From 19990c92197c64588ac489fda6c23e34702d7db0 Mon Sep 17 00:00:00 2001
From: Venkata Sidagam <venkata.sidagam@oracle.com>
Date: Thu, 31 Oct 2013 23:02:44 +0530
Subject: Bug #12917164 DROP USER CAN'T DROP USERS WITH LEGACY     UPPER CASE
 HOST NAME ANYMORE

Description:
It is not possible to drop users with host names with upper case
letters in them. i.e DROP USER 'root'@'Tmp_Host_Name'; is failing
with error.

Analysis: Since the fix 11748570 we came up with lower case hostnames
as standard. But in the current bug the hostname is created by
mysql_install_db script is still having upper case hostnames.
So, if we have the hostname with upper case letters like(Tmp_Host_Name)
then we will have as it is stored in the mysql.user table.
In this case if use "'DROP USER 'root'@'Tmp_Host_Name';" it gives
error because we do compare with the lower case of hostname since the
11748570 fix.

Fix: We need to convert the hostname to lower case before storing into
the mysql.user table when we run the mysql_install_db script.
---
 scripts/mysql_system_tables_data.sql | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

(limited to 'scripts/mysql_system_tables_data.sql')

diff --git a/scripts/mysql_system_tables_data.sql b/scripts/mysql_system_tables_data.sql
index 7203e250656..82b185ebefc 100644
--- a/scripts/mysql_system_tables_data.sql
+++ b/scripts/mysql_system_tables_data.sql
@@ -25,8 +25,7 @@
 -- Get the hostname, if the hostname has any wildcard character like "_" or "%" 
 -- add escape character in front of wildcard character to convert "_" or "%" to
 -- a plain character
-SET @get_hostname= @@hostname;
-SELECT REPLACE((SELECT REPLACE(@get_hostname,'_','\_')),'%','\%') INTO @current_hostname;
+SELECT LOWER( REPLACE((SELECT REPLACE(@@hostname,'_','\_')),'%','\%') )INTO @current_hostname;
 
 
 -- Fill "db" table with default grants for anyone to
@@ -42,9 +41,9 @@ DROP TABLE tmp_db;
 -- from local machine if "user" table didn't exist before
 CREATE TEMPORARY TABLE tmp_user LIKE user;
 INSERT INTO tmp_user VALUES ('localhost','root','','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','','','','',0,0,0,0);
-REPLACE INTO tmp_user SELECT @current_hostname,'root','','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','','','','',0,0,0,0 FROM dual WHERE LOWER( @current_hostname) != 'localhost';
+REPLACE INTO tmp_user SELECT @current_hostname,'root','','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','','','','',0,0,0,0 FROM dual WHERE @current_hostname != 'localhost';
 REPLACE INTO tmp_user VALUES ('127.0.0.1','root','','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','','','','',0,0,0,0);
 INSERT INTO tmp_user (host,user) VALUES ('localhost','');
-INSERT INTO tmp_user (host,user) SELECT @current_hostname,'' FROM dual WHERE LOWER(@current_hostname ) != 'localhost';
+INSERT INTO tmp_user (host,user) SELECT @current_hostname,'' FROM dual WHERE @current_hostname != 'localhost';
 INSERT INTO user SELECT * FROM tmp_user WHERE @had_user_table=0;
 DROP TABLE tmp_user;
-- 
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