<blockquote>
<p>PS: not sure if this is the right place to post this kind of issue, sorry if mistaken.</p>
</blockquote>
<p>No.</p>
<p>If you're using osm2pgsql, see <a href="https://github.com/openstreetmap/osm2pgsql">https://github.com/openstreetmap/osm2pgsql</a>, that handles conversions from OSM data into PostGIS geometries. Before reporting an issue, be sure to make sure you're on a recent version and you can provide a test which exhibits the problem.</p>
<p>If you're reporting an issue with a style, see the issue tracker for that style. You should be aware that most styles do nothing with multipolygons, but have them instead handled by whatever imports the data into a DB.</p>
<p style="font-size:small;-webkit-text-size-adjust:none;color:#666;">—<br>Reply to this email directly or <a href="https://github.com/openstreetmap/mod_tile/issues/117#issuecomment-158918204">view it on GitHub</a>.<img alt="" height="1" src="https://github.com/notifications/beacon/AD2-7o-JaMZkJa38o5hedBf8gnrHsaraks5pIvx3gaJpZM4GneET.gif" width="1" /></p>
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