From b8045b24655182970582de8cbfa3880fe1967edb Mon Sep 17 00:00:00 2001
From: Jean-Marie Renouard <jmrenouard@gmail.com>
Date: Thu, 22 Jun 2023 16:56:16 +0200
Subject: [PATCH] Adding alter table to migrate MyISAM tables

---
 mysqltuner.pl | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/mysqltuner.pl b/mysqltuner.pl
index 3c99d84..0304e26 100644
--- a/mysqltuner.pl
+++ b/mysqltuner.pl
@@ -3780,8 +3780,15 @@ sub mysql_stats {
 sub mysql_myisam {
     subheaderprint "MyISAM Metrics";
     my $nb_myisam_tables = select_one(
-        "SELECT COUNT(*) FROM information_schema.TABLES WHERE ENGINE='MyISAM'");    
+        "SELECT COUNT(*) FROM information_schema.TABLES WHERE ENGINE='MyISAM' and TABLE_SCHEMA NOT IN ('mysql','information_schema','performance_schema')");    
+    push (@generalrec, "MyISAM engine is deprecated, consider migrating to InnoDB") if $nb_myisam_tables > 0;
     
+    if ($nb_myisam_tables > 0) {
+        badprint "Consider migrating $nb_myisam_tables followning tables to InnoDB:";
+        for my $myisam_table ( select_array("SELECT CONCAT(TABLE_SCHEMA, '.', TABLE_NAME) FROM information_schema.TABLES WHERE ENGINE='MyISAM' and TABLE_SCHEMA NOT IN ('mysql','information_schema','performance_schema')" )) {
+          infoprint "* SQL migration for $myisam_table: ALTER TABLE $myisam_table ENGINE=InnoDB;";
+        }
+    }     
     infoprint("General MyIsam metrics:");
     infoprint " +-- Total MyISAM Tables  : $nb_myisam_tables";
     infoprint " +-- Total MyISAM indexes : "