diff --git a/Src/Asp.NetCore2/SqlSugar/Abstract/QueryableProvider/QueryableProvider.cs b/Src/Asp.NetCore2/SqlSugar/Abstract/QueryableProvider/QueryableProvider.cs
index ae3b3895b..4eaf5d379 100644
--- a/Src/Asp.NetCore2/SqlSugar/Abstract/QueryableProvider/QueryableProvider.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Abstract/QueryableProvider/QueryableProvider.cs
@@ -645,7 +645,11 @@ namespace SqlSugar
                 this.Where<T>(whereString, whereObj);
             return this;
         }
-
+        public virtual ISugarQueryable<T> Where(IFuncModel funcModel) 
+        {
+            var obj= this.SqlBuilder.FuncModelToSql(funcModel);
+            return this.Where(obj.Key, obj.Value);
+        }
         public virtual ISugarQueryable<T> Where(List<IConditionalModel> conditionalModels)
         {
             if (conditionalModels.IsNullOrEmpty()) return this;
@@ -3626,7 +3630,11 @@ namespace SqlSugar
             base.Where(conditionalModels);
             return this;
         }
-
+        public new ISugarQueryable<T,T2> Where(IFuncModel funcModel)
+        {
+            var obj = this.SqlBuilder.FuncModelToSql(funcModel);
+            return this.Where(obj.Key, obj.Value);
+        }
         public new ISugarQueryable<T, T2> WhereIF(bool isWhere, string whereString, object whereObj)
         {
             if (!isWhere) return this;
@@ -4233,7 +4241,11 @@ namespace SqlSugar
             base.Where(conditionalModels);
             return this;
         }
-
+        public new ISugarQueryable<T, T2,T3> Where(IFuncModel funcModel)
+        {
+            var obj = this.SqlBuilder.FuncModelToSql(funcModel);
+            return this.Where(obj.Key, obj.Value);
+        }
         public ISugarQueryable<T, T2, T3> WhereIF(bool isWhere, Expression<Func<T, T2, T3, bool>> expression)
         {
             if (isWhere)
@@ -4619,7 +4631,11 @@ namespace SqlSugar
             base.Where(conditionalModels);
             return this;
         }
-
+        public new ISugarQueryable<T, T2,T3,T4> Where(IFuncModel funcModel)
+        {
+            var obj = this.SqlBuilder.FuncModelToSql(funcModel);
+            return this.Where(obj.Key, obj.Value);
+        }
         public new ISugarQueryable<T, T2, T3, T4> WhereIF(bool isWhere, Expression<Func<T, bool>> expression)
         {
             if (isWhere)
@@ -5229,7 +5245,11 @@ namespace SqlSugar
             base.Where(conditionalModels);
             return this;
         }
-
+        public new ISugarQueryable<T, T2, T3, T4,T5> Where(IFuncModel funcModel)
+        {
+            var obj = this.SqlBuilder.FuncModelToSql(funcModel);
+            return this.Where(obj.Key, obj.Value);
+        }
         public new ISugarQueryable<T, T2, T3, T4, T5> WhereIF(bool isWhere, Expression<Func<T, bool>> expression)
         {
             if (isWhere)
@@ -5778,7 +5798,11 @@ namespace SqlSugar
             base.Where(conditionalModels);
             return this;
         }
-
+        public new ISugarQueryable<T, T2, T3, T4, T5,T6> Where(IFuncModel funcModel)
+        {
+            var obj = this.SqlBuilder.FuncModelToSql(funcModel);
+            return this.Where(obj.Key, obj.Value);
+        }
         public new ISugarQueryable<T, T2, T3, T4, T5, T6> WhereIF(bool isWhere, Expression<Func<T, bool>> expression)
         {
             if (isWhere)
diff --git a/Src/Asp.NetCore2/SqlSugar/Interface/IQueryable.cs b/Src/Asp.NetCore2/SqlSugar/Interface/IQueryable.cs
index 3ec459521..ee955aa93 100644
--- a/Src/Asp.NetCore2/SqlSugar/Interface/IQueryable.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Interface/IQueryable.cs
@@ -61,6 +61,7 @@ namespace SqlSugar
         ISugarQueryable<T> TranLock(DbLockType? LockType = DbLockType.Wait);
         ISugarQueryable<T> Where(Expression<Func<T, bool>> expression);
         ISugarQueryable<T> Where(string whereString, object parameters = null);
+        ISugarQueryable<T> Where(IFuncModel funcModel);
         ISugarQueryable<T> Where(List<IConditionalModel> conditionalModels);
         ISugarQueryable<T> Where(List<IConditionalModel> conditionalModels,bool isWrap);
         ISugarQueryable<T> Where(string fieldName, string conditionalType, object fieldValue);
@@ -220,6 +221,7 @@ namespace SqlSugar
         new ISugarQueryable<T, T2> Where(Expression<Func<T, bool>> expression);
         ISugarQueryable<T, T2> Where(Expression<Func<T, T2, bool>> expression);
         new ISugarQueryable<T, T2> Where(List<IConditionalModel> conditionalModels);
+        new ISugarQueryable<T,T2> Where(IFuncModel funcModel);
 
         new ISugarQueryable<T, T2> WhereIF(bool isWhere, Expression<Func<T, bool>> expression);
         ISugarQueryable<T, T2> WhereIF(bool isWhere, Expression<Func<T, T2, bool>> expression);
@@ -319,7 +321,7 @@ namespace SqlSugar
         ISugarQueryable<T, T2, T3> Where(Expression<Func<T, T2, bool>> expression);
         ISugarQueryable<T, T2, T3> Where(Expression<Func<T, T2, T3, bool>> expression);
         new ISugarQueryable<T, T2, T3> Where(List<IConditionalModel> conditionalModels);
-
+        new ISugarQueryable<T, T2,T3> Where(IFuncModel funcModel);
         new ISugarQueryable<T, T2, T3> WhereIF(bool isWhere, Expression<Func<T, bool>> expression);
         ISugarQueryable<T, T2, T3> WhereIF(bool isWhere, Expression<Func<T, T2, bool>> expression);
         ISugarQueryable<T, T2, T3> WhereIF(bool isWhere, Expression<Func<T, T2, T3, bool>> expression);
@@ -434,7 +436,7 @@ namespace SqlSugar
         ISugarQueryable<T, T2, T3, T4> Where(Expression<Func<T, T2, T3, bool>> expression);
         ISugarQueryable<T, T2, T3, T4> Where(Expression<Func<T, T2, T3, T4, bool>> expression);
         new ISugarQueryable<T, T2, T3, T4> Where(List<IConditionalModel> conditionalModels);
-
+        new ISugarQueryable<T, T2, T3,T4> Where(IFuncModel funcModel);
         new ISugarQueryable<T, T2, T3, T4> WhereIF(bool isWhere, Expression<Func<T, bool>> expression);
         ISugarQueryable<T, T2, T3, T4> WhereIF(bool isWhere, Expression<Func<T, T2, bool>> expression);
         ISugarQueryable<T, T2, T3, T4> WhereIF(bool isWhere, Expression<Func<T, T2, T3, bool>> expression);
@@ -560,7 +562,7 @@ namespace SqlSugar
         ISugarQueryable<T, T2, T3, T4, T5> Where(Expression<Func<T, T2, T3, T4, T5, bool>> expression);
         new ISugarQueryable<T, T2, T3, T4, T5> Where(List<IConditionalModel> conditionalModels);
 
-
+        new ISugarQueryable<T, T2, T3, T4,T5> Where(IFuncModel funcModel);
         new ISugarQueryable<T, T2, T3, T4, T5> WhereIF(bool isWhere, Expression<Func<T, bool>> expression);
         ISugarQueryable<T, T2, T3, T4, T5> WhereIF(bool isWhere, Expression<Func<T, T2, bool>> expression);
         ISugarQueryable<T, T2, T3, T4, T5> WhereIF(bool isWhere, Expression<Func<T, T2, T3, bool>> expression);
@@ -678,7 +680,7 @@ namespace SqlSugar
         ISugarQueryable<T, T2, T3, T4, T5, T6> Where(Expression<Func<T, T2, T3, T4, T5, bool>> expression);
         ISugarQueryable<T, T2, T3, T4, T5, T6> Where(Expression<Func<T, T2, T3, T4, T5, T6, bool>> expression);
         new ISugarQueryable<T, T2, T3, T4, T5, T6> Where(List<IConditionalModel> conditionalModels);
-
+        new ISugarQueryable<T, T2, T3, T4, T5,T6> Where(IFuncModel funcModel);
         new ISugarQueryable<T, T2, T3, T4, T5, T6> WhereIF(bool isWhere, Expression<Func<T, bool>> expression);
         ISugarQueryable<T, T2, T3, T4, T5, T6> WhereIF(bool isWhere, Expression<Func<T, T2, bool>> expression);
         ISugarQueryable<T, T2, T3, T4, T5, T6> WhereIF(bool isWhere, Expression<Func<T, T2, T3, bool>> expression);
diff --git a/Src/Asp.NetCore2/SqlSugar/Json2Sql/ModelToSql/SqlPart.cs b/Src/Asp.NetCore2/SqlSugar/Json2Sql/ModelToSql/SqlPart.cs
index 153ed3b09..3073b3b2a 100644
--- a/Src/Asp.NetCore2/SqlSugar/Json2Sql/ModelToSql/SqlPart.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Json2Sql/ModelToSql/SqlPart.cs
@@ -8,7 +8,7 @@ namespace SqlSugar
     public abstract partial class SqlBuilderProvider : SqlBuilderAccessory, ISqlBuilder
     {
         #region  Variable
-        private string[] SqlSplicingOperator = new string[] { ">", ">=", "<", "<=", "(", ")", "=", "||", "&&","&","|" }; 
+        private string[] SqlSplicingOperator = new string[] { ">", ">=", "<", "<=", "(", ")", "=", "||", "&&","&","|","null","is","isnot" }; 
         #endregion
 
         #region Root
@@ -44,8 +44,8 @@ namespace SqlSugar
         private static string GetSqlSplicingOperator(object value)
         {
             var result= value.ObjToString();
-            if (result == "||") return "AND";
-            else if (result == "&&") return "OR";
+            if (result == "||") return "OR";
+            else if (result == "&&") return "AND";
             return result;
         }
         private static string GetSqlPartError(object value)
diff --git a/Src/Asp.NetCore2/SqlSugar/Realization/Sqlite/SqlBuilder/SqliteUpdateBuilder.cs b/Src/Asp.NetCore2/SqlSugar/Realization/Sqlite/SqlBuilder/SqliteUpdateBuilder.cs
index a82d5209c..b50677c51 100644
--- a/Src/Asp.NetCore2/SqlSugar/Realization/Sqlite/SqlBuilder/SqliteUpdateBuilder.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Realization/Sqlite/SqlBuilder/SqliteUpdateBuilder.cs
@@ -60,6 +60,10 @@ namespace SqlSugar
                         return "'" + date.ToString("yyyy-MM-dd HH:mm:ss.fff") + "'";
                     }
                 }
+                else if (type == UtilConstants.DateTimeOffsetType)
+                {
+                    return GetDateTimeOffsetString(value);
+                }
                 else if (type == UtilConstants.DateType && iswhere) 
                 {
                     var parameterName = this.Builder.SqlParameterKeyWord + name + i;
@@ -97,5 +101,15 @@ namespace SqlSugar
                 }
             }
         }
+
+        private object GetDateTimeOffsetString(object value)
+        {
+            var date = UtilMethods.ConvertFromDateTimeOffset((DateTimeOffset)value);
+            if (date < UtilMethods.GetMinDate(this.Context.CurrentConnectionConfig))
+            {
+                date = UtilMethods.GetMinDate(this.Context.CurrentConnectionConfig);
+            }
+            return "'" + date.ToString("yyyy-MM-dd HH:mm:ss.fff") + "'";
+        }
     }
 }