noref.xml

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE Map[
  <!ENTITY db_settings SYSTEM "config/db_settings.inc.xml">
]>
<Map srs="+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgrids=@null +no_defs +over" background-color="transparent" minimum-version="0.7.2">
 <Style name="minor-roads-casing">
    <Rule>
	    <MaxScaleDenominator>200000</MaxScaleDenominator>
	    <LineSymbolizer stroke-linejoin="round" stroke="#0000FF" stroke-width="4" stroke-linecap="round" stroke-opacity="0.4"/></Rule>
</Style>
<Layer name="minor-roads" status="on" srs="+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgrids=@null +no_defs +over">
    <StyleName>minor-roads-casing</StyleName>
    <StyleName>minor-roads-fill</StyleName>
    <StyleName>aerialways</StyleName>
    <Datasource>
	&db_settings;
      <Parameter name="table">
	      (select way from planet_osm_line where (highway='tertiary' or highway='secondary' or  highway = 'primary' or highway = 'motorway') and ref is NULL and not (tags ? 'validate:no_ref') and junction is NULL) as roads
      </Parameter>
    </Datasource>
  </Layer>
</Map>