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Jubilee E.O. Amechi's avatar

This was such an insightful read! The breakdown of IS NULL vs. = NULL really cleared up some common misconceptions, and the distinction between COUNT(*) and COUNT(column_name) was a great refresher. Also, the reminder about using the right order with UNION ALL is something every SQL user needs to keep in mind. Thanks for sharing these sneaky traps, we definitely need to watch out for them!

Andres Vourakis's avatar

Glad to hear Jubilee! These mistakes have cost me unnecessary time and effort.

Sushant Garudkar's avatar

Great insights!

Andres Vourakis's avatar

Glad you found it valuable Sushant!

Ame_data scientist's avatar

the fear of wildcard is the beginning of SQL wisdom. 🏃🏾‍♀️