-

Src/Asp.Net/SqlServerTest/Demos/1_Query.cs

@@ -284,12 +284,12 @@ namespace OrmTest.Demo
             var getUnionAllList2 = db.UnionAll(db.Queryable<Student>(), db.Queryable<Student>()).ToList();
 
             var test1 = db.Queryable<Student, School>((st, sc) => st.SchoolId == sc.Id).Where(st=>st.CreateTime>SqlFunc.GetDate()).Select((st, sc) => SqlFunc.ToInt64(sc.Id)).ToList();
-            //var test2= db.Queryable<Student, School>((st, sc) => st.SchoolId == sc.Id)
-            //          .Where(st=>
-            //            SqlFunc.IF(st.Id>1)
+            //var test2 = db.Queryable<Student, School>((st, sc) => st.SchoolId == sc.Id)
+            //          .Where(st =>
+            //            SqlFunc.IF(st.Id > 1)
             //                 .Return(st.Id)
-            //                 .ElseIF(st.Id==1)
-            //                 .Return(st.SchoolId).End(st.Id)==1).ToList();
+            //                 .ElseIF(st.Id == 1)
+            //                 .Return(st.SchoolId).End(st.Id) == 1).ToList();
         }
         public static void Page()
         {

Src/Asp.Net/SqlSugar/ExpressionsToSql/CaseWhen/CaseWhenResolve.cs

@@ -0,0 +1,48 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Linq.Expressions;
+using System.Text;
+
+namespace SqlSugar
+{
+    ///<summary>
+    /// ** description：Get subquery sql
+    /// ** author：sunkaixuan
+    /// ** date：2017/9/17
+    /// ** email:610262374@qq.com
+    /// </summary>
+    public class CaseWhenResolve
+    {
+        List<MethodCallExpression> allMethods = new List<MethodCallExpression>();
+        private ExpressionContext context = null;
+        private bool hasWhere;
+        public CaseWhenResolve(MethodCallExpression expression, ExpressionContext context, Expression oppsiteExpression)
+        {
+            this.context = context;
+            var currentExpression = expression;
+            allMethods.Add(currentExpression);
+            if (context.IsSingle && oppsiteExpression != null&& oppsiteExpression is MemberExpression)
+            {
+                var childExpression = (oppsiteExpression as MemberExpression).Expression;
+                this.context.SingleTableNameSubqueryShortName = (childExpression as ParameterExpression).Name;
+            }
+            else if (context.IsSingle)
+            {
+                this.context.SingleTableNameSubqueryShortName = (context.Expression as LambdaExpression).Parameters.First().Name;
+            }
+            while (currentExpression != null)
+            {
+                var addItem = currentExpression.Object as MethodCallExpression;
+                if (addItem != null)
+                    allMethods.Add(addItem);
+                currentExpression = addItem;
+            }
+        }
+
+        public string GetSql()
+        {
+            return "";
+        }
+    }
+}

Src/Asp.Net/SqlSugar/ExpressionsToSql/Subquery/SubTools.cs

@@ -23,6 +23,8 @@ namespace SqlSugar
                                                     new SubCount(){ Context=Context },
                                                     new SubMax(){ Context=Context },
                                                     new SubMin(){ Context=Context },
+                                                    new SubSum(){ Context=Context },
+                                                    new SubAvg(){ Context=Context },
                                                     new SubOrderBy(){ Context=Context },
                                                     new SubOrderByDesc(){ Context=Context }
                                                 };

Src/Asp.Net/SqlSugar/SqlSugar.csproj

@@ -81,6 +81,7 @@
     <Compile Include="Enum\ConditionalType.cs" />
     <Compile Include="Enum\DbType.cs" />
     <Compile Include="ExpressionsToSql\CaseWhen\CaseWhen.cs" />
+    <Compile Include="ExpressionsToSql\CaseWhen\CaseWhenResolve.cs" />
     <Compile Include="ExpressionsToSql\Subquery\Items\ISubOperation.cs" />
     <Compile Include="ExpressionsToSql\Subquery\Items\SubAnd.cs" />
     <Compile Include="ExpressionsToSql\Subquery\Items\SubCount.cs" />