Update mongodb

Src/Asp.NetCore2/MongoDbTest/UnitTest/QueryWhere.cs

@@ -53,6 +53,7 @@ namespace MongoDbTest
 
             var list5 = db.Queryable<Student>().Where(it =>it.CreateDateTime==DateTime.Now.Date).ToList();
             var list6 = db.Queryable<Student>().Where(it => it.CreateDateTime == DateTime.Now.AddDays(1)).ToList();
+            var list7 = db.Queryable<Student>().Where(it => it.CreateDateTime.Date == DateTime.Now.AddDays(1)).ToList();
         }
 
         private static void ValidateStudentData(SqlSugar.SqlSugarClient db)

Src/Asp.NetCore2/SqlSugar.MongoDbCore/ExpToSql/Models/SqlFuncBinaryExpressionInfo.cs

@@ -0,0 +1,24 @@
+using System;
+using System.Collections.Generic;
+using System.Linq.Expressions;
+using System.Text;
+
+namespace SqlSugar.MongoDb 
+{
+    public class SqlFuncBinaryExpressionInfo
+    {
+        public bool IsSqlFunc { get { return LeftIsFunc || RightIsFunc; } }
+        public bool LeftIsFunc { get; set; }
+        public bool RightIsFunc { get; set; }
+        public string LeftMethodName { get; set; }
+        public string RightMethodName { get; set; }
+        public SqlFuncBinaryExpressionInfoType methodType { get; set; } = SqlFuncBinaryExpressionInfoType.Default;
+        public Expression LeftExp { get;  set; }
+        public ExpressionType NodeType { get;  set; }
+        public Expression RightExp { get;  set; }
+    }
+    public enum SqlFuncBinaryExpressionInfoType 
+    {
+        Default=1
+    }
+}

Src/Asp.NetCore2/SqlSugar.MongoDbCore/ExpToSql/VisitorItems/BinaryExpressionTranslator/FieldExpressionCase.cs

@@ -12,6 +12,9 @@ namespace SqlSugar.MongoDb
         private BsonDocument FieldComparisonOrCalculationExpression(BinaryExpression expr)
         {
             OutParameters(expr, out var field, out var value, out var leftIsMember, out var rightIsMember, out var op);
+            var sqlFuncInfo = GetSqlFuncBinaryExpressionInfo(leftIsMember, rightIsMember, expr);
+            if (sqlFuncInfo.IsSqlFunc)
+                return GetCalculationOperationBySqlFunc(sqlFuncInfo, field, expr.NodeType, value, leftIsMember, rightIsMember);
             return op == null
                 ? GetCalculationOperation(field, expr.NodeType, value, leftIsMember, rightIsMember)
                 : GetComparisonOperation(expr, field, value, leftIsMember, rightIsMember, op);

Src/Asp.NetCore2/SqlSugar.MongoDbCore/ExpToSql/VisitorItems/BinaryExpressionTranslator/Helper.cs

@@ -23,7 +23,18 @@ namespace SqlSugar.MongoDb
             leftIsMember = leftVisitor.visitorContext?.ExpType == typeof(MemberExpression);
             rightIsMember = rightVisitor.visitorContext?.ExpType == typeof(MemberExpression);
 
-            op = expr.NodeType switch
+            op = GetComparisonOperator(expr);
+        }
+
+        public static string GetComparisonOperator(BinaryExpression expr)
+        {
+            var type = expr.NodeType;
+            return GetComparisonType(type);
+        }
+
+        public static string GetComparisonType(ExpressionType type)
+        {
+            return type switch
             {
                 ExpressionType.Equal => "$eq",
                 ExpressionType.NotEqual => "$ne",
@@ -34,6 +45,7 @@ namespace SqlSugar.MongoDb
                 _ => null
             };
         }
+
         private static string GetCalculationType(ExpressionType nodeType)
         {
             return nodeType switch

Src/Asp.NetCore2/SqlSugar.MongoDbCore/ExpToSql/VisitorItems/BinaryExpressionTranslator/Root.cs

@@ -23,9 +23,8 @@ namespace SqlSugar.MongoDb
         public BsonDocument Extract(BinaryExpression expr)
         {
             if (expr.NodeType == ExpressionType.AndAlso || expr.NodeType == ExpressionType.OrElse)
-            {
                 return LogicalBinaryExpression(expr);
-            } 
+            else
                return FieldComparisonOrCalculationExpression(expr);
         }
          

Src/Asp.NetCore2/SqlSugar.MongoDbCore/ExpToSql/VisitorItems/BinaryExpressionTranslator/SqlFuncExpression.cs

@@ -0,0 +1,70 @@
+using MongoDB.Bson;
+using System;
+using System.Collections.Generic;
+using System.Linq.Expressions;
+using System.Text;
+
+namespace SqlSugar.MongoDb 
+{
+    public partial class BinaryExpressionTranslator
+    { 
+        private BsonDocument GetCalculationOperationBySqlFunc(SqlFuncBinaryExpressionInfo expressionInfo, BsonValue field, ExpressionType nodeType, BsonValue value, bool leftIsMember, bool rightIsMember)
+        {
+            var mongoDbType = BinaryExpressionTranslator.GetComparisonType(expressionInfo.NodeType);
+            var left = new ExpressionVisitor(_context).Visit(expressionInfo.LeftExp);
+            var right = new ExpressionVisitor(_context).Visit(expressionInfo.RightExp);
+            var filter = new BsonDocument("$expr", new BsonDocument(mongoDbType, new BsonArray
+            {
+                left,
+                right
+            }));
+            return filter;
+        }
+        private SqlFuncBinaryExpressionInfo GetSqlFuncBinaryExpressionInfo(bool leftIsMember, bool rightIsMember, BinaryExpression expr)
+        {
+            SqlFuncBinaryExpressionInfo sqlFuncBinaryExpressionInfo = new SqlFuncBinaryExpressionInfo();
+            sqlFuncBinaryExpressionInfo.LeftMethodName= GetSystemDateMemberName(MongoDbExpTools.RemoveConvert(expr.Left));
+            if (!string.IsNullOrEmpty(sqlFuncBinaryExpressionInfo.LeftMethodName))
+            {
+                sqlFuncBinaryExpressionInfo.LeftIsFunc = true;
+            }
+            sqlFuncBinaryExpressionInfo.RightMethodName = GetSystemDateMemberName(MongoDbExpTools.RemoveConvert(expr.Right));
+            if (!string.IsNullOrEmpty(sqlFuncBinaryExpressionInfo.RightMethodName))
+            {
+                sqlFuncBinaryExpressionInfo.RightIsFunc = true;
+            }
+            sqlFuncBinaryExpressionInfo.LeftExp = MongoDbExpTools.RemoveConvert(expr.Left);
+            sqlFuncBinaryExpressionInfo.RightExp = MongoDbExpTools.RemoveConvert(expr.Right);
+            sqlFuncBinaryExpressionInfo.NodeType= expr.NodeType;
+            return sqlFuncBinaryExpressionInfo;
+        }
+        public static string GetSystemDateMemberName(Expression expr)
+        {
+            // 只处理 MemberExpression
+            // 确保是 MemberExpression（访问属性或字段）
+            if (expr is MemberExpression memberExpr&&ExpressionTool.GetParameters(expr).Count>0)
+            {
+                var memberName = memberExpr.Member.Name;
+
+                // 检查名字是否是我们关心的字段
+                if (!AllowedDateParts.Contains(memberName))
+                    return null;
+
+                // 获取访问者对象的类型（例如 x.CreateTime.Year 中的 x.CreateTime）
+                var expressionType = memberExpr.Expression.Type;
+
+                // 确保它是 System.DateTime（可拓展为 Nullable<DateTime>）
+                if (expressionType == typeof(DateTime) || expressionType == typeof(DateTime?))
+                {
+                    return memberName;
+                }
+            }
+
+            return null;
+        }
+        private static readonly List<string> AllowedDateParts = new List<string>()
+        {
+            "Date", "Year", "Month", "Day", "Hour", "Minute", "Second", "Millisecond"
+        };
+    }
+}