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Merging Tables and Dropping Geometry

Maintenance, Reinstatement and Special Designation can have different geometry (point, line or area) or no geometry. In a non-spatial database this is not a problem and they can easily be merged into one. A spatial database will not allow mixed geometry types. It is suggested to create a new table, dropping the geometry. Link to geometry can then be preserved if required.

What You Will Need

Data

RAMI Specification
Maintenance
Reinstatement
Special Designation

Software

Translation software is required to convert data from GML into chosen format. FME workbenches are available on GitHub to help with this.
Data storage – once translated the data will need to be stored in a format compatible with your systems, this may be on your file system as a shape file, geopackage or tab file or in a database.
GIS or web application to manipulate and display your results.

Steps to Success: Merging Tables and Dropping Geometry

Create table statement with UNION ALL:

Merging Tables and Dropping Geometry

What You Will Need

Data

RAMI Specification
Maintenance
Reinstatement
Special Designation

Software

Translation software is required to convert data from GML into chosen format. FME workbenches are available on GitHub to help with this.
Data storage – once translated the data will need to be stored in a format compatible with your systems, this may be on your file system as a shape file, geopackage or tab file or in a database.
GIS or web application to manipulate and display your results.

Steps to Success: Merging Tables and Dropping Geometry

Create table statement with UNION ALL:

CREATE TABLE highways_nov.maintenance AS
SELECT id, maintenanceresponsibility, partialreference, highwayauthorityname, highwayauthorityid, maintenanceauthorityname, maintenanceauthorityid, referencetostreetusrn, locationdescription FROM highways_nov.maintenance_line
UNION ALL
SELECT id, maintenanceresponsibility, partialreference, highwayauthorityname, highwayauthorityid, maintenanceauthorityname, maintenanceauthorityid, referencetostreetusrn, locationdescription FROM highways_nov.maintenance_area
UNION ALL
SELECT id, maintenanceresponsibility, partialreference, highwayauthorityname, highwayauthorityid, maintenanceauthorityname, maintenanceauthorityid, referencetostreetusrn, locationdescription FROM highways_nov.maintenance_point
UNION ALL
SELECT id, maintenanceresponsibility, partialreference, highwayauthorityname, highwayauthorityid, maintenanceauthorityname, maintenanceauthorityid, referencetostreetusrn, locationdescription FROM highways_nov.maintenance_nogeom