Select all columns except one in MySQL?

Actually there is a way, you need to have permissions of course for doing this …

SET @sql = CONCAT('SELECT ', (SELECT REPLACE(GROUP_CONCAT(COLUMN_NAME), '<columns_to_omit>,', '') FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = '<table>' AND TABLE_SCHEMA = '<database>'), ' FROM <table>');

PREPARE stmt1 FROM @sql;
EXECUTE stmt1;

Replacing <table>, <database> and <columns_to_omit>