VB.net 函数给出 ORA-00911 无效字符错误

Question

 Public Shared Function GetData(ByVal id As Integer) As List(Of SomeClass)
            Dim command As New OracleCommand       
            Dim conn As New OracleConnection(WebConfigurationManager.ConnectionStrings("ConnectionString").ToString)
            Dim param As New OracleParameter
            param.ParameterName = "idnumber"
            param.Value = id
            param.DbType = DbType.Int32
            command.Parameters.Add(param) 

            command.Connection = conn
            command.CommandText = "select VAL1, VAL2, Year from local.proc where id = :idnumber and Year = to_number(to_char(sysdate,’YYYY’))"

            Dim reader As OracleDataReader
            Dim someList As New List(Of SomeClass)

            connection.Open()
            reader = command.ExecuteReader()
            While reader.Read
                Dim someClass As New SomeClass
                someClass.VAL1 = reader("VAL1")
                someClass.VAL2 = reader("VAL2")
                someClass.Year = reader("YEAR")
                someList.Add(someClass)
            End While
            connection.Close()
            Return someList
        End Function

此函数给出 ORA-00911 无效字符错误。我还有其他相同风格的方法，并且这些方法运行正常。请问我哪里出错了有什么建议吗？谢谢

Answer 1

我认为问题在于该年份的 SQL 语句中的引号错误，即： 'YYYY'

将其更改为 'YYYY'

将行：替换

command.CommandText = "select VAL1, VAL2, Year from local.proc where id = :idnumber and Year = to_number(to_char(sysdate,’YYYY’))"

为

command.CommandText = "select VAL1, VAL2, Year from local.proc where id = :idnumber and Year = to_number(to_char(sysdate,'YYYY'))"

Answer 2

您似乎正在使用格式化的撇号。

to_char(sysdate,’YYYY’

尝试将其更改为

to_char(sysdate,'YYYY'