Index: database/database.mysql
===================================================================
RCS file: /cvs/drupal/drupal/database/Attic/database.mysql,v
retrieving revision 1.174.2.2
diff -u -p -r1.174.2.2 database.mysql
--- database/database.mysql	3 May 2005 05:20:07 -0000	1.174.2.2
+++ database/database.mysql	19 Dec 2006 14:11:23 -0000
@@ -163,7 +163,7 @@ CREATE TABLE boxes (
 --
 
 CREATE TABLE cache (
-  cid varchar(255) NOT NULL default '',
+  cid varchar(255) BINARY NOT NULL default '',
   data longtext,
   expire int(11) NOT NULL default '0',
   created int(11) NOT NULL default '0',
Index: database/updates.inc
===================================================================
RCS file: /cvs/drupal/drupal/database/Attic/updates.inc,v
retrieving revision 1.100.2.9
diff -u -p -r1.100.2.9 updates.inc
--- database/updates.inc	2 Dec 2005 21:32:31 -0000	1.100.2.9
+++ database/updates.inc	19 Dec 2006 14:18:11 -0000
@@ -107,7 +107,8 @@ $sql_updates = array(
   "2005-03-21" => "update_128",
   "2005-04-14" => "update_129",
   "2005-05-06" => "update_130",
-  "2005-05-07" => "update_131"
+  "2005-05-07" => "update_131",
+  "2006-12-19" => "update_132",
 );
 
 function update_32() {
@@ -2394,6 +2395,19 @@ function update_131() {
   return $ret;
 }
 
+/**
+ * Cid matching by MySQL should be case-sensitive.
+ */
+function update_132() {
+  $ret = array();
+
+  if ($GLOBALS['db_type'] == 'mysql') {
+    $ret[] = update_sql("ALTER TABLE {cache} CHANGE cid cid varchar(255) BINARY NOT NULL default ''");
+  }
+
+  return $ret;
+}
+
 function update_sql($sql) {
   $edit = $_POST["edit"];
   $result = db_query($sql);