Merge abotchkov@bk-internal.mysql.com:/home/bk/mysql-4.1

into deer.(none):/home/hf/work/mysql-4.1.2way

BitKeeper/etc/logging_ok

@@ -34,6 +34,7 @@ hf@deer.(none)
 hf@deer.mysql.r18.ru
 hf@genie.(none)
 igor@hundin.mysql.fi
+igor@rurik.mysql.com
 jani@dsl-jkl1657.dial.inet.fi
 jani@dsl-kpogw4gb5.dial.inet.fi
 jani@hynda.(none)
@@ -97,6 +98,7 @@ sasha@mysql.sashanet.com
 serg@build.mysql2.com
 serg@serg.mylan
 serg@serg.mysql.com
+serg@sergbook.mylan
 serg@sergbook.mysql.com
 sinisa@rhols221.adsl.netsonic.fi
 tfr@beta.frontier86.ee

BitKeeper/triggers/post-incoming

-#! /bin/sh
-
-echo "Test: post-incoming works"

BitKeeper/triggers/post-outgoing

-#! /bin/sh
-
-echo "Test: post-outgoing works"

BitKeeper/triggers/pre-commit

+#!/bin/sh
+
+if [ "$REAL_EMAIL" = "" ]
+then
+ echo "Error: you must set REAL_EMAIL in your profile"
+ echo "e.g.: export REAL_EMAIL='Joe Dow <joe@foo.bar>'"
+ echo ""
+ echo "Commit FAILED!"
+ echo "Set REAL_EMAIL and retry."
+ exit 1
+fi
+

INSTALL-WIN-SOURCE

@@ -10,7 +10,7 @@ This is a simple 'HOWTO' document describing how to
 build MySQL binaries for versions 4.1 and above on
 Windows. Instructions are provided for building binaries
 from a standard source distribution or from the BitKeeper
-tree that contains the latest developer source.
+tree that contains the latest development source.
 
 ---------------------------------------------------------
 NOTE
@@ -51,29 +51,15 @@ system:
    - ~45 MB disk space
    - 64 MB RAM
 
-You'll also need a MySQL source distribution.  You can
-get the source for released versions of MySQL from:
-
-http://www.mysql.com/downloads/
-
-Alternatively, you can package a source distribution
-yourself from the latest BitKeeper developer source
-tree. If you plan to do this, you must create the
-package on a Unix system and then transfer it to your
-Windows system.  (The reason for this is that the initial
-configuration scripts and some of the build steps work
-only on Unix.)  The BitKeeper approach thus requires:
-
-   - A system running Unix, or a Unix-like system such as Linux
-   - BitKeeper 3.0 installed on that system (you can obtain
-     BitKeeper from http://www.bitkeeper.com)
+You'll also need a MySQL source distribution, which you
+can obtain as described in section 2.
 
 -------------------------------------------------------
 2. OBTAINING A WINDOWS SOURCE DISTRIBUTION
 -------------------------------------------------------
 
-There are two ways you can get a Windows source distribution for 
-MySQL version 4.1 and above:
+There are two ways you can get a Windows source distribution
+for MySQL version 4.1 and above:
 
  I.  Obtain a MySQL AB-distributed source distribution for the
      particular version of MySQL in which you are interested.
@@ -82,41 +68,54 @@ MySQL version 4.1 and above:
      
      http://www.mysql.com/downloads/
 
- II. Create a source package yourself from the latest development 
-     'BitKeeper' source tree.
+ II. Alternatively, you can package a source distribution
+     yourself from the latest BitKeeper developer source
+     tree. If you plan to do this, you must create the
+     package on a Unix system and then transfer it to your
+     Windows system.  (The reason for this is that some of the
+     configuration and build steps require tools that work only
+     on Unix.)  The BitKeeper approach thus requires:
+
+     - A system running Unix, or a Unix-like system such as Linux
+     - BitKeeper 3.0 installed on that system (you can obtain
+       BitKeeper from http://www.bitkeeper.com)
 
 If you are using the first option, you can skip the  next
-section and go directly to 'BUILDING FROM VC++ WORKSPACE'.
+section and go directly to "BUILDING 'mysql server & clients'
+FROM VC++ WORKSPACE"
 
 -------------------------------------------------------
 3. CREATING A SOURCE PACKAGE FROM THE 'BitKeeper' TREE
 -------------------------------------------------------
 
-To build the latest Windows source package, Please follow the 
-following instructions from any of your '*UNIX*' operating 
-systems (preferably Linux):
+To build the latest Windows source package from the current
+BitKeeper source tree, use the following instructions. Please
+note that this procedure must be performed on a system
+running a Unix or Unix-like operating system.  (The procedure
+is know to work well on Linux, for example.
 
 - Clone the BitKeeper source tree for MySQL (version 4.1
   or above, as desired).  For more information how to clone
-  the BitKeeper source tree, follow the instructions at:
+  the source tree, see the instructions at:
 
   http://www.mysql.com/doc/en/Installing_source_tree.html
 
-- Build the distribution so that you have a server binary to
-  work with.  One way to do this is to run the following
-  command in the top-level directory of your source tree:
+- Configure and build the distribution so that you have a
+  server binary to work with.  One way to do this is to run
+  the following command in the top-level directory of your
+  source tree:
 
   ./BUILD/compile-pentium-max
 
-- After making sure that  build process completed successfully,
+- After making sure that the build process completed successfully,
   run the following utility script from top-level directory
   of your source tree:
 
   ./scripts/make_win_src_distribution
 
-  This script creates the Windows source package.  You can
-  supply different options to the script based on your needs.
-  It accepts: the following options:
+  This script creates a Windows source package, to be used on
+  your Windows system.  You can supply different options to the
+  script based on your needs. It accepts the following options:
 
     --debug   Debug, without creating the package
     --tmp     Specify the temporary location
@@ -128,11 +127,10 @@ systems (preferably Linux):
 
    By default, make_win_src_distribution creates a zipped
    archive with the name mysql-$version-win-src.zip, where
-   $version is the version of the MySQL source tree you
-   cloned.
+   $version represents the version of your MySQL source tree.
  
  - Copy or upload to your Windows machine the Windows source
-   package that you have just created, and compile it using
+   package that you have just created. To compile it, use
    the instructions in the next section.
 
 ---------------------------------------------------------
@@ -148,20 +146,20 @@ Unpack the Windows source zipped archive to a folder and open
 mysql.dsw from your top-level directory.
 
 If you want to build both release and debug versions, then
-select 'build' -> 'buildall' option. To build only 'release'
-or 'debug' versions, then select all appropriate workspaces
-from the 'build' -> 'batch build' option.
+select 'build' -> 'buildall' option. To build only release
+or debug versions, select all appropriate workspaces from
+the 'build' -> 'batch build' option.
 
-The simplest solution to build basic clients and core
+The simplest solution to building the basic clients and core
 server is to set your current active workspace as 'mysqld'
 release or debug version, and just hit 'build' or 'F7', which
-creates necessary client binaries in the 'client_release' or
-'client_debug' directories. The libraries are placed in the
+creates the necessary client binaries in the 'client_release'
+or 'client_debug' directories. The libraries are placed in the
 'lib_release' and 'lib_debug' directories for release and
 debug versions, respectively.
 
 Now you have built the distribution. If you get any compiler
-errors, please cross check and send the compiler output to 
+errors, please cross check and email the compiler output to 
 win32@lists.mysql.com for further assistance.
 
 ---------------------------------------------------------
@@ -173,16 +171,28 @@ TODO from MySQL PIEFU team.
 6. STARTING THE MYSQL SERVER FOR THE FIRST TIME
 ---------------------------------------------------------
 
-First ensure to set or copy my.ini or my.cnf file to your 
-'data' directory that exists in the top-level directory or 
-point to existing 'data' directory.
-
-Now, start your server from the 'client_release' or
-'client_debug' directory (depending on which server you
-want to use), by following the instructions from:
+The server built using the preceding instructions will
+expect that the MySQL base directory and data directory
+are C:\mysql and C:\mysql\data by default. If you want to
+test your server using the source root directory and its
+data directory as the base directory and data directory,
+you will need to tell the server their pathnames. You can
+either do this on the command line with the --basedir
+and --data-dir options, or place appropriate options in
+an option file (C:\my.cnf or the my.ini file in your
+Windows directory). If you have an existing data directory
+elsewhere that you want to use, you can specify its pathname
+instead.
+
+Start your server from the 'client_release' or 'client_debug'
+directory (depending on which server you want to use). The
+general instructions are given here:
 
 http://www.mysql.com/doc/en/Windows_installation.html
 
+You'll have to adapt the instructions appropriately if you
+want to use a different base directory and/or data directory.
+
 That's all!!! See, it's as simple to build MySQL on Windows
 as on any other platform!!!
 
@@ -200,12 +210,12 @@ exists in your 'client_release' or 'client_debug' directory.
 ---------------------------------------------------------
 
 - For production use, MySQL AB does not advise using a MySQL
-  server built by yourself from source. Instead, stick to
-  binaries shipped by MySQL AB.
+  server built by yourself from source. It is preferable to
+  stick to using binaries shipped by MySQL AB.
 
 - If you find something not working as expected, or you have
   suggestions about ways to improve the current build process
-  on Windows, please email to 'win32@lists.mysql.com'.
+  on Windows, please email to win32@lists.mysql.com.
 
 Thanks
 MySQL Team

Makefile.am

@@ -22,7 +22,7 @@ AUTOMAKE_OPTIONS =	foreign
 EXTRA_DIST =		INSTALL-SOURCE README \
 			COPYING COPYING.LIB
 SUBDIRS =		. include @docs_dirs@ \
-			@readline_topdir@ \
+			@readline_topdir@ sql-common \
 			@thread_dirs@ pstack @sql_client_dirs@ \
 			@sql_server_dirs@ scripts man tests \
 			BUILD @netware_dir@ os2 @libmysqld_dirs@ \

configure.in

@@ -2176,8 +2176,8 @@ AC_ARG_WITH(libedit,
     [ with_libedit=undefined ]
     )
 
-compile_readline= no
-compile_libedit= no
+compile_readline="no"
+compile_libedit="no"
 
 if [test "$with_libedit" = "yes"] && [test "$with_readline" = "yes"]
 then
@@ -2820,6 +2820,7 @@ AC_OUTPUT(Makefile extra/Makefile mysys/Makefile isam/Makefile dnl
  libmysql_r/Makefile libmysqld/Makefile libmysqld/examples/Makefile dnl
  libmysql/Makefile client/Makefile dnl
  pstack/Makefile pstack/aout/Makefile sql/Makefile sql/share/Makefile dnl
+ sql-common/Makefile dnl
  merge/Makefile dbug/Makefile scripts/Makefile dnl
  include/Makefile sql-bench/Makefile tools/Makefile dnl
  tests/Makefile Docs/Makefile support-files/Makefile dnl
@@ -2840,6 +2841,7 @@ echo "Remember to check the platform specific part of the reference manual for"
 echo "hints about installing MySQL on your platform. Also have a look at the"
 echo "files in the Docs directory."
 echo
-# The following text is checked in ./Do-compile to se that the configure ends.
+# The following text is checked in ./Do-compile to verify that configure
+# ended sucessfully - don't remove it.
 echo "Thank you for choosing MySQL!"
 echo

include/Makefile.am

@@ -21,7 +21,7 @@ pkginclude_HEADERS =	my_dbug.h m_string.h my_sys.h my_list.h my_xml.h \
 		  	my_semaphore.h my_pthread.h my_no_pthread.h raid.h \
 			errmsg.h my_global.h my_net.h my_alloc.h \
 			my_getopt.h sslopt-longopts.h my_dir.h typelib.h \
-			sslopt-vars.h sslopt-case.h $(BUILT_SOURCES)
+			sslopt-vars.h sslopt-case.h sql_common.h $(BUILT_SOURCES)
 noinst_HEADERS =	config-win.h config-os2.h config-netware.h \
 			nisam.h heap.h merge.h my_bitmap.h\
 			myisam.h myisampack.h myisammrg.h ft_global.h\

include/my_base.h

@@ -123,7 +123,8 @@ enum ha_extra_function {
   HA_EXTRA_NO_IGNORE_DUP_KEY,
   HA_EXTRA_DONT_USE_CURSOR_TO_UPDATE,	/* Cursor will not be used for update */
   HA_EXTRA_PREPARE_FOR_DELETE,
-  HA_EXTRA_PREPARE_FOR_UPDATE		/* Remove read cache if problems */
+  HA_EXTRA_PREPARE_FOR_UPDATE,		/* Remove read cache if problems */
+  HA_EXTRA_PRELOAD_BUFFER_SIZE          /* Set buffer size for preloading */
 };
 
 	/* The following is parameter to ha_panic() */
@@ -256,6 +257,7 @@ enum ha_base_keytype {
 #define HA_ERR_CANNOT_ADD_FOREIGN 150    /* Cannot add a foreign key constr. */
 #define HA_ERR_NO_REFERENCED_ROW 151     /* Cannot add a child row */
 #define HA_ERR_ROW_IS_REFERENCED 152     /* Cannot delete a parent row */
+#define HA_ERR_NON_UNIQUE_BLOCK_SIZE 153 /* Non unique key block size */
 
 	/* Other constants */
 

include/my_sys.h

@@ -643,6 +643,8 @@ extern int init_key_cache(ulong use_mem);
 extern int resize_key_cache(ulong use_mem);
 extern byte *key_cache_read(File file,my_off_t filepos,byte* buff,uint length,
 			    uint block_length,int return_buffer);
+extern int key_cache_insert(File file, my_off_t filepos,
+                            byte *buff, uint length);
 extern int key_cache_write(File file,my_off_t filepos,byte* buff,uint length,
 			   uint block_length,int force_write);
 extern int flush_key_blocks(int file, enum flush_type type);

include/myisam.h

@@ -410,6 +410,7 @@ my_bool mi_test_if_sort_rep(MI_INFO *info, ha_rows rows, ulonglong key_map,
 int mi_init_bulk_insert(MI_INFO *info, ulong cache_size, ha_rows rows);
 void mi_flush_bulk_insert(MI_INFO *info, uint inx);
 void mi_end_bulk_insert(MI_INFO *info);
+int mi_preload(MI_INFO *info, ulonglong key_map, my_bool ignore_leaves);
 
 #ifdef	__cplusplus
 }

libmysql/Makefile.am

@@ -28,6 +28,7 @@ libmysqlclient_la_SOURCES = $(target_sources)
 libmysqlclient_la_LIBADD = $(target_libadd)
 libmysqlclient_la_LDFLAGS = $(target_ldflags)
 EXTRA_DIST = Makefile.shared
+noinst_HEADERS = client_settings.h
 
 # This is called from the toplevel makefile
 link_sources:

myisam/Makefile.am

@@ -47,6 +47,7 @@ libmyisam_a_SOURCES =	mi_open.c mi_extra.c mi_info.c mi_rkey.c \
 			mi_range.c mi_dbug.c mi_checksum.c mi_log.c \
 			mi_changed.c mi_static.c mi_delete_all.c \
 			mi_delete_table.c mi_rename.c  mi_check.c \
+			mi_preload.c \
 			ft_parser.c ft_stopwords.c ft_static.c \
 			ft_update.c ft_boolean_search.c ft_nlq_search.c sort.c \
 			rt_index.c rt_key.c rt_mbr.c rt_split.c sp_key.c

myisam/mi_extra.c

@@ -367,6 +367,9 @@ int mi_extra(MI_INFO *info, enum ha_extra_function function, void *extra_arg)
     if (!share->state.header.uniques)
       info->opt_flag|= OPT_NO_ROWS;
     break;
+  case HA_EXTRA_PRELOAD_BUFFER_SIZE:
+    info->preload_buff_size= *((ulong *) extra_arg); 
+    break;
   case HA_EXTRA_KEY_CACHE:
   case HA_EXTRA_NO_KEY_CACHE:
   default:

myisam/mi_preload.c

+/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
+
+/*
+  Preload indexes into key cache
+*/
+
+#include "myisamdef.h"
+
+
+/*
+  Preload pages of the index file for a table into the key cache
+
+  SYNOPSIS
+    mi_preload()
+      info          open table
+      map           map of indexes to preload into key cache 
+      ignore_leaves only non-leaves pages are to be preloaded
+
+  RETURN VALUE
+    0 if a success. error code - otherwise.
+
+  NOTES.
+    At present pages for all indexes are preloaded.
+    In future only pages for indexes specified in the key_map parameter
+    of the table will be preloaded.
+*/
+
+int mi_preload(MI_INFO *info, ulonglong key_map, my_bool ignore_leaves)
+{
+  uint i;
+  uint length;
+  uint block_length= 0;
+  uchar *buff= NULL;
+  MYISAM_SHARE* share= info->s;
+  uint keys= share->state.header.keys;
+  MI_KEYDEF *keyinfo= share->keyinfo;
+  my_off_t key_file_length= share->state.state.key_file_length;
+  my_off_t pos= share->base.keystart;
+
+  if (!keys || !key_map || key_file_length == pos)
+    return 0;
+
+  block_length= keyinfo[0].block_length;
+
+  if (!key_map)
+    return 0;
+
+  /* Check whether all indexes use the same block size */
+  for (i= 1 ; i < keys ; i++)
+  {
+    if (keyinfo[i].block_length != block_length)
+      return (my_errno= HA_ERR_NON_UNIQUE_BLOCK_SIZE); 
+  }
+
+  length= info->preload_buff_size/block_length * block_length;
+  set_if_bigger(length, block_length);
+
+  if (!(buff= (uchar *) my_malloc(length, MYF(MY_WME))))
+    return (my_errno= HA_ERR_OUT_OF_MEM);
+
+  if (flush_key_blocks(share->kfile, FLUSH_RELEASE))
+    goto err;
+ 
+  do
+  {
+    /* Read the next block of index file into the preload buffer */
+    set_if_smaller(length, key_file_length-pos);
+    if (my_pread(share->kfile, (byte*) buff, length, pos, MYF(MY_FAE)))
+      goto err;
+          
+    if (ignore_leaves)
+    {
+      uchar *end= buff+length;
+      do
+      {
+        if (mi_test_if_nod(buff))
+        {
+          if (key_cache_insert(share->kfile, pos, (byte*) buff, block_length))
+	    goto err;
+	}
+        pos+= block_length;
+      }
+      while ((buff+= block_length) != end);
+      buff= end-length;
+    }
+    else
+    {
+      if (key_cache_insert(share->kfile, pos, (byte*) buff, length))
+	goto err;
+      pos+= length;
+    }
+
+  }
+  while (pos != key_file_length);
+
+  my_free(buff, MYF(0));
+
+  return 0;
+
+err:
+  my_free(buff, MYF(MY_ALLOW_ZERO_PTR));
+  return (my_errno= errno);
+}
+

myisam/myisamdef.h

@@ -262,6 +262,7 @@ struct st_myisam_info {
   int	save_lastinx;
   LIST	open_list;
   IO_CACHE rec_cache;			/* When cacheing records */
+  uint  preload_buff_size;              /* When preloading indexes */
   myf lock_wait;			/* is 0 or MY_DONT_WAIT */
   my_bool was_locked;			/* Was locked in panic */
   my_bool quick_mode;

mysql-test/r/func_str.result

@@ -249,6 +249,24 @@ INSERT INTO t1 VALUES (1, 'a545f661efdd1fb66fdee3aab79945bf');
 SELECT 1 FROM t1 WHERE tmp=AES_DECRYPT(tmp,"password");
 1
 DROP TABLE t1;
+select collation(bin(130)), coercibility(bin(130));
+collation(bin(130))	coercibility(bin(130))
+latin1_swedish_ci	3
+select collation(oct(130)), coercibility(oct(130));
+collation(oct(130))	coercibility(oct(130))
+latin1_swedish_ci	3
+select collation(conv(130,16,10)), coercibility(conv(130,16,10));
+collation(conv(130,16,10))	coercibility(conv(130,16,10))
+latin1_swedish_ci	3
+select collation(hex(130)), coercibility(hex(130));
+collation(hex(130))	coercibility(hex(130))
+latin1_swedish_ci	3
+select collation(char(130)), coercibility(hex(130));
+collation(char(130))	coercibility(hex(130))
+binary	3
+select collation(format(130,10)), coercibility(format(130,10));
+collation(format(130,10))	coercibility(format(130,10))
+latin1_swedish_ci	3
 select collation(lcase(_latin2'a')), coercibility(lcase(_latin2'a'));
 collation(lcase(_latin2'a'))	coercibility(lcase(_latin2'a'))
 latin2_general_ci	3
@@ -267,9 +285,21 @@ latin2_general_ci	3
 select collation(concat(_latin2'a',_latin2'b')), coercibility(concat(_latin2'a',_latin2'b'));
 collation(concat(_latin2'a',_latin2'b'))	coercibility(concat(_latin2'a',_latin2'b'))
 latin2_general_ci	3
+select collation(lpad(_latin2'a',4,_latin2'b')), coercibility(lpad(_latin2'a',4,_latin2'b'));
+collation(lpad(_latin2'a',4,_latin2'b'))	coercibility(lpad(_latin2'a',4,_latin2'b'))
+binary	3
+select collation(rpad(_latin2'a',4,_latin2'b')), coercibility(rpad(_latin2'a',4,_latin2'b'));
+collation(rpad(_latin2'a',4,_latin2'b'))	coercibility(rpad(_latin2'a',4,_latin2'b'))
+latin2_general_ci	3
 select collation(concat_ws(_latin2'a',_latin2'b')), coercibility(concat_ws(_latin2'a',_latin2'b'));
 collation(concat_ws(_latin2'a',_latin2'b'))	coercibility(concat_ws(_latin2'a',_latin2'b'))
 latin2_general_ci	3
+select collation(make_set(255,_latin2'a',_latin2'b',_latin2'c')), coercibility(make_set(255,_latin2'a',_latin2'b',_latin2'c'));
+collation(make_set(255,_latin2'a',_latin2'b',_latin2'c'))	coercibility(make_set(255,_latin2'a',_latin2'b',_latin2'c'))
+latin2_general_ci	3
+select collation(export_set(255,_latin2'y',_latin2'n',_latin2' ')), coercibility(export_set(255,_latin2'y',_latin2'n',_latin2' '));
+collation(export_set(255,_latin2'y',_latin2'n',_latin2' '))	coercibility(export_set(255,_latin2'y',_latin2'n',_latin2' '))
+binary	3
 select collation(trim(_latin2' a ')), coercibility(trim(_latin2' a '));
 collation(trim(_latin2' a '))	coercibility(trim(_latin2' a '))
 latin2_general_ci	3
@@ -306,15 +336,28 @@ latin2_general_ci	3
 select collation(insert(_latin2'abcd',2,3,_latin2'ef')), coercibility(insert(_latin2'abcd',2,3,_latin2'ef'));
 collation(insert(_latin2'abcd',2,3,_latin2'ef'))	coercibility(insert(_latin2'abcd',2,3,_latin2'ef'))
 latin2_general_ci	3
+select collation(replace(_latin2'abcd',_latin2'b',_latin2'B')), coercibility(replace(_latin2'abcd',_latin2'b',_latin2'B'));
+collation(replace(_latin2'abcd',_latin2'b',_latin2'B'))	coercibility(replace(_latin2'abcd',_latin2'b',_latin2'B'))
+latin2_general_ci	3
 create table t1 
 select
+bin(130),
+oct(130),
+conv(130,16,10),
+hex(130),
+char(130),
+format(130,10),
 left(_latin2'a',1),
 right(_latin2'a',1), 
 lcase(_latin2'a'), 
 ucase(_latin2'a'),
 substring(_latin2'a',1,1),
 concat(_latin2'a',_latin2'b'),
+lpad(_latin2'a',4,_latin2'b'),
+rpad(_latin2'a',4,_latin2'b'),
 concat_ws(_latin2'a',_latin2'b'),
+make_set(255,_latin2'a',_latin2'b',_latin2'c'),
+export_set(255,_latin2'y',_latin2'n',_latin2' '),
 trim(_latin2' a '),
 ltrim(_latin2' a '),
 rtrim(_latin2' a '),
@@ -326,18 +369,31 @@ reverse(_latin2'ab'),
 quote(_latin2'ab'),
 soundex(_latin2'ab'),
 substring(_latin2'ab',1),
-insert(_latin2'abcd',2,3,_latin2'ef')
+insert(_latin2'abcd',2,3,_latin2'ef'),
+replace(_latin2'abcd',_latin2'b',_latin2'B')
 ;
+Warnings:
+Warning	1263	Data truncated for column 'format(130,10)' at row 1
 show create table t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
+  `bin(130)` char(64) NOT NULL default '',
+  `oct(130)` char(64) NOT NULL default '',
+  `conv(130,16,10)` char(64) NOT NULL default '',
+  `hex(130)` char(6) NOT NULL default '',
+  `char(130)` char(1) NOT NULL default '',
+  `format(130,10)` char(4) NOT NULL default '',
   `left(_latin2'a',1)` char(1) character set latin2 NOT NULL default '',
   `right(_latin2'a',1)` char(1) character set latin2 NOT NULL default '',
   `lcase(_latin2'a')` char(1) character set latin2 NOT NULL default '',
   `ucase(_latin2'a')` char(1) character set latin2 NOT NULL default '',
   `substring(_latin2'a',1,1)` char(1) character set latin2 NOT NULL default '',
   `concat(_latin2'a',_latin2'b')` char(2) character set latin2 NOT NULL default '',
+  `lpad(_latin2'a',4,_latin2'b')` char(4) character set latin2 NOT NULL default '',
+  `rpad(_latin2'a',4,_latin2'b')` char(4) character set latin2 NOT NULL default '',
   `concat_ws(_latin2'a',_latin2'b')` char(1) character set latin2 NOT NULL default '',
+  `make_set(255,_latin2'a',_latin2'b',_latin2'c')` char(5) character set latin2 NOT NULL default '',
+  `export_set(255,_latin2'y',_latin2'n',_latin2' ')` char(127) character set latin2 NOT NULL default '',
   `trim(_latin2' a ')` char(3) character set latin2 NOT NULL default '',
   `ltrim(_latin2' a ')` char(3) character set latin2 NOT NULL default '',
   `rtrim(_latin2' a ')` char(3) character set latin2 NOT NULL default '',
@@ -349,6 +405,7 @@ t1	CREATE TABLE `t1` (
   `quote(_latin2'ab')` char(6) character set latin2 NOT NULL default '',
   `soundex(_latin2'ab')` char(4) character set latin2 NOT NULL default '',
   `substring(_latin2'ab',1)` char(2) character set latin2 NOT NULL default '',
-  `insert(_latin2'abcd',2,3,_latin2'ef')` char(6) character set latin2 NOT NULL default ''
+  `insert(_latin2'abcd',2,3,_latin2'ef')` char(6) character set latin2 NOT NULL default '',
+  `replace(_latin2'abcd',_latin2'b',_latin2'B')` char(4) character set latin2 NOT NULL default ''
 ) TYPE=MyISAM CHARSET=latin1
 drop table t1;

mysql-test/r/preload.result

+drop table if exists t1, t2;
+create table t1 (
+a int not null auto_increment,
+b char(16) not null,
+primary key (a),
+key (b)
+);
+create table t2(
+a int not null auto_increment,
+b char(16) not null,
+primary key (a),
+key (b)
+);
+insert into t1(b) values 
+('test0'),
+('test1'),
+('test2'),
+('test3'),
+('test4'),
+('test5'),
+('test6'),
+('test7');
+insert into t2(b) select b from t1;
+insert into t1(b) select b from t2;
+insert into t2(b) select b from t1;
+insert into t1(b) select b from t2;
+insert into t2(b) select b from t1;
+insert into t1(b) select b from t2;
+insert into t2(b) select b from t1;
+insert into t1(b) select b from t2;
+insert into t2(b) select b from t1;
+insert into t1(b) select b from t2;
+insert into t2(b) select b from t1;
+insert into t1(b) select b from t2;
+insert into t2(b) select b from t1;
+insert into t1(b) select b from t2;
+insert into t2(b) select b from t1;
+insert into t1(b) select b from t2;
+insert into t2(b) select b from t1;
+insert into t1(b) select b from t2;
+select count(*) from t1;
+count(*)
+33448
+select count(*) from t2;
+count(*)
+20672
+flush tables;
+flush status;
+show status like "key_read%";
+Variable_name	Value
+Key_read_requests	0
+Key_reads	0
+select count(*) from t1 where b = 'test1';
+count(*)
+4181
+show status like "key_read%";
+Variable_name	Value
+Key_read_requests	217
+Key_reads	45
+select count(*) from t1 where b = 'test1';
+count(*)
+4181
+show status like "key_read%";
+Variable_name	Value
+Key_read_requests	434
+Key_reads	45
+flush tables;
+flush status;
+select @@preload_buffer_size;
+@@preload_buffer_size
+32768
+load index into cache t1 keys;
+Table	Op	Msg_type	Msg_text
+test.t1	preload_keys	status	OK
+show status like "key_read%";
+Variable_name	Value
+Key_read_requests	0
+Key_reads	0
+select count(*) from t1 where b = 'test1';
+count(*)
+4181
+show status like "key_read%";
+Variable_name	Value
+Key_read_requests	217
+Key_reads	45
+flush tables;
+flush status;
+show status like "key_read%";
+Variable_name	Value
+Key_read_requests	0
+Key_reads	0
+set session preload_buffer_size=256*1024;
+select @@preload_buffer_size;
+@@preload_buffer_size
+262144
+load index into cache t1 keys ignore leaves;
+Table	Op	Msg_type	Msg_text
+test.t1	preload_keys	status	OK
+show status like "key_read%";
+Variable_name	Value
+Key_read_requests	0
+Key_reads	0
+select count(*) from t1 where b = 'test1';
+count(*)
+4181
+show status like "key_read%";
+Variable_name	Value
+Key_read_requests	217
+Key_reads	45
+flush tables;
+flush status;
+show status like "key_read%";
+Variable_name	Value
+Key_read_requests	0
+Key_reads	0
+set session preload_buffer_size=1*1024;
+select @@preload_buffer_size;
+@@preload_buffer_size
+1024
+load index into cache t1 keys, t2 keys (primary,b) ignore leaves;
+Table	Op	Msg_type	Msg_text
+test.t1	preload_keys	status	OK
+test.t2	preload_keys	status	OK
+show status like "key_read%";
+Variable_name	Value
+Key_read_requests	0
+Key_reads	0
+select count(*) from t1 where b = 'test1';
+count(*)
+4181
+select count(*) from t2 where b = 'test1';
+count(*)
+2584
+show status like "key_read%";
+Variable_name	Value
+Key_read_requests	351
+Key_reads	73
+flush tables;
+flush status;
+show status like "key_read%";
+Variable_name	Value
+Key_read_requests	0
+Key_reads	0
+load index into cache t3 keys, t2 keys (primary,b) ;
+Table	Op	Msg_type	Msg_text
+test.t3	preload_keys	error	Table 'test.t3' doesn't exist
+test.t2	preload_keys	status	OK
+show status like "key_read%";
+Variable_name	Value
+Key_read_requests	0
+Key_reads	0
+flush tables;
+flush status;
+show status like "key_read%";
+Variable_name	Value
+Key_read_requests	0
+Key_reads	0
+load index into cache t3 keys (b), t2 keys (c) ;
+Table	Op	Msg_type	Msg_text
+test.t3	preload_keys	error	Table 'test.t3' doesn't exist
+test.t2	preload_keys	error	Key column 'c' doesn't exist in table
+test.t2	preload_keys	status	Operation failed
+show status like "key_read%";
+Variable_name	Value
+Key_read_requests	0
+Key_reads	0
+drop table t1, t2;

mysql-test/t/func_str.test

@@ -136,13 +136,23 @@ DROP TABLE t1;
 #
 # Test collation and coercibility
 #
+select collation(bin(130)), coercibility(bin(130));
+select collation(oct(130)), coercibility(oct(130));
+select collation(conv(130,16,10)), coercibility(conv(130,16,10));
+select collation(hex(130)), coercibility(hex(130));
+select collation(char(130)), coercibility(hex(130));
+select collation(format(130,10)), coercibility(format(130,10));
 select collation(lcase(_latin2'a')), coercibility(lcase(_latin2'a'));
 select collation(ucase(_latin2'a')), coercibility(ucase(_latin2'a'));
 select collation(left(_latin2'a',1)), coercibility(left(_latin2'a',1));
 select collation(right(_latin2'a',1)), coercibility(right(_latin2'a',1));
 select collation(substring(_latin2'a',1,1)), coercibility(substring(_latin2'a',1,1));
 select collation(concat(_latin2'a',_latin2'b')), coercibility(concat(_latin2'a',_latin2'b'));
+select collation(lpad(_latin2'a',4,_latin2'b')), coercibility(lpad(_latin2'a',4,_latin2'b'));
+select collation(rpad(_latin2'a',4,_latin2'b')), coercibility(rpad(_latin2'a',4,_latin2'b'));
 select collation(concat_ws(_latin2'a',_latin2'b')), coercibility(concat_ws(_latin2'a',_latin2'b'));
+select collation(make_set(255,_latin2'a',_latin2'b',_latin2'c')), coercibility(make_set(255,_latin2'a',_latin2'b',_latin2'c'));
+select collation(export_set(255,_latin2'y',_latin2'n',_latin2' ')), coercibility(export_set(255,_latin2'y',_latin2'n',_latin2' '));
 select collation(trim(_latin2' a ')), coercibility(trim(_latin2' a '));
 select collation(ltrim(_latin2' a ')), coercibility(ltrim(_latin2' a '));
 select collation(rtrim(_latin2' a ')), coercibility(rtrim(_latin2' a '));
@@ -155,16 +165,27 @@ select collation(quote(_latin2'ab')), coercibility(quote(_latin2'ab'));
 select collation(soundex(_latin2'ab')), coercibility(soundex(_latin2'ab'));
 select collation(substring(_latin2'ab',1)), coercibility(substring(_latin2'ab',1));
 select collation(insert(_latin2'abcd',2,3,_latin2'ef')), coercibility(insert(_latin2'abcd',2,3,_latin2'ef'));
+select collation(replace(_latin2'abcd',_latin2'b',_latin2'B')), coercibility(replace(_latin2'abcd',_latin2'b',_latin2'B'));
 
 create table t1 
 select
+  bin(130),
+  oct(130),
+  conv(130,16,10),
+  hex(130),
+  char(130),
+  format(130,10),
   left(_latin2'a',1),
   right(_latin2'a',1), 
   lcase(_latin2'a'), 
   ucase(_latin2'a'),
   substring(_latin2'a',1,1),
   concat(_latin2'a',_latin2'b'),
+  lpad(_latin2'a',4,_latin2'b'),
+  rpad(_latin2'a',4,_latin2'b'),
   concat_ws(_latin2'a',_latin2'b'),
+  make_set(255,_latin2'a',_latin2'b',_latin2'c'),
+  export_set(255,_latin2'y',_latin2'n',_latin2' '),
   trim(_latin2' a '),
   ltrim(_latin2' a '),
   rtrim(_latin2' a '),
@@ -176,8 +197,8 @@ select
   quote(_latin2'ab'),
   soundex(_latin2'ab'),
   substring(_latin2'ab',1),
-  insert(_latin2'abcd',2,3,_latin2'ef')
+  insert(_latin2'abcd',2,3,_latin2'ef'),
+  replace(_latin2'abcd',_latin2'b',_latin2'B')
 ;
-
 show create table t1;
 drop table t1;

mysql-test/t/preload.test

+#
+# Testing of PRELOAD
+#
+
+--disable_warnings
+drop table if exists t1, t2;
+--enable_warnings
+
+
+create table t1 (
+  a int not null auto_increment,
+  b char(16) not null,
+  primary key (a),
+  key (b)
+);
+
+create table t2(
+  a int not null auto_increment,
+  b char(16) not null,
+  primary key (a),
+  key (b)
+);
+
+insert into t1(b) values 
+  ('test0'),
+  ('test1'),
+  ('test2'),
+  ('test3'),
+  ('test4'),
+  ('test5'),
+  ('test6'),
+  ('test7');
+  
+insert into t2(b) select b from t1;
+insert into t1(b) select b from t2;  
+insert into t2(b) select b from t1;  
+insert into t1(b) select b from t2;  
+insert into t2(b) select b from t1;  
+insert into t1(b) select b from t2;  
+insert into t2(b) select b from t1;  
+insert into t1(b) select b from t2;  
+insert into t2(b) select b from t1;  
+insert into t1(b) select b from t2;  
+insert into t2(b) select b from t1;  
+insert into t1(b) select b from t2;  
+insert into t2(b) select b from t1;  
+insert into t1(b) select b from t2;  
+insert into t2(b) select b from t1;  
+insert into t1(b) select b from t2;  
+insert into t2(b) select b from t1;  
+insert into t1(b) select b from t2;  
+
+select count(*) from t1;
+select count(*) from t2;
+
+flush tables; flush status;
+show status like "key_read%";
+
+select count(*) from t1 where b = 'test1';
+show status like "key_read%";
+select count(*) from t1 where b = 'test1';
+show status like "key_read%";
+
+flush tables; flush status;
+select @@preload_buffer_size;
+load index into cache t1 keys;
+show status like "key_read%";
+select count(*) from t1 where b = 'test1';
+show status like "key_read%";
+
+flush tables; flush status;
+show status like "key_read%";
+set session preload_buffer_size=256*1024;
+select @@preload_buffer_size;
+load index into cache t1 keys ignore leaves;
+show status like "key_read%";
+select count(*) from t1 where b = 'test1';
+show status like "key_read%";
+
+flush tables; flush status; 
+show status like "key_read%";
+set session preload_buffer_size=1*1024;
+select @@preload_buffer_size;
+load index into cache t1 keys, t2 keys (primary,b) ignore leaves;
+show status like "key_read%";
+select count(*) from t1 where b = 'test1';
+select count(*) from t2 where b = 'test1';
+show status like "key_read%";
+
+flush tables; flush status;
+show status like "key_read%";
+load index into cache t3 keys, t2 keys (primary,b) ;
+show status like "key_read%";
+
+flush tables; flush status;
+show status like "key_read%";
+load index into cache t3 keys (b), t2 keys (c) ;
+show status like "key_read%";
+
+drop table t1, t2;

mysys/mf_keycache.c

@@ -826,7 +826,7 @@ static HASH_LINK *get_hash_link(int file, my_off_t filepos)
             (uint) hash_link->file,(ulong) hash_link->diskpos));
       }
     }
-    KEYCACHE_DBUG_ASSERT(n <= my_hash_links_used);
+    KEYCACHE_DBUG_ASSERT(cnt <= my_hash_links_used);
 #endif
   }
   if (! hash_link)
@@ -1063,6 +1063,9 @@ static BLOCK_LINK *find_key_block(int file, my_off_t filepos,
 
   KEYCACHE_DBUG_ASSERT(page_status != -1);
   *page_st=page_status;
+  KEYCACHE_DBUG_PRINT("find_key_block",
+                      ("file %u, filepos %lu, page_status %lu",
+                      (uint) file,(ulong) filepos,(uint) page_status));
 
 #if !defined(DBUG_OFF) && defined(EXTRA_DEBUG)
   DBUG_EXECUTE("check_keycache2",test_key_cache("end of find_key_block",0););
@@ -1181,7 +1184,7 @@ byte *key_cache_read(File file, my_off_t filepos, byte *buff, uint length,
       keycache_pthread_mutex_lock(&THR_LOCK_keycache);
       my_cache_r_requests++;
       block=find_key_block(file,filepos,0,&page_st);
-      if (page_st != PAGE_READ)
+      if (block->status != BLOCK_ERROR && page_st != PAGE_READ)
       {
         /* The requested page is to be read into the block buffer */
         read_block(block,key_cache_block_size,read_length+offset,
@@ -1255,6 +1258,86 @@ byte *key_cache_read(File file, my_off_t filepos, byte *buff, uint length,
 }
 
 
+/*
+  Insert a block of file data from a buffer into key cache
+
+  SYNOPSIS
+    key_cache_insert()
+      file      file descriptor
+      filepos   file offset of the data from the buffer 
+      buff      buffer with data to insert into key cache
+      length    length of the data in the buffer
+
+  RETURN VALUE
+    0 if a success, 1 -otherwise.
+*/
+
+int key_cache_insert(File file, my_off_t filepos, byte *buff, uint length)
+{
+  DBUG_ENTER("key_cache_insert");
+  DBUG_PRINT("enter", ("file %u, filepos %lu, length %u",
+               (uint) file,(ulong) filepos, length));
+
+  if (my_disk_blocks > 0)
+  {
+    /* Key cache is used */
+    reg1 BLOCK_LINK *block;
+    uint offset= (uint) (filepos & (key_cache_block_size-1));
+    uint read_length;
+    int page_st;
+
+    /* Read data into key cache from buff in key_cache_block_size increments */
+    filepos-= offset;
+    do
+    {
+      read_length= length > key_cache_block_size ?
+                   key_cache_block_size : length;
+      KEYCACHE_DBUG_ASSERT(read_length > 0);
+      keycache_pthread_mutex_lock(&THR_LOCK_keycache);
+      my_cache_r_requests++;
+      block=find_key_block(file, filepos, 0, &page_st);
+      if (block->status != BLOCK_ERROR && page_st != PAGE_READ)
+      {
+        /* The requested page is to be read into the block buffer */
+#if !defined(SERIALIZED_READ_FROM_CACHE)
+        keycache_pthread_mutex_unlock(&THR_LOCK_keycache);
+#endif
+
+        /* Copy data from buff */
+        if (!(read_length & 511))
+          bmove512(block->buffer+offset, buff, read_length);
+        else
+          memcpy(block->buffer+offset, buff, (size_t) read_length);
+
+#if !defined(SERIALIZED_READ_FROM_CACHE)
+        keycache_pthread_mutex_lock(&THR_LOCK_keycache);
+#endif
+        block->status= BLOCK_READ;
+        block->length= read_length+offset;
+      }
+
+      remove_reader(block);
+      /*
+         Link the block into the LRU chain
+         if it's the last submitted request for the block
+      */
+      unreg_request(block,1);
+
+      keycache_pthread_mutex_unlock(&THR_LOCK_keycache);
+
+      if (block->status & BLOCK_ERROR)
+        DBUG_RETURN(1);
+
+      buff+=read_length;
+      filepos+=read_length;
+      offset=0;
+
+    } while ((length-= read_length));
+  }
+  DBUG_RETURN(0);
+}
+
+
 /*
   Write a buffer into disk;
   filepos must be a multiple of 'block_length', but it doesn't
@@ -1303,7 +1386,7 @@ int key_cache_write(File file, my_off_t filepos, byte *buff, uint length,
       keycache_pthread_mutex_lock(&THR_LOCK_keycache);
       my_cache_w_requests++;
       block=find_key_block(file, filepos, 1, &page_st);
-      if (page_st != PAGE_READ &&
+      if (block->status != BLOCK_ERROR && page_st != PAGE_READ &&
           (offset || read_length < key_cache_block_size))
         read_block(block,
                    offset + read_length >= key_cache_block_size?

scripts/mysql_fix_privilege_tables.sql

@@ -4,7 +4,7 @@ ALTER TABLE host type=MyISAM;
 ALTER TABLE func type=MyISAM;
 ALTER TABLE columns_priv type=MyISAM;
 ALTER TABLE tables_priv type=MyISAM;
-ALTER TABLE user change password password char(45) not null;
+ALTER TABLE user change Password Password char(45) not null;
 ALTER TABLE user add File_priv enum('N','Y') NOT NULL;
 CREATE TABLE IF NOT EXISTS func (
   name char(64) DEFAULT '' NOT NULL,

sql-common/Makefile.am

+# Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+## Process this file with automake to create Makefile.in
+EXTRA_DIST = client.c pack.c
+
+# Don't update the files from bitkeeper
+%::SCCS/s.%

sql/ha_myisam.cc

@@ -688,6 +688,72 @@ int ha_myisam::repair(THD *thd, MI_CHECK &param, bool optimize)
 }
 
 
+/*
+  Preload pages of the index file for a table into the key cache.
+*/
+
+int ha_myisam::preload_keys(THD* thd, HA_CHECK_OPT *check_opt)
+{
+  int error;
+  const char *errmsg;
+  ulonglong map= ~(ulonglong) 0;
+  TABLE_LIST *table_list= table->pos_in_table_list;
+  my_bool ignore_leaves= table_list->ignore_leaves;
+
+  DBUG_ENTER("ha_myisam::preload_keys");
+
+  /* Check validity of the index references */ 
+  if (table_list->use_index)
+  {
+    key_map kmap= get_key_map_from_key_list(table, table_list->use_index);
+    if (kmap == ~(key_map) 0)
+    {
+      errmsg= thd->net.last_error;
+      error= HA_ADMIN_FAILED;
+      goto err;
+    }
+    if (kmap)
+      map= kmap;
+  }
+  
+  mi_extra(file, HA_EXTRA_PRELOAD_BUFFER_SIZE,
+           (void *) &thd->variables.preload_buff_size);
+
+  if ((error= mi_preload(file, map, ignore_leaves)))
+  {
+    switch (error) {
+    case HA_ERR_NON_UNIQUE_BLOCK_SIZE:
+      errmsg= "Indexes use different block sizes";
+      break;
+    case HA_ERR_OUT_OF_MEM:
+      errmsg= "Failed to allocate buffer";
+      break;
+    default: 
+      char buf[ERRMSGSIZE+20];
+      my_snprintf(buf, ERRMSGSIZE, 
+                  "Failed to read from index file (errno: %d)", my_errno);
+      errmsg= buf;
+    }
+    error= HA_ADMIN_FAILED;
+    goto err;
+  }
+  
+  DBUG_RETURN(HA_ADMIN_OK);
+
+ err:
+  {
+    MI_CHECK param;
+    myisamchk_init(&param);
+    param.thd= thd;
+    param.op_name= (char*)"preload_keys";
+    param.db_name= table->table_cache_key;
+    param.table_name= table->table_name;
+    param.testflag= 0;
+    mi_check_print_error(&param, errmsg);
+    DBUG_RETURN(error);
+  }
+}
+
 /*
   Deactive all not unique index that can be recreated fast
 

sql/ha_myisam.h

@@ -127,6 +127,7 @@ class ha_myisam: public handler
   int optimize(THD* thd, HA_CHECK_OPT* check_opt);
   int restore(THD* thd, HA_CHECK_OPT* check_opt);
   int backup(THD* thd, HA_CHECK_OPT* check_opt);
+  int preload_keys(THD* thd, HA_CHECK_OPT* check_opt);
 #ifdef HAVE_REPLICATION
   int dump(THD* thd, int fd);
   int net_read_dump(NET* net);

sql/handler.cc

@@ -620,6 +620,11 @@ int handler::analyze(THD* thd, HA_CHECK_OPT* check_opt)
   return HA_ADMIN_NOT_IMPLEMENTED;
 }
 
+int handler::preload_keys(THD* thd, HA_CHECK_OPT* check_opt)
+{
+  return HA_ADMIN_NOT_IMPLEMENTED;
+}
+
 /*
   Read first row (only) from a table
   This is never called for InnoDB or BDB tables, as these table types

sql/handler.h

@@ -305,6 +305,7 @@ class handler :public Sql_alloc
   virtual int optimize(THD* thd,HA_CHECK_OPT* check_opt);
   virtual int analyze(THD* thd, HA_CHECK_OPT* check_opt);
   virtual int backup(THD* thd, HA_CHECK_OPT* check_opt);
+  virtual int preload_keys(THD* thd, HA_CHECK_OPT* check_opt);
   /*
     restore assumes .frm file must exist, and that generate_table() has been
     called; It will just copy the data file and run repair.

sql/item.cc

@@ -39,7 +39,7 @@ Item::Item():
 {
   marker= 0;
   maybe_null=null_value=with_sum_func=unsigned_flag=0;
-  coercibility=COER_IMPLICIT;
+  coercibility=COER_COERCIBLE;
   name= 0;
   decimals= 0; max_length= 0;
   THD *thd= current_thd;

sql/item_strfunc.cc

@@ -813,6 +813,7 @@ String *Item_func_replace::val_str(String *str)
 
 void Item_func_replace::fix_length_and_dec()
 {
+  uint i;
   max_length=args[0]->max_length;
   int diff=(int) (args[2]->max_length - args[1]->max_length);
   if (diff > 0 && args[1]->max_length)
@@ -825,6 +826,20 @@ void Item_func_replace::fix_length_and_dec()
     max_length=MAX_BLOB_WIDTH;
     maybe_null=1;
   }
+  set_charset(args[0]->charset(), args[0]->coercibility);
+  
+  for (i=1; i<3; i++)
+  {
+    if (set_charset(charset(), coercibility,
+        args[i]->charset(), args[i]->coercibility))
+    {
+      my_error(ER_CANT_AGGREGATE_COLLATIONS,MYF(0),
+	       charset()->name,coercion_name(coercibility),
+	       args[i]->charset()->name,coercion_name(args[i]->coercibility),
+	       func_name());
+      break;
+    }
+  }
 }
 
 
@@ -1765,8 +1780,20 @@ void Item_func_make_set::split_sum_func(Item **ref_pointer_array,
 void Item_func_make_set::fix_length_and_dec()
 {
   max_length=arg_count-1;
-  for (uint i=1 ; i < arg_count ; i++)
+  set_charset(args[0]->charset(), args[0]->coercibility);
+  for (uint i=0 ; i < arg_count ; i++)
+  {
     max_length+=args[i]->max_length;
+    if (set_charset(charset(), coercibility,
+		    args[i]->charset(), args[i]->coercibility))
+    {
+      my_error(ER_CANT_AGGREGATE_COLLATIONS,MYF(0),
+	     charset()->name,coercion_name(coercibility),
+	     args[i]->charset()->name,coercion_name(args[i]->coercibility),
+	     func_name());
+      break;
+    }
+ }
   used_tables_cache|=item->used_tables();
   const_item_cache&=item->const_item();
   with_sum_func= with_sum_func || item->with_sum_func;
@@ -1949,6 +1976,15 @@ String *Item_func_repeat::val_str(String *str)
 
 void Item_func_rpad::fix_length_and_dec()
 {
+  if (set_charset(args[0]->charset(), args[0]->coercibility,
+ 		  args[2]->charset(), args[2]->coercibility))
+  {
+    my_error(ER_CANT_AGGREGATE_COLLATIONS,MYF(0),
+	     args[0]->charset()->name,coercion_name(args[0]->coercibility),
+	     args[2]->charset()->name,coercion_name(args[2]->coercibility),
+	     func_name());
+  }
+  
   if (args[1]->const_item())
   {
     uint32 length= (uint32) args[1]->val_int();
@@ -2009,6 +2045,15 @@ String *Item_func_rpad::val_str(String *str)
 
 void Item_func_lpad::fix_length_and_dec()
 {
+  if (set_charset(args[0]->charset(), args[0]->coercibility,
+ 		  args[2]->charset(), args[2]->coercibility))
+  {
+    my_error(ER_CANT_AGGREGATE_COLLATIONS,MYF(0),
+	     args[0]->charset()->name,coercion_name(args[0]->coercibility),
+	     args[2]->charset()->name,coercion_name(args[2]->coercibility),
+	     func_name());
+  }
+  
   if (args[1]->const_item())
   {
     uint32 length= (uint32) args[1]->val_int();
@@ -2418,9 +2463,24 @@ String* Item_func_export_set::val_str(String* str)
 
 void Item_func_export_set::fix_length_and_dec()
 {
+  uint i;
   uint length=max(args[1]->max_length,args[2]->max_length);
   uint sep_length=(arg_count > 3 ? args[3]->max_length : 1);
   max_length=length*64+sep_length*63;
+
+  set_charset(args[1]->charset(), args[1]->coercibility);
+  for (i=2 ; i < 4 && i < arg_count ; i++)
+  {
+    if (set_charset(charset(), coercibility,
+		    args[i]->charset(), args[i]->coercibility))
+    {
+      my_error(ER_CANT_AGGREGATE_COLLATIONS,MYF(0),
+	       charset()->name,coercion_name(coercibility),
+	       args[i]->charset()->name,coercion_name(args[i]->coercibility),
+	       func_name());
+      break;
+    }
+  }
 }
 
 String* Item_func_inet_ntoa::val_str(String* str)
@@ -2557,7 +2617,7 @@ String *Item_func_quote::val_str(String *str)
 }
 
 #ifdef HAVE_COMPRESS
-#include "../zlib/zlib.h"
+#include "zlib.h"
 
 String *Item_func_compress::val_str(String *str)
 {

sql/item_strfunc.h

@@ -433,6 +433,7 @@ class Item_func_format :public Item_str_func
   String *val_str(String *);
   void fix_length_and_dec()
   {
+    set_charset(default_charset());
     max_length=args[0]->max_length+(args[0]->max_length-args[0]->decimals)/3;
   }
   const char *func_name() const { return "format"; }
@@ -444,7 +445,11 @@ class Item_func_char :public Item_str_func
 public:
   Item_func_char(List<Item> &list) :Item_str_func(list) {}
   String *val_str(String *);
-  void fix_length_and_dec() { maybe_null=0; max_length=arg_count; }
+  void fix_length_and_dec() 
+  { 
+    set_charset(default_charset());
+    maybe_null=0; max_length=arg_count;
+  }
   const char *func_name() const { return "char"; }
 };
 
@@ -490,7 +495,11 @@ class Item_func_conv :public Item_str_func
   Item_func_conv(Item *a,Item *b,Item *c) :Item_str_func(a,b,c) {}
   const char *func_name() const { return "conv"; }
   String *val_str(String *);
-  void fix_length_and_dec() { decimals=0; max_length=64; }
+  void fix_length_and_dec() 
+  { 
+    set_charset(default_charset());
+    decimals=0; max_length=64; 
+  }
 };
 
 
@@ -501,7 +510,11 @@ class Item_func_hex :public Item_str_func
   Item_func_hex(Item *a) :Item_str_func(a) {}
   const char *func_name() const { return "hex"; }
   String *val_str(String *);
-  void fix_length_and_dec() { decimals=0; max_length=args[0]->max_length*2; }
+  void fix_length_and_dec() 
+  { 
+    set_charset(default_charset());
+    decimals=0; max_length=args[0]->max_length*2;
+  }
 };
 
 

sql/lex.h

@@ -221,6 +221,7 @@ static SYMBOL symbols[] = {
   { "KILL",		SYM(KILL_SYM),0,0},
   { "LAST",		SYM(LAST_SYM),0,0},
   { "LEADING",		SYM(LEADING),0,0},
+  { "LEAVES",		SYM(LEAVES),0,0},
   { "LEFT",		SYM(LEFT),0,0},
   { "LEVEL",		SYM(LEVEL_SYM),0,0},
   { "LIKE",		SYM(LIKE),0,0},

sql/mysql_priv.h

@@ -250,6 +250,7 @@ void debug_sync_point(const char* lock_name, uint lock_timeout);
 /* Options to add_table_to_list() */
 #define TL_OPTION_UPDATING	1
 #define TL_OPTION_FORCE_INDEX	2
+#define TL_OPTION_IGNORE_LEAVES 4
 
 /* Some portable defines */
 
@@ -402,6 +403,8 @@ int mysql_analyze_table(THD* thd, TABLE_LIST* table_list,
 			HA_CHECK_OPT* check_opt);
 int mysql_optimize_table(THD* thd, TABLE_LIST* table_list,
 			 HA_CHECK_OPT* check_opt);
+int mysql_preload_keys(THD* thd, TABLE_LIST* table_list);
+
 bool check_simple_select();
 
 SORT_FIELD * make_unireg_sortorder(ORDER *order, uint *length);
@@ -593,6 +596,8 @@ enum find_item_error_report_type {REPORT_ALL_ERRORS, REPORT_EXCEPT_NOT_FOUND,
 extern const Item **not_found_item;
 Item ** find_item_in_list(Item *item, List<Item> &items, uint *counter,
 			  find_item_error_report_type report_error);
+key_map get_key_map_from_key_list(TABLE *table, 
+				  List<String> *index_list);
 bool insert_fields(THD *thd,TABLE_LIST *tables,
 		   const char *db_name, const char *table_name,
 		   List_iterator<Item> *it);

sql/mysqld.cc

@@ -3426,6 +3426,7 @@ enum options
   OPT_NET_BUFFER_LENGTH, OPT_NET_RETRY_COUNT,
   OPT_NET_READ_TIMEOUT, OPT_NET_WRITE_TIMEOUT,
   OPT_OPEN_FILES_LIMIT,
+  OPT_PRELOAD_BUFFER_SIZE,
   OPT_QUERY_CACHE_LIMIT, OPT_QUERY_CACHE_MIN_RES_UNIT, OPT_QUERY_CACHE_SIZE,
   OPT_QUERY_CACHE_TYPE, OPT_RECORD_BUFFER,
   OPT_RECORD_RND_BUFFER, OPT_RELAY_LOG_SPACE_LIMIT, OPT_RELAY_LOG_PURGE,
@@ -4234,6 +4235,11 @@ replicating a LOAD DATA INFILE command.",
    "If this is not 0, then mysqld will use this value to reserve file descriptors to use with setrlimit(). If this value is 0 then mysqld will reserve max_connections*5 or max_connections + table_cache*2 (whichever is larger) number of files.",
    (gptr*) &open_files_limit, (gptr*) &open_files_limit, 0, GET_ULONG,
    REQUIRED_ARG, 0, 0, 65535, 0, 1, 0},
+   {"preload_buffer_size", OPT_PRELOAD_BUFFER_SIZE,
+    "The size of the buffer that is allocated when preloading indexes",
+    (gptr*) &global_system_variables.preload_buff_size,
+    (gptr*) &max_system_variables.preload_buff_size, 0, GET_ULONG,
+    REQUIRED_ARG, 32*1024L, 1024, 1024*1024*1024L, 0, 1, 0},
 #ifdef HAVE_QUERY_CACHE
   {"query_cache_limit", OPT_QUERY_CACHE_LIMIT,
    "Don't cache results that are bigger than this.",

sql/set_var.cc

@@ -210,6 +210,8 @@ sys_var_thd_ulong	sys_net_retry_count("net_retry_count",
 					    &SV::net_retry_count,
 					    fix_net_retry_count);
 sys_var_thd_bool	sys_new_mode("new", &SV::new_mode);
+sys_var_thd_ulong       sys_preload_buff_size("preload_buffer_size",
+                                              &SV::preload_buff_size);
 sys_var_thd_ulong	sys_read_buff_size("read_buffer_size",
 					   &SV::read_buff_size);
 sys_var_bool_ptr	sys_readonly("read_only", &opt_readonly);
@@ -423,6 +425,7 @@ sys_var *sys_variables[]=
   &sys_net_wait_timeout,
   &sys_net_write_timeout,
   &sys_new_mode,
+  &sys_preload_buff_size,
   &sys_pseudo_thread_id,
   &sys_query_cache_size,
 #ifdef HAVE_QUERY_CACHE
@@ -602,6 +605,7 @@ struct show_var_st init_vars[]= {
   {"log_error",               (char*) log_error_file,               SHOW_CHAR},
   {"port",                    (char*) &mysqld_port,                  SHOW_INT},
   {"protocol_version",        (char*) &protocol_version,            SHOW_INT},
+  {sys_preload_buff_size.name, (char*) &sys_preload_buff_size,      SHOW_SYS},
   {sys_pseudo_thread_id.name, (char*) &sys_pseudo_thread_id,        SHOW_SYS},
   {sys_read_buff_size.name,   (char*) &sys_read_buff_size,	    SHOW_SYS},
   {sys_readonly.name,         (char*) &sys_readonly,                SHOW_SYS},

sql/sql_base.cc

@@ -35,8 +35,6 @@ static int open_unireg_entry(THD *thd,TABLE *entry,const char *db,
 			     const char *name, const char *alias);
 static void free_cache_entry(TABLE *entry);
 static void mysql_rm_tmp_tables(void);
-static key_map get_key_map_from_key_list(TABLE *table,
-					 List<String> *index_list);
 
 
 extern "C" byte *table_cache_key(const byte *record,uint *length,
@@ -2066,7 +2064,7 @@ bool setup_tables(TABLE_LIST *tables)
 }
 
 
-static key_map get_key_map_from_key_list(TABLE *table, 
+key_map get_key_map_from_key_list(TABLE *table, 
 				  List<String> *index_list)
 {
   key_map map=0;

sql/sql_class.h

@@ -366,6 +366,7 @@ struct system_variables
   ulong net_retry_count;
   ulong net_wait_timeout;
   ulong net_write_timeout;
+  ulong preload_buff_size;
   ulong query_cache_type;
   ulong read_buff_size;
   ulong read_rnd_buff_size;

sql/sql_lex.h

@@ -59,7 +59,7 @@ enum enum_sql_command {
   SQLCOM_CHANGE_DB, SQLCOM_CREATE_DB, SQLCOM_DROP_DB, SQLCOM_ALTER_DB,
   SQLCOM_REPAIR, SQLCOM_REPLACE, SQLCOM_REPLACE_SELECT,
   SQLCOM_CREATE_FUNCTION, SQLCOM_DROP_FUNCTION,
-  SQLCOM_REVOKE,SQLCOM_OPTIMIZE, SQLCOM_CHECK,
+  SQLCOM_REVOKE,SQLCOM_OPTIMIZE, SQLCOM_CHECK, SQLCOM_PRELOAD_KEYS,
   SQLCOM_FLUSH, SQLCOM_KILL,  SQLCOM_ANALYZE,
   SQLCOM_ROLLBACK, SQLCOM_COMMIT, SQLCOM_SLAVE_START, SQLCOM_SLAVE_STOP,
   SQLCOM_BEGIN, SQLCOM_LOAD_MASTER_TABLE, SQLCOM_CHANGE_MASTER,

sql/sql_parse.cc

@@ -1881,6 +1881,15 @@ mysql_execute_command(THD *thd)
     res = mysql_restore_table(thd, tables);
     break;
   }
+  case SQLCOM_PRELOAD_KEYS:
+  {
+    if (check_db_used(thd, tables) ||
+        check_access(thd, INDEX_ACL, tables->db, &tables->grant.privilege))
+      goto error; 
+    res = mysql_preload_keys(thd, tables);
+    break;
+  }
+      
 
 #ifndef EMBEDDED_LIBRARY
   case SQLCOM_CHANGE_MASTER:
@@ -4107,6 +4116,7 @@ TABLE_LIST *st_select_lex::add_table_to_list(THD *thd,
   ptr->lock_type=   lock_type;
   ptr->updating=    test(table_options & TL_OPTION_UPDATING);
   ptr->force_index= test(table_options & TL_OPTION_FORCE_INDEX);
+  ptr->ignore_leaves= test(table_options & TL_OPTION_IGNORE_LEAVES);
   ptr->derived=	    table->sel;
   if (use_index)
     ptr->use_index=(List<String> *) thd->memdup((gptr) use_index,

sql/sql_table.cc

@@ -1404,6 +1404,7 @@ static int mysql_admin_table(THD* thd, TABLE_LIST* tables,
 	goto err;
       continue;
     }
+    table->table->pos_in_table_list= table;
     if ((table->table->db_stat & HA_READ_ONLY) && open_for_modify)
     {
       char buff[FN_REFLEN + MYSQL_ERRMSG_SIZE];
@@ -1559,6 +1560,28 @@ int mysql_optimize_table(THD* thd, TABLE_LIST* tables, HA_CHECK_OPT* check_opt)
 }
 
 
+/*
+  Preload specified indexes for a table into key cache
+
+  SYNOPSIS
+    mysql_preload_keys()
+    thd	        Thread object
+    tables      Table list (one table only)
+
+  RETURN VALUES
+    0	  ok
+   -1	  error
+*/
+
+int mysql_preload_keys(THD* thd, TABLE_LIST* tables)
+{
+  DBUG_ENTER("mysql_preload_keys");
+  DBUG_RETURN(mysql_admin_table(thd, tables, 0,
+				"preload_keys", TL_READ, 0, 0, 0,
+				&handler::preload_keys));
+}
+
+
 /*
   Create a table identical to the specified table
 

sql/sql_yacc.yy

@@ -256,6 +256,7 @@ bool my_yyoverflow(short **a, YYSTYPE **b,int *yystacksize);
 %token	KEY_SYM
 %token	LEADING
 %token	LEAST_SYM
+%token	LEAVES
 %token	LEVEL_SYM
 %token	LEX_HOSTNAME
 %token	LIKE
@@ -579,7 +580,7 @@ bool my_yyoverflow(short **a, YYSTYPE **b,int *yystacksize);
 	type int_type real_type order_dir opt_field_spec lock_option
 	udf_type if_exists opt_local opt_table_options table_options
 	table_option opt_if_not_exists opt_no_write_to_binlog opt_var_type opt_var_ident_type
-	delete_option opt_temporary all_or_any opt_distinct
+	delete_option opt_temporary all_or_any opt_distinct opt_ignore_leaves
 
 %type <ulong_num>
 	ULONG_NUM raid_types merge_insert_types
@@ -656,10 +657,11 @@ bool my_yyoverflow(short **a, YYSTYPE **b,int *yystacksize);
 %type <NONE>
 	query verb_clause create change select do drop insert replace insert2
 	insert_values update delete truncate rename
-	show describe load alter optimize flush
+	show describe load alter optimize preload flush
 	reset purge begin commit rollback slave master_def master_defs
 	repair restore backup analyze check start
 	field_list field_list_item field_spec kill column_def key_def
+	preload_list preload_keys
 	select_item_list select_item values_list no_braces
 	opt_limit_clause delete_limit_clause fields opt_values values
 	procedure_list procedure_list2 procedure_item
@@ -728,6 +730,7 @@ verb_clause:
 	| lock
 	| kill
 	| optimize
+	| preload
 	| purge
 	| rename
         | repair
@@ -1835,6 +1838,55 @@ table_to_table:
 	    YYABORT;
 	};
 
+preload:
+	LOAD INDEX INTO CACHE_SYM
+	{
+	  LEX *lex=Lex;
+	  lex->sql_command=SQLCOM_PRELOAD_KEYS;
+	}
+	preload_list
+	{}
+	;
+
+preload_list:
+	preload_keys
+	| preload_list ',' preload_keys;
+
+preload_keys:
+	table_ident preload_keys_spec opt_ignore_leaves
+	{
+	  LEX *lex=Lex;
+	  SELECT_LEX *sel= &lex->select_lex;
+	  if (!sel->add_table_to_list(lex->thd, $1, NULL, $3, 
+                                      TL_READ, 
+                                      sel->get_use_index(),
+                                      (List<String> *)0))
+            YYABORT;
+	}
+	;
+
+preload_keys_spec:
+	keys_or_index { Select->select_lex()->interval_list.empty(); }
+	preload_key_list_or_empty 
+	{
+	  LEX *lex=Lex;
+	  SELECT_LEX *sel= &lex->select_lex;
+	  sel->use_index= sel->interval_list;
+	  sel->use_index_ptr= &sel->use_index;
+	}          
+	;
+
+preload_key_list_or_empty:
+	/* empty */
+	| '(' key_usage_list2 ')' {}
+	;
+
+opt_ignore_leaves:
+	/* empty */
+	{ $$= 0; }
+	| IGNORE_SYM LEAVES { $$= TL_OPTION_IGNORE_LEAVES; }
+	;
+
 /*
   Select : retrieve data from table
 */
@@ -4279,6 +4331,7 @@ keyword:
 	| INSERT_METHOD		{}
 	| RELAY_THREAD		{}
 	| LAST_SYM		{}
+	| LEAVES                {}
 	| LEVEL_SYM		{}
 	| LINESTRING		{}
 	| LOCAL_SYM		{}

sql/table.h

@@ -181,6 +181,7 @@ typedef struct st_table_list
   bool		straight;		/* optimize with prev table */
   bool          updating;               /* for replicate-do/ignore table */
   bool		force_index;		/* Prefer index over table scan */
+  bool          ignore_leaves;          /* Preload only non-leaf nodes */
 } TABLE_LIST;
 
 typedef struct st_changed_table_list