UPDATE [LOW_PRIORITY] [IGNORE] tbl_name
      SET col_name1=expr1, [col_name2=expr2, ...]
      [WHERE where_definition]
      [LIMIT #]

##</code><code>##

  UPDATE [LOW_PRIORITY] [IGNORE] tbl_name
      SET col_name1=expr1 [, col_name2=expr2 ...]
      [WHERE where_definition]
      [LIMIT #]