SqlSugar/Src/Asp.Net/SqlServerTest/Demo/Demo1_Queryable.cs

using SqlSugar;
using System;
using System.Collections.Generic;
using System.Data;
using System.Dynamic;
using System.Linq;
using System.Text;
namespace OrmTest
{
    public class Demo1_Queryable
    {

        public static void Init()
        {
            EasyExamples();
            QueryConditions();
            JoinTable();
            Async();
            NoEntity();
            Mapper();
            SqlFuncTest();
            Subquery();
            ReturnType();
            ConfiQuery();
        }



        private static void EasyExamples()
        {
            Console.WriteLine("");
            Console.WriteLine("#### Examples Start ####");
            var db = GetInstance();
            var dbTime = db.GetDate();
            var getFirst = db.Queryable<Order>().OrderBy(x => Convert.ToInt32(x.Price), OrderByType.Asc).First();
            var getAll = db.Queryable<Order>().Where(it => SqlFunc.EqualsNull(it.Name, null)).ToList();
            var getOrderBy = db.Queryable<Order>().OrderBy(it => it.Name, OrderByType.Desc).ToList();
            var getOrderBy2 = db.Queryable<Order>().OrderBy(it => it.Id).OrderBy(it => it.Name, OrderByType.Desc).ToList();
            var getOrderBy3 = db.Queryable<Order>().OrderBy(it => new { it.Name, it.Id }).ToList();
            var getOrderBy4 = db.Queryable<Order>().OrderBy(it => new { it.CreateTime.Day,it.CreateTime.Year}).ToList();
            var getRandom = db.Queryable<Order>().OrderBy(it => SqlFunc.GetRandom()).First();
            var getByPrimaryKey = db.Queryable<Order>().InSingle(2);
            var getSingleOrDefault = db.Queryable<Order>().Where(it => it.Id == 1).Single();
            var getFirstOrDefault = db.Queryable<Order>().First();
            var getByWhere = db.Queryable<Order>().Where(it => it.Id == 1 || it.Name == "a").ToList();
            var getByWhere2 = db.Queryable<Order>().Where(it => it.Id == DateTime.Now.Year).ToList();
            var getByFuns = db.Queryable<Order>().Where(it => SqlFunc.IsNullOrEmpty(it.Name)).ToList();
            var getByFuns2 = db.Queryable<Order>().GroupBy(it => it.Name).Select(it => SqlFunc.AggregateDistinctCount(it.Price)).ToList();
            var getDicionary = db.Queryable<Order>().ToDictionary(it => it.Id, it => it.Name);
            var getDicionaryList = db.Queryable<Order>().ToDictionaryList();
            var getTest = db.Queryable<Order>().Where(it => string.IsNullOrWhiteSpace(it.Name)).ToList();
            var test01 = db.Queryable<Order>().PartitionBy(it => it.Id).ToList();
            var q1 = db.Queryable<Order>().Take(1);
            var q2 = db.Queryable<Order>().Take(2);
            var test02 = db.Union(q1, q2).ToList();
            var test03 = db.Queryable<Order>().Take(1).ToList();
            var dp = DateTime.Now;
            var test05 = db.Queryable<Order>().Where(it => it.CreateTime.Month == dp.Month).ToList();
            var test06 = db.Queryable<Order>()
                   .ToPivotTable(it => it.Id, it => it.Name, it => it.Sum(x => x.Price));

            var test07 = db.Queryable<Order>()
            .ToPivotList(it => it.Id, it => it.Name, it => it.Sum(x => x.Price));

            var test08 = db.Queryable<Order>()
            .ToPivotJson(it => it.Id, it => it.Name, it => it.Sum(x => x.Price));

            var test09 = db.Queryable<Order>().PartitionBy(it => it.Id).ToPageListAsync(1, 2, 0);
            test09.Wait();

            int c = 0;
            var test10 = db.Queryable<Order>().ToPageList(1, 2, ref c);
            var test11 = db.Queryable<Order>().GroupBy(it => new { it.CreateTime.Year }).Select(it => it.CreateTime.Year).ToList();
            var test12 = db.Queryable<Order>().GroupBy(it => it.CreateTime.Date).Select(it => it.CreateTime.Date).ToList();
            var test13 = db.Queryable<Order>().GroupBy(it => new { it.CreateTime.Date, it.CreateTime.Year, it.CreateTime.Minute })
                .Select(it => new { it.CreateTime.Date, it.CreateTime.Year, it.CreateTime.Minute }).ToList();
            var test14 = db.Queryable<Order>()
                .GroupBy(it => it.CreateTime.Year)
                 .GroupBy(it => it.CreateTime.Second)
                     .GroupBy(it => it.CreateTime.Date)
                .Select(it => new
                {
                    it.CreateTime.Year,
                    it.CreateTime.Second,
                    it.CreateTime.Date
                }).ToList();
            var test15 = db.Queryable<Order, Order>((o, i) => new JoinQueryInfos(
              JoinType.Left, o.Name == SqlFunc.ToString(SqlFunc.MergeString(",", i.Name, ","))
            ))
            .Select<ViewOrder>().ToList();
            var test16 = db.Queryable<Order>().Select(it => SqlFunc.SqlServer_DateDiff("day", DateTime.Now.AddDays(-1), DateTime.Now)).ToList();
            var test17 =
               db.Queryable<Order>()
               .Select<Order>()
               .MergeTable()
              .Select(it => new ViewOrder()
              {
                  Name = SqlFunc.Subqueryable<Order>().WithNoLock().Select(s => s.Name)
              }).ToList(); ;
            var test18 = db.UnionAll(
               db.Queryable<Order>(),
               db.Queryable<Order>()
              )
              .Select(it => new ViewOrder()
              {
                  Name = SqlFunc.Subqueryable<Order>().Select(s => s.Name)
              }).ToList();
            var test19 = db.Queryable<Order>().Select<ViewOrder>().ToList();
            var test20 = db.Queryable<Order>().LeftJoin<Custom>((o, cs) => o.Id == cs.Id)
                .ToDictionary(it => it.Id, it => it.Name);

            var test21 = db.Queryable<Order>().Where(it => it.Id.ToString() == 1.ToString()).Select(it => it.CreateTime.ToString("24")).First();
            var test22 = db.Queryable<Order>().Where(it => it.Id.ToString() == 1.ToString()).Select(it => SqlFunc.AggregateDistinctCount(it.CreateTime)).First();
            var test23 = db.Queryable<Order>().Where(it => true).Select(it => new { x1 = it.CreateTime.ToString("yyyy-MM"), it.CreateTime }).ToList();
            var test24 = db.Queryable<Order>().Where(it => true).Select(it => new { x1 = it.CreateTime.ToString("yyyy-MM-dd _ HH _ mm _ ss "), it.CreateTime }).ToList();
            var test25 = db.Queryable<Order>().Where(it => true).Select(it => new { x1 = it.CreateTime.Month, x2 = DateTime.Now.Month }).ToList();
            var test26 = db.Queryable<Order>().Where(it => true).Select(it => new { x1 = it.CreateTime.Day, x2 = DateTime.Now.Day }).ToList();
            var test27 = db.Queryable<Order>().Where(it => true).Select(it => new { x1 = it.CreateTime.Year, x2 = DateTime.Now.Year }).ToList();
            var test28 = db.Queryable<Order>().Select(it => SqlFunc.DateDiff(DateType.Day, Convert.ToDateTime("2021-1-1"), Convert.ToDateTime("2021-1-12"))).ToList();
            var test29 = db.Queryable<Order>().Select(it => new { x = SqlFunc.LessThan(1, 2) }).ToList();
            var test30 = db.Queryable<Order>().Select(it => new { x = SqlFunc.LessThanOrEqual(1, 2) }).ToList();
            var test31 = db.Queryable<Order>().Select(it => new { x = SqlFunc.GreaterThan(1, 2) }).ToList();
            var test32 = db.Queryable<Order>().Select(it => new { x = SqlFunc.GreaterThanOrEqual(1, 2) }).ToList();
            List<Order> result = new List<Order>();
            db.Queryable<Order>().ForEach(it =>
            {
                result.Add(it);

            }, 10);
            result = new List<Order>();
            int count = 0;
            db.Queryable<Order>().ForEachByPage(it =>
            {
                result.Add(it);

            }, 2, 10, ref count, 5);
            var test33 = db.Queryable<Order>().ToList();
            db.CurrentConnectionConfig.SqlMiddle = new SqlMiddle
            {
                IsSqlMiddle = true,
                ExecuteCommand = (s, p) => { return s.Length; }

            };
            var five = db.Ado.ExecuteCommand("11111");
            db.CurrentConnectionConfig.SqlMiddle = null;
            db.GetConnectionWithAttr<Order>().Queryable<Order>().ToList();
            var test34 = db.Queryable<Order>().OrderBy(it => new
            {
                id = it.Id,
                name = SqlFunc.Asc(it.Name),
            }).ToList();
            var dr = new Dictionary<string, object>();
            dr.Add("Id", 1);
            dr.Add("Name", "2");
            var dr2 = new Dictionary<string, object>();
            dr2.Add("Id", 2);
            dr2.Add("Name", "2");
            var test35 = db.Queryable<object>().AS("[order]").WhereColumns(new List<Dictionary<string, object>>() { dr, dr2 }).ToDataTable();
            var test36 = db.Queryable<Order>().Take(1).ToList();
            var test37 = db.Queryable<Order>().First();
            var test38 = db.Queryable<Order>().Take(2).ToList();
            var test39 = db.Queryable<Order>().Take(1).OrderBy(it => it.Id).ToList();
            var test40 = db.Queryable<Order>().OrderBy(it => it.Id).First();
            var test41 = db.Queryable<Order>().Take(2).OrderBy(it => it.Id).ToList();
            var test42 = db.Queryable<Order>().Take(2).OrderBy(it => it.Id).ToPageList(1, 2);
            var test43 = db.Queryable<Order>().Take(2).ToPageList(1, 2);
            Dictionary<string, object> whereDc = new Dictionary<string, object>();
            whereDc.Add("id", 1);
            whereDc.Add("name", null);
            var test44 = db.Queryable<Order>().WhereColumns(new List<Dictionary<string, object>>() {
            whereDc
            }).ToList();
            var test45 = db.Queryable<Order>().
              Where(it => it.Price == 0 ? true : it.Name == it.Name)
              .ToList();
            var num = 3;
            var test46 = db.Queryable<Order>()
              .Where(it => -it.Id == 1)
              .Where(it => DateTime.Now.AddDays(-num) == DateTime.Now.Date)
              .ToList();

           var subQueryable= db.Queryable<Order>().Select(z=>new { id=z.Id});
           var list= db.Queryable(subQueryable)
                .LeftJoin<OrderItem>((x, y) => x.id == y.OrderId)
                .ToList();

            var test47 = db.Queryable<Order>().Select(it => new
            {
                names = SqlFunc.Subqueryable<Order>().Where(z=>z.Id==it.Id).SelectStringJoin(z => z.Name, ","),
                 disCount = SqlFunc.Subqueryable<Order>().DistinctCount(z=>z.Id)
            })
           .ToList();

            var test48 = db.Queryable<Order>().Select(it => new
            {
                count = SqlFunc.RowCount(),
                index = SqlFunc.RowNumber(it.Name),
                index2 = SqlFunc.RowNumber(it.Id,it.Name)
            })
           .ToList();
            var test49 = db.Queryable<Order>().Select(it => new
            {
                index = SqlFunc.RowNumber($"{it.Name} asc,{it.Id} desc", $"{it.Id},{it.Name}")
            })
            .ToList();

            var test50 = db.Queryable<Order>()
            .GroupBy(z => z.Id).Select(it => new { disCount = SqlFunc.IsNull(SqlFunc.Subqueryable<Order>().Where(z => z.Id == it.Id).Select(z => z.Name), "") })
            .ToList();

            var dr3 = new Dictionary<string, object>();
            dr3.Add("Id", 0);
            dr3.Add("Name", null);
            db.Queryable<Order>().WhereColumns(dr3, true).ToList();
            var ids = new string[] { "a", "c" };
            var NIds = db.Queryable<Order>().Where(it => ids.Contains(it.Name, true)).ToList();
            var Ids = db.Queryable<Order>().Where(it => ids.Contains(it.Name, false)).ToList();
            var Ids2 = db.Queryable<Order>().Where(it => ids.Contains(it.Name)).ToList();
            Console.WriteLine("#### Examples End ####");
        }

        private static void ReturnType()
        {
            Console.WriteLine("");
            Console.WriteLine("#### ReturnType Start ####");
            var db = GetInstance();
            List<Order> list = db.Queryable<Order>().ToList();

            var x2 = db.Ado.SqlQueryAsync<Order>("select * from [Order] ");
            x2.Wait();
            var x22 = db.Ado.GetScalarAsync("select * from [Order] ");
            x22.Wait();
            var x222 = db.Ado.ExecuteCommandAsync("select * from [Order] ");
            x222.Wait();
            Order item = db.Queryable<Order>().First(it => it.Id == 1);

            DataTable dataTable = db.Queryable<Order>().Select(it => it.Id).ToDataTable();

            var json = db.Queryable<Order>().ToJson();

            List<int> listInt = db.Queryable<Order>().Select(it => it.Id).ToList();

            var dynamic = db.Queryable<Order>().Select<dynamic>().ToList();

            var viewModel = db.Queryable<Order, OrderItem, Custom>((o, i, c) => new JoinQueryInfos(
                    JoinType.Left, o.Id == i.OrderId,
                    JoinType.Left, o.CustomId == c.Id
                ))
                .Select<ViewOrder>().ToList();

            var newDynamic = db.Queryable<Order, OrderItem, Custom>((o, i, c) => new JoinQueryInfos(
                   JoinType.Left, o.Id == i.OrderId,
                   JoinType.Left, o.CustomId == c.Id
               ))
                .Select((o, i, c) => new { orderName = o.Name, cusName = c.Name }).ToList();

            var newClass = db.Queryable<Order, OrderItem, Custom>((o, i, c) => new JoinQueryInfos(
                   JoinType.Left, o.Id == i.OrderId,
                   JoinType.Left, o.CustomId == c.Id
               ))
                .Select((o, i, c) => new ViewOrder { Name = o.Name, CustomName = c.Name }).ToList();


            var oneClass = db.Queryable<Order, OrderItem, Custom>((o, i, c) => new JoinQueryInfos(
              JoinType.Left, o.Id == i.OrderId,
              JoinType.Left, o.CustomId == c.Id
            ))
           .Select((o, i, c) => c).ToList();

            var twoClass = db.Queryable<Order, OrderItem, Custom>((o, i, c) => new JoinQueryInfos(
            JoinType.Left, o.Id == i.OrderId,
            JoinType.Left, o.CustomId == c.Id
            ))
           .Select((o, i, c) => new { o, i }).ToList();

            List<Dictionary<string, object>> ListDic = db.Queryable<Order, OrderItem, Custom>((o, i, c) => new JoinQueryInfos(
                  JoinType.Left, o.Id == i.OrderId,
                  JoinType.Left, o.CustomId == c.Id
                ))
                .Select<ExpandoObject>().ToList().Select(it => it.ToDictionary(x => x.Key, x => x.Value)).ToList();
            Console.WriteLine("#### ReturnType End ####");
        }

        private static void Subquery()
        {
            Console.WriteLine("");
            Console.WriteLine("#### Subquery Start ####");
            var db = GetInstance();

            var list = db.Queryable<Order>().Take(10).Select(it => new
            {
                customName = SqlFunc.Subqueryable<Custom>().Where("it.CustomId=id").Select(s => s.Name),
                customName2 = SqlFunc.Subqueryable<Custom>().Where("it.CustomId = id").Where(s => true).Select(s => s.Name)
            }).ToList();

            var list1 = db.Queryable<Order>().Select(it => new
            {
                id = SqlFunc.Subqueryable<Custom>().Where(s => s.Id == 1).Sum(s => s.Id) * 1
            }).ToList();

            var list2 = db.Queryable<Order>().Where(it =>
            SqlFunc.Subqueryable<OrderItem>()
             .LeftJoin<OrderItem>((i, z) => i.ItemId == z.ItemId)
             .InnerJoin<OrderItem>((i, z, y) => i.ItemId == z.ItemId)
             .InnerJoin<OrderItem>((i, z, y, h) => i.ItemId == z.ItemId)
             .InnerJoin<OrderItem>((i, z, y, h, n) => i.ItemId == z.ItemId)
             .Where((i, z) => i.ItemId == z.ItemId)
             .Any()
            ).ToList();

            var list3 = db.Queryable<Order>().Select(it => new
            {
                customName = SqlFunc.Subqueryable<Custom>().Where(s => s.Id == it.CustomId).GroupBy(s => s.Name).Having(s => SqlFunc.AggregateCount(s.Id) > 0).Select(s => s.Name)
            }).ToList();


            var exp = Expressionable.Create<Custom>().And(s => s.Id == 1).ToExpression();
            var list4 = db.Queryable<Order>().Select(it => new
            {
                customName = SqlFunc.Subqueryable<Custom>().Where(exp).Where(exp).GroupBy(s => s.Name).Having(s => SqlFunc.AggregateCount(s.Id) > 0).Select(s => s.Name)
            }).ToList();




            var list5 = db.Queryable<Order>().Where(it =>
        SqlFunc.Subqueryable<OrderItem>()
         .LeftJoin<OrderItem>((i, y) => i.ItemId == y.ItemId)
         .InnerJoin<OrderItem>((i, z) => i.ItemId == z.ItemId)
         .Where(i => i.ItemId == 1)
          .Any()
        ).ToList();

            var list6 = db.Queryable<Order>() .Select(it => new
            {
                customName = SqlFunc.Subqueryable<Custom>()
                .Where(s => s.Id == it.CustomId).Count()
            }).ToList();
            Console.WriteLine("#### Subquery End ####");
        }

        private static void SqlFuncTest()
        {
            Console.WriteLine("");
            Console.WriteLine("#### SqlFunc Start ####");
            var db = GetInstance();
            var index = db.Queryable<Order>().Select(it => SqlFunc.CharIndex("a", "cccacc")).First();
            var list = db.Queryable<Order>().Select(it => new ViewOrder()
            {

                Id = SqlFunc.AggregateSum(SqlFunc.IF(it.Id > 0).Return(1).End(0))
            }).ToList();
            var list2 = db.Queryable<Order>().Where(it => it.CreateTime.Date == it.CreateTime).Select(it => new
            {
                date = it.CreateTime.Date,
                datetime = DateTime.Now.Date
            }).ToList();
            var list3 = db.Queryable<Order>().InnerJoin<Order>((it,o)=>it.Id==o.Id).Where(it => it.CreateTime.Date == it.CreateTime).Select(it => new
            {
                num = SqlFunc.IF(SqlFunc.Subqueryable<Order>().Count() > 0)
                 .Return(1)
                 .ElseIF(SqlFunc.Subqueryable<Order>().Count() > 0)
                 .Return(it.Id)
                 .End(1)
            }).ToList();
            Console.WriteLine("#### SqlFunc  End ####");
        }

        private static void Mapper()
        {
            Console.WriteLine("");
            Console.WriteLine("#### Mapper Start ####");
            var db = GetInstance();
            //Creater Table
            db.CodeFirst.InitTables(typeof(Tree));
            db.DbMaintenance.TruncateTable("tree");
            db.Insertable(new Tree() { Id = 1, Name = "root" }).ExecuteCommand();
            db.Insertable(new Tree() { Id = 11, Name = "child1", ParentId = 1 }).ExecuteCommand();
            db.Insertable(new Tree() { Id = 12, Name = "child2", ParentId = 1 }).ExecuteCommand();
            db.Insertable(new Tree() { Id = 2, Name = "root" }).ExecuteCommand();
            db.Insertable(new Tree() { Id = 22, Name = "child3", ParentId = 2 }).ExecuteCommand();

            // Same property name mapping,Both entities have parentId
            var list = db.Queryable<Tree>().Mapper(it => it.Parent, it => it.ParentId).ToList();


            //If both entities have parentId, I don't want to associate with parentId.
            var list1 = db.Queryable<Tree>()
                                     //parent=(select * from parent where id=it.parentid)
                                     .Mapper(it => it.Parent, it => it.ParentId, it => it.Parent.Id)
                                     //Child=(select * from parent where ParentId=it.id)
                                     .Mapper(it => it.Child, it => it.Id, it => it.Parent.ParentId)
                                     .ToList();


            db.Insertable(new Tree() { Id = 222, Name = "child11", ParentId = 11 }).ExecuteCommand();
            var tree = db.Queryable<Tree>().ToTree(it => it.Child, it => it.ParentId, 0);
            var tree2 = db.Queryable<Tree2>().ToTree(it => it.Child, it => it.ParentId, 0);
            var allchilds = db.Queryable<Tree>().ToChildList(it => it.ParentId, 0);
            var allchilds_2 = db.Queryable<Tree2>().ToChildList(it => it.ParentId, 0);
            var allchilds1 = db.Queryable<Tree>().ToChildList(it => it.ParentId, 1);
            var allchilds11 = db.Queryable<Tree>().Select<Tree2>().ToChildList(it => it.ParentId, 1);
            var allchilds2 = db.Queryable<Tree>().ToChildList(it => it.ParentId, 2);
            var allchilds2_2 = db.Queryable<Tree2>().ToChildList(it => it.ParentId, 2);
            var parentList = db.Queryable<Tree>().ToParentList(it => it.ParentId, 22);
            var parentList2 = db.Queryable<Tree>().ToParentList(it => it.ParentId, 222);
            var parentList22 = db.Queryable<Tree2>().ToParentList(it => it.ParentId, 222);
            var parentList3 = db.Queryable<Tree>().ToParentList(it => it.ParentId, 2);


            //one to one
            var list2 = db.Queryable<OrderItemInfo>().Mapper(it => it.Order, it => it.OrderId).ToList();

            //one to many
            var list3 = db.Queryable<Order>().Mapper(it => it.Items, it => it.Items.First().OrderId).ToList();

            //many to many
            db.CodeFirst.InitTables<A, B, ABMapping>();

            db.Insertable(new A() { Name = "A" }).ExecuteCommand();
            db.Insertable(new B() { Name = "B" }).ExecuteCommand();
            db.Insertable(new ABMapping() { AId = 1, BId = 1 }).ExecuteCommand();

            var list4 = db.Queryable<ABMapping>()
              .Mapper(it => it.A, it => it.AId)
              .Mapper(it => it.B, it => it.BId).ToList();

            //Manual mode
            var result = db.Queryable<OrderInfo>().Take(10).Select<ViewOrder>().Mapper((itemModel, cache) =>
            {
                var allItems = cache.Get(orderList =>
                {
                    var allIds = orderList.Select(it => it.Id).ToList();
                    return db.Queryable<OrderItem>().Where(it => allIds.Contains(it.OrderId)).ToList();//Execute only once
                });
                itemModel.Items = allItems.Where(it => it.OrderId == itemModel.Id).ToList();//Every time it's executed
            }).ToList();
            db.CodeFirst.InitTables<Tree>();
            //无限级高性能导航映射
            var treeRoot = db.Queryable<Tree>().Where(it => it.Id == 1).ToList();
            db.ThenMapper(treeRoot, item =>
            {
                item.Child = db.Queryable<Tree>().SetContext(x => x.ParentId, () => item.Id, item).ToList();
            });
            db.ThenMapper(treeRoot.SelectMany(it => it.Child), it =>
              {
                  it.Child = db.Queryable<Tree>().SetContext(x => x.ParentId, () => it.Id, it).ToList();
              });
            db.ThenMapper(treeRoot.SelectMany(it => it.Child).SelectMany(it => it.Child), it =>
              {
                  it.Child = db.Queryable<Tree>().SetContext(x => x.ParentId, () => it.Id, it).ToList();
              });
            db.ThenMapper(treeRoot.SelectMany(it => it.Child).SelectMany(it => it.Child).SelectMany(it => it.Child), it =>
            {
                it.Child = db.Queryable<Tree>().SetContext(x => x.ParentId, () => it.Id, it).ToList();
            });
            Console.WriteLine("#### End Start ####");
        }

        private static void NoEntity()
        {
            Console.WriteLine("");
            Console.WriteLine("#### No Entity Start ####");
            var db = GetInstance();

            var list = db.Queryable<dynamic>().AS("order ").Where("id=id", new { id = 1 }).ToList();

            var list2 = db.Queryable<dynamic>("o").AS("order").AddJoinInfo("OrderDetail", "i", "o.id=i.OrderId").Where("id=id", new { id = 1 }).Select("o.*").ToList();
            Console.WriteLine("#### No Entity End ####");
        }

        private static void JoinTable()
        {
            Console.WriteLine("");
            Console.WriteLine("#### Join Table Start ####");
            var db = GetInstance();

            //Simple join
            var list = db.Queryable<Order, OrderItem, Custom>((o, i, c) => o.Id == i.OrderId && c.Id == o.CustomId)
                         .Select<ViewOrder>()
                         .ToList();

            //Join table
            var list2 = db.Queryable<Order, OrderItem, Custom>((o, i, c) => new JoinQueryInfos(
             JoinType.Left, o.Id == i.OrderId,
             JoinType.Left, c.Id == o.CustomId
            ))
           .Select<ViewOrder>().ToList();

            //Join queryable
            var query1 = db.Queryable<Order, OrderItem>((o, i) => new JoinQueryInfos(
              JoinType.Left, o.Id == i.OrderId
            ))
            .Where(o => o.Name == "jack");

            var query2 = db.Queryable<Custom>();
            var list3 = db.Queryable(query1, query2, JoinType.Left, (p1, p2) => p1.CustomId == p2.Id).Select<ViewOrder>().ToList();


            var query3 = db.Union(
                                   db.Queryable<Order>().Where(it => it.Name.Contains("a")),
                                   db.Queryable<Order>().Where(it => it.Name.Contains("b"))
                                 ).ToList();



            var query4 = db.Queryable<Order, OrderItem, Custom>(
                              db.Queryable<Order>().Where(it => it.Name.Contains("a")),
                              db.Queryable<OrderItem>().Where(it => it.CreateTime > DateTime.Now),
                              db.Queryable<Custom>().Where(it => it.Name.Contains("b")),
                              JoinType.Left, (o, i, c) => o.Id == i.OrderId,
                              JoinType.Left, (o, i, c) => o.CustomId == c.Id

                            ).Select(o => o).ToList();

            var query51 = db.Queryable<Order>("order")
             .InnerJoin<Custom>((o, cus) => o.CustomId == cus.Id)
             .InnerJoin<OrderItem>((o, cus, oritem) => o.Id == oritem.OrderId)
             .Where((o) => o.Id == 1)
             .Select((o, cus) => new ViewOrder { Id = o.Id, CustomName = cus.Name })
             .ToList();

            var query5 =  db.SqlQueryable<Order>("select * from [order]")
                            .InnerJoin<Custom>((o, cus) => o.CustomId == cus.Id)
                            .InnerJoin<OrderItem>((o, cus, oritem) => o.Id == oritem.OrderId)
                            .Where((o) => o.Id == 1)
                            .Select((o, cus) => new ViewOrder { Id = o.Id, CustomName = cus.Name })
                            .ToList();

            var query52 = db.Queryable<Order>().Where(it=>it.Id==1)
                                   .InnerJoin<Custom>((o, cus) => o.CustomId == cus.Id)
                                   .InnerJoin<OrderItem>((o, cus, oritem) => o.Id == oritem.OrderId)
                                   .Where((o) => o.Id == 1)
                                   .Select((o, cus) => new ViewOrder { Id = o.Id, CustomName = cus.Name })
                                   .ToList();

            var query53 = db.Queryable( db.Queryable<Order>().Where(it => it.Id == 1))
                             .InnerJoin<Custom>((o, cus) => o.CustomId == cus.Id)
                             .InnerJoin<OrderItem>((o, cus, oritem) => o.Id == oritem.OrderId)
                             .Where((o) => o.Id == 1)
                             .Select((o, cus) => new ViewOrder { Id = o.Id, CustomName = cus.Name })
                             .ToList();

            var query6 = db.Queryable(db.Queryable<Order>()).LeftJoin<OrderItem>((m, i) => m.Id == i.OrderId)
                .ToList();


            var query7 = db.Queryable(db.Queryable<Order>().Select<Order>().MergeTable()).LeftJoin<OrderItem>((m, i) => m.Id == i.OrderId)
                .ToList();


            var query8 = db.Queryable<Order>()
                .LeftJoin(db.Queryable<Custom>().Where(it => it.Id == 1), (o, i) => o.CustomId == i.Id)
                .LeftJoin(db.Queryable<OrderItem>().Where(it => it.OrderId == 2), (o, i, item) => item.OrderId == o.Id)
                .LeftJoin(db.Queryable<Order>().Where(it => it.Id > 0), (o, i, item, od) => od.Id == o.Id)
                .Select(o => o).ToList();

            var query9 = db.Queryable<Order>()
                 .Where(m => m.Id == SqlFunc.Subqueryable<Order>()
                 .Where(z => z.Id == m.Id).GroupBy(z => z.Id).Select(z => z.Id))
                 .ToList();

            var query10 = db.Queryable(db.Queryable<Order>())
                .LeftJoin<OrderItem>((m, i) => m.Id == i.OrderId)
                .Where(m => m.Id == SqlFunc.Subqueryable<Order>()
                .Where(z => z.Id == m.Id).GroupBy(z => z.Id).Select(z => z.Id))
                .ToList();
            var q2 = db.Queryable<Order>().Select(z => new { id = z.Id }).ToList();


            db.Queryable<Order>()
                .Select(it => new { id = it.Id })
                .MergeTable()//合并成一个表 和 OrderItem 进行JOIN
                .LeftJoin<OrderItem>((x, y) => x.id == y.ItemId)
                .Select((x, y) => new {xid=x.id,yid=y.ItemId})
                .MergeTable()//合并成一个表 和 OrderItem 进行JOIN
                .LeftJoin<OrderItem>((x,y)=>x.yid==y.ItemId)// 最后一个表不是匿名对象就行
                .ToList();

           db.Queryable<Order>()
              .Where(it=>SqlFunc.Collate(it.Name)== "asdfa")
              .Where(m => m.Id == SqlFunc.Subqueryable<Order>()
              .Where(z => z.Id == m.Id).GroupBy(z => z.Id).Select(z =>SqlFunc.AggregateSumNoNull(z.Id)))
              .ToList();
            Console.WriteLine("#### Join Table End ####");
        }

        private static void QueryConditions()
        {
            Console.WriteLine("");
            Console.WriteLine("#### Query Conditions Start ####");

            SqlSugarClient db = GetInstance();

            /*** By expression***/

            //id=@id
            var list = db.Queryable<Order>().Where(it => it.Id == 1).ToList();
            //id=@id or name like '%'+@name+'%'
            var list2 = db.Queryable<Order>().Where(it => it.Id == 1 || it.Name.Contains("jack")).ToList();


            //Create expression 
            var exp = Expressionable.Create<Order>()
                            .And(it => it.Id == 1)
                            .Or(it => it.Name.Contains("jack")).ToExpression();
            var list3 = db.Queryable<Order>().Where(exp).ToList();


            /*** By sql***/

            //id=@id
            var list4 = db.Queryable<Order>().Where("id=@id", new { id = 1 }).ToList();
            //id=@id or name like '%'+@name+'%'
            var list5 = db.Queryable<Order>().Where("id=@id or name like '%'+@name+'%' ", new { id = 1, name = "jack" }).ToList();



            /*** By dynamic***/

            //id=1
            var conModels = new List<IConditionalModel>();
            conModels.Add(new ConditionalModel() { FieldName = "id", ConditionalType = ConditionalType.Equal, FieldValue = "1" });//id=1
            var student = db.Queryable<Order>().Where(conModels).ToList();

            //Complex use case
            List<IConditionalModel> Order = new List<IConditionalModel>();
            conModels.Add(new ConditionalModel() { FieldName = "id", ConditionalType = ConditionalType.Equal, FieldValue = "1" });//id=1
            conModels.Add(new ConditionalModel() { FieldName = "id", ConditionalType = ConditionalType.Like, FieldValue = "1" });// id like '%1%'
            conModels.Add(new ConditionalModel() { FieldName = "id", ConditionalType = ConditionalType.IsNullOrEmpty });
            conModels.Add(new ConditionalModel() { FieldName = "id", ConditionalType = ConditionalType.In, FieldValue = "1,2,3", CSharpTypeName = "int" });
            conModels.Add(new ConditionalModel() { FieldName = "id", ConditionalType = ConditionalType.NotIn, FieldValue = "1,2,3", CSharpTypeName = "int" });
            conModels.Add(new ConditionalModel() { FieldName = "id", ConditionalType = ConditionalType.NoEqual, FieldValue = "1,2,3" });
            conModels.Add(new ConditionalModel() { FieldName = "id", ConditionalType = ConditionalType.IsNot, FieldValue = null });// id is not null

            conModels.Add(new ConditionalCollections()
            {
                ConditionalList = new List<KeyValuePair<WhereType, SqlSugar.ConditionalModel>>()//  (id=1 or id=2 and id=1)
            {
                //new  KeyValuePair<WhereType, ConditionalModel>( WhereType.And ,new ConditionalModel() { FieldName = "id", ConditionalType = ConditionalType.Equal, FieldValue = "1" }),
                new  KeyValuePair<WhereType, ConditionalModel> (WhereType.Or,new ConditionalModel() { FieldName = "id", ConditionalType = ConditionalType.Equal, FieldValue = "2" }),
                new  KeyValuePair<WhereType, ConditionalModel> ( WhereType.And,new ConditionalModel() { FieldName = "id", ConditionalType = ConditionalType.Equal, FieldValue = "2" })
            }
            });
            var list6 = db.Queryable<Order>().Where(conModels).ToList();

            /*** Conditional builder ***/

            // use whereif
            string name = "";
            int id = 1;
            var query = db.Queryable<Order>()
                            .WhereIF(!string.IsNullOrEmpty(name), it => it.Name.Contains(name))
                            .WhereIF(id > 0, it => it.Id == id).ToList();
            //clone new Queryable
            var query2 = db.Queryable<Order>().Where(it => it.Id == 1);
            var list7 = query2.Clone().Where(it => it.Name == "jack").ToList();//id=1 and name = jack
            var list8 = query2.Clone().Where(it => it.Name == "tom").ToList();//id=1 and name = tom

            Console.WriteLine("#### Condition Screening End ####");



        }

        private static void Async()
        {
            Console.WriteLine("");
            Console.WriteLine("#### Async Start ####");

            SqlSugarClient db = GetInstance();
            var task1 = db.Queryable<Order>().FirstAsync();
            task1.Wait();
            var task2 = db.Queryable<Order>().Where(it => it.Id == 1).ToListAsync();


            task2.Wait();

            Console.WriteLine("#### Async End ####");
        }


        private static void ConfiQuery()
        {
            var db = GetInstance();
            List<DataDictionary> datas = new List<DataDictionary>();
            datas.Add(new DataDictionary() { Code = "1", Name = "男", Type = "sex" });
            datas.Add(new DataDictionary() { Code = "2", Name = "女", Type = "sex" });
            datas.Add(new DataDictionary() { Code = "1", Name = "南通市", Type = "city" });
            datas.Add(new DataDictionary() { Code = "2", Name = "苏州市", Type = "city" });
            datas.Add(new DataDictionary() { Code = "1", Name = "江苏省", Type = "province" });
            datas.Add(new DataDictionary() { Code = "2", Name = "湖南省", Type = "province" });
            db.CodeFirst.InitTables<DataDictionary>();
            db.CodeFirst.InitTables<Person>();
            db.DbMaintenance.TruncateTable<DataDictionary>();
            db.Insertable(datas).ExecuteCommand();

            if (!db.ConfigQuery.Any())
            {
                var types = db.Queryable<DataDictionary>().Select(it => it.Type).Distinct().ToList();
                foreach (var type in types)
                {
                    db.ConfigQuery.SetTable<DataDictionary>(it => it.Code, it => it.Name, type, it => it.Type == type);
                }

                db.ConfigQuery.SetTable<Order>(it => it.Id, it => it.Name, "01", it => it.Id > 1);
                db.ConfigQuery.SetTable<Order>(it => it.Id, it => it.Name, "02", it => it.Id > 2);
                db.ConfigQuery.SetTable<Order>(it => it.Id, it => it.Name, null);
            }


            var res = db.Queryable<Person>().Select(it => new Person()
            {
                Id = it.Id.SelectAll(),
                SexName = "(" + it.SexId.GetConfigValue<DataDictionary>("sex") + ")",
                ProviceName = it.SexId.GetConfigValue<DataDictionary>("province"),
                CityName = it.SexId.GetConfigValue<DataDictionary>("city"),
            }).ToList();//也支持支持写在Where或者Orderby

            var list = db.Queryable<OrderItem>().Select(it => new OrderItem
            {
                ItemId = it.ItemId.SelectAll(),
                OrderName = it.OrderId.GetConfigValue<Order>("01")
            }).ToList();
            var list2 = db.Queryable<OrderItem>().Select(it => new OrderItem
            {
                ItemId = it.ItemId.SelectAll(),
                OrderName = it.OrderId.GetConfigValue<Order>("02")
            }).ToList();
            var list3 = db.Queryable<OrderItem>().Select(it => new OrderItem
            {
                ItemId = it.ItemId.SelectAll(),
                OrderName = it.OrderId.GetConfigValue<Order>()
            }).ToList();

            var list4 = db.Queryable<OrderItem>().Select(it => new OrderItem
            {
                ItemId = it.ItemId.SelectAll(),
                OrderName = it.OrderId.GetConfigValue<Order>()
            })
            .Where(it => it.OrderId.GetConfigValue<Order>() == "order1")
            .OrderBy(it => it.OrderId.GetConfigValue<Order>()).ToList();

            var list5 = db.Queryable<Order, OrderItem>((o, i) => o.Id == i.OrderId)
                        .OrderBy((o, i) => i.OrderId.GetConfigValue<Order>(), OrderByType.Desc)
                        .Select<ViewOrder>((o, i) => new ViewOrder()
                        {
                            Id = o.Id.SelectAll(),
                            Name = i.OrderId.GetConfigValue<Order>()
                        })
                        .ToList();
        }
        private static SqlSugarClient GetInstance()
        {
            return new SqlSugarClient(new ConnectionConfig()
            {
                DbType = SqlSugar.DbType.SqlServer,
                ConnectionString = Config.ConnectionString,
                InitKeyType = InitKeyType.Attribute,
                IsAutoCloseConnection = true,
                AopEvents = new AopEvents
                {
                    OnLogExecuting = (sql, p) =>
                    {
                        Console.WriteLine(sql);
                        Console.WriteLine(string.Join(",", p?.Select(it => it.ParameterName + ":" + it.Value)));
                    }
                }
            });
        }
    }
}