public List<String> createSql(DbEntity entity, DbAttribute column) {
    SQLParameterBinding value = get(entity, column);
    if (value == null) {
      return Collections.emptyList();
    }

    // TODO: change things so it is possible to use prepared statements here
    return Collections.singletonList(
        "UPDATE "
            + entity.getFullyQualifiedName()
            + " SET "
            + column.getName()
            + "='"
            + value.getValue()
            + "' WHERE "
            + column.getName()
            + " IS NULL");
  }
  @Override
  protected void render(InternalContextAdapter context, Writer writer, SQLParameterBinding binding)
      throws IOException {

    if (binding.getValue() != null) {
      bind(context, binding);
      writer.write("<> ?");
    } else {
      writer.write("IS NOT NULL");
    }
  }