SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function CRC32 (children 1)
     ExpressionList (children 1)
      Identifier str2
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier table1
   ExpressionList (children 1)
    OrderByElement (children 1)
     Function CRC32 (children 1)
      ExpressionList (children 1)
       Identifier str2