SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Literal UInt64_1
   TablesInSelectQuery (children 3)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier t0
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      TableIdentifier t0 (alias tx)
     TableJoin (children 1)
      Function exists (children 1)
       ExpressionList (children 1)
        Subquery (children 1)
         SelectWithUnionQuery (children 1)
          ExpressionList (children 1)
           SelectQuery (children 1)
            ExpressionList (children 1)
             Literal UInt64_1
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      TableIdentifier t0 (alias ty)
     TableJoin (children 1)
      Function equals (children 1)
       ExpressionList (children 2)
        Identifier t0.c0
        Identifier ty.c0
   Set
