<div dir="ltr"><div style>As a quick test, I ran these queries:</div><div style><br></div><div>select sum(st_length(geom)) from res;</div><div>select sum(st_length(geom)) from ways;</div><div><br></div><div style>They gave same length: at least no street was lost during the process</div>
<div style><br></div><div style>Nicolas</div></div>