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REGEXP_REPLACE() is used to replace a string matching a given regular expression pattern with the specified new string.


> REGEXP_REPLACE(expr, pat, repl[, pos[, occurrence[, match_type]]])


  • expr is the string to replace.

  • pat This is a regular expression, the function will find all strings that match this pattern.

  • repl is the replacement string used to replace the found matching string.

  • pos: The position in expr at which to start the search. If omitted, the default is 1.

  • occurrence: Which occurrence of a match to replace. If omitted, the default is 0 (which means replace all occurrences).

  • match_type: The optional match_type argument is a string that may contain any or all the following characters specifying how to perform matching:

    • 'c': Case-sensitive matching by default.
    • 'i': Case-insensitive matching.
    • 'n': The . character matches line terminators. The default is for . matching to stop at the end of a line.
    • 'm': Multiple-line mode. Recognize line terminators within the string. The default behavior is to match line terminators only at the start and end of the string expression.
    • 'u': Unix-only line endings. Only the newline character is recognized as a line ending by the ., ^, and $ match operators.


mysql> SELECT REGEXP_REPLACE('Hello, World!', 'World', 'Universe');
| regexp_replace(Hello, World!, World, Universe) |
| Hello, Universe!                               |
1 row in set (0.00 sec)

mysql> SELECT REGEXP_REPLACE('Cat Dog Cat Dog Cat','Cat', 'Tiger') 'Result';
| Result                    |
| Tiger Dog Tiger Dog Tiger |
1 row in set (0.01 sec)