SUM Of Empty Set Returns WHAT?!
SUM of an empty set or all NULLs returns something unexpected! This breaks all math assumptions. Your mind will explode! Watch now!
#sql #sqltricks #database #sqltutorial #sum #aggregate #sqlquiz #codingchallenge #sqlshorts #sqlbugs #nullhandling #sqlwtf
AVG Ignores NULL Values?!
AVG function silently ignores NULL values! This creates averages that are mathematically wrong. This breaks financial calculations! Watch!
#sql #sqltricks #database #sqltutorial #avg #aggregate #sqlquiz #codingchallenge #sqlshorts #sqlbugs #nullhandling #sqlwtf
MAX - MIN With All NULLs Returns WHAT?!
MAX and MIN with all NULL values return something impossible! These functions are supposed to find extremes but what about NULLs? Watch!
#sql #sqltricks #database #sqltutorial #maxmin #aggregate #sqlquiz #codingchallenge #sqlshorts #sqlbugs #nullhandling #sqlwtf
COALESCE vs NULLIF Trap?!
NULLIF converts values to NULL! COALESCE converts NULL to values. Together they create a transformation chain that will surprise you!
#sql #sqltricks #coalesce #nullif #nullhandling #sqlweird #sqlquiz #codingchallenge #sqlshorts #sqlwtf #nullfunctions #advancedsql
DISTINCT With Multiple NULLs?!
DISTINCT treats all NULLs as the same value! Multiple NULLs become one. This breaks uniqueness logic. Watch the reveal!
#sql #sqltricks #database #sqltutorial #distinct #nullhandling #sqlquiz #codingchallenge #sqlshorts #sqlbugs #setoperations #sqlwtf
UNION Removes NULL Duplicates?!
UNION treats multiple NULLs as duplicates and removes them! This breaks set theory. NULL = NULL in UNION? Watch the chaos!
#sql #sqltricks #database #sqltutorial #union #setoperations #sqlquiz #codingchallenge #sqlshorts #sqlbugs #nullhandling #sqlwtf
String + NULL In SQL Creates WHAT?!
SQL string concatenation with NULL will shock you! Adding NULL to strings creates something you'd NEVER expect. This breaks string logic! Watch!
#sql #sqltricks #database #sqltutorial #stringconcatenation #nullhandling #sqlquiz #codingchallenge #sqlshorts #sqlbugs #databasequeries #sqlwtf
AND/OR With NULL Breaks Logic!
SQL boolean logic with NULL creates chaos! AND/OR operations with NULL give results that make NO sense. This is why queries fail! Watch now!
#sql #sqltricks #database #sqltutorial #booleanlogic #nullhandling #sqlquiz #codingchallenge #sqlshorts #sqlweird #databasequeries #sqlbugs
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