SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Identifier b.value
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 1)
          ExpressionList (children 1)
           Function toInt8 (alias id) (children 1)
            ExpressionList (children 1)
             Literal UInt64_1
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      TableIdentifier test_00597 (alias b)
     TableJoin (children 1)
      ExpressionList (children 1)
       Identifier id
   Function equals (children 1)
    ExpressionList (children 2)
     Identifier value
     Literal UInt64_1
