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It compares the given pattern in the input string and returns the result. The syntax for the REGEXP_LIKE(column_name, 'regex') function can be as follows: SELECT FROM table WHERE REGEXP_LIKE (table. NOT REGEXP in MySQL is a negation of the REGEXP operator used for pattern matching. '$' represents the end of the regular expression.This renders reading on unnecessary unless you're constrained to using an earlier version. UPDATE: A useful set of regex functions including REGEXPREPLACE have now been provided in MySQL 8.0. '^' represents the starting of the regular expression But despite having a competent regular expression engine, MySQL doesn't provide a built-in regular expression replace function.Some of the commonly used characters in MySQL for regular expression are as follows: This Oracle tutorial explains how to use the Oracle REGEXPLIKE condition (to perform regular expression matching) with syntax and examples. MySQL also has an extended regular expression pattern matching using the REGEXP_LIKE(column_name, 'regex') function, which takes the column name and the regular expression as parameters. REGEXP_LIKE(column_name, 'regex') Function