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<section id="spatialite">
<span id="index-0"></span><span id="sqlite"></span><h1>SpatiaLite<a class="headerlink" href="#spatialite" title="Link to this heading">¶</a></h1>
<p>SpatiaLite spatially enables the file-based SQLite database. For more
information see the SpatiaLite <a class="reference external" href="https://www.gaia-gis.it/fossil/libspatialite/index">description page</a>.</p>
<section id="file-listing">
<h2>File listing<a class="headerlink" href="#file-listing" title="Link to this heading">¶</a></h2>
<p>Similar to other database formats, the <em>.sqlite</em> file (<em>.db</em> is another
common file extension for this) consists of several tables. The
geometry is held in a BLOB table column.</p>
</section>
<section id="data-access-connection-method">
<h2>Data Access / Connection Method<a class="headerlink" href="#data-access-connection-method" title="Link to this heading">¶</a></h2>
<p>Spatialite access is available through OGR. See the OGR <a class="reference external" href="https://gdal.org/drivers/vector/sqlite.html">driver page</a>
for specific driver information. The driver is available in GDAL/OGR
version 1.7.0 or later.</p>
<p>OGR uses the names of spatial tables within the SpatiaLite database
(tables with a geometry column that are registered in the
geometry_columns table) as layers.</p>
<p>The CONNECTION parameter must include the sqlite extension, and the
DATA parameter should be the name of the spatial table (or OGR layer).</p>
<div class="highlight-mapfile notranslate"><div class="highlight"><pre><span></span><span class="k">CONNECTIONTYPE</span> <span class="nb">OGR</span>
<span class="k">CONNECTION</span> <span class="s">"spatialite_db.sqlite"</span>
<span class="k">DATA</span> <span class="s">"layername"</span>
</pre></div>
</div>
</section>
<section id="ogrinfo-examples">
<h2>OGRINFO Examples<a class="headerlink" href="#ogrinfo-examples" title="Link to this heading">¶</a></h2>
<p>First you should make sure that your GDAL/OGR build contains the
spatialite “SQLite” driver, by using the ‘–formats’ command:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="o">></span><span class="n">ogrinfo</span> <span class="o">--</span><span class="n">formats</span>
<span class="n">Loaded</span> <span class="n">OGR</span> <span class="n">Format</span> <span class="n">Drivers</span><span class="p">:</span>
<span class="o">...</span>
<span class="o">-></span> <span class="s2">"GMT"</span> <span class="p">(</span><span class="n">read</span><span class="o">/</span><span class="n">write</span><span class="p">)</span>
<span class="o">-></span> <span class="s2">"SQLite"</span> <span class="p">(</span><span class="n">read</span><span class="o">/</span><span class="n">write</span><span class="p">)</span>
<span class="o">-></span> <span class="s2">"ODBC"</span> <span class="p">(</span><span class="n">read</span><span class="o">/</span><span class="n">write</span><span class="p">)</span>
<span class="o">...</span>
</pre></div>
</div>
<p>If you don’t have the driver, you might want to try the <a class="reference external" href="https://ms4w.com">MS4W</a> or
<a class="reference external" href="https://trac.osgeo.org/osgeo4w/">OSGeo4W</a> packages, which include the driver.</p>
<p>Once you have confirmed that you have the SQLite driver you are ready
to try an ogrinfo command on your database to get a list of spatial
tables:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span>>ogrinfo counties.sqlite
INFO: Open of `counties.sqlite'
using driver `SQLite' successful.
1: mn_counties (Polygon)
</pre></div>
</div>
<p>Now use ogrinfo to get information on the structure of the spatial
table:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span>>ogrinfo counties.sqlite county -summary
INFO: Open of `counties.sqlite'
using driver `SQLite' successful.
Layer name: mn_counties
Geometry: Polygon
Feature Count: 87
Extent: (189783.560000, 4816309.330000) - (761653.524114, 5472346.500000)
Layer SRS WKT:
PROJCS["NAD83 / UTM zone 15N",
GEOGCS["NAD83",
DATUM["North_American_Datum_1983",
SPHEROID["GRS 1980",6378137,298.257222101,
AUTHORITY["EPSG","7019"]],
TOWGS84[0,0,0,0,0,0,0],
AUTHORITY["EPSG","6269"]],
PRIMEM["Greenwich",0,
AUTHORITY["EPSG","8901"]],
UNIT["degree",0.0174532925199433,
AUTHORITY["EPSG","9122"]],
AUTHORITY["EPSG","4269"]],
UNIT["metre",1,
AUTHORITY["EPSG","9001"]],
PROJECTION["Transverse_Mercator"],
PARAMETER["latitude_of_origin",0],
PARAMETER["central_meridian",-93],
PARAMETER["scale_factor",0.9996],
PARAMETER["false_easting",500000],
PARAMETER["false_northing",0],
AUTHORITY["EPSG","26915"],
AXIS["Easting",EAST],
AXIS["Northing",NORTH]]
FID Column = PK_UID
Geometry Column = Geometry
AREA: Real (0.0)
PERIMETER: Real (0.0)
COUNTY_ID: Integer (0.0)
FIPS: String (0.0)
...
</pre></div>
</div>
</section>
<section id="mapfile-example">
<h2>Mapfile Example<a class="headerlink" href="#mapfile-example" title="Link to this heading">¶</a></h2>
<section id="standard-connection">
<h3>Standard connection<a class="headerlink" href="#standard-connection" title="Link to this heading">¶</a></h3>
<div class="highlight-mapfile notranslate"><div class="highlight"><pre><span></span><span class="k">LAYER</span>
<span class="k">NAME</span> <span class="s">"my_counties_layer"</span>
<span class="k">TYPE</span> <span class="nb">POLYGON</span>
<span class="k">CONNECTIONTYPE</span> <span class="nb">ogr</span>
<span class="k">CONNECTION</span> <span class="s">"counties.sqlite"</span>
<span class="k">DATA</span> <span class="s">"mn_counties"</span>
<span class="k">EXTENT</span> <span class="mf">189783.560000</span> <span class="mf">4816309.330000</span> <span class="mf">761653.524114</span> <span class="mf">5472346.500000</span> <span class="c"># for maximum performance</span>
<span class="k">PROCESSING</span> <span class="s">"CLOSE_CONNECTION=DEFER"</span> <span class="c"># for maximum performance</span>
<span class="k">STATUS</span> <span class="nb">ON</span>
<span class="k">CLASS</span>
<span class="k">NAME</span> <span class="s">"mncounties"</span>
<span class="k">STYLE</span>
<span class="k">COLOR</span> <span class="mi">255</span> <span class="mi">255</span> <span class="mi">120</span>
<span class="k">END</span>
<span class="k">END</span>
<span class="k">END</span>
</pre></div>
</div>
</section>
<section id="connection-utilizing-sql-syntax">
<h3>Connection utilizing SQL syntax<a class="headerlink" href="#connection-utilizing-sql-syntax" title="Link to this heading">¶</a></h3>
<div class="highlight-mapfile notranslate"><div class="highlight"><pre><span></span><span class="k">LAYER</span>
<span class="k">NAME</span> <span class="s">"my_counties_layer"</span>
<span class="k">TYPE</span> <span class="nb">POLYGON</span>
<span class="k">CONNECTIONTYPE</span> <span class="nb">OGR</span>
<span class="k">CONNECTION</span> <span class="s">"counties.sqlite"</span>
<span class="k">DATA</span> <span class="s">"select geometry from mn_counties"</span>
<span class="k">PROCESSING</span> <span class="s">"CLOSE_CONNECTION=DEFER"</span> <span class="c"># for maximum performance</span>
<span class="k">STATUS</span> <span class="nb">ON</span>
<span class="k">CLASS</span>
<span class="k">NAME</span> <span class="s">"mncounties"</span>
<span class="k">STYLE</span>
<span class="k">COLOR</span> <span class="mi">255</span> <span class="mi">255</span> <span class="mi">120</span>
<span class="k">END</span>
<span class="k">END</span>
<span class="k">END</span>
</pre></div>
</div>
</section>
<section id="connection-utilizing-joined-table-for-additional-attributes">
<h3>Connection utilizing joined table for additional attributes<a class="headerlink" href="#connection-utilizing-joined-table-for-additional-attributes" title="Link to this heading">¶</a></h3>
<div class="highlight-mapfile notranslate"><div class="highlight"><pre><span></span><span class="k">LAYER</span>
<span class="k">NAME</span> <span class="s">"my_counties_layer"</span>
<span class="k">TYPE</span> <span class="nb">POLYGON</span>
<span class="k">CONNECTIONTYPE</span> <span class="nb">OGR</span>
<span class="k">CONNECTION</span> <span class="s">"counties.sqlite"</span>
<span class="k">DATA</span> <span class="s">"SELECT mn.geometry, c.fips FROM mn_counties mn inner</span>
<span class="k">join</span> <span class="err">county_</span><span class="k">data</span> <span class="err">c</span> <span class="nb">on</span> <span class="err">mn</span><span class="p">.</span><span class="err">county_id</span> <span class="o">=</span> <span class="err">c</span><span class="p">.</span><span class="err">county_id</span><span class="s">'</span>
<span class="k">PROCESSING</span> <span class="s">"CLOSE_CONNECTION=DEFER"</span> <span class="c"># for maximum performance</span>
<span class="k">STATUS</span> <span class="nb">ON</span>
<span class="k">CLASS</span>
<span class="k">NAME</span> <span class="s">"mncounties"</span>
<span class="k">STYLE</span>
<span class="k">COLOR</span> <span class="mi">255</span> <span class="mi">255</span> <span class="mi">120</span>
<span class="k">END</span>
<span class="k">END</span>
<span class="k">END</span>
</pre></div>
</div>
</section>
<section id="standard-connection-with-a-filter">
<h3>Standard Connection with a filter<a class="headerlink" href="#standard-connection-with-a-filter" title="Link to this heading">¶</a></h3>
<div class="highlight-mapfile notranslate"><div class="highlight"><pre><span></span><span class="k">LAYER</span>
<span class="k">NAME</span> <span class="s">"my_counties_layer"</span>
<span class="k">TYPE</span> <span class="nb">POLYGON</span>
<span class="k">CONNECTIONTYPE</span> <span class="nb">OGR</span>
<span class="k">CONNECTION</span> <span class="s">"counties.sqlite"</span>
<span class="k">DATA</span> <span class="s">"mn_counties"</span>
<span class="k">FILTER</span> <span class="p">(</span><span class="s">'[fips]'</span> <span class="o">=</span> <span class="s">'27031'</span><span class="p">)</span>
<span class="k">PROCESSING</span> <span class="s">"CLOSE_CONNECTION=DEFER"</span> <span class="c"># for maximum performance</span>
<span class="k">STATUS</span> <span class="nb">ON</span>
<span class="k">CLASS</span>
<span class="k">NAME</span> <span class="s">"mncounties"</span>
<span class="k">STYLE</span>
<span class="k">COLOR</span> <span class="mi">255</span> <span class="mi">255</span> <span class="mi">120</span>
<span class="k">END</span>
<span class="k">END</span>
<span class="k">END</span>
</pre></div>
</div>
</section>
<section id="filter-utilizing-sql-syntax">
<h3>Filter utilizing SQL syntax<a class="headerlink" href="#filter-utilizing-sql-syntax" title="Link to this heading">¶</a></h3>
<div class="highlight-mapfile notranslate"><div class="highlight"><pre><span></span><span class="k">LAYER</span>
<span class="k">NAME</span> <span class="s">"my_counties_layer"</span>
<span class="k">TYPE</span> <span class="nb">POLYGON</span>
<span class="k">CONNECTIONTYPE</span> <span class="nb">OGR</span>
<span class="k">CONNECTION</span> <span class="s">"counties.sqlite"</span>
<span class="k">DATA</span> <span class="s">"select geometry from mn_counties where fips = '27031"</span>
<span class="k">PROCESSING</span> <span class="s">"CLOSE_CONNECTION=DEFER"</span> <span class="c"># for maximum performance</span>
<span class="k">STATUS</span> <span class="nb">ON</span>
<span class="k">CLASS</span>
<span class="k">NAME</span> <span class="s">"mncounties"</span>
<span class="k">STYLE</span>
<span class="k">COLOR</span> <span class="mi">255</span> <span class="mi">255</span> <span class="mi">120</span>
<span class="k">END</span>
<span class="k">END</span>
<span class="k">END</span>
</pre></div>
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