Small thing. Useful thing. I didn’t know that TRIM in SQL can remove specific characters — not only spaces. Example TRIM ( '.,! ' FROM '# test .' ) What It Does This removes any of the following characters from both sides of the string: Dot . Comma , Exclamation mark ! Space The result: '# test' Why It’s Useful Cleaning imported data Sanitizing user input Preparing text before comparison Normalizing values for indexing Short. Simple. Powerful.