Split table

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

@@ -48,10 +48,16 @@ namespace OrmTest
             Console.WriteLine();
 
             var tableName = db.SplitHelper<OrderSpliteTest>().GetTableName(DateTime.Now.AddDays(-1));
+            var tableName2 = db.SplitHelper(new OrderSpliteTest() {  Time=DateTime.Now}).GetTableNames();
+            var tableName3 = db.SplitHelper(new List<OrderSpliteTest> {
+              new OrderSpliteTest() { Time = DateTime.Now },
+              new OrderSpliteTest() { Time = DateTime.Now },
+              new OrderSpliteTest() { Time = DateTime.Now.AddMonths(-10) }
+            }).GetTableNames();
             var x2 = db.Updateable<OrderSpliteTest>()
                 .SetColumns(it=>it.Name=="a")
                 .Where(it => it.Pk == Guid.NewGuid())
-                .SplitTable(tabs => tabs.InTableNames(tableName))
+                .SplitTable(tabs => tabs.InTableNames(tableName2))
                 .ExecuteCommand();
 
             Console.WriteLine();

Src/Asp.Net/SqlSugar/Abstract/SugarProvider/SqlSugarProvider.cs

@@ -1133,5 +1133,40 @@ namespace SqlSugar
             }
         }
         #endregion
+
+        #region Split table
+        public SplitTableContext SplitHelper<T>()
+        {
+            var result = new SplitTableContext(this.Context)
+            {
+                EntityInfo = this.Context.EntityMaintenance.GetEntityInfo<T>()
+            };
+            return result;
+        }
+        public SplitTableContextResult<T> SplitHelper<T>(T data)
+        {
+            var result = new SplitTableContext(this.Context)
+            {
+                EntityInfo = this.Context.EntityMaintenance.GetEntityInfo<T>()
+            };
+            return new SplitTableContextResult<T>()
+            {
+                Items = new List<T> { data },
+                Helper = result
+            };
+        }
+        public SplitTableContextResult<T> SplitHelper<T>(List<T> data)
+        {
+            var result = new SplitTableContext(this.Context)
+            {
+                EntityInfo = this.Context.EntityMaintenance.GetEntityInfo<T>()
+            };
+            return new SplitTableContextResult<T>()
+            {
+                Items = data,
+                Helper = result
+            };
+        }
+        #endregion
     }
 }

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

@@ -44,6 +44,8 @@ namespace SqlSugar
 
         #region Other methods
         SplitTableContext SplitHelper<T>();
+        SplitTableContextResult<T> SplitHelper<T>(T data);
+        SplitTableContextResult<T> SplitHelper<T>(List<T> data);
         DateTime GetDate();
         //SimpleClient GetSimpleClient();
         SimpleClient<T> GetSimpleClient<T>() where T : class, new();

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

@@ -8,6 +8,32 @@ using System.Threading.Tasks;
 
 namespace SqlSugar
 {
+    public class SplitTableContextResult<T> 
+    {
+        public List<T> Items { get;  set; }
+        public SplitTableContext Helper { get;  set; }
+
+        public string [] GetTableNames() 
+        {
+            List<string> result = new List<string>();
+            var attribute = typeof(T).GetCustomAttribute<SplitTableAttribute>() as SplitTableAttribute;
+            Check.Exception(attribute == null, $" {typeof(T).Name} need SplitTableAttribute");
+            foreach (var item in Items)
+            {
+                result.Add(Helper.GetTableName(Helper.GetValue(attribute.SplitType,item)));
+            }
+            return  result.Distinct().ToArray();
+        }
+        public string[] GetTableNames(SplitType splitType)
+        {
+            List<string> result = new List<string>();;
+            foreach (var item in Items)
+            {
+                result.Add(Helper.GetTableName(Helper.GetValue(splitType, item)));
+            }
+            return result.ToArray();
+        }
+    }
     public class SplitTableContext
     {
         internal SqlSugarProvider Context { get; set; }

Src/Asp.Net/SqlSugar/SqlSugarClient.cs

@@ -848,11 +848,15 @@ namespace SqlSugar
         #region Helper
         public SplitTableContext SplitHelper<T>()
         {
-            var result = new SplitTableContext(this.Context)
-            {
-                EntityInfo = this.Context.EntityMaintenance.GetEntityInfo<T>()
-            };
-            return result;
+            return this.Context.SplitHelper<T>();
+        }
+        public SplitTableContextResult<T> SplitHelper<T>(T data) 
+        {
+            return this.Context.SplitHelper(data);
+        }
+        public SplitTableContextResult<T> SplitHelper<T>(List<T> dataList)
+        {
+            return this.Context.SplitHelper(dataList);
         }
         private SqlSugarProvider GetContext()
         {

Src/Asp.Net/SqlSugar/SqlSugarScope.cs

@@ -600,6 +600,14 @@ namespace SqlSugar
         {
             return ScopedContext.SplitHelper<T>();
         }
+        public SplitTableContextResult<T> SplitHelper<T>(T data)
+        {
+            return ScopedContext.SplitHelper(data);
+        }
+        public SplitTableContextResult<T> SplitHelper<T>(List<T> dataList)
+        {
+            return ScopedContext.SplitHelper(dataList);
+        }
         public SqlSguarTransaction UseTran()
         {
             return ScopedContext.UseTran();