Tips n’ tricks – rank on changes

I got asked this: having this table: # SELECT * FROM a ORDER BY d; t | d ---+---- O | 1 O | 2 O | 3 M | 4 M | 5 M | 6 M | 7 O | 8 O | 9 O | 10 I | 11 I | 12 … Continue reading "Tips n’ tricks – rank on changes"