1interpolate point - basic lineZ
2:memory: #use in-memory database
3SELECT AsText(Line_Interpolate_Point(GeomFromText('LINESTRINGZ(0 0 4, 10 6 14)'), 0.5))
41 # rows (not including the header row)
51 # columns
6AsText(Line_Interpolate_Point(GeomFromText('LINESTRINGZ(0 0 4, 10 6 14)'), 0.5))
7POINT Z(5 3 9)