-

OrmTest/UnitTest/ExpressionTest/Method.cs

@@ -44,7 +44,14 @@ namespace OrmTest.UnitTest
 
         private void Between()
         {
-            //throw new NotImplementedException();
+            Expression<Func<Student, bool>> exp = it => NBORM.Between(it.Name,1, 2);
+            SqlServerExpressionContext expContext = new SqlServerExpressionContext();
+            expContext.Resolve(exp, ResolveExpressType.WhereSingle);
+            var value = expContext.Result.GetString();
+            var pars = expContext.Parameters;
+            base.Check(value, pars, " ([Name] BETWEEN @MethodConst0 AND @MethodConst1) ", new List<SugarParameter>() {
+                new SugarParameter("@MethodConst0",1),new SugarParameter("@MethodConst1",2),
+            }, "Between");
         }
 
         private void DateAddByType()

SqlSugar/ExpressionsToSql/Method/DefaultDbMethod.cs

@@ -74,5 +74,13 @@ namespace SqlSugar
             var parameter2 = model.Args[1];
             return string.Format(" (DATEADD(day,{1},{0})) ", parameter.Value, parameter2.Value); 
         }
+
+        public object Between(MethodCallExpressionModel model)
+        {
+            var parameter = model.Args[0];
+            var parameter1 = model.Args[1];
+            var parameter2 = model.Args[2];
+            return string.Format(" ({0} BETWEEN {1} AND {2}) ", parameter.Value, parameter1.Value, parameter2.Value);
+        }
     }
 }

SqlSugar/ExpressionsToSql/Method/IDbMethods.cs

@@ -21,5 +21,6 @@ namespace SqlSugar
         object DateIsSameByType(MethodCallExpressionModel model);
         object DateAddByType(MethodCallExpressionModel model);
         object DateAddDay(MethodCallExpressionModel model);
+        object Between(MethodCallExpressionModel model);
     }
 }

SqlSugar/ExpressionsToSql/Method/NBORM.cs

@@ -18,5 +18,6 @@ namespace SqlSugar
         public static bool DateIsSame(DateTime date1, DateTime date2, DateType dataType)  { throw new NotImplementedException(); }
         public static bool DateAdd(DateTime date1, int addValue, DateType millisecond){ throw new NotImplementedException(); }
         public static bool DateAdd(DateTime date1, int addValue) { throw new NotImplementedException(); }
+        public static bool Between(object value, object start, object end){ throw new NotImplementedException();}
     }
 }

SqlSugar/ExpressionsToSql/ResolveItems/MethodCallExpressionResolve.cs

@@ -90,6 +90,8 @@ namespace SqlSugar
                         return this.Context.DbMehtods.DateAddDay(model);
                     else
                         return this.Context.DbMehtods.DateAddByType(model);
+                case "Between":
+                    return this.Context.DbMehtods.Between(model);
                 default:
                     break;
             }