Case-insensitive REPLACE in MySQL?

Question

MySQL runs pretty much all string comparisons under the default collation... except the REPLACE command. I have a case-insensitive collation and need to run a

Answer 1

In the previous answers, and the pento.net link, the arguments to LOCATE() are lower-cased.

This is a waste of resources, as LOCATE is case-insensitive by default:

mysql> select locate('el', 'HELLo');
+-----------------------+
| locate('el', 'HELLo') |
+-----------------------+
|                     2 |
+-----------------------+

You can replace

WHILE Locate( LCASE(REPLACE_THIS), LCASE(REPLACE_WHERE), last_occurency ) > 0 DO

with

WHILE Locate(REPLACE_THIS, REPLACE_WHERE, last_occurency ) > 0 DO

etc.