使用trigger更新同一mysql表中的数据

Question

我有一个mysql表，QuotationPrt。我想创建以下触发器

private KeyInfo getKeyInfo(Credential c, String keyNameValue) {
    KeyName keyName = new KeyNameBuilder().buildObject();
    keyName.setValue(keyNameValue);
    EncryptionConfiguration secConfiguration = SecurityConfigurationSupport.getGlobalEncryptionConfiguration();
    NamedKeyInfoGeneratorManager namedKeyInfoGeneratorManager = secConfiguration.getDataKeyInfoGeneratorManager();
    KeyInfoGeneratorManager keyInfoGeneratorManager = namedKeyInfoGeneratorManager.getDefaultManager();
    KeyInfoGeneratorFactory keyInfoGeneratorFactory = keyInfoGeneratorManager.getFactory(credential);
    KeyInfoGenerator keyInfoGenerator = keyInfoGeneratorFactory.newInstance();
    KeyInfo keyInfo = keyInfoGenerator.generate(credential);
    keyInfo.getKeyNames().add(keyName);
    keyInfo.getX509Datas().clear();
    return keyInfo;             
}

这应该更新quotationprt的TOTAL列。但是当我尝试更新quotationprt表中的数据时，它会出错并且数据不会更新。在更新数据并尝试更新同一个表后，我可能会写入触发器。

那么有什么方法可以购买我可以更新TOTAL列吗？