This MySQL function goes through the first argument and returns a string in which every occurrence of the second argument is replaced with third argument.
Below is the syntax for this command. Text within square brackets (i.e, [ and ] ) are optional. Choices are separated by bars (i.e, | ). Ellipses preceded by a comma indicates a repeating pattern. Ellipses before or after syntax are used to highlight a relevant except from the larger syntax. Text displayed in italic letters represent text that should be replaced with the specific names related to the database (e.g., column with the name of the column).
REPLACE(string, old_element, new_element)
This function goes through the first argument and returns a string in which every occurrence of the second argument is replaced with third argument.
UPDATE students SET title = REPLACE(title, 'Mrs.', 'Ms.');
This SQL statement will retrieve each student's title and replace any occurrences of Mrs. with Ms. UPDATE will change only the rows where the replacement was made.