SelectWithUnionQuery (children 2)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 1)
    Asterisk
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier lhs (alias t0)
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      TableIdentifier rhs (alias t1)
     TableJoin (children 1)
      Function equals (children 1)
       ExpressionList (children 2)
        Identifier t0.a
        Identifier t1.a
   Function less (children 1)
    ExpressionList (children 2)
     Identifier t1.a
     Literal UInt64_10000
   Set
 Identifier Null
