From 47ecc2c46abcfafbcf158ddcfb77e678a96a3859 Mon Sep 17 00:00:00 2001
From: francesco <francesco.bagnoli.69@gmail.com>
Date: Tue, 4 Feb 2025 18:00:50 +0100
Subject: [PATCH 1/3] perf(pg-native): pre-shaped result rows

Porting on pg-native https://github.com/brianc/node-postgres/issues/3042
---
 packages/pg-native/lib/build-result.js | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/packages/pg-native/lib/build-result.js b/packages/pg-native/lib/build-result.js
index c43e1ba3e..02e365ce9 100644
--- a/packages/pg-native/lib/build-result.js
+++ b/packages/pg-native/lib/build-result.js
@@ -9,6 +9,7 @@ class Result {
     this.rowCount = undefined
     this.fields = []
     this.rows = []
+    this._prebuiltEmptyResultObject = null
   }
 
   consumeCommand(pq) {
@@ -19,12 +20,16 @@ class Result {
   consumeFields(pq) {
     const nfields = pq.nfields()
     this.fields = new Array(nfields)
+    var row = {}
     for (var x = 0; x < nfields; x++) {
+      var name = pq.fname(x);
+      row[name] = null
       this.fields[x] = {
-        name: pq.fname(x),
+        name: name,
         dataTypeID: pq.ftype(x),
       }
     }
+    this._prebuiltEmptyResultObject = { ...row }
   }
 
   consumeRows(pq) {
@@ -36,7 +41,7 @@ class Result {
   }
 
   consumeRowAsObject(pq, rowIndex) {
-    const row = {}
+    const row = { ...this._prebuiltEmptyResultObject }
     for (var j = 0; j < this.fields.length; j++) {
       row[this.fields[j].name] = this.readValue(pq, rowIndex, j)
     }

From 5fd01a17516e5fe553ccc5a410bdac969aeced94 Mon Sep 17 00:00:00 2001
From: francesco <francesco.bagnoli.69@gmail.com>
Date: Wed, 5 Feb 2025 16:07:55 +0100
Subject: [PATCH 2/3] fix: lint

---
 packages/pg-native/lib/build-result.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/pg-native/lib/build-result.js b/packages/pg-native/lib/build-result.js
index 02e365ce9..074f76593 100644
--- a/packages/pg-native/lib/build-result.js
+++ b/packages/pg-native/lib/build-result.js
@@ -22,7 +22,7 @@ class Result {
     this.fields = new Array(nfields)
     var row = {}
     for (var x = 0; x < nfields; x++) {
-      var name = pq.fname(x);
+      var name = pq.fname(x)
       row[name] = null
       this.fields[x] = {
         name: name,

From c44173a3b5792e311c59be4b056ad76e0ba61925 Mon Sep 17 00:00:00 2001
From: francesco <francesco.bagnoli.69@gmail.com>
Date: Tue, 11 Feb 2025 16:34:01 +0100
Subject: [PATCH 3/3] perf(pg-native): avoid useless spread

---
 packages/pg-native/lib/build-result.js | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/packages/pg-native/lib/build-result.js b/packages/pg-native/lib/build-result.js
index 074f76593..7257b5895 100644
--- a/packages/pg-native/lib/build-result.js
+++ b/packages/pg-native/lib/build-result.js
@@ -20,16 +20,15 @@ class Result {
   consumeFields(pq) {
     const nfields = pq.nfields()
     this.fields = new Array(nfields)
-    var row = {}
+    this._prebuiltEmptyResultObject = {}
     for (var x = 0; x < nfields; x++) {
       var name = pq.fname(x)
-      row[name] = null
+      this._prebuiltEmptyResultObject[name] = null
       this.fields[x] = {
         name: name,
         dataTypeID: pq.ftype(x),
       }
     }
-    this._prebuiltEmptyResultObject = { ...row }
   }
 
   consumeRows(pq) {