Check Password Strength in MySQL with REGEXP
Use MySQL REGEXP to validate password complexity: uppercase, lowercase, digits, special characters. SQL audit query examples.
The Regex Pattern
Regex pattern
^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[@$!%*?&])[A-Za-z\d@$!%*?&]{8,}$Use this pattern with MySQL's REGEXP operator.
MySQL SQL Example
-- Audit a users table in MySQL to find accounts with weak passwords by checking against complexity requirements using REGEXP
SELECT *
FROM your_table
WHERE your_column REGEXP '^(?=.*[a-z])(?=.*[A-Z])(?=.*\\d)(?=.*[@$!%*?&])[A-Za-z\\d@$!%*?&]{8,}$';How This Works
Audit a users table in MySQL to find accounts with weak passwords by checking against complexity requirements using REGEXP. The regex pattern is used with MySQL's REGEXP operator to filter rows at the database level.
Using regex directly in SQL is efficient for use cases like data validation — it avoids loading data into application memory just to filter it with a regex.
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