using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using SqlSugar; namespace OrmTest { public class UNavDynamic111N { public static void Init() { var db = NewUnitTest.Db; db.CodeFirst.InitTables(); db.DbMaintenance.TruncateTable(); db.Insertable(new UnitaSchoolA() { SchoolId = 1, CityId = 1001001, School_Name = "北大" }).ExecuteCommand(); db.Insertable(new UnitaSchoolA() { SchoolId = 2, CityId = 2, School_Name = "清华" }).ExecuteCommand(); db.Insertable(new UnitaSchoolA() { SchoolId = 3, CityId = 3, School_Name = "青鸟" }).ExecuteCommand(); db.Insertable(new UnitaStudentA() { StudentId = 1, SchoolId = 1, Name = "北大jack" }).ExecuteCommand(); db.Insertable(new UnitaStudentA() { StudentId = 2, SchoolId = 1, Name = "北大tom" }).ExecuteCommand(); db.Insertable(new UnitaStudentA() { StudentId = 3, SchoolId = 2, Name = "清华jack" }).ExecuteCommand(); db.Insertable(new UnitaStudentA() { StudentId = 4, SchoolId = 2, Name = "清华tom" }).ExecuteCommand(); db.Insertable(new UnitaStudentA() { StudentId = 5, SchoolId = null, Name = "清华tom" }).ExecuteCommand(); db.Insertable(new UnitaStudentA() { StudentId = 6, SchoolId = 3, Name = "青鸟学生" }).ExecuteCommand(); db.Insertable(new UnitaBookA() { BookId = 1, Names = "java", studenId = 1 }).ExecuteCommand(); db.Insertable(new UnitaBookA() { BookId = 2, Names = "c#2", studenId = 2 }).ExecuteCommand(); db.Insertable(new UnitaBookA() { BookId = 3, Names = "c#1", studenId = 2 }).ExecuteCommand(); db.Insertable(new UnitaBookA() { BookId = 4, Names = "php", studenId = 3 }).ExecuteCommand(); db.Insertable(new UnitaBookA() { BookId = 5, Names = "js", studenId = 4 }).ExecuteCommand(); db.Insertable(new UnitaBookA() { BookId = 6, Names = "北大jack", studenId = 1 }).ExecuteCommand(); var list =db.Queryable() .Includes(x => x.SchoolA).Where(x=>x.SchoolA.School_Name!=null).ToList(); var list2 = db.Queryable() .Includes(x => x.Books).Where(x=>x.Books.Any()).ToList(); } public class UnitaStudentA { public int StudentId { get; set; } public string Name { get; set; } [SugarColumn(IsNullable = true)] public int? SchoolId { get; set; } [Navigate(NavigateType.OneToOne, nameof(SchoolId),nameof(UnitaSchoolA.SchoolId))] public UnitaSchoolA SchoolA { get; set; } [Navigate(NavigateType.OneToMany, nameof(UnitaBookA.studenId),nameof(StudentId))] public List Books { get; set; } } public class UnitaSchoolA { public int SchoolId { get; set; } [SugarColumn(IsNullable = true)] public int CityId { get; set; } [SugarColumn(ColumnName = "SchoolName")] public string School_Name { get; set; } } public class UnitaBookA { [SugarColumn(IsPrimaryKey = true)] public int BookId { get; set; } [SugarColumn(ColumnName = "Name")] public string Names { get; set; } public int studenId { get; set; } } } }