diff --git a/FreeSql.DbContext/FreeSql.DbContext.xml b/FreeSql.DbContext/FreeSql.DbContext.xml
index dc0203b8..d9f91124 100644
--- a/FreeSql.DbContext/FreeSql.DbContext.xml
+++ b/FreeSql.DbContext/FreeSql.DbContext.xml
@@ -110,6 +110,13 @@
             清空状态数据
             </summary>
         </member>
+        <member name="M:FreeSql.DbSet`1.RemoveAsync(System.Linq.Expressions.Expression{System.Func{`0,System.Boolean}})">
+            <summary>
+            根据 lambda 条件删除数据
+            </summary>
+            <param name="predicate"></param>
+            <returns></returns>
+        </member>
         <member name="M:FreeSql.DbSet`1.Add(`0)">
             <summary>
             添加
diff --git a/Providers/FreeSql.Provider.MySql/Curd/MySqlSelect.cs b/Providers/FreeSql.Provider.MySql/Curd/MySqlSelect.cs
index d745db6d..a40c0d56 100644
--- a/Providers/FreeSql.Provider.MySql/Curd/MySqlSelect.cs
+++ b/Providers/FreeSql.Provider.MySql/Curd/MySqlSelect.cs
@@ -48,8 +48,13 @@ namespace FreeSql.MySql.Curd
                             if (string.IsNullOrEmpty(tbsfrom[b].NavigateCondition) && string.IsNullOrEmpty(tbsfrom[b].On) && string.IsNullOrEmpty(tbsfrom[b].Cascade)) sb.Append(" ON 1 = 1");
                             else
                             {
-                                sb.Append(" ON ").Append(tbsfrom[b].NavigateCondition ?? tbsfrom[b].On);
-                                if (string.IsNullOrEmpty(tbsfrom[b].Cascade) == false) sb.Append(" AND (").Append(tbsfrom[b].Cascade).Append(")");
+                                var onSql = tbsfrom[b].NavigateCondition ?? tbsfrom[b].On;
+                                sb.Append(" ON ").Append(onSql);
+                                if (string.IsNullOrEmpty(tbsfrom[b].Cascade) == false)
+                                {
+                                    if (string.IsNullOrEmpty(onSql)) sb.Append(tbsfrom[b].Cascade);
+                                    else sb.Append(" AND (").Append(tbsfrom[b].Cascade).Append(")");
+                                }
                             }
                         }
                         break;
diff --git a/Providers/FreeSql.Provider.Odbc/Default/Curd/OdbcSelect.cs b/Providers/FreeSql.Provider.Odbc/Default/Curd/OdbcSelect.cs
index bc1895ed..b3f0fb59 100644
--- a/Providers/FreeSql.Provider.Odbc/Default/Curd/OdbcSelect.cs
+++ b/Providers/FreeSql.Provider.Odbc/Default/Curd/OdbcSelect.cs
@@ -62,8 +62,13 @@ namespace FreeSql.Odbc.Default
                             if (string.IsNullOrEmpty(tbsfrom[b].NavigateCondition) && string.IsNullOrEmpty(tbsfrom[b].On) && string.IsNullOrEmpty(tbsfrom[b].Cascade)) sb.Append(" ON 1 = 1");
                             else
                             {
-                                sb.Append(" ON ").Append(tbsfrom[b].NavigateCondition ?? tbsfrom[b].On);
-                                if (string.IsNullOrEmpty(tbsfrom[b].Cascade) == false) sb.Append(" AND (").Append(tbsfrom[b].Cascade).Append(")");
+                                var onSql = tbsfrom[b].NavigateCondition ?? tbsfrom[b].On;
+                                sb.Append(" ON ").Append(onSql);
+                                if (string.IsNullOrEmpty(tbsfrom[b].Cascade) == false)
+                                {
+                                    if (string.IsNullOrEmpty(onSql)) sb.Append(tbsfrom[b].Cascade);
+                                    else sb.Append(" AND (").Append(tbsfrom[b].Cascade).Append(")");
+                                }
                             }
                         }
                         break;
diff --git a/Providers/FreeSql.Provider.Odbc/MySql/Curd/OdbcMySqlSelect.cs b/Providers/FreeSql.Provider.Odbc/MySql/Curd/OdbcMySqlSelect.cs
index 430e812f..f013109b 100644
--- a/Providers/FreeSql.Provider.Odbc/MySql/Curd/OdbcMySqlSelect.cs
+++ b/Providers/FreeSql.Provider.Odbc/MySql/Curd/OdbcMySqlSelect.cs
@@ -48,8 +48,13 @@ namespace FreeSql.Odbc.MySql
                             if (string.IsNullOrEmpty(tbsfrom[b].NavigateCondition) && string.IsNullOrEmpty(tbsfrom[b].On) && string.IsNullOrEmpty(tbsfrom[b].Cascade)) sb.Append(" ON 1 = 1");
                             else
                             {
-                                sb.Append(" ON ").Append(tbsfrom[b].NavigateCondition ?? tbsfrom[b].On);
-                                if (string.IsNullOrEmpty(tbsfrom[b].Cascade) == false) sb.Append(" AND (").Append(tbsfrom[b].Cascade).Append(")");
+                                var onSql = tbsfrom[b].NavigateCondition ?? tbsfrom[b].On;
+                                sb.Append(" ON ").Append(onSql);
+                                if (string.IsNullOrEmpty(tbsfrom[b].Cascade) == false)
+                                {
+                                    if (string.IsNullOrEmpty(onSql)) sb.Append(tbsfrom[b].Cascade);
+                                    else sb.Append(" AND (").Append(tbsfrom[b].Cascade).Append(")");
+                                }
                             }
                         }
                         break;
diff --git a/Providers/FreeSql.Provider.Odbc/Oracle/Curd/OdbcOracleSelect.cs b/Providers/FreeSql.Provider.Odbc/Oracle/Curd/OdbcOracleSelect.cs
index 1e93f77c..83b9f7ca 100644
--- a/Providers/FreeSql.Provider.Odbc/Oracle/Curd/OdbcOracleSelect.cs
+++ b/Providers/FreeSql.Provider.Odbc/Oracle/Curd/OdbcOracleSelect.cs
@@ -50,8 +50,13 @@ namespace FreeSql.Odbc.Oracle
                             if (string.IsNullOrEmpty(tbsfrom[b].NavigateCondition) && string.IsNullOrEmpty(tbsfrom[b].On) && string.IsNullOrEmpty(tbsfrom[b].Cascade)) sb.Append(" ON 1 = 1");
                             else
                             {
-                                sb.Append(" ON ").Append(tbsfrom[b].NavigateCondition ?? tbsfrom[b].On);
-                                if (string.IsNullOrEmpty(tbsfrom[b].Cascade) == false) sb.Append(" AND (").Append(tbsfrom[b].Cascade).Append(")");
+                                var onSql = tbsfrom[b].NavigateCondition ?? tbsfrom[b].On;
+                                sb.Append(" ON ").Append(onSql);
+                                if (string.IsNullOrEmpty(tbsfrom[b].Cascade) == false)
+                                {
+                                    if (string.IsNullOrEmpty(onSql)) sb.Append(tbsfrom[b].Cascade);
+                                    else sb.Append(" AND (").Append(tbsfrom[b].Cascade).Append(")");
+                                }
                             }
                         }
                         break;
diff --git a/Providers/FreeSql.Provider.Odbc/PostgreSQL/Curd/OdbcPostgreSQLSelect.cs b/Providers/FreeSql.Provider.Odbc/PostgreSQL/Curd/OdbcPostgreSQLSelect.cs
index 043feeda..9849d492 100644
--- a/Providers/FreeSql.Provider.Odbc/PostgreSQL/Curd/OdbcPostgreSQLSelect.cs
+++ b/Providers/FreeSql.Provider.Odbc/PostgreSQL/Curd/OdbcPostgreSQLSelect.cs
@@ -48,8 +48,13 @@ namespace FreeSql.Odbc.PostgreSQL
                             if (string.IsNullOrEmpty(tbsfrom[b].NavigateCondition) && string.IsNullOrEmpty(tbsfrom[b].On) && string.IsNullOrEmpty(tbsfrom[b].Cascade)) sb.Append(" ON 1 = 1");
                             else
                             {
-                                sb.Append(" ON ").Append(tbsfrom[b].NavigateCondition ?? tbsfrom[b].On);
-                                if (string.IsNullOrEmpty(tbsfrom[b].Cascade) == false) sb.Append(" AND (").Append(tbsfrom[b].Cascade).Append(")");
+                                var onSql = tbsfrom[b].NavigateCondition ?? tbsfrom[b].On;
+                                sb.Append(" ON ").Append(onSql);
+                                if (string.IsNullOrEmpty(tbsfrom[b].Cascade) == false)
+                                {
+                                    if (string.IsNullOrEmpty(onSql)) sb.Append(tbsfrom[b].Cascade);
+                                    else sb.Append(" AND (").Append(tbsfrom[b].Cascade).Append(")");
+                                }
                             }
                         }
                         break;
diff --git a/Providers/FreeSql.Provider.Odbc/SqlServer/Curd/OdbcSqlServerSelect.cs b/Providers/FreeSql.Provider.Odbc/SqlServer/Curd/OdbcSqlServerSelect.cs
index fa840a15..56b61970 100644
--- a/Providers/FreeSql.Provider.Odbc/SqlServer/Curd/OdbcSqlServerSelect.cs
+++ b/Providers/FreeSql.Provider.Odbc/SqlServer/Curd/OdbcSqlServerSelect.cs
@@ -66,8 +66,13 @@ namespace FreeSql.Odbc.SqlServer
                             if (string.IsNullOrEmpty(tbsfrom[b].NavigateCondition) && string.IsNullOrEmpty(tbsfrom[b].On) && string.IsNullOrEmpty(tbsfrom[b].Cascade)) sb.Append(" ON 1 = 1");
                             else
                             {
-                                sb.Append(" ON ").Append(tbsfrom[b].NavigateCondition ?? tbsfrom[b].On);
-                                if (string.IsNullOrEmpty(tbsfrom[b].Cascade) == false) sb.Append(" AND (").Append(tbsfrom[b].Cascade).Append(")");
+                                var onSql = tbsfrom[b].NavigateCondition ?? tbsfrom[b].On;
+                                sb.Append(" ON ").Append(onSql);
+                                if (string.IsNullOrEmpty(tbsfrom[b].Cascade) == false)
+                                {
+                                    if (string.IsNullOrEmpty(onSql)) sb.Append(tbsfrom[b].Cascade);
+                                    else sb.Append(" AND (").Append(tbsfrom[b].Cascade).Append(")");
+                                }
                             }
                         }
                         break;
@@ -166,8 +171,13 @@ namespace FreeSql.Odbc.SqlServer
                             if (string.IsNullOrEmpty(tbsfrom[b].NavigateCondition) && string.IsNullOrEmpty(tbsfrom[b].On) && string.IsNullOrEmpty(tbsfrom[b].Cascade)) sb.Append(" ON 1 = 1");
                             else
                             {
-                                sb.Append(" ON ").Append(tbsfrom[b].NavigateCondition ?? tbsfrom[b].On);
-                                if (string.IsNullOrEmpty(tbsfrom[b].Cascade) == false) sb.Append(" AND (").Append(tbsfrom[b].Cascade).Append(")");
+                                var onSql = tbsfrom[b].NavigateCondition ?? tbsfrom[b].On;
+                                sb.Append(" ON ").Append(onSql);
+                                if (string.IsNullOrEmpty(tbsfrom[b].Cascade) == false)
+                                {
+                                    if (string.IsNullOrEmpty(onSql)) sb.Append(tbsfrom[b].Cascade);
+                                    else sb.Append(" AND (").Append(tbsfrom[b].Cascade).Append(")");
+                                }
                             }
                         }
                         break;
diff --git a/Providers/FreeSql.Provider.Oracle/Curd/OracleSelect.cs b/Providers/FreeSql.Provider.Oracle/Curd/OracleSelect.cs
index 290dc859..b2349ef0 100644
--- a/Providers/FreeSql.Provider.Oracle/Curd/OracleSelect.cs
+++ b/Providers/FreeSql.Provider.Oracle/Curd/OracleSelect.cs
@@ -50,8 +50,13 @@ namespace FreeSql.Oracle.Curd
                             if (string.IsNullOrEmpty(tbsfrom[b].NavigateCondition) && string.IsNullOrEmpty(tbsfrom[b].On) && string.IsNullOrEmpty(tbsfrom[b].Cascade)) sb.Append(" ON 1 = 1");
                             else
                             {
-                                sb.Append(" ON ").Append(tbsfrom[b].NavigateCondition ?? tbsfrom[b].On);
-                                if (string.IsNullOrEmpty(tbsfrom[b].Cascade) == false) sb.Append(" AND (").Append(tbsfrom[b].Cascade).Append(")");
+                                var onSql = tbsfrom[b].NavigateCondition ?? tbsfrom[b].On;
+                                sb.Append(" ON ").Append(onSql);
+                                if (string.IsNullOrEmpty(tbsfrom[b].Cascade) == false)
+                                {
+                                    if (string.IsNullOrEmpty(onSql)) sb.Append(tbsfrom[b].Cascade);
+                                    else sb.Append(" AND (").Append(tbsfrom[b].Cascade).Append(")");
+                                }
                             }
                         }
                         break;
diff --git a/Providers/FreeSql.Provider.PostgreSQL/Curd/PostgreSQLSelect.cs b/Providers/FreeSql.Provider.PostgreSQL/Curd/PostgreSQLSelect.cs
index 1e8faf08..928d91c6 100644
--- a/Providers/FreeSql.Provider.PostgreSQL/Curd/PostgreSQLSelect.cs
+++ b/Providers/FreeSql.Provider.PostgreSQL/Curd/PostgreSQLSelect.cs
@@ -48,8 +48,13 @@ namespace FreeSql.PostgreSQL.Curd
                             if (string.IsNullOrEmpty(tbsfrom[b].NavigateCondition) && string.IsNullOrEmpty(tbsfrom[b].On) && string.IsNullOrEmpty(tbsfrom[b].Cascade)) sb.Append(" ON 1 = 1");
                             else
                             {
-                                sb.Append(" ON ").Append(tbsfrom[b].NavigateCondition ?? tbsfrom[b].On);
-                                if (string.IsNullOrEmpty(tbsfrom[b].Cascade) == false) sb.Append(" AND (").Append(tbsfrom[b].Cascade).Append(")");
+                                var onSql = tbsfrom[b].NavigateCondition ?? tbsfrom[b].On;
+                                sb.Append(" ON ").Append(onSql);
+                                if (string.IsNullOrEmpty(tbsfrom[b].Cascade) == false)
+                                {
+                                    if (string.IsNullOrEmpty(onSql)) sb.Append(tbsfrom[b].Cascade);
+                                    else sb.Append(" AND (").Append(tbsfrom[b].Cascade).Append(")");
+                                }
                             }
                         }
                         break;
diff --git a/Providers/FreeSql.Provider.SqlServer/Curd/SqlServerSelect.cs b/Providers/FreeSql.Provider.SqlServer/Curd/SqlServerSelect.cs
index 3eacc1e5..c3518557 100644
--- a/Providers/FreeSql.Provider.SqlServer/Curd/SqlServerSelect.cs
+++ b/Providers/FreeSql.Provider.SqlServer/Curd/SqlServerSelect.cs
@@ -66,8 +66,13 @@ namespace FreeSql.SqlServer.Curd
                             if (string.IsNullOrEmpty(tbsfrom[b].NavigateCondition) && string.IsNullOrEmpty(tbsfrom[b].On) && string.IsNullOrEmpty(tbsfrom[b].Cascade)) sb.Append(" ON 1 = 1");
                             else
                             {
-                                sb.Append(" ON ").Append(tbsfrom[b].NavigateCondition ?? tbsfrom[b].On);
-                                if (string.IsNullOrEmpty(tbsfrom[b].Cascade) == false) sb.Append(" AND (").Append(tbsfrom[b].Cascade).Append(")");
+                                var onSql = tbsfrom[b].NavigateCondition ?? tbsfrom[b].On;
+                                sb.Append(" ON ").Append(onSql);
+                                if (string.IsNullOrEmpty(tbsfrom[b].Cascade) == false)
+                                {
+                                    if (string.IsNullOrEmpty(onSql)) sb.Append(tbsfrom[b].Cascade);
+                                    else sb.Append(" AND (").Append(tbsfrom[b].Cascade).Append(")");
+                                }
                             }
                         }
                         break;
@@ -166,8 +171,13 @@ namespace FreeSql.SqlServer.Curd
                             if (string.IsNullOrEmpty(tbsfrom[b].NavigateCondition) && string.IsNullOrEmpty(tbsfrom[b].On) && string.IsNullOrEmpty(tbsfrom[b].Cascade)) sb.Append(" ON 1 = 1");
                             else
                             {
-                                sb.Append(" ON ").Append(tbsfrom[b].NavigateCondition ?? tbsfrom[b].On);
-                                if (string.IsNullOrEmpty(tbsfrom[b].Cascade) == false) sb.Append(" AND (").Append(tbsfrom[b].Cascade).Append(")");
+                                var onSql = tbsfrom[b].NavigateCondition ?? tbsfrom[b].On;
+                                sb.Append(" ON ").Append(onSql);
+                                if (string.IsNullOrEmpty(tbsfrom[b].Cascade) == false)
+                                {
+                                    if (string.IsNullOrEmpty(onSql)) sb.Append(tbsfrom[b].Cascade);
+                                    else sb.Append(" AND (").Append(tbsfrom[b].Cascade).Append(")");
+                                }
                             }
                         }
                         break;
diff --git a/Providers/FreeSql.Provider.Sqlite/Curd/SqliteSelect.cs b/Providers/FreeSql.Provider.Sqlite/Curd/SqliteSelect.cs
index dc65ab68..ba3af794 100644
--- a/Providers/FreeSql.Provider.Sqlite/Curd/SqliteSelect.cs
+++ b/Providers/FreeSql.Provider.Sqlite/Curd/SqliteSelect.cs
@@ -48,8 +48,13 @@ namespace FreeSql.Sqlite.Curd
                             if (string.IsNullOrEmpty(tbsfrom[b].NavigateCondition) && string.IsNullOrEmpty(tbsfrom[b].On) && string.IsNullOrEmpty(tbsfrom[b].Cascade)) sb.Append(" ON 1 = 1");
                             else
                             {
-                                sb.Append(" ON ").Append(tbsfrom[b].NavigateCondition ?? tbsfrom[b].On);
-                                if (string.IsNullOrEmpty(tbsfrom[b].Cascade) == false) sb.Append(" AND (").Append(tbsfrom[b].Cascade).Append(")");
+                                var onSql = tbsfrom[b].NavigateCondition ?? tbsfrom[b].On;
+                                sb.Append(" ON ").Append(onSql);
+                                if (string.IsNullOrEmpty(tbsfrom[b].Cascade) == false)
+                                {
+                                    if (string.IsNullOrEmpty(onSql)) sb.Append(tbsfrom[b].Cascade);
+                                    else sb.Append(" AND (").Append(tbsfrom[b].Cascade).Append(")");
+                                }
                             }
                         }
                         break;