mySQL regex in the where clause

Question

SELECT telephone_number
FROM table
WHERE telephone_number REGEXP \'^1[() -]*999[() -]*999[() -]*9999$\';

how do i make so its valid for any number

Answer 1

Use:

SELECT telephone_number
  FROM table
 WHERE telephone_number REGEXP '^1[() -]*[[:digit:]]{3}[() -]*[[:digit:]]{3}[() -]*[[:digit:]]{4}$';

Reference:

• Pattern Matching