Update merge

Src/Asp.NetCore2/SqlSugar.HG/SqlSugar.Nhgdb.nuspec

@@ -2,7 +2,7 @@
 <package >
   <metadata>
     <id>SqlSugar.Nhgdb</id>
-    <version>5.1.4.159</version>
+    <version>5.1.4.205</version>
     <authors>sunkaixuan</authors>
     <owners>Landa</owners>
     <licenseUrl>http://www.apache.org/licenses/LICENSE-2.0.html</licenseUrl>

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

@@ -7,6 +7,7 @@ using System.Linq;
 using System.Threading;
 using System.Reflection;
 using System.Runtime.CompilerServices;
+using System.Linq.Expressions;
 namespace SqlSugar 
 {
     public partial class FastestProvider<T>:IFastest<T> where T:class,new()
@@ -244,6 +245,25 @@ namespace SqlSugar
             return BulkMergeAsync(datas, whereColumns, updateColumns).GetAwaiter().GetResult();
         }
 
+        public async Task<int> BulkMergeAsync(List<T> datas, Expression<Func<T, object>> whereColumnsExp, Expression<Func<T, object>> updateColumnsExp)
+        {
+            // 步骤：
+            // 1. 通过表达式获取 whereColumns 和 updateColumns 的列名数组
+            // 2. 调用已有的 BulkMergeAsync(List<T>, string[], string[]) 方法
+
+            // 1. 获取 whereColumns
+            var whereColumns =ExpressionTool.GetNewArrayMembers((whereColumnsExp as LambdaExpression).Body as NewArrayExpression);
+            // 2. 获取 updateColumns
+            var updateColumns = ExpressionTool.GetNewArrayMembers((updateColumnsExp as LambdaExpression).Body as NewArrayExpression);
+
+            // 3. 调用 BulkMergeAsync
+            return await BulkMergeAsync(datas, whereColumns?.ToArray(), updateColumns?.ToArray());
+        }
+        public int BulkMerge(List<T> datas, Expression<Func<T, object>> whereColumnsExp, Expression<Func<T, object>> updateColumnsExp)
+        {
+            return BulkMergeAsync(datas, whereColumnsExp, updateColumnsExp).GetAwaiter().GetResult();
+        }
+
         private async Task<int> _BulkMerge(List<T> datas, string[] updateColumns, string[] whereColumns)
         {
             try

Src/Asp.NetCore2/SqlSugar/Interface/IFastest.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
-using System.Data; 
+using System.Data;
+using System.Linq.Expressions;
 using System.Text;
 using System.Threading.Tasks;
 
@@ -45,6 +46,7 @@ namespace SqlSugar
         int BulkMerge(List<T> datas, string[] whereColumns);
         Task<int> BulkMergeAsync(List<T> datas, string[] whereColumns, string[] updateColumns);
         int BulkMerge(List<T> datas, string[] whereColumns, string[] updateColumns);
-
+        Task<int> BulkMergeAsync(List<T> datas, Expression<Func<T, object>> whereColumnsExp, Expression<Func<T, object>> updateColumnsExp);
+        int BulkMerge(List<T> datas, Expression<Func<T, object>> whereColumnsExp, Expression<Func<T, object>> updateColumnsExp);
     }
 }