如何解决 SQL 错误：ORA-01843: not a valid month

Question

知道我的查询有什么问题吗？

我正在尝试更新数据库的一行，但我使用的查询导致异常。

UPDATE Table1
SET CHANGE_DELIVERY_REASON    = 'Card Activation',
CHANGE_DELIVERY_NOTE        = 'ACTIVATION SUCCESS [1 OK - 2 OK]',
RECONCILIATION_STATUS       = 1 ,
RECONCILIATION_LAST_UPDATED = '23/4/2018 12:00:00 AM',
RECONCILIATION_COUNT        = '6',
ACTIVATION_FAILURE          = 'SUCCESS';

我收到此错误：

“SQL 错误：ORA-01843：无效月份”

我没有弄清楚我的查询出了什么问题。

updateQuery = " UPDATE " + clsUtility.GetMasterTable() + " SET ";
updateQuery += "   CHANGE_DELIVERY_REASON = 'Card Activation', ";
updateQuery += "   CHANGE_DELIVERY_NOTE = '" + notes + "', ";
updateQuery += "   RECONCILIATION_STATUS = 1 , ";
updateQuery += "   RECONCILIATION_LAST_UPDATED = '" + DateTime.Today + "', ";
updateQuery += "   RECONCILIATION_COUNT = '" + reconciliation_count + "',";
updateQuery += "   ACTIVATION_FAILURE = '" + resultPart + "', ";

Answer 1

您的问题是您给出的日期的格式，这是在其他答案中处理的。您将需要它用于其他日期字段，因此请务必查看它。

但是，对于这种特殊情况，您可以简单地停止使用本地日期并让数据库完成工作：

RECONCILIATION_LAST_UPDATED = trunc(sysdate)

附带说明：请在您的查询中使用参数绑定。您对SQL injection 攻击持开放态度。

通过参数绑定，您不仅可以避免SQL注入攻击，而且不必担心实际上不需要格式化存储的数据的格式字符串：

using (var connection = new SqlConnection())
{
    using (var command = connection.CreateCommand())
    {
        command.CommandText = "UPDATE " + clsUtility.GetMasterTable() + " SET RECONCILIATION_LAST_UPDATED = :last_updated, CHANGE_DELIVERY_NOTE = :delivery_note";

        var parameterLastUpdated = command.CreateParameter();

        parameterLastUpdated.ParameterName = ":last_updated";
        parameterLastUpdated.SqlDbType = SqlDbType.DateTime;
        parameterLastUpdated.Direction = ParameterDirection.Input;
        parameterLastUpdated.Value = DateTime.Today;

        command.Parameters.Add(parameterLastUpdated);

        var parameterDelivery = command.CreateParameter();

        parameterDelivery.ParameterName = ":delivery_note";
        parameterDelivery.SqlDbType = SqlDbType.NVarChar;
        parameterDelivery.Direction = ParameterDirection.Input;
        parameterDelivery.Value = "Some string you want in notes";

        command.Parameters.Add(parameterDelivery);

        command.ExecuteNonQuery();
    }
}

Answer 2

你应该使用TO_DATE()函数。

将你的一行改为这一行：

updateQuery += "   RECONCILIATION_LAST_UPDATED = TO_DATE('" + 
                   DateTime.Today + "', 'DD/MM/YYYY HH:MI:SS AM'), ";

更正的代码：

updateQuery = " UPDATE " + clsUtility.GetMasterTable() + " SET ";
updateQuery += "   CHANGE_DELIVERY_REASON = 'Card Activation', ";
updateQuery += "   CHANGE_DELIVERY_NOTE = '" + notes + "', ";
updateQuery += "   RECONCILIATION_STATUS = 1 , ";
updateQuery += "   RECONCILIATION_LAST_UPDATED = TO_DATE('" + DateTime.Today + "', 'DD/MM/YYYY HH:MI:SS AM'), ";           //This Line is changed
updateQuery += "   RECONCILIATION_COUNT = '" + reconciliation_count + "',";
updateQuery += "   ACTIVATION_FAILURE = '" + resultPart + "', ";

一般语法：

Oracle/PLSQL 中 TO_DATE 函数的语法是：

TO_DATE( string1 [, format_mask] [, nls_language] )

更多信息请点击链接：

https://www.techonthenet.com/oracle/functions/to_date.php

Answer 3

问题是您的日期格式

updateQuery = " UPDATE " + clsUtility.GetMasterTable() + " SET ";
updateQuery += "   CHANGE_DELIVERY_REASON = 'Card Activation', ";
updateQuery += "   CHANGE_DELIVERY_NOTE = '" + notes + "', ";
updateQuery += "   RECONCILIATION_STATUS = 1 , ";
updateQuery += "   RECONCILIATION_LAST_UPDATED = TO_DATE('" + DateTime.Today + "','DD/MM/YYYY HH:MI:SS AM'), ";
updateQuery += "   RECONCILIATION_COUNT = '" + reconciliation_count + "',";
updateQuery += "   ACTIVATION_FAILURE = '" + resultPart + "', ";

试试这个