SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 3)
    Literal \'clickhouse\' (alias s1)
    Literal \'mouse\' (alias s2)
    Function editDistance (children 1)
     ExpressionList (children 2)
      Identifier s1
      Identifier s2
