From 9bd28b295250e768999d9460802cbc08424bcbc2 Mon Sep 17 00:00:00 2001
From: eileenmcnaugton <eileen@fuzion.co.nz>
Date: Tue, 8 Sep 2015 13:10:01 +1200
Subject: [PATCH] wmf: CRM-10700 use DELETE FROM instead of TRUNCATE

The performance of TRUNCATE is slower than DELETE FROM.

Probably due to

Note that this provides a way to stop hacking core
https://github.com/civicrm/civicrm-packages/pull/180
---
 CRM/ACL/BAO/Cache.php |  4 ++--
 CRM/Core/Config.php   | 12 ++++++------
 CRM/Core/Menu.php     |  2 +-
 3 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/CRM/ACL/BAO/Cache.php b/CRM/ACL/BAO/Cache.php
index 921adfeaf6c0..0a2b0ad6a44a 100644
--- a/CRM/ACL/BAO/Cache.php
+++ b/CRM/ACL/BAO/Cache.php
@@ -166,11 +166,11 @@ public static function resetCache() {
     // CRM_Core_DAO::singleValueQuery("DELETE FROM civicrm_acl_contact_cache"); // Transaction-safe
     if (CRM_Core_Transaction::isActive()) {
       CRM_Core_Transaction::addCallback(CRM_Core_Transaction::PHASE_POST_COMMIT, function () {
-        CRM_Core_DAO::singleValueQuery("TRUNCATE TABLE civicrm_acl_contact_cache");
+        CRM_Core_DAO::singleValueQuery("DELETE FROM civicrm_acl_contact_cache");
       });
     }
     else {
-      CRM_Core_DAO::singleValueQuery("TRUNCATE TABLE civicrm_acl_contact_cache");
+      CRM_Core_DAO::singleValueQuery("DELETE FROM civicrm_acl_contact_cache");
     }
   }
 
diff --git a/CRM/Core/Config.php b/CRM/Core/Config.php
index b9c632feb6d2..cc24b6895427 100644
--- a/CRM/Core/Config.php
+++ b/CRM/Core/Config.php
@@ -348,13 +348,13 @@ public function clearModuleList() {
    */
   public static function clearDBCache() {
     $queries = [
-      'TRUNCATE TABLE civicrm_acl_cache',
-      'TRUNCATE TABLE civicrm_acl_contact_cache',
-      'TRUNCATE TABLE civicrm_cache',
-      'TRUNCATE TABLE civicrm_prevnext_cache',
+      'DELETE FROM civicrm_acl_cache',
+      'DELETE FROM civicrm_acl_contact_cache',
+      'DELETE FROM civicrm_cache',
+      'DELETE FROM civicrm_prevnext_cache',
       'UPDATE civicrm_group SET cache_date = NULL',
-      'TRUNCATE TABLE civicrm_group_contact_cache',
-      'TRUNCATE TABLE civicrm_menu',
+      'DELETE FROM civicrm_group_contact_cache',
+      'DELETE FROM civicrm_menu',
       'UPDATE civicrm_setting SET value = NULL WHERE name="navigation" AND contact_id IS NOT NULL',
     ];
 
diff --git a/CRM/Core/Menu.php b/CRM/Core/Menu.php
index 796491120402..fce5d7c3f568 100644
--- a/CRM/Core/Menu.php
+++ b/CRM/Core/Menu.php
@@ -300,7 +300,7 @@ public static function build(&$menu) {
   public static function store($truncate = TRUE) {
     // first clean up the db
     if ($truncate) {
-      $query = 'TRUNCATE civicrm_menu';
+      $query = 'DELETE FROM civicrm_menu';
       CRM_Core_DAO::executeQuery($query);
     }
     $menuArray = self::items($truncate);