mysql substitua um personagem em uma string
UPDATE users SET first_name = REPLACE (first_name, 'search', 'replace_with') where id > 0;
Grepper
UPDATE users SET first_name = REPLACE (first_name, 'search', 'replace_with') where id > 0;UPDATE
table_name
SET
column_name = REPLACE(column_name, 'text to find', 'text to replace with')
WHERE
column_name LIKE '%text to find%';UPDATE products SET
productDescription = REPLACE(productDescription,'abuot','about');UPDATE products
SET
productDescription = REPLACE(productDescription,
'abuot',
'about');#REPLACE(string, from_string, new_string)
SELECT REPLACE(myText, "a", "b") as myText FROM tableText;