Question

我有以下代码：

using (var connection = new SqlConnection(connetionString))
{
    try
    {
        connection.Open();
    }
    catch(Exception e)       
    {
        Console.WriteLine(e.Message);
    }

    Console.WriteLine("DatabasConnection Done");

    DateTime datum = DateTime.Now;
    string LastChangedBy = "System";

    foreach (Person p in myPersons)
    {
        SqlCommand command1 = new SqlCommand();

        try
        {
            command1 = Avreg(p.UnregistrationReason, p.GivenNameNumber, p.ProtectedIdentity, p.CitizenshipDate, connection);
        }
        catch (Exception e)
        {
            Console.WriteLine(e.Message);
        }

        Console.WriteLine("LALALALA Done");

        command1.Parameters.AddWithValue("@PersonalIdentityNumber", string.Format("{0}{1}", p.PersonalIdentityNumber, p.SpecialIdentityNumber));
        command1.Parameters.AddWithValue("@FirstName", p.FirstName ?? DBNull.Value.ToString());
        //command1.Parameters.AddWithValue("@LastName", p.LastName ?? DBNull.Value.ToString());
        //command1.Parameters.AddWithValue("@NationalRegistrationCountyCode", p.NationalRegistrationCountyCode ?? DBNull.Value.ToString());
        //command1.Parameters.AddWithValue("@NationalRegistrationMunicipalityCode", p.NationalRegistrationMunicipalityCode ?? DBNull.Value.ToString());
        //command1.Parameters.AddWithValue("@NationalRegistrationDistributionAddress1", p.NationalRegistrationDistributionAddress1 ?? DBNull.Value.ToString());
        //command1.Parameters.AddWithValue("@NationalRegistrationDistributionAddress2", p.NationalRegistrationDistributionAddress2 ?? DBNull.Value.ToString());
         //command1.Parameters.AddWithValue("@NationalRegistrationPostCode", p.NationalRegistrationPostCode ?? DBNull.Value.ToString());
         //command1.Parameters.AddWithValue("@NationalRegistrationCity", p.NationalRegistrationCity ?? DBNull.Value.ToString());
         //command1.Parameters.AddWithValue("@BirthCountyCode", p.BirthCountyCode ?? DBNull.Value.ToString());
         //command1.Parameters.AddWithValue("@UnregistrationDate", p.UnregistrationDate ?? DBNull.Value.ToString());
         //command1.Parameters.AddWithValue("@BirthParish", p.BirthParish ?? DBNull.Value.ToString());
         //command1.Parameters.AddWithValue("@CitizenshipCode", p.CitizenshipCode ?? DBNull.Value.ToString());
         //command1.Parameters.AddWithValue("@CitizenshipDate", p.CitizenshipDate ?? DBNull.Value.ToString());
         //command1.Parameters.AddWithValue("@NationalRegistrationDate", p.NationalRegistrationDate ?? DBNull.Value.ToString());
         //command1.Parameters.AddWithValue("@ForeignDistrubtionAddress1", p.ForeignDistrubtionAddress1 ?? DBNull.Value.ToString());
         //command1.Parameters.AddWithValue("@ForeignDistrubtionAddress2", p.ForeignDistrubtionAddress2 ?? DBNull.Value.ToString());
         //command1.Parameters.AddWithValue("@ForeignDistrubtionAddress3", p.ForeignDistrubtionAddress3 ?? DBNull.Value.ToString());
         //command1.Parameters.AddWithValue("@ForeignBirthCity", p.ForeignBirthCity ?? DBNull.Value.ToString());

         //command1.Parameters.AddWithValue("@LastChangedBy", LastChangedBy);
         //command1.Parameters.AddWithValue("@LastChangedDate", datum);

         command1.ExecuteNonQuery();

         Console.WriteLine(string.Format("{0}{1}", p.PersonalIdentityNumber, p.SpecialIdentityNumber));
     }
        }

            Console.WriteLine("Done");
            Console.WriteLine("Alla fält uppdaterade");

        Console.ReadKey();

             }// Put a break-point here, then mouse-over PersonalIdentityNumber...  deserializedList contains everything if you need it
            catch (Exception e)
            {

                Console.Write(" ---- FEL VID INLÄSNINGEN ------  " + e.Message);
                Console.ReadKey();
            }

        }






        public static SqlCommand Avreg(string s, string t, string p, string c, SqlConnection connection)
        {
            try
            {


            var query = "UPDATE Seamen SET FirstName = @FirstName";//, "+
                //"LastName = @LastName, "+
                //"NationalRegistrationCountyCode = @NationalRegistrationCountyCode, "+
                //"NationalRegistrationMunicipalityCode = @NationalRegistrationMunicipalityCode, "+
                //"NationalRegistrationDistributionAddress1 = @NationalRegistrationDistributionAddress1, "+
                //"NationalRegistrationDistributionAddress2 = @NationalRegistrationDistributionAddress2, "+
                //"UnregistrationDate = @UnregistrationDate, "+
                //"NationalRegistrationPostCode = @NationalRegistrationPostCode, "+
                //"NationalRegistrationCity = @NationalRegistrationCity, "+
                //"BirthCountyCode = @BirthCountyCode, "+
                //"BirthParish = @BirthParish, "+
                //"CitizenshipCode = @CitizenshipCode, "+
                //"CitizenshipDate = @CitizenshipDate, " +
                //"NationalRegistrationDate = @NationalRegistrationDate, "+
                //"ForeignDistrubtionAddress1 = @ForeignDistrubtionAddress1, "+
                //"ForeignDistrubtionAddress2 = @ForeignDistrubtionAddress2, "+
                //"ForeignDistrubtionAddress3 = @ForeignDistrubtionAddress3, "+
                //"ForeignBirthCity = @ForeignBirthCity, "+
                //"LastChangedBy = @LastChangedBy, "+
                //"LastChangedDate = @LastChangedDate";

            SqlCommand command1;



            if (c == "0")
            {
                query += ", CitizenshipDate = null";
                command1 = new SqlCommand(query, connection);




            }
            else
            {
                query += ", CitizenshipDate = @CitizenshipDate";
                command1 = new SqlCommand(query, connection);

                command1.Parameters.AddWithValue("@CitizenshipDate", c ?? DBNull.Value.ToString());

            }


            if (p == "J")
            {

                query = "UPDATE Seamen SET FirstName ='Skyddad personuppgift'";//, " +
                //"LastName = 'Se hjälptext', " +
                //"ProtectedIdentity = '1', " +
                //"NationalRegistrationCountyCode = NULL, " +
                //"NationalRegistrationMunicipalityCode = NULL, " +
                //"NationalRegistrationCoAddress = NULL, " +
                ////"NationalRegistrationDistributionAddress1 = NULL, " +
                ////"NationalRegistrationDistributionAddress2 = NULL, " +
                //"UnregistrationDate = NULL, " +
                //"NationalRegistrationPostCode = NULL, " +
                //"NationalRegistrationCity = NULL, " +
                //"BirthCountyCode = NULL, " +
                //"BirthParish = NULL, " +
                //"CitizenshipCode = NULL, " +
                //    //"CitizenshipDate = @CitizenshipDate, " +
                //"NationalRegistrationDate = NULL, " +
                //"ForeignDistrubtionAddress1 = NULL, " +
                //"ForeignDistrubtionAddress2 = NULL, " +
                //"ForeignDistrubtionAddress3 = NULL, " +
                //"UnregistrationReason = NULL, " +
                //"ForeignBirthCity = NULL, " +
                //"LastChangedBy = @LastChangedBy, " +
                //"GivenNameNumber = NULL, " +
                //"LastChangedDate = @LastChangedDate WHERE PersonalIdentityNumber = @PersonalIdentityNumber";



                command1 = new SqlCommand(query, connection);
                command1.Parameters.Clear();
                return command1;
            }

             if ((!string.IsNullOrEmpty(s)) && !string.IsNullOrEmpty(t))
            {
                query += ", UnregistrationReason = @UnregistrationReason";
                query += ", GivenNameNumber = @GivenNameNumber ";

                command1 = new SqlCommand(query, connection);

                command1.Parameters.AddWithValue("@UnregistrationReason", s ?? DBNull.Value.ToString());
                command1.Parameters.AddWithValue("@GivenNameNumber", t ?? DBNull.Value.ToString());

            }
            else if (!string.IsNullOrEmpty(s) && string.IsNullOrEmpty(t))
            {
                query += ", UnregistrationReason = @UnregistrationReason, GivenNameNumber = @GivenNameNumber WHERE PersonalIdentityNumber = @PersonalIdentityNumber";
                command1 = new SqlCommand(query, connection);

                t = "00";
                command1.Parameters.AddWithValue("@UnregistrationReason", s ?? DBNull.Value.ToString());
                command1.Parameters.AddWithValue("@GivenNameNumber", t ?? DBNull.Value.ToString());

            }

            else if (string.IsNullOrEmpty(s) && !string.IsNullOrEmpty(t))
            {
                query += ", GivenNameNumber = @GivenNameNumber WHERE PersonalIdentityNumber = @PersonalIdentityNumber";
                command1 = new SqlCommand(query, connection);

                command1.Parameters.AddWithValue("@GivenNameNumber", t ?? DBNull.Value.ToString());

            }
            else
            {

                    query += ", GivenNameNumber = @GivenNameNumber WHERE PersonalIdentityNumber = @PersonalIdentityNumber";
                    t = "00";
                    command1 = new SqlCommand(query, connection);

                    command1.Parameters.AddWithValue("@GivenNameNumber", t ?? DBNull.Value.ToString());

                    return command1;

            }
             return command1;

        }


        catch(Exception e)
    {
        throw;
    }
}
//}

此处发生错误：

command1.Parameters.AddWithValue("@PersonalIdentityNumber", string.Format("{0}{1}", p.PersonalIdentityNumber, p.SpecialIdentityNumber));
command1.Parameters.AddWithValue("@FirstName", p.FirstName ?? DBNull.Value.ToString());
//command1.Parameters.AddWithValue("@LastName", p.LastName ?? DBNull.Value.ToString());

command1.ExecuteNonQuery();

Console.WriteLine(string.Format("{0}{1}", p.PersonalIdentityNumber, p.SpecialIdentityNumber));

我收到错误：

违反主键约束＆＃39; PK_logSeamen＆＃39;。无法插入对象＆＃39; dbo.logSeamen＆＃39;中的重复键。声明一直如此终止。

我是否需要清除SqlCommand？

显然我有这个触发器

USE [Bums]
GO
/****** Object:  Trigger [dbo].[trSeamen_LogI]    Script Date: 05/16/2016 11:43:58 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER TRIGGER [dbo].[trSeamen_LogI] ON [dbo].[Seamen] AFTER INSERT AS
INSERT INTO [logSeamen] ([PersonalIdentityNumber], [ProtectedIdentity], [ReferedCivicRegistrationNumber], [UnregistrationReason], [UnregistrationDate], [MessageComputerComputer], [GivenNameNumber], [FirstName], [MiddleName], [LastName], [NotifyName], [NationalRegistrationDate], [NationalRegistrationCountyCode], [NationalRegistrationMunicipalityCode], [NationalRegistrationCoAddress], [NationalRegistrationDistributionAddress1], [NationalRegistrationDistributionAddress2], [NationalRegistrationPostCode], [NationalRegistrationCity], [NationalRegistrationNotifyDistributionAddress], [NationalRegistrationNotifyPostCode], [NationalRegistrationNotifyCity], [ForeignDistrubtionAddress1], [ForeignDistrubtionAddress2], [ForeignDistrubtionAddress3], [ForeignDistrubtionCountry], [ForeignDate], [BirthCountyCode], [BirthParish], [ForeignBirthCity], [CitizenshipCode], [CitizenshipDate], [Email], [Telephone], [Mobiletelephone], [Gender], [NotNewsPaper], [Note], [StatusCode], [NationalRegistrationCode], [RegistrationDate], [LastUpdatedFromNavet], [TemporaryDistrubtionAddress1], [TemporaryDistrubtionAddress2], [TemporaryDistrubtionAddress3], [TemporaryDistrubtionCountry], [Password], [VisibilityLevel],[SeamanIdentity], [LastChangedBy], [LastChangedDate], LogAction)
SELECT [PersonalIdentityNumber], [ProtectedIdentity], [ReferedCivicRegistrationNumber], [UnregistrationReason], [UnregistrationDate], [MessageComputerComputer], [GivenNameNumber], [FirstName], [MiddleName], [LastName], [NotifyName], [NationalRegistrationDate], [NationalRegistrationCountyCode], [NationalRegistrationMunicipalityCode], [NationalRegistrationCoAddress], [NationalRegistrationDistributionAddress1], [NationalRegistrationDistributionAddress2], [NationalRegistrationPostCode], [NationalRegistrationCity], [NationalRegistrationNotifyDistributionAddress], [NationalRegistrationNotifyPostCode], [NationalRegistrationNotifyCity], [ForeignDistrubtionAddress1], [ForeignDistrubtionAddress2], [ForeignDistrubtionAddress3], [ForeignDistrubtionCountry], [ForeignDate], [BirthCountyCode], [BirthParish], [ForeignBirthCity], [CitizenshipCode], [CitizenshipDate], [Email], [Telephone], [Mobiletelephone], [Gender], [NotNewsPaper], [Note], [StatusCode], [NationalRegistrationCode], [RegistrationDate], [LastUpdatedFromNavet], [TemporaryDistrubtionAddress1], [TemporaryDistrubtionAddress2], [TemporaryDistrubtionAddress3], [TemporaryDistrubtionCountry], [Password], [VisibilityLevel], [SeamanIdentity], [LastChangedBy], [LastChangedDate], 'INSERT' FROM INSERTED

如何确保它不违反主键约束？

更新2

USE [Bums]
GO
/****** Object:  Trigger [dbo].[trSeamen_LogU]    Script Date: 05/16/2016 12:53:46 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER TRIGGER [dbo].[trSeamen_LogU] ON [dbo].[Seamen] AFTER UPDATE AS
INSERT INTO [logSeamen] ([PersonalIdentityNumber], [ProtectedIdentity], [ReferedCivicRegistrationNumber], [UnregistrationReason], [UnregistrationDate], [MessageComputerComputer], [GivenNameNumber], [FirstName], [MiddleName], [LastName], [NotifyName], [NationalRegistrationDate], [NationalRegistrationCountyCode], [NationalRegistrationMunicipalityCode], [NationalRegistrationCoAddress], [NationalRegistrationDistributionAddress1], [NationalRegistrationDistributionAddress2], [NationalRegistrationPostCode], [NationalRegistrationCity], [NationalRegistrationNotifyDistributionAddress], [NationalRegistrationNotifyPostCode], [NationalRegistrationNotifyCity], [ForeignDistrubtionAddress1], [ForeignDistrubtionAddress2], [ForeignDistrubtionAddress3], [ForeignDistrubtionCountry], [ForeignDate], [BirthCountyCode], [BirthParish], [ForeignBirthCity], [CitizenshipCode], [CitizenshipDate], [Email], [Telephone], [Mobiletelephone], [Gender], [NotNewsPaper], [Note], [StatusCode], [NationalRegistrationCode], [RegistrationDate], [LastUpdatedFromNavet], [TemporaryDistrubtionAddress1], [TemporaryDistrubtionAddress2], [TemporaryDistrubtionAddress3], [TemporaryDistrubtionCountry], [Password], [VisibilityLevel], [SeamanIdentity],[LastChangedBy], [LastChangedDate], LogAction)
SELECT [PersonalIdentityNumber], [ProtectedIdentity], [ReferedCivicRegistrationNumber], [UnregistrationReason], [UnregistrationDate], [MessageComputerComputer], [GivenNameNumber], [FirstName], [MiddleName], [LastName], [NotifyName], [NationalRegistrationDate], [NationalRegistrationCountyCode], [NationalRegistrationMunicipalityCode], [NationalRegistrationCoAddress], [NationalRegistrationDistributionAddress1], [NationalRegistrationDistributionAddress2], [NationalRegistrationPostCode], [NationalRegistrationCity], [NationalRegistrationNotifyDistributionAddress], [NationalRegistrationNotifyPostCode], [NationalRegistrationNotifyCity], [ForeignDistrubtionAddress1], [ForeignDistrubtionAddress2], [ForeignDistrubtionAddress3], [ForeignDistrubtionCountry], [ForeignDate], [BirthCountyCode], [BirthParish], [ForeignBirthCity], [CitizenshipCode], [CitizenshipDate], [Email], [Telephone], [Mobiletelephone], [Gender], [NotNewsPaper], [Note], [StatusCode], [NationalRegistrationCode], [RegistrationDate], [LastUpdatedFromNavet], [TemporaryDistrubtionAddress1], [TemporaryDistrubtionAddress2], [TemporaryDistrubtionAddress3], [TemporaryDistrubtionCountry], [Password], [VisibilityLevel], [SeamanIdentity],[LastChangedBy], [LastChangedDate], 'UPDATE' FROM INSERTED

Answer 1

RE

违反主键约束'PK_logSeamen'。无法插入对象'dbo.logSeamen'中的重复键。声明一直如此终止。

看起来你在Seamen表上有一个更新触发器。检查您的触发器正在做什么，并在必要时进行修复。

Answer 2

您的触发器是从Inserted表插入一系列值，您说的是PersonalIdentityNumber是LogSeamen中的主键。然后很明显，每次更新都会违反它，因为它已经在第一次插入操作时插入了。删除PK_LogSeamen，或者更好的是为PK创建另一个自动生成的列。

Answer 3

更新可能会在桌面上多次发生。您的logSeamen表用于跟踪更改，并且更新的行总是可能在过去的某个时间更新过。您无法将PersonalIdentityNumber（或Seamen表中的任何列）标记为logSeamen表中的主键。

要解决问题，

从PersonalIdentityNumber表格中的logSeamen列中删除主键约束，以便您可以多次插入相同的PersonalIdentityNumber。

或者，添加一个新列（例如logSeamenId）作为INDENTITY(1,1)的主键，这将为该行自动生成一个数字。

UPDATE时违反主键约束错误

3 个答案: