Database name and national characters fixes.

mysql-test/r/ctype_recoding.result

@@ -42,3 +42,17 @@ Field	Type	Null	Key	Default	Extra
 SET CHARACTER SET koi8r;
 DROP TABLE ;
 SET CHARACTER SET default;
+SET CHARACTER SET koi8r;
+CREATE DATABASE ;
+USE ;
+SHOW TABLES;
+Tables_in_
+SHOW TABLES IN ;
+Tables_in_
+SET CHARACTER SET cp1251;
+SHOW TABLES;
+Tables_in_
+SHOW TABLES IN ;
+Tables_in_
+SET CHARACTER SET koi8r;
+DROP DATABASE ;

mysql-test/t/ctype_recoding.test

@@ -27,3 +27,14 @@ SHOW FIELDS FROM таблица;
 SET CHARACTER SET koi8r;
 DROP TABLE ;
 SET CHARACTER SET default;
+
+SET CHARACTER SET koi8r;
+CREATE DATABASE ;
+USE ;
+SHOW TABLES;
+SHOW TABLES IN ;
+SET CHARACTER SET cp1251;
+SHOW TABLES;
+SHOW TABLES IN ;
+SET CHARACTER SET koi8r;
+DROP DATABASE ;

sql/sql_parse.cc

@@ -549,6 +549,7 @@ check_connections(THD *thd)
   char *end, *user, *passwd, *db;
   char prepared_scramble[SCRAMBLE41_LENGTH+4];  /* Buffer for scramble&hash */
   ACL_USER* cached_user=NULL; /* Initialise to NULL for first stage */
+  String convdb;
   DBUG_PRINT("info",("New connection received on %s",
 		     vio_description(net->vio)));
 
@@ -724,7 +725,12 @@ check_connections(THD *thd)
   db=0;
   using_password= test(passwd[0]);
   if (thd->client_capabilities & CLIENT_CONNECT_WITH_DB)
+  {
     db=strend(passwd)+1;
+    convdb.copy(db, strlen(db), 
+		thd->variables.character_set_client, system_charset_info);
+    db= convdb.c_ptr();
+  }
 
   /* We can get only old hash at this point */
   if (using_password && strlen(passwd) != SCRAMBLE_LENGTH)
@@ -1125,10 +1131,15 @@ bool dispatch_command(enum enum_server_command command, THD *thd,
   thd->lex.select_lex.options=0;		// We store status here
   switch (command) {
   case COM_INIT_DB:
-    statistic_increment(com_stat[SQLCOM_CHANGE_DB],&LOCK_status);
-    if (!mysql_change_db(thd,packet))
-      mysql_log.write(thd,command,"%s",thd->db);
-    break;
+    {
+      String convname;
+      statistic_increment(com_stat[SQLCOM_CHANGE_DB],&LOCK_status);
+      convname.copy(packet, strlen(packet),
+		    thd->variables.character_set_client, system_charset_info);
+      if (!mysql_change_db(thd,convname.c_ptr()))
+	mysql_log.write(thd,command,"%s",thd->db);
+      break;
+    }
 #ifndef EMBEDDED_LIBRARY
   case COM_REGISTER_SLAVE:
   {