SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 1)
    Function sum (alias j) (children 1)
     ExpressionList (children 1)
      Function plus (alias i) (children 1)
       ExpressionList (children 2)
        Literal UInt64_1
        Identifier uint64
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier test_table
   Function greater (children 1)
    ExpressionList (children 2)
     Identifier i
     Literal UInt64_0
   Function greater (children 1)
    ExpressionList (children 2)
     Identifier j
     Literal UInt64_0
