regexp_like(string, pattern)

Query 1

presto:default> SELECT regexp_like('1a 2b 3c 6f', '\d+c') as expression; 

Result

 expression 
------------ 
   true

Here, the digit 3 has character c, hence the result is true.

Query 2

presto:default> SELECT regexp_like('1a 2b 3c 6f', '\d+e') as expression; 

Result

 expression 
------------ 
   false 

Here, the character e is not in the regular expression.