MySQL usuwa wszystkie spacje z całej kolumny

Aby zastąpić all spaces :

UPDATE `table` SET `col_name` = REPLACE(`col_name`, ' ', '')

Aby usunąć wszystkie tabs znaki :

UPDATE `table` SET `col_name` = REPLACE(`col_name`, '\t', '' )

Aby usunąć wszystkie new line znaki :

UPDATE `table` SET `col_name` = REPLACE(`col_name`, '\n', '')

http://dev.mysql.com/doc /refman/5.0/en/string-functions.html#function_replace

Aby usunąć first and last space(s) kolumny :

UPDATE `table` SET `col_name` = TRIM(`col_name`)

http://dev.mysql.com/doc /refman/5.0/en/string-functions.html#function_trim