Contents
How to add a database table to QGIS?
Follow Along: Adding Database Tables to QGIS using the Browser ¶ 1 Start a new empty map in QGIS. 2 Open the Browser by clicking the Browser tab at the bottom of the Layer Panel 3 Open the PostGIS portion of the tree and you should find your previously configured connection available (you may need… More
How to create a SpatiaLite database in QGIS 18.3?
Follow Along: Executing SQL Queries with DB Manager 18.2.5. Importing Data into a Database with DB Manager 18.2.6. Exporting Data from a Database with DB Manager 18.2.7. In Conclusion 18.2.8. What’s Next? 18.3. Lesson: Working with spatialite databases in QGIS 18.3.1. Follow Along: Creating a Spatialite database with the Browser 18.3.2.
How to use the DB Manager interface in QGIS?
You have now seen how to use the DB Manager interface in QGIS to Manage your spatial databases, to execute sql queries against your data and how to import and export data. 18.2.8. What’s Next? ¶
How is QGIS used in PostgreSQL DB2?
QGIS allows you to load spatial and non-spatial layers. tables supported by OGR and delimited text, as well as the PostgreSQL, MSSQL, SpatiaLite, DB2 and Oracle provider. All loaded layers are listed in the Layerspanel. Whether a layer is spatially enabled or not
How to connect to a database using PostGIS?
Of course you can also use this interface to connect to PostGIS databases hosted on a server external to your workstation. Right clicking on the PostGIS entry in the tree will allow you to specify connection paramaters for a new connection. 18.1.2. Follow Along: Adding a filtered set of records as a Layer ¶
How to add PostGIS layers to a map?
Start a new empty map with no layers Click the Add PostGIS Layers button or select Layer –> Add PostGIS Layers from the menu. In the Add PostGIS Table (s) dialog that comes up, connect to the postgis_demo connection. Expand the public schema and you should find the three tables we were working with previously.
How to construct an expression in QGIS browser?
Click the lines layer to select it, but instead of adding it, click the Set Filter button to bring up the Query Builder dialog. Construct the following expression using the buttons or by entering it directly: