@Override
  public void clearTableColumn(String tableName, String columnName, Object value) throws SQLException {
    if (tableExists(tableName)){
      String sqlQuery = String.format("UPDATE %s SET %s = ?", convertObjectName(tableName), convertObjectName(columnName));
      executePreparedUpdate(sqlQuery, value);
    } else {
      LOG.warn("{} table doesn't exists, skipping", tableName);
    }
  }
Reset all rows with {@code value} for {@code columnName} column

@param tableName  name of the table
@param columnName
@param value      data to use for update
ambari-server/src/main/java/org/apache/ambari/server/orm/DBAccessorImpl.java