SQL Puzzle: SQL Advance Query – Find the Column name which has all NULL

Check the below input data and expected output to find the name of the column which has all NULL records. Input Data: [crayon-6a9529edf2954944894553/] Expected Output: [crayon-6a9529edf2957009704420/] Create a sample table with data: [crayon-6a9529edf2958062086430/] Solution: [crayon-6a9529edf2959751673612/] Please try the different solution for this puzzle and share it via comment... Reference taken from here: Oct 8, 2017Anvesh […]

October 8, 2017 SQL Puzzle