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<p class="MsoNormal">For clarity, the input datasource to THIS method is a memory datasource. But the source of that datasource was a geopackage (via CopyDataSource).<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Best,<o:p></o:p></p>
<p class="MsoNormal">Jesse<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b><span style="font-size:12.0pt;color:black;mso-ligatures:none">From:
</span></b><span style="font-size:12.0pt;color:black;mso-ligatures:none">gdal-dev <gdal-dev-bounces@lists.osgeo.org> on behalf of "Meyer, Jesse R. (GSFC-618.0)[SCIENCE SYSTEMS AND APPLICATIONS INC] via gdal-dev" <gdal-dev@lists.osgeo.org><br>
<b>Reply-To: </b>"Meyer, Jesse R. (GSFC-618.0)[SCIENCE SYSTEMS AND APPLICATIONS INC]" <jesse.r.meyer@nasa.gov><br>
<b>Date: </b>Monday, August 21, 2023 at 3:30 PM<br>
<b>To: </b>"gdal-dev@lists.osgeo.org" <gdal-dev@lists.osgeo.org><br>
<b>Subject: </b>[EXTERNAL] [BULK] [gdal-dev] Is SQLITE dialect supported on Memory OGR datasets?<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="mso-ligatures:none"><o:p> </o:p></span></p>
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<p class="MsoNormal">Hi,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">This works:<o:p></o:p></p>
<p class="MsoNormal" style="line-height:13.5pt;background:#2D2A2E"><span style="font-size:9.0pt;font-family:Menlo;color:#FCFCFA;mso-ligatures:none">tc_lyr
</span><span style="font-size:9.0pt;font-family:Menlo;color:#FF6188;mso-ligatures:none">=</span><span style="font-size:9.0pt;font-family:Menlo;color:#FCFCFA;mso-ligatures:none">
</span><span style="font-size:9.0pt;font-family:Menlo;color:#A9DC76;mso-ligatures:none">execute_SQL</span><span style="font-size:9.0pt;font-family:Menlo;color:#939293;mso-ligatures:none">(</span><span style="font-size:9.0pt;font-family:Menlo;color:#FCFCFA;mso-ligatures:none">tree_canopy_mem_ds</span><span style="font-size:9.0pt;font-family:Menlo;color:#939293;mso-ligatures:none">,</span><span style="font-size:9.0pt;font-family:Menlo;color:#FCFCFA;mso-ligatures:none">
</span><span style="font-size:9.0pt;font-family:Menlo;color:#939293;mso-ligatures:none">"</span><span style="font-size:9.0pt;font-family:Menlo;color:#FFD866;mso-ligatures:none">select * from trees</span><span style="font-size:9.0pt;font-family:Menlo;color:#939293;mso-ligatures:none">",</span><span style="font-size:9.0pt;font-family:Menlo;color:#FCFCFA;mso-ligatures:none">
</span><i><span style="font-size:9.0pt;font-family:Menlo;color:#FC9867;mso-ligatures:none">spatialFilter</span></i><span style="font-size:9.0pt;font-family:Menlo;color:#FF6188;mso-ligatures:none">=</span><span style="font-size:9.0pt;font-family:Menlo;color:#FCFCFA;mso-ligatures:none">c_geo)<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">However, this:<o:p></o:p></p>
<p class="MsoNormal" style="line-height:13.5pt;background:#2D2A2E"><span style="font-size:9.0pt;font-family:Menlo;color:#FCFCFA;mso-ligatures:none">tc_lyr
</span><span style="font-size:9.0pt;font-family:Menlo;color:#FF6188;mso-ligatures:none">=</span><span style="font-size:9.0pt;font-family:Menlo;color:#FCFCFA;mso-ligatures:none">
</span><span style="font-size:9.0pt;font-family:Menlo;color:#A9DC76;mso-ligatures:none">execute_SQL</span><span style="font-size:9.0pt;font-family:Menlo;color:#939293;mso-ligatures:none">(</span><span style="font-size:9.0pt;font-family:Menlo;color:#FCFCFA;mso-ligatures:none">tree_canopy_mem_ds</span><span style="font-size:9.0pt;font-family:Menlo;color:#939293;mso-ligatures:none">,</span><span style="font-size:9.0pt;font-family:Menlo;color:#FCFCFA;mso-ligatures:none">
</span><span style="font-size:9.0pt;font-family:Menlo;color:#939293;mso-ligatures:none">"</span><span style="font-size:9.0pt;font-family:Menlo;color:#FFD866;mso-ligatures:none">select * from trees</span><span style="font-size:9.0pt;font-family:Menlo;color:#939293;mso-ligatures:none">",</span><span style="font-size:9.0pt;font-family:Menlo;color:#FCFCFA;mso-ligatures:none">
</span><i><span style="font-size:9.0pt;font-family:Menlo;color:#FC9867;mso-ligatures:none">spatialFilter</span></i><span style="font-size:9.0pt;font-family:Menlo;color:#FF6188;mso-ligatures:none">=</span><span style="font-size:9.0pt;font-family:Menlo;color:#FCFCFA;mso-ligatures:none">c_geo</span><span style="font-size:9.0pt;font-family:Menlo;color:#939293;mso-ligatures:none">,</span><span style="font-size:9.0pt;font-family:Menlo;color:#FCFCFA;mso-ligatures:none">
</span><i><span style="font-size:9.0pt;font-family:Menlo;color:#FC9867;mso-ligatures:none">dialect</span></i><span style="font-size:9.0pt;font-family:Menlo;color:#FF6188;mso-ligatures:none">=</span><span style="font-size:9.0pt;font-family:Menlo;color:#939293;mso-ligatures:none">"</span><span style="font-size:9.0pt;font-family:Menlo;color:#FFD866;mso-ligatures:none">SQLITE</span><span style="font-size:9.0pt;font-family:Menlo;color:#939293;mso-ligatures:none">")</span><span style="font-size:9.0pt;font-family:Menlo;color:#FCFCFA;mso-ligatures:none"><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Returns:<o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Monaco;color:#FCFCFA;background:#403E41">In Initialize(): sqlite3_step(SELECT _rowid_, * FROM 'trees' LIMIT 1): SQL logic error<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:Monaco;color:#FCFCFA;background:#403E41"><o:p> </o:p></span></p>
<p class="MsoNormal">Where execute_SQL = ogr.DataSource.ExecuteSQL<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Which is naturally a surprise given that I’m not explicitly asking for the rowid, nor to limit the number of returned rows.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The docs claim that the SQLite dialect can be used with any OGR datasource, so I did expect this to work. The input datasource is GeoPackage, which is based on SQLite, so I assume my install is built with SQLite, though I’d welcome advice
on how to explicitly demonstrate this. <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">My GDAL version install is 3.6.4, on OSX 13.5.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks,<o:p></o:p></p>
<p class="MsoNormal">Jesse<o:p></o:p></p>
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