Hack to ensure that CHAR's created in 5.0 are not converted to VARCHAR even if

the row type is dynamic (For 4.1 tables old 'VARCHAR' fields are converted to
true VARCHAR in the next ALTER TABLE)
      
This ensures that one can use MySQL 5.0 privilege tables with MySQL 4.1.

(Fix imported from main 5.0 tree to 5.0.3 build tree.)


mysql-test/r/information_schema.result:
  Update results (for .frm version number change)
mysql-test/r/ndb_autodiscover.result:
  Update results (for .frm version number change)
mysql-test/r/ps_1general.result:
  Update results (for .frm version number change)
mysql-test/r/show_check.result:
  Update results (for .frm version number change)
mysql-test/r/view.result:
  Update results (for .frm version number change)
scripts/fill_func_tables.sh:
  Ensure that no privilege tables that is used in 4.1 uses VARCHAR
scripts/mysql_create_system_tables.sh:
  Ensure that no privilege tables that is used in 4.1 uses VARCHAR
sql/sql_table.cc:
  Only set create_info->varchar if we are using the new VARCHAR field
scripts/mysql_fix_privilege_tables.sh:
  Fixed bug that made it impossible to run the script from the mysql source dist
scripts/mysql_fix_privilege_tables.sql:
  Ensure that no privilege tables that is used in 4.1 uses VARCHAR
sql/table.cc:
  Hack to ensure that CHAR's created in 5.0 are not converted to VARCHAR even if
  the row type is dynamic (For 4.1 tables old 'VARCHAR' fields are converted to
  true VARCHAR in the next ALTER TABLE)

4 files changed, 47 insertions, 15 deletions

diff --git a/scripts/fill_func_tables.sh b/scripts/fill_func_tables.sh
index 459afee2fe1..203c730dd9a 100644
--- a/scripts/fill_func_tables.sh
+++ b/scripts/fill_func_tables.sh
@@ -131,8 +131,8 @@ print "USE mysql_help;\n";
 print "DROP TABLE IF EXISTS function;\n";
 print "CREATE TABLE function (";
 print "  func_id       int unsigned not null auto_increment,";
-print "  name          varchar(64) not null,";
-print "  url           varchar(128) not null,";
+print "  name          char(64) not null,";
+print "  url           char(128) not null,";
 print "  description   text not null,";
 print "  example       text not null,";
 print "  min_args      tinyint not null,";
@@ -145,8 +145,8 @@ print ") type=myisam;\n\n";
 print "DROP TABLE IF EXISTS function_category_name;\n";
 print "CREATE TABLE function_category_name (";
 print "  cat_id        smallint unsigned not null auto_increment,";
-print "  name          varchar(64) not null,";
-print "  url           varchar(128) not null,";
+print "  name          char(64) not null,";
+print "  url           char(128) not null,";
 print "  date_created  datetime not null,";
 print "  last_modified timestamp not null,";
 print "  primary key   (cat_id)";
diff --git a/scripts/mysql_create_system_tables.sh b/scripts/mysql_create_system_tables.sh
index 29f6f7b41e1..bb4c2f08193 100644
--- a/scripts/mysql_create_system_tables.sh
+++ b/scripts/mysql_create_system_tables.sh
@@ -270,11 +270,11 @@ then
 
   c_ht="$c_ht CREATE TABLE help_topic ("
   c_ht="$c_ht   help_topic_id    int unsigned not null,"
-  c_ht="$c_ht   name             varchar(64) not null,"
+  c_ht="$c_ht   name             char(64) not null,"
   c_ht="$c_ht   help_category_id smallint unsigned not null,"
   c_ht="$c_ht   description      text not null,"
   c_ht="$c_ht   example          text not null,"
-  c_ht="$c_ht   url              varchar(128) not null,"
+  c_ht="$c_ht   url              char(128) not null,"
   c_ht="$c_ht   primary key      (help_topic_id),"
   c_ht="$c_ht   unique index     (name)"
   c_ht="$c_ht ) engine=MyISAM"
@@ -292,9 +292,9 @@ then
   
   c_hc="$c_hc CREATE TABLE help_category ("
   c_hc="$c_hc   help_category_id   smallint unsigned not null,"
-  c_hc="$c_hc   name               varchar(64) not null,"
+  c_hc="$c_hc   name               char(64) not null,"
   c_hc="$c_hc   parent_category_id smallint unsigned null,"
-  c_hc="$c_hc   url                varchar(128) not null,"
+  c_hc="$c_hc   url                char(128) not null,"
   c_hc="$c_hc   primary key        (help_category_id),"
   c_hc="$c_hc   unique index       (name)"
   c_hc="$c_hc ) engine=MyISAM"
@@ -310,7 +310,7 @@ then
 
   c_hk="$c_hk CREATE TABLE help_keyword ("
   c_hk="$c_hk   help_keyword_id  int unsigned not null,"
-  c_hk="$c_hk   name             varchar(64) not null,"
+  c_hk="$c_hk   name             char(64) not null,"
   c_hk="$c_hk   primary key      (help_keyword_id),"
   c_hk="$c_hk   unique index     (name)"
   c_hk="$c_hk ) engine=MyISAM"
diff --git a/scripts/mysql_fix_privilege_tables.sh b/scripts/mysql_fix_privilege_tables.sh
index d5c96532782..d080b68b268 100644
--- a/scripts/mysql_fix_privilege_tables.sh
+++ b/scripts/mysql_fix_privilege_tables.sh
@@ -13,7 +13,7 @@ args=""
 port=""
 socket=""
 database="mysql"
-bindir="."
+bindir=""
 pkgdatadir="@pkgdatadir@"
 print_defaults_bindir="."
 
diff --git a/scripts/mysql_fix_privilege_tables.sql b/scripts/mysql_fix_privilege_tables.sql
index 628b034362d..dee4ebd3d2f 100644
--- a/scripts/mysql_fix_privilege_tables.sql
+++ b/scripts/mysql_fix_privilege_tables.sql
@@ -319,19 +319,19 @@ KEY Grantor (Grantor)
 
 CREATE TABLE IF NOT EXISTS help_topic (
 help_topic_id int unsigned not null,
-name varchar(64) not null,
+name char(64) not null,
 help_category_id smallint unsigned not null,
 description text not null,
 example text not null,
-url varchar(128) not null,
+url char(128) not null,
 primary key (help_topic_id), unique index (name)
 ) CHARACTER SET utf8 comment='help topics';
 
 CREATE TABLE IF NOT EXISTS help_category (
 help_category_id smallint unsigned not null,
-name varchar(64) not null,
+name char(64) not null,
 parent_category_id smallint unsigned null,
-url varchar(128) not null,
+url char(128) not null,
 primary key (help_category_id),
 unique index (name)
 ) CHARACTER SET utf8 comment='help categories';
@@ -344,7 +344,7 @@ primary key (help_keyword_id, help_topic_id)
 
 CREATE TABLE IF NOT EXISTS help_keyword (
 help_keyword_id int unsigned not null,
-name varchar(64) not null,
+name char(64) not null,
 primary key (help_keyword_id),
 unique index (name)
 ) CHARACTER SET utf8 comment='help keywords';
@@ -491,3 +491,35 @@ ALTER TABLE proc MODIFY name char(64) DEFAULT '' NOT NULL,
                             'NO_AUTO_CREATE_USER',
                             'HIGH_NOT_PRECEDENCE'
                             ) DEFAULT 0 NOT NULL;
+
+#
+# Change all varchar fields in privilege tables to CHAR, to ensure that
+# we can use the privilege tables in MySQL 4.1
+# Note that for this hack to work, we must change all CHAR() columns at
+# the same time
+#
+
+ALTER TABLE mysql.user
+modify Host char(60) binary DEFAULT '' NOT NULL,
+modify User char(16) binary DEFAULT '' NOT NULL,
+modify Password char(41) binary DEFAULT '' NOT NULL;
+
+ALTER TABLE mysql.db
+modify Host char(60) binary DEFAULT '' NOT NULL,
+modify Db char(64) binary DEFAULT '' NOT NULL,
+modify User char(16) binary DEFAULT '' NOT NULL;
+
+ALTER TABLE mysql.host
+modify Host char(60) binary DEFAULT '' NOT NULL,
+modify Db char(64) binary DEFAULT '' NOT NULL;
+
+ALTER TABLE help_topic
+modify name char(64) not null,
+modify url  char(128) not null;
+
+ALTER TABLE help_category
+modify name char(64) not null,
+modify url char(128) not null;
+
+ALTER TABLE help_keyword
+modify name char(64) not null;