diff --git a/force-app/main/default/classes/SOQL.cls b/force-app/main/default/classes/SOQL.cls
index 7ed6810..8eac08f 100644
--- a/force-app/main/default/classes/SOQL.cls
+++ b/force-app/main/default/classes/SOQL.cls
@@ -132,6 +132,7 @@ public virtual inherited sharing class SOQL implements Queryable {
         Queryable byIds(List<SObject> records);
         Queryable byRecordType(String recordTypeDeveloperName);
         // RESULT
+        Id toId();
         Boolean doExist();
         String toString();
         Object toValueOf(SObjectField fieldToExtract);
@@ -781,6 +782,11 @@ public virtual inherited sharing class SOQL implements Queryable {
         return binder.getBindingMap();
     }
 
+    public Id toId() {
+        builder.fields.clearAllFields(); // other fields not needed
+        return toObject()?.Id;
+    }
+
     public Boolean doExist() {
         builder.fields.clearAllFields(); // other fields not needed
         return toList().size() > 0;
@@ -1119,7 +1125,9 @@ public virtual inherited sharing class SOQL implements Queryable {
             if (!groupedFields.isEmpty() || !aggregateFunctions.isEmpty()) {
                 List<String> selectFields = new List<String>();
 
-                removeNotGroupedFields();
+                // To avoid "Field must be grouped or aggregated" error
+                // retain only grouped or aggregated fields
+                fields.retainAll(groupedFields);
 
                 selectFields.addAll(fields);
                 selectFields.addAll(aggregateFunctions);
@@ -1129,15 +1137,6 @@ public virtual inherited sharing class SOQL implements Queryable {
 
             return 'SELECT ' + String.join(fields, ', ');
         }
-
-        public void removeNotGroupedFields() {
-             // To avoid "Field must be grouped or aggregated" error
-            for (String field : fields) {
-                if (!groupedFields.contains(field)) {
-                    fields.remove(field);
-                }
-            }
-        }
     }
 
     private class SoqlSubQuery implements SubQuery {
diff --git a/force-app/main/default/classes/SOQL.cls-meta.xml b/force-app/main/default/classes/SOQL.cls-meta.xml
index 651b172..998805a 100644
--- a/force-app/main/default/classes/SOQL.cls-meta.xml
+++ b/force-app/main/default/classes/SOQL.cls-meta.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <ApexClass xmlns="http://soap.sforce.com/2006/04/metadata">
-    <apiVersion>61.0</apiVersion>
+    <apiVersion>62.0</apiVersion>
     <status>Active</status>
 </ApexClass>
diff --git a/force-app/main/default/classes/SOQL_Test.cls b/force-app/main/default/classes/SOQL_Test.cls
index 3d9a31f..d4d9850 100644
--- a/force-app/main/default/classes/SOQL_Test.cls
+++ b/force-app/main/default/classes/SOQL_Test.cls
@@ -1965,6 +1965,20 @@ private class SOQL_Test {
         Assert.areEqual('SELECT LeadSource FROM Lead GROUP BY LeadSource', soql);
     }
 
+    @IsTest
+    static void groupByWithDefaultFieldsAndAggregateFunction() {
+        // Test
+        String soql = SOQL.of(Lead.SObjectType)
+            .with(Lead.FirstName, Lead.LastName, Lead.Email)
+            .count(Lead.Name)
+            .with(Lead.LeadSource)
+            .groupBy(Lead.LeadSource)
+            .toString();
+
+        // Verify
+        Assert.areEqual('SELECT LeadSource, COUNT(Name) FROM Lead GROUP BY LeadSource', soql);
+    }
+
     @IsTest
     static void havingFilterWithSObjectField() {
         // Test
@@ -3008,6 +3022,19 @@ private class SOQL_Test {
         Assert.areEqual(2, result);
     }
 
+    @IsTest
+    static void toId() {
+        // Setup
+        Account acc = new Account(Name = 'Test 1');
+        insert acc;
+
+        // Test
+        Id accountId = SOQL.of(Account.SObjectType).byId(acc).toId();
+
+        // Verify
+        Assert.areEqual(acc.Id, accountId);
+    }
+
     @IsTest
     static void doExist() {
         // Setup
diff --git a/force-app/main/default/classes/SOQL_Test.cls-meta.xml b/force-app/main/default/classes/SOQL_Test.cls-meta.xml
index 651b172..998805a 100644
--- a/force-app/main/default/classes/SOQL_Test.cls-meta.xml
+++ b/force-app/main/default/classes/SOQL_Test.cls-meta.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <ApexClass xmlns="http://soap.sforce.com/2006/04/metadata">
-    <apiVersion>61.0</apiVersion>
+    <apiVersion>62.0</apiVersion>
     <status>Active</status>
 </ApexClass>
diff --git a/website/docs/api/soql.md b/website/docs/api/soql.md
index 68f6f9f..e1bb031 100644
--- a/website/docs/api/soql.md
+++ b/website/docs/api/soql.md
@@ -167,6 +167,7 @@ The following are methods for `SOQL`.
 
 [**RESULT**](#result)
 
+- [`toId()`](#toid)
 - [`doExist()`](#doexist)
 - [`toValueOf(SObjectField fieldToExtract)`](#tovalueof)
 - [`toValuesOf(SObjectField fieldToExtract)`](#tovaluesof)
@@ -2143,8 +2144,29 @@ SOQL.of(Account.SObjectType)
 
 ## RESULT
 
+### toId
+
+```apex
+Id toId()
+```
+
+**Example**
+
+```apex
+Id adminProfileId = SOQL.of(Profile.SObjectType)
+        .whereAre(SOQL.Filter.name().equal('System Administrator'))
+        .toId();
+
+new User (
+    // ...
+    ProfileId = adminProfileId
+);
+```
+
 ### doExist
 
+**Signature**
+
 ```apex
 Boolean doExist()
 ```