private void addOpsDisplayNameColumnToHostRoleCommand() throws SQLException {
    dbAccessor.addColumn(HOST_ROLE_COMMAND_TABLE,
      new DBAccessor.DBColumnInfo(HRC_OPS_DISPLAY_NAME_COLUMN, String.class, 255, null, true));
  }
Adds the {@value #HRC_OPS_DISPLAY_NAME_COLUMN} column to the
{@value #HOST_ROLE_COMMAND_TABLE} table.

@throws SQLException
ambari-server/src/main/java/org/apache/ambari/server/upgrade/UpgradeCatalog270.java