Sparql: Arithmetic operators between variables? -

hi have query this:

select ?a ?b { ?c property:name "mything"@en ?c property:firstvalue ?b ?c property:secondvalue ?a } 

how can divide first nuber , second? idealy somthing this:

select ?a/?b { ?c property:name "mything"@en ?c property:firstvalue ?b ?c property:secondvalue ?a } 

thank you

in sparql 1.1 can using project expressions so:

prefix xsd: <http://www.w3.org/2001/xmlschema#> select (xsd:float(?a)/xsd:float(?b) ?result) { ?c property:name "mything"@en ?c property:firstvalue ?b ?c property:secondvalue ?a } 

you may alternately use xsd:double(?var) cast double, xsd:integer(?var) cast integer , xsd:decimal(?var) cast decimal.

note sparql specifies type promotion rules example:

• integer / integer = decimal
• float / double = double

if need result in guaranteed datatype can cast whole divide expression e.g.

prefix xsd: <http://www.w3.org/2001/xmlschema#> select (xsd:double(xsd:float(?a)/xsd:float(?b)) ?result) { ?c property:name "mything"@en ?c property:firstvalue ?b ?c property:secondvalue ?a }