- 增加 ISelect`1.WithSql("select * from user ...") 功能；

FreeSql/FreeSql.xml

@@ -1707,6 +1707,14 @@
             <param name="then">即能 ThenInclude，还可以二次过滤（这个 EFCore 做不到？）</param>
             <returns></returns>
         </member>
+        <member name="M:FreeSql.ISelect`1.WithSql(System.String)">
+            <summary>
+            实现 select .. from ( select ... from t ) a 这样的功能<para></para>
+            使用 AsTable 方法也可以达到效果
+            </summary>
+            <param name="sql">SQL语句</param>
+            <returns></returns>
+        </member>
         <member name="M:FreeSql.ISelectFromExpression`1.Where(System.Linq.Expressions.Expression{System.Func{`0,System.Boolean}})">
             <summary>
             查询条件，Where(a => a.Id > 10)，支持导航对象查询，Where(a => a.Author.Email == "2881099@qq.com")

FreeSql/Interface/Curd/ISelect/ISelect1.cs

@@ -369,5 +369,13 @@ namespace FreeSql
         /// <param name="then">即能 ThenInclude，还可以二次过滤（这个 EFCore 做不到？）</param>
         /// <returns></returns>
         ISelect<T1> IncludeMany<TNavigate>(Expression<Func<T1, IEnumerable<TNavigate>>> navigateSelector, Action<ISelect<TNavigate>> then = null) where TNavigate : class;
+
+        /// <summary>
+        /// 实现 select .. from ( select ... from t ) a 这样的功能<para></para>
+        /// 使用 AsTable 方法也可以达到效果
+        /// </summary>
+        /// <param name="sql">SQL语句</param>
+        /// <returns></returns>
+        ISelect<T1> WithSql(string sql);
     }
 }

FreeSql/Internal/CommonProvider/SelectProvider/Select1Provider.cs

@@ -329,6 +329,16 @@ namespace FreeSql.Internal.CommonProvider
             return this;
         }
 
+        public ISelect<T1> WithSql(string sql)
+        {
+            this.AsTable((type, old) =>
+            {
+                if (type == _tables.First().Table?.Type) return $"( {sql} )";
+                return old;
+            });
+            return this;
+        }
+
         public bool Any(Expression<Func<T1, bool>> exp) => this.Where(exp).Any();
 
         public TReturn ToOne<TReturn>(Expression<Func<T1, TReturn>> select) => this.Limit(1).ToList(select).FirstOrDefault();