Must DO - SQL Interview Query | Forward Fill Values for NULL Records | Last Not NULL puzzle | FAANG
19:12
SQL tricky Complex Query | (Reset Running Total When negative) / (Reset based on column value)
53:00
SQL NULL Functions | COALESCE, ISNULL, NULLIF, IS (NOT) NULL | #SQL Course 18
52:42
Learn & Practice SQL Complex Queries | 10 examples (Must DO for Interviews)
26:09
SQL Query | How to find 'n' consecutive days EXCLUDING Weekends | LAG | Windows function | streaks
25:27