From 620e896a892682985dfeee63c6481330b4b9fca6 Mon Sep 17 00:00:00 2001
From: zadam <adam.zivner@gmail.com>
Date: Fri, 2 Oct 2020 21:53:25 +0200
Subject: [PATCH] faster content hash computation via in memory sorting

---
 src/services/content_hash.js | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/services/content_hash.js b/src/services/content_hash.js
index 6946cc33b..47ae6e535 100644
--- a/src/services/content_hash.js
+++ b/src/services/content_hash.js
@@ -12,9 +12,11 @@ const RecentNote = require('../entities/recent_note');
 const Option = require('../entities/option');
 
 function getSectorHashes(tableName, primaryKeyName, whereBranch) {
-    const hashes = sql.getRows(`SELECT ${primaryKeyName} AS id, hash FROM ${tableName} `
-        + (whereBranch ? `WHERE ${whereBranch} ` : '')
-        + ` ORDER BY ${primaryKeyName}`);
+    const hashes = sql.getRows(`SELECT ${primaryKeyName} AS id, hash FROM ${tableName}`
+        + (whereBranch ? ` WHERE ${whereBranch} ` : ''));
+
+    // sorting is faster in memory
+    hashes.sort((a, b) => a.id < b.id ? -1 : 1);
 
     const map = {};