 2014 15:51
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sinx2.xq
xquery declare default element namespace "http://www.w3.org/1998/Math/MathML";
for $m in db2-fn:xmlcolumn("math.math_mathml") return
for $x in $m//*:apply
[*[1]/name() ='sin'
and *[2]/name() ='apply'
and *[2][*[1]/name() ='csymbol'
and *[1][./text() = 'superscript']
and *[3]/name() ='cn'
and *[3][./text() = '2']]]
where
fn:count($x/*[2]/*[1]/*) = 0
and fn:count($x/*[2]/*[3]/*) = 0
and fn:count($x/*[2]/*) = 3
and fn:count($x/*) = 2
return
data($m/*[1]/@alttext)
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