merge

$opt_help=$opt_Information=$opt_delete=$opt_debug=$opt_stage=$opt_rsh_mail=$opt_no_test=$opt_no_perl=$opt_with_low_memory=$opt_fast_benchmark=$opt_static_client=$opt_static_server=$opt_static_perl=$opt_sur=$opt_with_small_disk=$opt_local_perl=$opt_tcpip=$opt_build_thread=$opt_no_mysqltest=$opt_use_old_distribution=$opt_enable_shared=$opt_no_crash_me=$opt_no_strip=0;

$opt_innodb=$opt_bdb=0;

GetOptions("Information","help","distribution=s","user=s","result=s","delete","no-test","no-mysqltest","perl-files=s","debug","config-options=s","config-env=s","stage=i","rsh-mail","with-low-memory","fast-benchmark","tmp=s","static-client","static-server","static-perl","no-perl","local-perl","perl-options=s","sur","with-small-disk","dbd-options=s","tcpip","suffix=s","build-thread=i","innodb","bdb","use-old-distribution","enable-shared","no-crash-me","no-strip","version-suffix=s", "with-other-libc=s) || usage();

GetOptions("Information","help","distribution=s","user=s","result=s","delete","no-test","no-mysqltest","perl-files=s","debug","config-options=s","config-env=s","stage=i","rsh-mail","with-low-memory","fast-benchmark","tmp=s","static-client","static-server","static-perl","no-perl","local-perl","perl-options=s","sur","with-small-disk","dbd-options=s","tcpip","suffix=s","build-thread=i","innodb","bdb","use-old-distribution","enable-shared","no-crash-me","no-strip","version-suffix=s", "with-other-libc=s") || usage();

usage() if ($opt_help || $opt_Information);

usage() if (!$opt_distribution);

@item

Works on many different platforms.  @xref{Which OS}.

@item

Uses GNU Automake, Autoconf (Ver 2.52 or newer), and Libtool for portability.

Uses GNU Automake (1.4), Autoconf (Ver 2.52 or newer), and Libtool for

portability.

@item

APIs for C, C++, Eiffel, Java, Perl, PHP, Python and Tcl.  @xref{Clients}.

@item

shell> ln -s mysql-VERSION-OS mysql

shell> cd mysql

shell> scripts/mysql_install_db

shell> chown -R root  /usr/local/mysql

shell> chown -R mysql /usr/local/mysql/data

shell> chgrp -R mysql /usr/local/mysql

shell> chown -R root /usr/local/mysql/bin

shell> chown -R root  .

shell> chown -R mysql ./data

shell> chgrp -R mysql .

shell> chown -R root ./bin

shell> bin/safe_mysqld --user=mysql &

or

shell> bin/mysqld_safe --user=mysql &

if you are running MySQL 4.x

@end example

@cindex adding, new users

shell> chgrp -R mysql /usr/local/mysql

shell> cp support-files/my-medium.cnf /etc/my.cnf

shell> /usr/local/mysql/bin/safe_mysqld --user=mysql &

or

shell> /usr/local/mysql/bin/mysqld_safe --user=mysql &

if you are running MySQL 4.x.

@end example

If you want have support for InnoDB tables, you should edit the

speed of your connection; be patient.

@item

You will need GNU @code{autoconf 2.13}, @code{automake 1.4},

You will need GNU @code{autoconf 2.52}, @code{automake 1.4},

@code{libtool}, and @code{m4} to run the next set of commands.

If you are using the 3.23 tree the new versions of @code{autoconf}

(2.52) and @code{automake} (1.5) will not work.

@code{automake} (1.5) doesn't yet work.

If you get some strange error during this stage, check that you really

have @code{libtool} installed!

@itemize @bullet

@item

Use @code{ORDER BY column DESC} now always sorts @code{NULL} values

first; In 3.23 this was not always consistent.

@item

@code{SHOW INDEX} has 2 columns more (@code{Null} and @code{Index_type})

than it had in 3.23.

@item

+-----------+---------------+

@end example

Note that two @code{NULL} are compared as equal is when you do an

@code{GROUP BY}.

In MySQL, 0 or @code{NULL} means false and anything else means true.

The default truth value from a boolean operation is 1.

When doing an @code{ORDER BY}, @code{NULL} values are always sorted first,

even if you are using @code{DESC}.

This special treatment of @code{NULL} is why, in the previous section, it

was necessary to determine which animals are no longer alive using

@code{death IS NOT NULL} instead of @code{death <> NULL}.

@end example

@code{Field} indicates the column name, @code{Type} is the data type for

the column, @code{Null} indicates whether or not the column can contain

the column, @code{NULL} indicates whether or not the column can contain

@code{NULL} values, @code{Key} indicates whether or not the column is

indexed, and @code{Default} specifies the column's default value.

shell> mysql < batch-file

@end example

If you are running @code{mysql} under windows and have some special

characters in the file that causes problems, you can do:

@example

dos> mysql -e "source batch-file"

@end example

If you need to specify connection parameters on the command line, the

command might look like this:

When you use @code{mysql} this way, you are creating a script file, then

executing the script.

If you want the script to continue even if you have errors, you should

use the @code{--force} command line option.

Why use a script?  Here are a few reasons:

@itemize @bullet

@code{mysql -t}.  To echo to the output the commands that are executed, use

@code{mysql -vvv}.

You can also use scripts in the @code{mysql} command line prompt by

using the @code{source} command:

@example

mysql> source filename

@end example

@node Twin, Apache, Batch mode, Tutorial

@section Queries from Twin Project

clause, if one is given.  If the user already had a password, it is replaced

by the new one.

Optional @code{PASSWORD} changes behaviour of @code{IDENTIFIED BY} from

accepting plain password to accept encrypted password as argument.

If you don't want to send the password in clear text you can use the

@code{PASSWORD} option followed by a scrambled password from SQL

function @code{PASSWORD()} or the C API function

@code{make_scrambled_password(char *to, const char *password)}.

@strong{Warning:} If you create a new user but do not specify an

@code{IDENTIFIED BY} clause, the user has no password.  This is insecure.

@item

The used table index is an index type that doesn't store rows in order.

(Like index in @code{HEAP} tables).

(Like the @code{HASH} index in @code{HEAP} tables).

@item

The index colum may contain @code{NULL} values and one is using

@code{ORDER BY ... DESC}.  This is because in SQL @code{NULL} values is

always sorted before normal values, independent of you are using

@code{DESC} or not.

@end itemize

Note that if such a query uses @code{LIMIT} to only retrieve

part of the rows, MySQL will use an index anyway, as it can

much more quickly find the few rows to return in the result.

@item

If the index range may contain @code{NULL} values and you are using

@code{ORDER BY ... DESC}

@end itemize

@node Indexes, Multiple-column indexes, MySQL indexes, Optimising Database Structure

@cindex @code{NULL}, testing for null

@findex <=> (Equal to)

@item <=>

Null safe equal:

NULL safe equal:

@example

mysql> select 1 <=> 1, NULL <=> NULL, 1 <=> NULL;

        -> 1 1 0

@itemize @bullet

@item

Use @code{ORDER BY column DESC} now sorts @code{NULL} values first.

@item

Fixed bug in @code{SELECT DISTINCT ... ORDER BY DESC} optimization.

@item

Fixed bug in @code{... HAVING 'GROUP_FUNCTION'(xxx) IS [NOT] NULL}.

@item

Fixed bug in truncation operator for boolean fulltext search.

@item

Allow numeric user id to @code{mysqld --user=#}.

@node News-3.23.50, News-3.23.49, News-3.23.x, News-3.23.x

@appendixsubsec Changes in release 3.23.50

@itemize @bullet

Fixed core-dump bug when reading client groups from option files using

@code{mysql_options()}.

@item

Memory leak (16 bytes per every @strong{corrupted} table) closed.

@item

Fixed binary builds to use @code{--enable-local-infile}.

@item

Update source to work with new @code{bison} version.

@item

Updated shell scripts to new agree with new POSIX standard.

@item

Fixed bug where @code{DATE_FORMAT()} returned empty string when used

with @code{GROUP BY}.

@end itemize

@node News-3.23.49, News-3.23.48, News-3.23.50, News-3.23.x

MySQL binary release 3.23.48 for Linux contained a new glibc library, which

has serious problems under high load and RedHat 7.2.  The 3.23.49 binary

release doesn't have this problem.

@item

Fixed shutdown problem on NT.

@end itemize

@node News-3.23.48, News-3.23.47, News-3.23.49, News-3.23.x

AC_DEFUN([MYSQL_CHECK_BDB], [

  AC_ARG_WITH([berkeley-db],

              [\

              [

  --with-berkeley-db[=DIR]

                          Use BerkeleyDB located in DIR],

              [bdb="$withval"],

              [bdb=no])

  AC_ARG_WITH([berkeley-db-includes],

              [\

              [

  --with-berkeley-db-includes=DIR

                          Find Berkeley DB headers in DIR],

              [bdb_includes="$withval"],

              [bdb_includes=default])

  AC_ARG_WITH([berkeley-db-libs],

              [\

              [

  --with-berkeley-db-libs=DIR

                          Find Berkeley DB libraries in DIR],

              [bdb_libs="$withval"],

AC_DEFUN([MYSQL_CHECK_INNODB], [

  AC_ARG_WITH([innodb],

              [\

              [

  --without-innodb        Do not include the InnoDB table handler],

              [innodb="$withval"],

              [innodb=yes])

dnl ---------------------------------------------------------------------------

dnl ---------------------------------------------------------------------------

dnl Got this from the GNU tar 1.13.11 distribution

dnl by Paul Eggert <eggert@twinsun.com>

dnl ---------------------------------------------------------------------------

trap 'rm -f $t; exit 1' 1 2 3 13 15

# Use the standard -k option if it works;

# otherwise fall back on the traditional notation.

if sort -k 1,1 /dev/null

then sort_2_etc='-k 2'

else sort_2_etc='+1'

fi

# Check to make sure we haven't duplicated a log record entry, and build

# the list of log record types that the test suite uses.

for i in $DIR; do

	for f in ../$i/*.src; do

		# Grab the PREFIX;  there should only be one per file, and

		# so it's okay to just take the first.

		grep '^PREFIX' $f | head -1

		grep '^PREFIX' $f | sed q

		egrep '^DEPRECATED[	 ]|^BEGIN[	 ]' $f | \

		    awk '{print $1 "\t" $2 "\t" $3}'

	done

done > $loglist

grep -v '^PREFIX' $loglist | awk '{print $2 "\t" $3}' | sort +1 -n | \

grep -v '^PREFIX' $loglist | awk '{print $2 "\t" $3}' | \

    sort $sort_2_etc -n | \

    uniq -d -f 1 > $t

[ -s $t ] && {

	echo "DUPLICATE LOG VALUES:"

#include <signal.h>

#include <violite.h>

const char *VER="11.20";

const char *VER="11.21";

/* Don't try to make a nice table if the data is too big */

#define MAX_COLUMN_LENGTH	     1024