code: private static String generateCrudUpsert(Table table, Column partitioncolumn) {
          StringBuilder sb = new StringBuilder();
          sb.append("UPSERT INTO " + table.getTypeName() + " VALUES ");
  
          generateCrudColumnList(table, sb);
          sb.append(";");
  
          return sb.toString();
      }
docs: Create a statement like:
  Hack simple case of implementation SQL MERGE
  "upsert into <table> values (?, ?, ...);"