Update queryable.ToSql()

Src/Asp.Net/SqlServerTest/Demo/DemoH_Tenant.cs

@@ -22,7 +22,6 @@ namespace OrmTest
             public void Test()
             {
                 base.db.BeginTran();
-
                 base.GetList(); //调用内部仓储方法
                 base.ChangeRepository<Repository<C2Table>>().GetList();//调用外部仓储
 
@@ -57,7 +56,8 @@ namespace OrmTest
                  
                     var configId = typeof(T).GetCustomAttribute<TenantAttribute>().configId;
                     Context = db.GetConnection(configId);
-                    this.db = db; 
+                    this.db = db;
+                    this.db.CodeFirst.InitTables<T>();
                 }
             }
 

Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/QueryableProvider.cs

@@ -1177,11 +1177,16 @@ namespace SqlSugar
 
         public virtual KeyValuePair<string, List<SugarParameter>> ToSql()
         {
-            InitMapping();
+            if (!QueryBuilder.IsClone) 
-            ToSqlBefore();
+            {
-            string sql = QueryBuilder.ToSqlString();
+                var newQueryable = this.Clone();
-            RestoreMapping();
+                newQueryable.QueryBuilder.IsClone = true;
-            return new KeyValuePair<string, List<SugarParameter>>(sql, QueryBuilder.Parameters);
+                return newQueryable.ToSql();
+            }
+            else
+            {
+                return _ToSql();
+            }
         }
         public ISugarQueryable<T> WithCache(int cacheDurationInSeconds = int.MaxValue)
         {
@@ -1464,6 +1469,14 @@ namespace SqlSugar
         #endregion
 
         #region Private Methods
+        public virtual KeyValuePair<string, List<SugarParameter>> _ToSql()
+        {
+            InitMapping();
+            ToSqlBefore();
+            string sql = QueryBuilder.ToSqlString();
+            RestoreMapping();
+            return new KeyValuePair<string, List<SugarParameter>>(sql, QueryBuilder.Parameters);
+        }
         private List<T> GetChildList(Expression<Func<T, object>> parentIdExpression, string pkName, List<T> list, object rootValue,bool isRoot=true)
         {
             var exp = (parentIdExpression as LambdaExpression).Body;

Src/Asp.Net/SqlSugar/Abstract/SqlBuilderProvider/QueryBuilder.cs

@@ -646,6 +646,10 @@ namespace SqlSugar
 
         #endregion
 
+        #region NoCopy
+        internal bool IsClone { get; set; }
+        #endregion
+
         private string GetTableName(string entityName)
         {
             if (this.AsTables != null && this.AsTables.Any(it=>it.Key==entityName))