Merge paul@work.mysql.com:/home/bk/mysql-4.0

@item

Our German, Austrian and Swiss users will note that we have a new character

set latin_de which corrects the @emph{German sorting order}, placing German

Umlauts in the same order as German telephone books.

set @code{latin_de} which corrects the @emph{German sorting order},

placing German Umlauts in the same order as German telephone books.

@item

Features to simplify migration from other database systems to MySQL

The option to compress read-only tables, but still have direct access to

the rows in the table, gives you better performance by minimising disk

reads.  This is very useful when you are archiving things.

@xref{myisampack}.

@xref{myisampack, , @code{myisampack}}.

@item

MySQL Server has internal support for full-text search. @xref{Fulltext Search}.

@file{SHAREDIR/charsets/Index}.  @xref{configure options}.

If you change the character set when running MySQL (which may

also change the sort order), you must run myisamchk -r -q on all

also change the sort order), you must run @code{myisamchk -r -q} on all

tables. Otherwise your indexes may not be ordered correctly.

When a client connects to a MySQL server, the server sends the

and the data is stored in a file with the @file{.MYD} (MYData) extension.

You can check/repair @code{MyISAM} tables with the @code{myisamchk}

utility. @xref{Crash recovery}. You can compress @code{MyISAM} tables with

@code{myisampack} to take up much less space. @xref{myisampack}.

@code{myisampack} to take up much less space.

@xref{myisampack, , @code{myisampack}}.

The following is new in @code{MyISAM}:

column and key information.  You can't put a MERGE over tables where the

columns are packed differently, doesn't have exactly the same columns or

have the keys in different order.  Some of the tables can however be

compressed with @code{myisampack}.  @xref{myisampack}.

compressed with @code{myisampack}.  @xref{myisampack, , @code{myisampack}}.

When you create a @code{MERGE} table, you will get a @file{.frm} table

definition file and a @file{.MRG} table list file.  The @file{.MRG} just

@item

Changed @code{BDB} tables to use new compare function in Berkeley DB 3.2.3.

@item

You can now use Unix sockets with @code{mit-pthreads}.

You can now use Unix sockets with MIT-pthreads.

@item

Added the @code{latin5} (turkish) character set.

@item

@item

Fixed problem when handling indexfiles larger than 8G.

@item

Added latest patches to mit-pthreads for NetBSD.

Added latest patches to MIT-pthreads for NetBSD.

@item

Fixed problem with timezones that are < GMT - 11.

@item

Upgraded the configure and include files to match the latest 3.23 version.

This should increase portability and make it easier to build shared libraries.

@item

Added latest patches to mit-pthreads for NetBSD.

Added latest patches to MIT-pthreads for NetBSD.

@item

Fixed problem with timezones that are < GMT -11.

@item

@item

Some configure issues to fix problems with big file system detection.

@item

Fixed problem when sorting on big blob columns.

Fixed problem when sorting on big @code{BLOB} columns.

@item

@code{ROUND()} will now work on Windows.

@end itemize

@item

Fixed problem with @code{LOCK TABLES} combined with @code{DELETE FROM table}

@item

Fixed problem that INSERT ... SELECT didn't use SQL_BIG_TABLES.

Fixed problem that @code{INSERT ... SELECT} didn't use @code{SQL_BIG_TABLES}.

@item

@code{SET SQL_LOW_PRIORITY_UPDATES=#} didn't work.

@item

@code{GRANT ... IDENTIFIED BY}

@item

Fixed range optimiser bug in

@code{SELECT * FROM table_name WHERE key_part1 >= const AND (key_part2 = const OR key_part2 = const)}

@code{SELECT * FROM table_name WHERE key_part1 >= const AND (key_part2 = const

OR key_part2 = const)}.

@item

Fixed bug in compression key handling in ISAM.

Fixed bug in compression key handling in @code{ISAM}.

@end itemize

@strong{Important}: You must run the @code{mysql_fix_privilege_tables} script

when you upgrade to this version!  This is needed because of the new

@code{GRANT} system. If you don't do this, you will get @code{Access

denied} when you try to use @code{ALTER TABLE}, @code{CREATE INDEX} or

denied} when you try to use @code{ALTER TABLE}, @code{CREATE INDEX}, or

@code{DROP INDEX}.

@item

@code{GRANT} to allow/deny users table and column access.

@item

Changed @code{USER()} to return @code{user@@host}

Changed @code{USER()} to return a value in @code{user@@host} format.

Formerly it returned only @code{user}.

@item

Changed the syntax for how to set @code{PASSWORD} for another user.

@item

New command @code{FLUSH STATUS} that sets most status variables to zero.

New command @code{FLUSH STATUS} that resets most status variables to zero.

@item

New status variables: @code{aborted_threads}, @code{aborted_connects}.

@item

@code{SELECT} even if there is a thread waiting for another

@code{SELECT} to get a @code{WRITE LOCK}.

@item

Moved wild_compare to string class to be able to use @code{LIKE} on

Moved @code{wild_compare()} to string class to be able to use @code{LIKE} on

@code{BLOB}/@code{TEXT} columns with @code{\0}.

@item

Added @code{ESCAPE} option to @code{LIKE}.

@item

Czech character sets should now work much better.  You must also install

@uref{http://www.mysql.com/Downloads/Patches/czech-3.22.8-patch}.

This patch should also be installed if you are using a character set with

uses @code{my_strcoll()}!  The patch should always be safe to install (for any system),

but as this patch changes ISAM internals it's not yet in the default

distribution.

This patch should also be installed if you are using a character set which

uses @code{my_strcoll()}!  The patch should always be safe to install (for any

system), but as this patch changes @code{ISAM} internals it's not yet in the

default distribution.

@item

@code{DATE_ADD()} and @code{DATE_SUB()} didn't work with group functions.

@item

involving group functions (like @code{COUNT(*)}) without a @code{GROUP BY} but

with @code{HAVING}. The following now works:

@example

mysql> SELECT count(*) as C FROM table HAVING C > 1;

mysql> SELECT COUNT(*) as C FROM table HAVING C > 1;

@end example

@item

Changed the protocol for field functions to be faster and avoid some

Sorting on a function which made a division / 0 produced a wrong set

in some cases.

@item

Fixed @code{SELECT} problem with @code{LEFT()} when using the czech character

set.

Fixed @code{SELECT} problem with @code{LEFT()} when using the @code{czech}

character set.

@item

Fixed problem in @code{isamchk}; it couldn't repair a packed table in a very

unusual case.

@item

Changed @code{configure} for detection of FreeBSD 3.0 9803xx and above

@item

@code{WHERE} with string_column_key = constant_string didn't always find

all rows if the column had many values differing only with characters of

the same sort value (like e and @'e).

@code{WHERE} with @code{string_col_key = constant_string} didn't always

find all rows if the column had many values differing only with

characters of the same sort value (like e and @'e).

@item

Strings keys looked up with 'ref' were not compared in case-sensitive fashion.

@item

Fixed unlikely(?) key optimiser bug when using @code{OR}s of key parts

inside @code{AND}s.

@item

Added command @code{variables} to @code{mysqladmin}.

Added @code{variables} command to @code{mysqladmin}.

@item

A lot of small changes to the binary releases.

@item

@item

Fixed bug in @code{ORDER BY} on string formula with possible @code{NULL} values.

@item

Fixed problem in range optimiser when using <= on sub index.

Fixed problem in range optimiser when using @code{<=} on sub index.

@item

Added functions @code{DAYOFYEAR()}, @code{DAYOFMONTH()}, @code{MONTH()},

@code{YEAR()}, @code{WEEK()}, @code{QUARTER()}, @code{HOUR()}, @code{MINUTE()},

@code{SECOND()} and @code{FIND_IN_SET()}.

@item

Added command @code{SHOW VARIABLES}.

Added @code{SHOW VARIABLES} command.

@item

Added support of ``long constant strings'' from ANSI SQL:

@example

mysql> SELECT 'first ' 'second';       -> 'first second'

@end example

@item

Upgraded mSQL-Mysql-modules to 1.1825.

Upgraded Msql-Mysql-modules to 1.1825.

@item

Upgraded @code{mysqlaccess} to 2.02.

@item

Fixed optimiser bug when using

@code{WHERE data_field = date_field2 AND date_field2 = constant}.

@item

Added command @code{SHOW STATUS}.

Added @code{SHOW STATUS} command.

@item

Removed @file{manual.ps} from the source distribution to make it smaller.

@end itemize

@itemize @bullet

@item

Upgraded @code{DBD} to 1823. This version implements @code{mysql_use_result} in

@code{DBD-Mysql}.

Upgraded @code{DBD} to 1.1823. This version implements @code{mysql_use_result}

in @code{DBD-Mysql}.

@item

Benchmarks updated for empress (by Luuk).

@item

@item

Sorting on calculated @code{DOUBLE} values sorted on integer results instead.

@item

@code{mysql} no longer needs a database argument.

@code{mysql} no longer requires a database argument.

@item

Changed the place where @code{HAVING} should be. According to ANSI, it should

be after @code{GROUP BY} but before @code{ORDER BY}. MySQL Version 3.20

Fixed better @code{FOREIGN KEY} syntax skipping. New reserved words:

@code{MATCH}, @code{FULL}, @code{PARTIAL}.

@item

@code{mysqld} now allows IP number and hostname to the @code{--bind-address}

@code{mysqld} now allows IP number and hostname for the @code{--bind-address}

option.

@item

Added @code{SET OPTION CHARACTER SET cp1251_koi8} to enable conversions of

data to/from cp1251_koi8.

data to and from the @code{cp1251_koi8} character set.

@item

Lots of changes for Windows 95 port. In theory, this version should now be

easily portable to Windows 95.

Fixed syntax of @code{ALTER TABLE tbl_name ALTER COLUMN col_name SET DEFAULT

NULL}.

@item

Added @code{CHAR} (with no length specifier) as a synonym for @code{CHAR(1)}.

Added @code{CHAR} and @code{BIT} as synonyms for @code{CHAR(1)}.

@item

Fixed core dump when updating as a user who has only @strong{select} privilege.

@item

@file{FreeBSD-3.0-libc_r-1.0.diff},

which can be found at @uref{http://www.mysql.com/Downloads/Patches/}.

@item

Added new option @code{-O tmp_table_size=#} to @code{mysqld}.

Added new @code{-O tmp_table_size=#} option to @code{mysqld}.

@item

New function @code{FROM_UNIXTIME(timestamp)} which returns a date string in

'YYYY-MM-DD HH:MM:DD' format.

@code{'YYYY-MM-DD HH:MM:DD'} format.

@item

New function @code{SEC_TO_TIME(seconds)} which returns a string in

'HH:MM:SS' format.

@code{'HH:MM:SS'} format.

@item

New function @code{SUBSTRING_INDEX()}, originally by Zeev Suraski.

@end itemize

@code{mysqld} doesn't accept hostnames that start with digits followed by a

@code{'.'}, because the hostname may look like an IP number.

@item

Added @code{--skip-networking} option to @code{mysqld}, to only allow socket

Added @code{--skip-networking} option to @code{mysqld}, to allow only socket

connections.  (This will not work with MIT-pthreads!)

@item

Added check of too long table names for alias.

Fixed bug in @code{SELECT} optimiser when using many tables with the same

column used as key to different tables.

@item

Added new latin2 and Russian KOI8 character tables.

Added new @code{latin2} and Russian @code{KOI8} character tables.

@item

Added support for a dummy @code{GRANT} command to satisfy Powerbuilder.

@end itemize

Added new @code{DATETIME} type (by Giovanni Maruzzelli

@email{maruzz@@matrice.it}).

@item

Fixed that define @code{DONT_USE_DEFAULT_FIELDS} works.

Fixed that defining @code{DONT_USE_DEFAULT_FIELDS} works.

@item

Changed to use a thread to handle alarms instead of signals on Solaris to

avoid race conditions.

Added API function @code{mysql_get_client_info()}.

@item

@code{mysqld} now uses the @code{N_MAX_KEY_LENGTH} from @file{nisam.h} as

the maximum allowed key length.

the maximum allowable key length.

@item

The following now works:

@example

lookups.  The column that is used should be a constant for each group because

the value is calculated only once for the first row that is found for a group.

@example

mysql> SELECT id,lookup.text,sum(*) FROM test,lookup

mysql> SELECT id,lookup.text,SUM(*) FROM test,lookup

    ->        WHERE test.id=lookup.id GROUP BY id;

@end example

@item

@item

Changed @code{AUTO_INCREMENT} placement in the SQL query:

@example

INSERT into table (auto_field) values (0);

INSERT INTO table (auto_field) VALUES (0);

@end example

inserted 0, but it should insert an @code{AUTO_INCREMENT} value.

@item

Removed @code{host}, @code{user} and @code{db} tables from database @code{test}

in the distribution.

@item

@code{FIELD_TYPE_CHAR} can now be signed (-128 - 127) or unsigned (0 - 255)

@code{FIELD_TYPE_CHAR} can now be signed (-128 to 127) or unsigned (0 to 255)

Previously, it was always unsigned.

@item

Bug fixes in @code{CONCAT()} and @code{WEEKDAY()}.