with related field

force-app/main/default/classes/SOQL.cls

@@ -49,6 +49,7 @@ public inherited sharing class SOQL implements Queryable {
         SOQL with(Set<SObjectField> fields);
         SOQL with(List<SObjectField> fields);
         SOQL with(String fields);
+        SOQL with(String relationshipName, SObjectField field);
         SOQL with(String relationshipName, List<SObjectField> fields);
         SOQL with(SubQuery subQuery); // SOQL.SubQuery
 
@@ -233,6 +234,11 @@ public inherited sharing class SOQL implements Queryable {
         return this;
     }
 
+    public SOQL with(String relationshipName, SObjectField field) {
+        builder.fields.with(relationshipName, field);
+        return this;
+    }
+
     public SOQL with(String relationshipName, List<SObjectField> fields) {
         builder.fields.with(relationshipName, fields);
         return this;

force-app/main/default/classes/SOQLTest.cls

@@ -91,6 +91,20 @@ private class SOQLTest {
         Assert.areEqual('SELECT Id, Name, BillingCity FROM Account', soql);
     }
 
+    @IsTest
+    static void withRelatedField() {
+        // Test
+        String soql = SOQL.of(Account.SObjectType)
+            .with(new List<SObjectField>{
+                Account.Name, Account.BillingCity
+            })
+            .with('CreatedBy', User.Name)
+            .toString();
+
+        // Verify
+        Assert.areEqual('SELECT Name, BillingCity, CreatedBy.Name FROM Account', soql);
+    }
+
     @IsTest
     static void withRelatedFields() {
         // Test

website/docs/api/soql.md

@@ -95,11 +95,33 @@ SOQL.of(Account.SObjectType)
     .toList();
 ```
 
+### with related field
+
+Allows to add parent field to a query.
+
+**Signature**
+
+```apex
+SOQL with(String relationshipName, SObjectField field)
+```
+
+**Example**
+
+```sql
+SELECT CreatedBy.Name
+FROM Account
+```
+```apex
+SOQL.of(Account.SObjectType)
+    .with('CreatedBy', User.Name)
+    .toList();
+```
+
 ### with related fields
 
 [SELECT](https://developer.salesforce.com/docs/atlas.en-us.soql_sosl.meta/soql_sosl/sforce_api_calls_soql_select_fields.htm)
 
-Allows to add parent field to a query.
+Allows to add parent fields to a query.
 
 **Signature**