ROW_NUMBER() OVER (ORDER BY NULL) Does WHAT?!
ROW_NUMBER with ORDER BY NULL creates non-deterministic ordering! All rows get random numbers. This breaks window functions! Watch!
#sql #sqltricks #database #sqltutorial #rownumber #windowfunctions #sqlquiz #codingchallenge #sqlshorts #sqlbugs #ordering #sqlwtf
RANK vs DENSE_RANK vs ROW_NUMBER?!
Three ranking functions, THREE different behaviors! RANK skips numbers, DENSE_RANK doesn't, ROW_NUMBER always increments. This difference BREAKS logic!
#sql #sqltricks #rank #denserank #rownumber #sqlweird #sqlquiz #codingchallenge #sqlshorts #sqlwtf #rankingfunctions #advancedsql
PrecisionSQL