[postgis-users] Query to select dangling line segments

[Brian Stempin]

Good catch!  This could have really hurt if I wasn't paying attention.
 Thanks!
Speaking of not paying attention:  it turns out that "~" doesn't work in
this case.  I'm guessing that since the point's BB isn't completely inside
of it's line's BB (they usually share an edge), I end up getting every
single start/end point.  The "&&" operator, however, does work and appears
to speed things up.

Brian
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