Can I convert a bunch of boolean columns to a single bitmap in PostgreSQL?

Question

I\'d like to convert a query such as:

SELECT BoolA, BoolB, BoolC, BoolD FROM MyTable;

Into a bitmask, where the bits are defined by the val

Answer 1

I came up with this approach as well. It's the most concise I could find short of writing a custom function. I'll accept this answer unless anyone has anything more clever.

SELECT
  (BoolD::int << 0) +
  (BoolC::int << 1) +
  (BoolB::int << 2) +
  (BoolA::int << 3)
from MyTable;