A test case for the bug  that allowed table names to be used in ORDER BY columns (But #3064)
union.test:
  A test case for the bug  that allowed table names to be used in ORDER BY columns (But #3064)
sql_union.cc:
  A fix for a bug that allowed table names to be used in ORDER BY columns (But #3064)


sql/sql_union.cc:
  A fix for a bug that allowed table names to be used in ORDER BY columns (But #3064)
mysql-test/t/union.test:
  A test case for the bug  that allowed table names to be used in ORDER BY columns (But #3064)
mysql-test/r/union.result:
   A test case for the bug  that allowed table names to be used in ORDER BY columns (But #3064)