Split table

Src/Asp.Net/SqlServerTest/Demo/DemoN_SplitTable.cs

@@ -24,9 +24,12 @@ namespace OrmTest
             {
                 Console.WriteLine(s);
             };
+
             db.CodeFirst.SplitTables().InitTables<OrderSpliteTest>();
             var list=db.Queryable<OrderSpliteTest>().SplitTable(tabs => tabs.Take(3)).ToList();
 
+            var list2 = db.Queryable<OrderSpliteTest>().SplitTable(tabs => tabs.Where(it=> it.Date>=DateTime.Now.AddYears(-2))).ToList();
+
             var x = db.Deleteable<OrderSpliteTest>().Where(it=>it.Pk==Guid.NewGuid()).SplitTable(tabs => tabs.Take(3)).ExecuteCommand();
 
             var x2 = db.Updateable<OrderSpliteTest>()
@@ -34,6 +37,9 @@ namespace OrmTest
                 .Where(it => it.Pk == Guid.NewGuid())
                 .SplitTable(tabs => tabs.Take(3))
                 .ExecuteCommand();
+
+            var x3 = db.Insertable(new OrderSpliteTest() { Name="A" }).SplitTable(SplitType.Day).ExecuteCommand();
+            var x4 = db.Insertable(new OrderSpliteTest() { Name = "A" }).SplitTable(SplitType.Day,it=>it.Time).ExecuteCommand();
             Console.WriteLine("#### CodeFirst end ####");
         }
 
@@ -43,6 +49,8 @@ namespace OrmTest
             [SugarColumn(IsPrimaryKey =true)]
             public  Guid  Pk{ get; set; }
             public string Name { get; set; }
+            [SugarColumn(IsNullable =true)]
+            public DateTime Time { get; set; }
         }
     }
 }

Src/Asp.Net/SqlSugar/Abstract/InsertableProvider/InsertableProvider.cs

@@ -406,6 +406,20 @@ namespace SqlSugar
             result.AddSubList(tree);
             return result;
         }
+        public SplitInsertable SplitTable(SplitType splitType)
+        {
+            throw new NotImplementedException();
+        }
+
+        public SplitInsertable SplitTable(SplitType splitType, Expression<Func<T, DateTime>> splitFieldName)
+        {
+            throw new NotImplementedException();
+        }
+
+        public SplitInsertable SplitTable(SplitType splitType, Expression<Func<T, DateTime?>> splitFieldName)
+        {
+            throw new NotImplementedException();
+        }
 
         #endregion
 

Src/Asp.Net/SqlSugar/Abstract/InsertableProvider/SplitInsertable.cs

@@ -8,6 +8,9 @@ namespace SqlSugar
 {
     public class SplitInsertable
     {
-
+        public object ExecuteCommand()
+        {
+            throw new NotImplementedException();
+        }
     }
 }

Src/Asp.Net/SqlSugar/Interface/Insertable.cs

@@ -46,7 +46,9 @@ namespace SqlSugar
         MySqlBlukCopy<T> UseMySql();
         OracleBlukCopy UseOracle();
 
-        //SplitInsertable SplitTable(SplitType splitType);
+        SplitInsertable SplitTable(SplitType splitType);
+        SplitInsertable SplitTable(SplitType splitType,Expression<Func<T,DateTime>> splitFieldName);
+        SplitInsertable SplitTable(SplitType splitType, Expression<Func<T, DateTime?>> splitFieldName);
 
         void AddQueue();
 

Src/Asp.Net/SqlSugar/SpliteTable/SplitHelper.cs

@@ -11,6 +11,39 @@ namespace SqlSugar
     {
         public SqlSugarProvider Context { get; set; }
         public EntityInfo EntityInfo { get; set; }
+        public DateTime GetTableGetDate(DateTime time,SplitType type) 
+        {
+            switch (type)
+            {
+                case SplitType.Day:
+                    return Convert.ToDateTime(time.ToString("yyyy-MM-dd"));
+                case SplitType.Week:
+                    return GetMondayDate(time);
+                case SplitType.Month:
+                    return Convert.ToDateTime(time.ToString("yyyy-MM-01"));
+                case SplitType.Season:
+                    if (time.Month <= 3) 
+                    {
+                        return Convert.ToDateTime(time.ToString("yyyy-01-01"));
+                    }
+                    else if (time.Month <= 6)
+                    {
+                        return Convert.ToDateTime(time.ToString("yyyy-04-01"));
+                    }
+                    else  if (time.Month <= 9)
+                    {
+                        return Convert.ToDateTime(time.ToString("yyyy-07-01"));
+                    }
+                    else
+                    {
+                        return Convert.ToDateTime(time.ToString("yyyy-10-01"));
+                    }
+                case SplitType.Year:
+                    return Convert.ToDateTime(time.ToString("yyyy-01-01"));
+                default:
+                    throw new Exception($"SplitType paramter error ");
+            }
+        }
         public List<SplitTableInfo> GetTables()
         {
 
@@ -120,5 +153,30 @@ namespace SqlSugar
             Check.Exception(Regex.IsMatch(dbTableName, @"\d\{|\}\d"), ErrorMessage.GetThrowMessage(" '{{' or  '}}'  can't be numbers nearby", "占位符相令一位不能是数字,比如 : 1{{day}}2 错误 , 正确: 1_{{day}}_2"));
         }
         #endregion
+
+        #region 得到一周的周一和周日的日期
+        public static DateTime GetMondayDate()
+        {
+            return GetMondayDate(DateTime.Now);
+        }
+        public static DateTime GetSundayDate()
+        {
+            return GetSundayDate(DateTime.Now);
+        }
+        public static DateTime GetMondayDate(DateTime someDate)
+        {
+            int i = someDate.DayOfWeek - DayOfWeek.Monday;
+            if (i == -1) i = 6;  
+            TimeSpan ts = new TimeSpan(i, 0, 0, 0);
+            return someDate.Subtract(ts);
+        }
+        public static DateTime GetSundayDate(DateTime someDate)
+        {
+            int i = someDate.DayOfWeek - DayOfWeek.Sunday;
+            if (i != 0) i = 7 - i; 
+            TimeSpan ts = new TimeSpan(i, 0, 0, 0);
+            return someDate.Add(ts);
+        }
+        #endregion
     }
 }

Src/Asp.Net/SqlSugar/SpliteTable/SplitType.cs

@@ -10,6 +10,8 @@ namespace SqlSugar
     {
        Day=0,
        Week=1,
-       Month=1
+       Month =2,
+       Season=3,
+       Year=4
     }
 }