[英]ORA-01036 error on update query using c#
I am getting error when I update a number and try to get back that number. 我更新号码并尝试取回该号码时收到错误。 I have already googled for this error but all codes suggest the same solution I have but still I get this error. 我已经用Google搜索了这个错误,但所有代码都提出了我所拥有的相同解决方案,但我仍然遇到此错误。
Oracle.DataAccess.Client.OracleException ORA-01036: illegal variable
name/number at Oracle.DataAccess.Client.OracleCommand.ExecuteNonQuery()
Here is my C# code: 这是我的C#代码:
//add one to sequence and update it
query = "update unique_sequences " +
"set last_sequence_number=last_sequence_number + 1 " +
"where unique_sequence_table_name='person' " +
"returning last_sequence_number into :outnumber";
command.CommandText = query;
OracleParameter last_number = new OracleParameter("outnumber", OracleDbType.Varchar2, 13);
last_number.Direction = ParameterDirection.Output;
command.Parameters.Add(last_number);
command.ExecuteNonQuery();
where last_sequence_number is VARCHAR2(13 BYTE). 其中last_sequence_number是VARCHAR2(13 BYTE)。
Thank you in advance. 先感谢您。
您需要使用不同的ParameterDirection
用法:
last_number.Direction = ParameterDirection.ReturnValue;
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