改善插入時的sqlite.net性能

Question

我有要存儲在數據庫中的記錄數。
數據庫的架構是這樣的
像這樣的人表：

CREATE TABLE IF NOT EXISTS Person (id INTEGER PRIMARY KEY, name TEXT)

和這樣的文件表：

CREATE TABLE IF NOT EXISTS File (id INTEGER PRIMARY KEY, FileName TEXT,FilePath TEXT, PersonID NUMERIC CONSTRAINT person_file REFERENCES [Person]([id])ON DELETE NO ACTION ON UPDATE NO ACTION)

我使用此功能在兩個表中進行插入

對於3700條記錄，此代碼在筆記本電腦上花費了140秒，

public long BuildDB(List<DB.Person> persons, List<DB.File> Files, FrmTrain form)
        {
            long result = -1;
            try
            {

                long personID = 0;
                using (SQLiteConnection sqlconnection = new SQLiteConnection("Data Source=" + DbPath + ";Version=3;"))
                {
                    sqlconnection.Open();
                    SQLiteCommand PersonCommand = sqlconnection.CreateCommand();
                    SQLiteParameter personParam = new SQLiteParameter();
                    PersonCommand.CommandText = "INSERT INTO Person('Name') VALUES(?)";
                    PersonCommand.Parameters.Add(personParam);


                    SQLiteCommand FileCommand = sqlconnection.CreateCommand();
                    SQLiteParameter FileParam1 = new SQLiteParameter("@filename");
                    SQLiteParameter FileParam2 = new SQLiteParameter("@filepath");
                    SQLiteParameter FileParam3 = new SQLiteParameter("@personid");

                    FileCommand.CommandText = "INSERT INTO file(FileName,FilePath,PersonID) VALUES(@filename,@filepath,@personid)";
                    FileCommand.Parameters.Add(FileParam1);
                    FileCommand.Parameters.Add(FileParam2);
                    FileCommand.Parameters.Add(FileParam3);
                    for (int i = 0; i < persons.Count; i++)
                    {
                        using (SQLiteTransaction _SQLiteTransaction = sqlconnection.BeginTransaction())
                        {
                            personParam.Value = persons[i].Name;
                            PersonCommand.ExecuteNonQuery();
                            personID = sqlconnection.LastInsertRowId;

                            foreach (var item in Files.Where(f => f.PersonID == personID))
                            {
                                FileParam1.Value = item.FileName;
                                FileParam2.Value = item.FilePath;
                                FileParam3.Value = item.PersonID;
                                FileCommand.ExecuteNonQuery();

                            }
                            _SQLiteTransaction.Commit();
                        }
                        form.Progress();
                    }
                    sqlconnection.Close();
                }
                result = 1;

            }
            catch (Exception e)
            {
                result = 0;
                throw;
            }



            return result;

        }

首先，我編寫了沒有事務的代碼，並花了大約500秒的時間。

無論如何，有沒有改善性能的方法？

Answer 1

嘗試對所有插入的人員使用一個SQLiteTransaction，僅使用一次提交。

        try
        {

            long personID = 0;
            using (SQLiteConnection sqlconnection = new SQLiteConnection("Data Source=" + DbPath + ";Version=3;"))
            {
                sqlconnection.Open();
                SQLiteCommand PersonCommand = sqlconnection.CreateCommand();
                SQLiteParameter personParam = new SQLiteParameter();
                PersonCommand.CommandText = "INSERT INTO Person('Name') VALUES(?)";
                PersonCommand.Parameters.Add(personParam);


                SQLiteCommand FileCommand = sqlconnection.CreateCommand();
                SQLiteParameter FileParam1 = new SQLiteParameter("@filename");
                SQLiteParameter FileParam2 = new SQLiteParameter("@filepath");
                SQLiteParameter FileParam3 = new SQLiteParameter("@personid");

                FileCommand.CommandText = "INSERT INTO file(FileName,FilePath,PersonID) VALUES(@filename,@filepath,@personid)";
                FileCommand.Parameters.Add(FileParam1);
                FileCommand.Parameters.Add(FileParam2);
                FileCommand.Parameters.Add(FileParam3);
                using (SQLiteTransaction _SQLiteTransaction = sqlconnection.BeginTransaction())
                {
                    for (int i = 0; i < persons.Count; i++)
                    {
                        personParam.Value = persons[i].Name;
                        PersonCommand.ExecuteNonQuery();
                        personID = sqlconnection.LastInsertRowId;

                        foreach (var item in Files.Where(f => f.PersonID == personID))
                        {
                            FileParam1.Value = item.FileName;
                            FileParam2.Value = item.FilePath;
                            FileParam3.Value = item.PersonID;
                            FileCommand.ExecuteNonQuery();
                        }
                    }
                    _SQLiteTransaction.Commit();
                    form.Progress();
                }
                sqlconnection.Close();
            }
            result = 1;

        }
        catch (Exception e)
        {
            result = 0;
            throw;
        }