MySQL: Find all non-alphanumeric rows

What?
Quick note on how to do this.

I was tasked with cleaning up an english database by replacing all special alphabets (ë to e) and non-alphanumeric symbols with URL friendly characters.

How?
copyraw
-- return all records that contain non-alphanumeric characters
SELECT * FROM myTable WHERE myColumn NOT REGEXP '^[A-Za-z0-9]+$';

-- return all records that are non-alphanumeric but ignore underscores
SELECT * FROM myTable WHERE myColumn NOT REGEXP '^[A-Za-z0-9\\_]+$';
  1.  -- return all records that contain non-alphanumeric characters 
  2.  SELECT * FROM myTable WHERE myColumn NOT REGEXP '^[A-Za-z0-9]+$'
  3.   
  4.  -- return all records that are non-alphanumeric but ignore underscores 
  5.  SELECT * FROM myTable WHERE myColumn NOT REGEXP '^[A-Za-z0-9\\_]+$'
Category: MySQL :: Article: 521

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