# Pattern-matching conditions
<a name="sql-contitions-pattern-matching-spark"></a>

A pattern-matching operator searches a string for a pattern specified in the conditional expression and returns true or false depending on whether it finds a match. AWS Clean Rooms Spark SQL uses the following methods for pattern matching: 
+ LIKE expressions

  The LIKE operator compares a string expression, such as a column name, with a pattern that uses the wildcard characters `%` (percent) and `_` (underscore). LIKE pattern matching always covers the entire string. LIKE performs a case-sensitive match. 

**Topics**
+ [LIKE](patternmatching_condition_like.md)
+ [RLIKE](RLIKE.md)