Hi list,
trying to manage a vector attribute table, I explored the sqlbuilder
menu (py gui, grass64, quite a bit old svn version -- say 2 months).
My query contains a modulus condition, so I guess I can use the "%"
button, but the query is qualified unvalid.
e.g I need to extract "z" value every 100 m from a contour line "topo"
vector map.
This statement :
SELECT z FROM topo WHERE z % 100 = 0
returns this error message :
SQL statement is not valid.
dbmi: Protocol error
Any idea of what I am doing wrong ?
Thank you,
Vincent.
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