CHAR vs VARCHAR Comparison Returns ZERO Rows?!
STRING COMPARISON IS BROKEN! CHAR pads with spaces, VARCHAR doesn't! 'test' does NOT equal 'test '! Your WHERE clause returns ZERO rows! This breaks string matching! Watch!
#sql #sqlbug #char #varchar #trailingspaces #comparisonfails #sqlfails #productionbug #sqlshorts #sqlwtf #stringcomparison #padding
TRUNCATE Can't Be Rolled Back?!
Your brain will EXPLODE! TRUNCATE looks safe but ROLLBACK won't save you! Data is PERMANENTLY DELETED even in a transaction! This broke a production database! Watch the horror!
#sql #sqldisaster #truncate #rollback #transaction #productionbug #sqlfails #dataloss #sqlshorts #databasedisaster #sqlwtf #permanentdelete
UTF8MB4 Emoji Support EXPLODES Table From 500GB to 2TB?!
CHARACTER SET BOMB! Changed to utf8mb4 for emoji support! Table size EXPLODES 4x overnight! 500GB becomes 2.1TB! Disk fills up during ALTER! Database goes READ-ONLY! Watch this explosion!
#sql #sqldisaster #utf8mb4 #emoji #storageexplosion #altertable #sqlfails #diskfull #sqlshorts #databasedisaster #sqlwtf #characterset
Index On NULL Column Does NOTHING?!
Your performance just DIED! Created an index but queries with NULL are still slow? Indexes IGNORE NULL values! Full table scan on millions of rows! Your index is USELESS! Watch the disaster!
#sql #sqlperformance #index #null #fulltablescan #slowquery #sqlfails #productionbug #sqlshorts #databasedisaster #sqlwtf #indextrap
UPDATE With JOIN Corrupts Your Data?!
DATA CORRUPTION ALERT! UPDATE with JOIN can update the SAME row MULTIPLE times! $100 product gets THREE discounts applied = $51! Your prices are WRONG! Watch this disaster!
#sql #sqldisaster #update #join #datacorruption #productionbug #sqlfails #multipleupdates #sqlshorts #databasedisaster #sqlwtf #updatechaos
Auto-Increment IDs Have GAPS Forever?!
IDs are BROKEN! Failed INSERT consumes the auto-increment ID! User #1, skip #2, User #3! Your IDs have permanent GAPS! This breaks ID-based logic! Watch this chaos!
#sql #sqlbug #autoincrement #primarykey #idgaps #failedinsert #sqlfails #productionbug #sqlshorts #sqlwtf #identitycolumn #dataintegrity
DateTime Timezone Shift Costs $2.3M In Missed Flights?!
TIMEZONE APOCALYPSE! Flight times stored WITHOUT timezone! UTC 14:00 displays as 2 PM but IS 11 AM local! 470 passengers MISSED flights in ONE day! Airlines lost $2.3M! Watch this disaster!
#sql #sqldisaster #timezone #datetime #productionbug #dataloss #sqlfails #airlinedisaster #sqlshorts #databasedisaster #sqlwtf #timestamphell
ALTER TABLE Auto-Commits Your Transaction?!
This will DESTROY your confidence! Running ALTER TABLE inside a transaction AUTO-COMMITS everything! Your unsaved work gets COMMITTED permanently! This breaks transaction logic! Watch now!
#sql #sqldisaster #altertable #autocommit #transaction #ddl #sqlfails #productionbug #sqlshorts #databasedisaster #sqlwtf #implicitcommit
SQL Injection In ORDER BY Drops Your Table?!
SECURITY NIGHTMARE! Everyone secures WHERE clause but ORDER BY is VULNERABLE! User input in ORDER BY can DROP TABLES! Even prepared statements won't save you! Watch this attack!
#sql #sqlinjection #security #orderby #droptable #sqlvulnerability #sqlfails #productionbug #sqlshorts #databasedisaster #sqlwtf #injectionattack
