Re: [Qgis-user] Detecting Geometry Type For Oracle Object
Hi Simon, On Tue, 31. Jan 2017 at 16:13:47 -0700, Simon Greener wrote: > How does one request this rownum<1000 number to be changed or implemented as > a option? 2.18 doesn't do that anymore with UseEstimatedMetadata and a requested geometry type. It also has some other improvements on detection. Jürgen -- Jürgen E. Fischer norBIT GmbH Tel. +49-4931-918175-31 Dipl.-Inf. (FH) Rheinstraße 13 Fax. +49-4931-918175-50 Software Engineer D-26506 Norden http://www.norbit.de pgps_qORL4DI3.pgp Description: PGP signature ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Detecting Geometry Type For Oracle Object
Jurgen, Thanks again. How does one request this rownum<1000 number to be changed or implemented as a option? After all all the sdo_geometry types I deal with with customers are homogeneous based on polygon, line or point with multi... (Oracle users equate multipolygon with polygons and store them in the same singly inherited sdo_geometry column regardless as to what the OGC Geometry Type object diagram says about inheritance.) Additionally, why is it that even when the value is set in a layer's 's type= attribute eg: dbname='GISDB12' host=localhost port=1522 user='...' password='...' key='FID' estimatedmetadata=true srid=2872 *type=Polygon* table="QGIS"."FOO" (GEOM) sql= QGIS still re-queries the database every time for the geometry type the project is loaded? SELECT DISTINCT gtype FROM (SELECT t."GEOMETRY".sdo_gtype AS gtype FROM ""."" t WHERE t."GEOMETRY" IS NOT NULL AND rownum<1000) WHERE rownum<=2 This re-query slows down project load times especially when one is using QGIS Server. It would be great if one could stop this re-query once the type is set when the original layer is set. After all nearly all layer data for most data sources are of fixed geometry type: Poly, line or point (+ multi). regards SImon -- View this message in context: http://osgeo-org.1560.x6.nabble.com/Detecting-Geometry-Type-For-Oracle-Object-tp5305257p5305639.html Sent from the QGIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Detecting Geometry Type For Oracle Object
Hi Simon, On Sun, 29. Jan 2017 at 22:42:22 -0700, Simon Greener wrote: > QGIS, when querying Oracle to determine the geometry type in a table's > sdo_geometry column executes the following SQL: > > SELECT DISTINCT gtype FROM (SELECT t."GEOMETRY".sdo_gtype AS gtype FROM > ""."" t WHERE t."GEOMETRY" IS NOT NULL AND rownum<1000) > WHERE rownum<=2 > > If there any way that I can force QGIS to change the number it samples? No, that's hardwired - but it's 100 on 2.18 and master. Jürgen -- Jürgen E. Fischer norBIT GmbH Tel. +49-4931-918175-31 Dipl.-Inf. (FH) Rheinstraße 13 Fax. +49-4931-918175-50 Software Engineer D-26506 Norden http://www.norbit.de pgpPMXRuCc5BY.pgp Description: PGP signature ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
