diff --git a/OrmTest/UnitTest/Query/SelectQuery.cs b/OrmTest/UnitTest/Query/SelectQuery.cs
index f8a7c37ed..393c32b22 100644
--- a/OrmTest/UnitTest/Query/SelectQuery.cs
+++ b/OrmTest/UnitTest/Query/SelectQuery.cs
@@ -40,10 +40,11 @@ namespace OrmTest.UnitTest
                           JoinType.Left,st.SchoolId==sc.Id
                 }).Where(st => st.Id > 0).Select<Student>("*").ToList();
 
-                //var list3 = db.Queryable("Student","st")
-                // .AddJoinInfo("Shool","sh", "sh.id=st.shoolid")
-                // .Where(st => st.Id > 0)
-                // .Select(st => new ViewModelStudent2 { Student = st }).ToList();
+                var list3 = db.Queryable("Student", "st")
+                 .AddJoinInfo("School", "sh", "sh.id=st.schoolid")
+                 .Where("st.id>@id")
+                 .AddParameters(new {id=1})
+                 .Select("st.*").ToList();
             }
         }
 
diff --git a/SqlSugar/Abstract/QueryableProvider/QueryableAccessory.cs b/SqlSugar/Abstract/QueryableProvider/QueryableAccessory.cs
index b2f06588e..4e2d5b1f4 100644
--- a/SqlSugar/Abstract/QueryableProvider/QueryableAccessory.cs
+++ b/SqlSugar/Abstract/QueryableProvider/QueryableAccessory.cs
@@ -37,7 +37,7 @@ namespace SqlSugar
             ILambdaExpressions resolveExpress = context.LambdaExpressions;
             resolveExpress.Resolve(expression, type);
             Pars.AddRange(resolveExpress.Parameters);
-            builder.LambadaQueryBuilder.WhereInfos.Add(resolveExpress.Result.GetResultString());
+            builder.LambadaQueryBuilder.WhereInfos.Add(builder.AppendWhereOrAnd(builder.LambadaQueryBuilder.WhereInfos.IsNullOrEmpty(),resolveExpress.Result.GetResultString()));
             resolveExpress.Clear();
         }
 
diff --git a/SqlSugar/Abstract/SqlBuilderProvider/DMLBuilder/LambadaQueryBuilder.cs b/SqlSugar/Abstract/SqlBuilderProvider/DMLBuilder/LambadaQueryBuilder.cs
index 3dd4f53d1..e71e113d6 100644
--- a/SqlSugar/Abstract/SqlBuilderProvider/DMLBuilder/LambadaQueryBuilder.cs
+++ b/SqlSugar/Abstract/SqlBuilderProvider/DMLBuilder/LambadaQueryBuilder.cs
@@ -122,7 +122,7 @@ namespace SqlSugar
                 if (this.WhereInfos == null) return null;
                 else
                 {
-                    return " WHERE " + string.Join(" ", this.WhereInfos);
+                    return  string.Join(" ", this.WhereInfos);
                 }
             }
         }
diff --git a/SqlSugar/DetaultT.cs b/SqlSugar/DetaultT.cs
index 5840e45a3..9ed9cd4a8 100644
--- a/SqlSugar/DetaultT.cs
+++ b/SqlSugar/DetaultT.cs
@@ -1,6 +1,7 @@
 namespace SqlSugar
 {
-    public class DetaultT
+    public class SugarDynamic
     {
+
     }
 }
\ No newline at end of file
diff --git a/SqlSugar/SqlSugarClient.cs b/SqlSugar/SqlSugarClient.cs
index 526be0e9a..ce166872a 100644
--- a/SqlSugar/SqlSugarClient.cs
+++ b/SqlSugar/SqlSugarClient.cs
@@ -126,9 +126,9 @@ namespace SqlSugar
         /// <summary>
         /// Lambda Query operation
         /// </summary>
-        public virtual ISugarQueryable<DetaultT> Queryable(string tableName,string shortName,string widthString=null)
+        public virtual ISugarQueryable<SugarDynamic> Queryable(string tableName,string shortName,string widthString=null)
         {
-            var queryable = Queryable<DetaultT>();
+            var queryable = Queryable<SugarDynamic>();
             queryable.SqlBuilder.LambadaQueryBuilder.EntityName = tableName;
             queryable.SqlBuilder.LambadaQueryBuilder.TableShortName = shortName;
             queryable.SqlBuilder.LambadaQueryBuilder.TableWithString = widthString;