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Re:New In Postgres 12: Generated Columns by DougBTX on Wednesday October 02, 2019 @07:48AM (#21135386)
Any DB that requires moving large amounts of data on disk to do a column rename sounds pretty lame.

I’d expect most DBs to be like this: https://dba.stackexchange.com/questions/189794/performance-i...

A rename should be just a metadata change.

Re:New In Postgres 12: Generated Columns by SigmundA on Wednesday October 02, 2019 @12:56PM (#21138520)
unless your using jsonb to store data ;)