code: func (p *MySQLPrivilege) LoadColumnsPrivTable(ctx sessionctx.Context) error {
  	return p.loadTable(ctx, "select HIGH_PRIORITY Host,DB,User,Table_name,Column_name,Timestamp,Column_priv from mysql.columns_priv", p.decodeColumnsPrivTableRow)
  }
docs: // LoadColumnsPrivTable loads the mysql.columns_priv table from database.