From 57d64a7ef8fc8688af0c3a37b735ee265a129782 Mon Sep 17 00:00:00 2001
From: "Torsten Schulz (local)" <tsschulz@gmx.net>
Date: Thu, 29 Jan 2026 13:55:07 +0100
Subject: [PATCH] Refactor database performance diagnostics: Update SQL queries
 in diagnose-db-performance.js to use 'relname' instead of 'tablename' for
 improved accuracy in table and index size calculations. This change enhances
 the clarity and correctness of performance diagnostics.

---
 backend/diagnose-db-performance.js | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/backend/diagnose-db-performance.js b/backend/diagnose-db-performance.js
index 5901d33..e29d257 100755
--- a/backend/diagnose-db-performance.js
+++ b/backend/diagnose-db-performance.js
@@ -173,10 +173,10 @@ async function checkTableSizes() {
 
     const [tableSizes] = await sequelize.query(`
         SELECT 
-            schemaname || '.' || tablename as full_table_name,
-            pg_size_pretty(pg_total_relation_size(schemaname||'.'||tablename)) as total_size,
-            pg_size_pretty(pg_relation_size(schemaname||'.'||tablename)) as table_size,
-            pg_size_pretty(pg_total_relation_size(schemaname||'.'||tablename) - pg_relation_size(schemaname||'.'||tablename)) as indexes_size,
+            schemaname || '.' || relname as full_table_name,
+            pg_size_pretty(pg_total_relation_size(schemaname||'.'||relname)) as total_size,
+            pg_size_pretty(pg_relation_size(schemaname||'.'||relname)) as table_size,
+            pg_size_pretty(pg_total_relation_size(schemaname||'.'||relname) - pg_relation_size(schemaname||'.'||relname)) as indexes_size,
             n_live_tup as row_count,
             n_dead_tup as dead_rows,
             CASE 
@@ -189,7 +189,7 @@ async function checkTableSizes() {
             last_autoanalyze
         FROM pg_stat_user_tables
         WHERE schemaname IN ('falukant_data', 'falukant_type', 'community', 'logs')
-        ORDER BY pg_total_relation_size(schemaname||'.'||tablename) DESC
+        ORDER BY pg_total_relation_size(schemaname||'.'||relname) DESC
         LIMIT 20;
     `);
 
@@ -222,7 +222,7 @@ async function checkIndexes() {
     // Fehlende Indizes (basierend auf pg_stat_user_tables)
     const [missingIndexes] = await sequelize.query(`
         SELECT 
-            schemaname || '.' || tablename as table_name,
+            schemaname || '.' || relname as table_name,
             seq_scan,
             seq_tup_read,
             idx_scan,
@@ -247,7 +247,7 @@ async function checkIndexes() {
     const [unusedIndexes] = await sequelize.query(`
         SELECT 
             schemaname || '.' || indexrelname as index_name,
-            schemaname || '.' || tablename as table_name,
+            schemaname || '.' || relname as table_name,
             pg_size_pretty(pg_relation_size(indexrelid)) as index_size,
             idx_scan as scans
         FROM pg_stat_user_indexes
@@ -270,7 +270,7 @@ async function checkIndexes() {
     const [indexBloat] = await sequelize.query(`
         SELECT 
             schemaname || '.' || indexrelname as index_name,
-            schemaname || '.' || tablename as table_name,
+            schemaname || '.' || relname as table_name,
             pg_size_pretty(pg_relation_size(indexrelid)) as index_size,
             idx_scan as scans,
             idx_tup_read as tuples_read,
@@ -296,7 +296,7 @@ async function checkVacuumStatus() {
 
     const [vacuumStats] = await sequelize.query(`
         SELECT 
-            schemaname || '.' || tablename as table_name,
+            schemaname || '.' || relname as table_name,
             last_vacuum,
             last_autovacuum,
             last_analyze,