PHP Null Coalescing Operator Secret
Stop scrolling! PHP ?? operator has a hidden trick. Watch null ?? 'default' ?? 'fallback'. The result will surprise you!
#php #phptricks #codingtips #programmingtutorial #phpnullcoalescing #phpoperators #nullhandling #phpquiz #codingchallenge #phpshorts #php7
GROUP BY NULLs Are Treated As ONE?!
GROUP BY treats all NULLs as the same group! Multiple NULL rows get grouped together. This breaks grouping logic! Watch now!
#sql #sqltricks #database #sqltutorial #groupby #nullhandling #sqlquiz #codingchallenge #sqlshorts #sqlbugs #grouping #sqlwtf
COALESCE(NULL, NULL, NULL) Returns WHAT?!
COALESCE with all NULLs returns something that defies logic! This function is supposed to return first non-NULL but what if all are NULL? Watch!
#sql #sqltricks #database #sqltutorial #coalesce #nullhandling #sqlquiz #codingchallenge #sqlshorts #sqlbugs #nullfunctions #sqlwtf
EXISTS vs IN With NULL Breaks Logic!
EXISTS and IN behave completely differently with NULL! One works, one doesn't. This breaks subquery logic! Watch the chaos!
#sql #sqltricks #database #sqltutorial #existsin #subqueries #sqlquiz #codingchallenge #sqlshorts #sqlbugs #nullhandling #sqlwtf
NULLIF and COALESCE Chain?!
NULLIF and COALESCE can be CHAINED! NULLIF converts to NULL, COALESCE converts from NULL. This transformation chain will surprise you!
#sql #sqltricks #nullif #coalesce #functionchaining #sqlweird #sqlquiz #codingchallenge #sqlshorts #sqlwtf #nullhandling #advancedsql
NULLIF(5, 5) Returns NULL?!
NULLIF with same values returns NULL instead of the value! This function behavior will break your brain. Watch the reveal!
#sql #sqltricks #database #sqltutorial #nullif #nullhandling #sqlquiz #codingchallenge #sqlshorts #sqlbugs #nullfunctions #sqlwtf
ORDER BY NULLs Go WHERE?!
ORDER BY with NULLs creates chaos! NULLs can go first or last depending on database. This breaks sorting logic! Watch!
#sql #sqltricks #database #sqltutorial #orderby #nullhandling #sqlquiz #codingchallenge #sqlshorts #sqlbugs #sorting #sqlwtf
EXISTS vs IN with NULLs?!
EXISTS and IN handle NULLs DIFFERENTLY! IN returns NULL when NULL is in the list, EXISTS doesn't. This NULL behavior will cause bugs!
#sql #sqltricks #exists #in #nullhandling #sqlweird #sqlquiz #codingchallenge #sqlshorts #sqlwtf #subqueries #advancedsql
Null Coalescing: Python's 'or' GOTCHA vs PHP's ??
Python's 'or' operator has a TRAP! PHP's ?? is safer! See why 0 and empty string break Python's approach. Mind = BLOWN!
#python #php #pythonvsphp #nullcoalescing #defaultvalues #nullhandling #codecomparison #programmingcomparison #pythongotchas #phptricks #programmingdebate #codingtips #pythonoroperator #phpnullcoalescing #bestpractices
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
