ElmerWallace

5 ms·

1. 1.▲
   Show HN: TrueQR – QR codes that don't expire, because static codes never could(trueqr.co)

   3 points by ElmerWallace 3mo ago|1 comments
2. 2.▲
   by ElmerWallace 3mo ago

   The FK piece is what I'm most excited about. PRIMARY KEY WITHOUT OVERLAPS plus FOREIGN KEY ... PERIOD means a child row's range is enforced to stay inside an actual parent version, no triggers or sprocs needed. Not free (GiST look