SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 3)
    Identifier col1
    Identifier col2
    Function coalesce (children 1)
     ExpressionList (children 3)
      Identifier col1
      Identifier col2
      Literal UInt64_99
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier test1_00395
   ExpressionList (children 2)
    OrderByElement (children 1)
     Identifier col1
    OrderByElement (children 1)
     Identifier col2