I'm not a DBA but seem to recall that there was a SQL database that stored column labels (preferred column headings that can be printed on reports). Does Postgres support labels such as these?
No. (You may be thinking of MS Access.)
But you can easily substitute with a
You might be refereing to catalog level comments, which can be used to get a description of any table and or column in the database.
Those are created using:
To query those, you can use this kind of query:
Beware however that this cannot be localized.