From 614711ff2189b20f06104848554ff5a3087b82a2 Mon Sep 17 00:00:00 2001
From: Cameron <e107inc@gmail.com>
Date: Mon, 25 Feb 2019 18:51:49 -0800
Subject: [PATCH] Database: Prevent gaps in PRIMARY index when using
 DUPLICATE_KEY_UPDATE with insert() method.

---
 e107_handlers/e_db_pdo_class.php | 2 ++
 e107_handlers/mysql_class.php    | 3 +++
 2 files changed, 5 insertions(+)

diff --git a/e107_handlers/e_db_pdo_class.php b/e107_handlers/e_db_pdo_class.php
index 88375b962..70830f370 100644
--- a/e107_handlers/e_db_pdo_class.php
+++ b/e107_handlers/e_db_pdo_class.php
@@ -856,6 +856,8 @@ class e_db_pdo implements e_db
 			elseif($this->mySQLresult === 2 || $this->mySQLresult === true) // updated
 			{
 				$result = true;
+				// reset auto-increment to prevent gaps.
+				$this->db_Query("ALTER TABLE ".$this->mySQLPrefix.$table."  AUTO_INCREMENT=1", NULL, 'db_Insert', $debug, $log_type, $log_remark);
 			}
 			elseif($this->mySQLresult === 0) // updated (no change)
 			{
diff --git a/e107_handlers/mysql_class.php b/e107_handlers/mysql_class.php
index cd1a60357..ecad1804a 100644
--- a/e107_handlers/mysql_class.php
+++ b/e107_handlers/mysql_class.php
@@ -1018,6 +1018,9 @@ class e_db_mysql
 			elseif($this->mySQLresult === 2 || $this->mySQLresult === true) // updated
 			{
 				$result = true;
+				// reset auto-increment to prevent gaps.
+				$this->db_Query("ALTER TABLE ".$this->mySQLPrefix.$table."  AUTO_INCREMENT=1", NULL, 'db_Insert', $debug, $log_type, $log_remark);
+
 			}
 			elseif($this->mySQLresult === 0) // updated (no change)
 			{