REPLACE() performs a case-sensitive match when searching for from_str.
mysql>mysql>mysql> SELECT REPLACE('www.navioo.com', 'w', 'W');+-------------------------------------+| REPLACE('www.navioo.com', 'w', 'W') |+-------------------------------------+| WWW.navioo.com |+-------------------------------------+1 row in set (0.00 sec)mysql>
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