public List <Song> EfCoreSelect()
{
using (var db = new SongContext())
{
return(db.Songs.Take(size).AsNoTracking().ToList());
}
}
public void Setup()
{
Orm.fsql.CodeFirst.SyncStructure(typeof(Song), typeof(Song_tag), typeof(Tag));
//Orm.sugar.CodeFirst.InitTables(typeof(Song), typeof(Song_tag), typeof(Tag));
//sugar创建表失败：SqlSugar.SqlSugarException: Sequence contains no elements
//测试前清空数据
Orm.fsql.Delete <Song>().Where(a => a.Id > 0).ExecuteAffrows();
//Orm.sugar.Deleteable<Song>().Where(a => a.Id > 0).ExecuteCommand();
Orm.fsql.Ado.ExecuteNonQuery("delete from efcore_song");
songs = Enumerable.Range(0, size).Select(a => new Song
{
Create_time = DateTime.Now,
Is_deleted = false,
Title = $"Insert_{a}",
Url = $"Url_{a}"
});
//预热
Orm.fsql.Insert(songs.First()).ExecuteAffrows();
//Orm.sugar.Insertable(songs.First()).ExecuteCommand();
using (var db = new SongContext())
{
//db.Configuration.AutoDetectChangesEnabled = false;
db.Songs.AddRange(songs.First());
db.SaveChanges();
}
}
public int EfCoreInsert()
{
using (var db = new SongContext()) {
//db.Configuration.AutoDetectChangesEnabled = false;
db.Songs.AddRange(songs.ToArray());
return(db.SaveChanges());
}
}
