I have a large table on a (non-spatial) PostgreSQL database which I had created using QGIS to upload the (geometryless) attribute data from a point layer. The database is merely used for data analysis and statistics with Excel and python/matplotlib. (Upgrading the PostgreSQL system to PostGIS is no option)
Later I added a new field (=column) to that layer with further data which I now need to update the table on the database with. I don't want to remove the old database and upload the whole new one as they are really huge and uploading takes a whole day.
Any ideas how to add just the new column data to that table?