Should we document risks with column names longer than NAMEDATALEN?

[wolfgangwalther]

See https://github.com/PostgREST/postgrest/issues/1937

[steve-chavez]

Hm, perhaps we should document these limitations in a section under "Administration"?

This reminds me of:

• bigint limitation: https://github.com/PostgREST/postgrest/issues/498
• big json limitation: https://stackoverflow.com/questions/56714274/postgrest-postgresql-cannot-enlarge-string-buffer-message