[postgis-users] Correct routing path, segmets of geometry

[paweluz]

Hi!

Thanks a lot to response. But I am i little bit confused. 

This query:

Select astext(ST_LINE_SUBSTRING(
                    ST_LineMerge(the_geom),
                    0,
                   
ST_line_locate_point(st_linemerge(the_geom),PointFromText('POINT(1725231.50130
6788534.90975)'))))

returns Linestring or point. if it returns linestring that means that what
??? For my start and end point it returns the same type of data (there both
point or there are both linestring).I was thinking that the data type would
be different. I am sorry, this may be stupid question but I want to get it
right to make some move... Could you explain it to me... ?? Thanks a lot for
your time ... I really appreciate 

Regards
Paul

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