Update BulkMerge

Src/Asp.NetCore2/SqlSugar/Abstract/FastestProvider/FastestProvider.cs

@@ -170,7 +170,7 @@ namespace SqlSugar
         public Task<int> BulkMergeAsync(List<T> datas)
         {
             var updateColumns = entityInfo.Columns.Where(it => !it.IsPrimarykey && !it.IsIdentity && !it.IsOnlyIgnoreUpdate && !it.IsIgnore).Select(it => it.DbColumnName ?? it.PropertyName).ToArray();
-            var whereColumns = entityInfo.Columns.Where(it => it.IsPrimarykey).Select(it => it.DbColumnName ?? it.PropertyName).ToArray(); Begin(datas, false);
+            var whereColumns = entityInfo.Columns.Where(it => it.IsPrimarykey).Select(it => it.DbColumnName ?? it.PropertyName).ToArray(); ;
             return BulkMergeAsync(datas, whereColumns, updateColumns);
         }
         public int BulkMerge(List<T> datas)
@@ -192,7 +192,7 @@ namespace SqlSugar
             {
                 int resul = 0;
                 await this.context.Utilities.PageEachAsync(datas, Size, async item =>
-                {
+                { 
                     resul += await _BulkMerge(item, updateColumns, whereColumns);
                 });
                 return resul;
@@ -208,7 +208,8 @@ namespace SqlSugar
         }
 
         private async Task<int> _BulkMerge(List<T> datas, string[] updateColumns, string[] whereColumns)
-        { 
+        {
+            Begin(datas, false,true);
             Check.Exception(whereColumns == null || whereColumns.Count() == 0, "where columns count=0 or need primary key");
             Check.Exception(whereColumns == null || whereColumns.Count() == 0, "where columns count=0 or need primary key");
             var isAuto = this.context.CurrentConnectionConfig.IsAutoCloseConnection;
@@ -216,18 +217,21 @@ namespace SqlSugar
             DataTable dt = ToDdateTable(datas);
             IFastBuilder buider = GetBuider();
             buider.Context = context;
-            await buider.CreateTempAsync<T>(dt);
-            await buider.ExecuteBulkCopyAsync(dt);
+            if (buider?.DbFastestProperties?.IsMerge == true)
+            {
+                await buider.CreateTempAsync<T>(dt);
+                await buider.ExecuteBulkCopyAsync(dt);
+            }
             var result = await buider.Merge(dt, this.entityInfo,whereColumns,updateColumns, datas);
             //var queryTemp = this.context.Queryable<T>().AS(dt.TableName).ToList();//test
             //var result = await buider.UpdateByTempAsync(GetTableName(), dt.TableName, updateColumns, whereColumns);
-            if (this.context.CurrentConnectionConfig.DbType != DbType.Sqlite)
+            if (buider?.DbFastestProperties?.IsMerge == true&&this.context.CurrentConnectionConfig.DbType != DbType.Sqlite)
             {
                 this.context.DbMaintenance.DropTable(dt.TableName);
             }
             this.context.CurrentConnectionConfig.IsAutoCloseConnection = isAuto;
             buider.CloseDb();
-            End(datas, false);
+            End(datas, false,true);
             return result;
         }
         #endregion
@@ -346,9 +350,13 @@ namespace SqlSugar
         #endregion
 
         #region AOP
-        private void End<Type>(List<Type> datas,bool isAdd)
+        private void End<Type>(List<Type> datas,bool isAdd,bool isMerge=false)
         {
             var title = isAdd ? "BulkCopy" : "BulkUpdate";
+            if (isMerge) 
+            {
+                title = "BulkMerge";
+            }
             this.context.Ado.IsEnableLogEvent = isLog;
             if (this.context.CurrentConnectionConfig?.AopEvents?.OnLogExecuted != null)
             {
@@ -356,9 +364,13 @@ namespace SqlSugar
             }
             RemoveCache();
         }
-        private void Begin<Type>(List<Type> datas,bool isAdd)
+        private void Begin<Type>(List<Type> datas,bool isAdd, bool isMerge = false)
         {
             var title = isAdd ? "BulkCopy" : "BulkUpdate";
+            if (isMerge)
+            {
+                title = "BulkMerge";
+            }
             isLog = this.context.Ado.IsEnableLogEvent;
             this.context.Ado.IsEnableLogEvent = false;
             if (this.context.CurrentConnectionConfig?.AopEvents?.OnLogExecuting != null)

Src/Asp.NetCore2/SqlSugar/Entities/DbFastestProperties.cs

@@ -11,5 +11,6 @@ namespace SqlSugar
         public bool HasOffsetTime { get; set; }
         public string[] WhereColumns { get; set; }
         public bool IsOffIdentity { get;  set; }
+        public bool IsMerge { get; set; }
     }
 }

Src/Asp.NetCore2/SqlSugar/Realization/Oracle/SqlBuilder/OracleFastBuilder.cs

@@ -9,6 +9,10 @@ namespace SqlSugar
 {
     public class OracleFastBuilder : FastBuilder, IFastBuilder
     {
+        public override DbFastestProperties DbFastestProperties { get; set; } = new DbFastestProperties()
+        { 
+            IsMerge = true
+        };
         private EntityInfo entityInfo;
 
         public OracleFastBuilder(EntityInfo entityInfo)

Src/Asp.NetCore2/SqlSugar/Realization/SqlServer/SqlBuilder/SqlServerFastBuilder.cs

@@ -14,7 +14,8 @@ namespace SqlSugar
     {
         public override bool IsActionUpdateColumns { get; set; } = true;
         public override DbFastestProperties DbFastestProperties { get; set; } = new DbFastestProperties() {
-          HasOffsetTime=true
+          HasOffsetTime=true,
+          IsMerge=true
         };
         public async Task<int> ExecuteBulkCopyAsync(DataTable dt)
         {