SQL Tricky Interview Questions Handling NULL Values with Count
#sqlinterviewquestions
Join this channel to get access to perks:
/ @harithacomputerstechnology
SQL Tricky Interview Questions Handling NULL Values with Count
In SQL interviews, questions often arise regarding handling NULL values with COUNT function. Candidates should understand that COUNT function excludes NULL values unless explicitly specified to include them with COUNT(*). When COUNT(column_name) is used, it counts only non-NULL values within that column. If handling NULLs is necessary, candidates might utilize CASE statements or IS NULL/IS NOT NULL conditions to manage NULL values appropriately. This understanding demonstrates a fundamental grasp of SQL querying and handling NULLs efficiently during data analysis or reporting tasks.
Watch video SQL Tricky Interview Questions Handling NULL Values with Count online without registration, duration hours minute second in high quality. This video was added by user Haritha Computers & Technology 06 April 2024, don't forget to share it with your friends and acquaintances, it has been viewed on our site 4,198 once and liked it 205 people.