-

OrmTest/UnitTest/Query/SelectQuery.cs

@@ -38,20 +38,24 @@ namespace OrmTest.UnitTest
 
                 #region dr ot entity
                 db.IgnoreComumns.Add("TestId", "Student");
-                var s1 = db.Queryable<Student>().Select(it => new ViewModelStudent2 {    Name=it.Name,Student=it}).ToList();
-                var s2 = db.Queryable<Student>().Select(it => new  { id=it.Id,w=new { x=it } }).ToList();
+                var s1 = db.Queryable<Student>().Select(it => new ViewModelStudent2 { Name = it.Name, Student = it }).ToList();
+                var s2 = db.Queryable<Student>().Select(it => new { id = it.Id, w = new { x = it } }).ToList();
                 var s3 = db.Queryable<Student>().Select(it => new { newid = it.Id }).ToList();
                 var s4 = db.Queryable<Student>().Select(it => new { newid = it.Id, obj = it }).ToList();
-                var s5 = db.Queryable<Student>().Select(it => new ViewModelStudent2 { Student = it,  Name =it.Name }).ToList();
+                var s5 = db.Queryable<Student>().Select(it => new ViewModelStudent2 { Student = it, Name = it.Name }).ToList();
                 #endregion
 
 
                 #region sql and parameters validate
-                var ss0 = db.Queryable<Student, School>((st,sc)=>new object[] {
+                var ss0 = db.Queryable<Student, School>((st, sc) => new object[] {
                     JoinType.Inner,st.Id==sc.Id
-                }).GroupBy(st => st.Id).Select(st => new { avgId=NBORM.AggregateAvg(st.Id) }).ToSql();
-                base.Check(" SELECT  AVG([st].[Id]) AS [avgId]  FROM [Student] st Inner JOIN School sc ON ( [st].[Id] = [sc].[Id] )  GROUP BY [st].[Id] ", null,
-                    ss0.Key, null," ss0 Error");
+                }).GroupBy(st => st.Id).Having(sc => NBORM.AggregateAvg(sc.Id) == 1).Select(st => new { avgId = NBORM.AggregateAvg(st.Id) }).ToSql();
+                base.Check("SELECT  AVG([st].[Id]) AS [avgId]  FROM [Student] st Inner JOIN School sc ON ( [st].[Id] = [sc].[Id] )  GROUP BY [st].[Id] HAVING (AVG([sc].[Id]) = @Const0 ) ",
+                    new List<SugarParameter>() {
+                      new SugarParameter("@Const0",1)
+                    }
+                    ,
+                    ss0.Key, ss0.Value, " ss0 Error");
 
 
                 var ss1 = db.Queryable<School, School>((st, st2) => new object[] {

SqlSugar/Abstract/QueryableProvider/QueryableProvider.cs

@@ -99,6 +99,45 @@ namespace SqlSugar
             this._Where(expression);
             return this;
         }
+
+        public ISugarQueryable<T> Having(Expression<Func<T, bool>> expression) {
+            this._Having(expression);
+            return this;
+        }
+        public ISugarQueryable<T> Having(string whereString, object whereObj = null)
+        {
+
+            QueryBuilder.HavingInfos = SqlBuilder.AppendHaving(whereString);
+            if (whereObj != null)
+                QueryBuilder.QueryPars.AddRange(Context.Database.GetParameters(whereObj));
+            return this;
+        }
+        public ISugarQueryable<T> Having<T2>(Expression<Func<T2, bool>> expression)
+        {
+            this._Having(expression);
+            return this;
+        }
+        public ISugarQueryable<T> Having<T2, T3>(Expression<Func<T2, T3, bool>> expression)
+        {
+            this._Having(expression);
+            return this;
+        }
+        public ISugarQueryable<T> Having<T2, T3, T4>(Expression<Func<T2, T3, T4, bool>> expression)
+        {
+            this._Having(expression);
+            return this;
+        }
+        public ISugarQueryable<T> Having<T2, T3, T4, T5>(Expression<Func<T2, T3, T4, T5, bool>> expression)
+        {
+            this._Having(expression);
+            return this;
+        }
+        public ISugarQueryable<T> Having<T2, T3, T4, T5, T6>(Expression<Func<T2, T3, T4, T5, T6, bool>> expression)
+        {
+            this._Having(expression);
+            return this;
+        }
+
         public virtual ISugarQueryable<T> WhereIF(bool isWhere, Expression<Func<T, bool>> expression)
         {
             if (!isWhere) return this;
@@ -539,7 +578,13 @@ namespace SqlSugar
             GroupBy(lamResult.GetResultString());
             return this;
         }
-
+        protected ISugarQueryable<T> _Having(Expression expression)
+        {
+            var isSingle = QueryBuilder.IsSingle();
+            var lamResult = QueryBuilder.GetExpressionValue(expression, isSingle ? ResolveExpressType.WhereSingle : ResolveExpressType.WhereMultiple);
+            Having(lamResult.GetResultString());
+            return this;
+        }
         private List<TResult> _ToList<TResult>()
         {
             var sqlObj = this.ToSql();

SqlSugar/Abstract/SqlBuilderProvider/DMLBuilder/QueryBuilder.cs

@@ -19,6 +19,7 @@ namespace SqlSugar
         #region Private Fileds
         private List<JoinQueryInfo> _JoinQueryInfos;
         private List<string> _WhereInfos;
+        private string _HavingInfos;
         private string _TableNameString;
         #endregion
 
@@ -61,6 +62,17 @@ namespace SqlSugar
             }
             set { _WhereInfos = value; }
         }
+        public virtual string HavingInfos
+        {
+            get
+            {
+                return _HavingInfos;
+            }
+            set
+            {
+                _HavingInfos = value;
+            }
+        }
         #endregion
 
         #region Lambada Type
@@ -155,8 +167,10 @@ namespace SqlSugar
                 return "AVG({0})";
             }
         }
-        public virtual string InTemplate {
-            get {
+        public virtual string InTemplate
+        {
+            get
+            {
                 return "{0} IN ({1}) ";
             }
         }
@@ -185,7 +199,7 @@ namespace SqlSugar
         public virtual string ToSqlString()
         {
             sql = new StringBuilder();
-            sql.AppendFormat(SqlTemplate, GetSelectValue, GetTableNameString, GetWhereValueString, GetGroupByString,(Skip!=null||Take!=null)?null:GetOrderByString);
+            sql.AppendFormat(SqlTemplate, GetSelectValue, GetTableNameString, GetWhereValueString, GetGroupByString+HavingInfos, (Skip != null || Take != null) ? null : GetOrderByString);
             if (IsCount) { return sql.ToString(); }
             if (Skip != null && Take == null)
             {

SqlSugar/Abstract/SqlBuilderProvider/SqlBuilderProvider.cs

@@ -22,6 +22,10 @@ namespace SqlSugar
         {
             return isWhere ? (" WHERE " + sqlString ):( " AND " + sqlString);
         }
+        public string AppendHaving(string sqlString)
+        {
+            return  " HAVING " + sqlString;
+        }
 
         public DeleteBuilder DeleteBuilder
         {

SqlSugar/ExpressionsToSql/ResolveItems/MemberInitExpressionResolve.cs

@@ -54,6 +54,12 @@ namespace SqlSugar
                     parameter.Context.Result.Append(base.Context.GetAsString(memberName, parameterName));
                     this.Context.Parameters.Add(new SugarParameter(parameterName, parameter.CommonTempData));
                 }
+                else if (item is MethodCallExpression)
+                {
+                    base.Expression = item;
+                    base.Start();
+                    parameter.Context.Result.Append(base.Context.GetAsString(memberName, parameter.CommonTempData.ObjToString()));
+                }
                 else if (item is MemberExpression)
                 {
                     if (base.Context.Result.IsLockCurrentParameter == false)

SqlSugar/Interface/IQueryable.cs

@@ -24,6 +24,15 @@ namespace SqlSugar
         ISugarQueryable<T> Where<T2, T3, T4>(Expression<Func<T2, T3, T4, bool>> expression);
         ISugarQueryable<T> Where<T2, T3, T4, T5>(Expression<Func<T2, T3, T4, T5, bool>> expression) ;
         ISugarQueryable<T> Where<T2, T3, T4, T5, T6>(Expression<Func<T2, T3, T4, T5, T6, bool>> expression) ;
+
+        ISugarQueryable<T> Having(Expression<Func<T, bool>> expression);
+        ISugarQueryable<T> Having(string whereString, object whereObj = null);
+        ISugarQueryable<T> Having<T2>(Expression<Func<T2, bool>> expression);
+        ISugarQueryable<T> Having<T2, T3>(Expression<Func<T2, T3, bool>> expression);
+        ISugarQueryable<T> Having<T2, T3, T4>(Expression<Func<T2, T3, T4, bool>> expression);
+        ISugarQueryable<T> Having<T2, T3, T4, T5>(Expression<Func<T2, T3, T4, T5, bool>> expression);
+        ISugarQueryable<T> Having<T2, T3, T4, T5, T6>(Expression<Func<T2, T3, T4, T5, T6, bool>> expression);
+
         ISugarQueryable<T> WhereIF(bool isWhere, Expression<Func<T, bool>> expression);
         ISugarQueryable<T> WhereIF(bool isWhere,string whereString, object whereObj = null);
         ISugarQueryable<T> WhereIF<T2>(bool isWhere, Expression<Func<T2, bool>> expression);

SqlSugar/Interface/ISqlBuilder/ISqlBuilder.cs

@@ -11,6 +11,7 @@ namespace SqlSugar
         SqlSugarClient Context { get; set; }
         CommandType CommandType { get; set; }
         String AppendWhereOrAnd(bool isWhere, string sqlString);
+        string AppendHaving(string sqlString);
         SqlQueryBuilder SqlQueryBuilder { get; set; }
         QueryBuilder QueryBuilder { get; set; }
         InsertBuilder InsertBuilder { get; set; }