[QGIS-Developer] Generated columns in PostgreSQL 12

[Andreas Neumann]

Hi, 

Here is a quite interesting new feature in PostgreSQL 12: 

https://www.2ndquadrant.com/en/blog/generated-columns-in-postgresql-12/ 

It is similar to virtual columns in QGIS. 

I suspect that users will want to use that new column type. What does
this mean for QGIS? I guess QGIS will have to detect this new column
type in the future and mark it as "immutable". So other columns are
read/write, but generated columns will be read only. Does QGIS already
support a concept like this where some columns are read/write and others
not? 

Greetings, 

Andreas
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