diff --git a/jOOQ/src/main/java/org/jooq/impl/SelectQueryImpl.java b/jOOQ/src/main/java/org/jooq/impl/SelectQueryImpl.java
index ded141dbec..446bbccd29 100644
--- a/jOOQ/src/main/java/org/jooq/impl/SelectQueryImpl.java
+++ b/jOOQ/src/main/java/org/jooq/impl/SelectQueryImpl.java
@@ -3636,7 +3636,10 @@ final class SelectQueryImpl<R extends Record> extends AbstractResultQuery<R> imp
 
 
             || WRAP_EXP_BODY_IN_DERIVED_TABLE_ORDER_BY.contains(ctx.dialect()) && !getOrderBy().isEmpty()
-        );
+        )
+            // [#15189] Window functions calculated in "alternative fields" must be calculated
+            //          *after* qualify filtering has been done
+            || hasAlternativeFields && qualify.hasWhere();
     }