Also, combine some keywords that can only occur together.
And drop a few that are probably rare, like LARGE OBJECT.
Reference:
https://www.postgresql.org/docs/14/bookindex.html
And use a more readable color -- blue is too dark on a black base.
Regular expressions in SQL are not written between // or %r{},
strings are not written between <> or %Q{} or anything similar,
and comments do not start with # -- and officially not with //
either, but some dialects seem to allow it.
This fixes https://savannah.gnu.org/bugs/?61381.
Bug existed since version 2.4.2, since the SQL syntax was included.