SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Asterisk
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier t1
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      TableIdentifier tj
     TableJoin (children 1)
      ExpressionList (children 3)
       Identifier key1
       Identifier key2
       Identifier key3
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier key1
