diff --git a/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/ResolveItems/MethodCallExpressionResolve.cs b/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/ResolveItems/MethodCallExpressionResolve.cs
index d0e49ad01..e5c6d7d9d 100644
--- a/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/ResolveItems/MethodCallExpressionResolve.cs
+++ b/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/ResolveItems/MethodCallExpressionResolve.cs
@@ -278,7 +278,11 @@ namespace SqlSugar
             foreach (var item in args)
             {
                 var expItem = item;
-                if (item is UnaryExpression)
+                if (name=="IIF" && item is UnaryExpression)
+                {
+                    expItem = ExpressionTool.RemoveConvert(expItem);
+                }
+                else if (item is UnaryExpression)
                 {
                     expItem = (item as UnaryExpression).Operand;
                 }
diff --git a/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/ResolveItems/OneToManyNavgateExpressionN.cs b/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/ResolveItems/OneToManyNavgateExpressionN.cs
index d57b05a5c..443c8486a 100644
--- a/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/ResolveItems/OneToManyNavgateExpressionN.cs
+++ b/Src/Asp.NetCore2/SqlSugar/ExpressionsToSql/ResolveItems/OneToManyNavgateExpressionN.cs
@@ -234,7 +234,7 @@ namespace SqlSugar
             Check.ExceptionEasy(AidColumn == null, $" {BidColumn.EntityName} need primary key ", $"{BidColumn.EntityName}需要主键");
 
             var abShort = abEntity.EntityName + "_1";
-            var abOn = $" {abShort}.{queryable.SqlBuilder.GetTranslationColumnName(Ab_Aid.DbColumnName)}={formInfo.ThisEntityInfo.DbTableName + (i - 1)}.{queryable.SqlBuilder.GetTranslationColumnName(AidColumn.DbColumnName)}";
+            var abOn = $" {queryable.SqlBuilder.GetTranslationColumnName(abShort)}.{queryable.SqlBuilder.GetTranslationColumnName(Ab_Aid.DbColumnName)}={formInfo.ThisEntityInfo.DbTableName + (i - 1)}.{queryable.SqlBuilder.GetTranslationColumnName(AidColumn.DbColumnName)}";
             queryable.AddJoinInfo(abEntity.DbTableName, abShort, abOn, JoinType.Inner);
             var On = $" {bshortName}.{queryable.SqlBuilder.GetTranslationColumnName(BidColumn.DbColumnName)}={abShort}.{queryable.SqlBuilder.GetTranslationColumnName(Ab_Bid.DbColumnName)}";
             queryable.AddJoinInfo(BidColumn.DbTableName, bshortName, On, JoinType.Inner);