Bracketed Special Classes « Regular Expressions Functions « Oracle PL/SQL Tutorial






  1. Oracle PL/SQL Tutorial
  2. Regular Expressions Functions
  3. Bracketed Special Classes
18.8.Bracketed Special Classes
18.8.1.Bracketed Classes
18.8.2.[:digit:] matches all numbers.
18.8.3.The bracketed expression [[:digit]] matches numbers
18.8.4.REGEXP_INSTR(value,'[[:digit:]]')
18.8.5.Matching for a non-digit
18.8.6.[:alnum:] matches all numbers and letters (alphanumerics).
18.8.7.[:alpha:] matches characters only.
18.8.8.[:lower:] matches lowercase characters.
18.8.9.[:upper:] matches uppercase characters.








18.8.10.[:space:] matches spaces.
18.8.11.[:punct:] matches punctuation.
18.8.12.[:print:] matches printable characters.
18.8.13.[:cntrl:] matches control characters.
18.8.14.REGEXP_INSTR(value,'[[:lower:]]')