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nexedi
MariaDB
Commits
9b496fc3
Commit
9b496fc3
authored
Aug 27, 2002
by
paul@teton.kitebird.com
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Merge paul@work.mysql.com:/home/bk/mysql-4.0
into teton.kitebird.com:/home/paul/mysql-4.0
parents
671e9ae0
6c44112c
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Docs/manual.texi
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9b496fc3
...
@@ -7971,7 +7971,7 @@ If you are using InnoDB tables, refer to the InnoDB-specific startup
...
@@ -7971,7 +7971,7 @@ If you are using InnoDB tables, refer to the InnoDB-specific startup
options. @xref{InnoDB start}.
options. @xref{InnoDB start}.
If you are using BDB (Berkeley DB) tables, you should familiarise
If you are using BDB (Berkeley DB) tables, you should familiarise
yourself with the different BDB
specific startup options. @xref{BDB start}.
yourself with the different BDB
-
specific startup options. @xref{BDB start}.
@node Automatic start, , Starting server, Post-installation
@node Automatic start, , Starting server, Post-installation
...
@@ -8328,7 +8328,7 @@ link and the original database are deleted. (This didn't happen in 3.22
...
@@ -8328,7 +8328,7 @@ link and the original database are deleted. (This didn't happen in 3.22
because configure didn't detect the @code{readlink} system call.)
because configure didn't detect the @code{readlink} system call.)
@item
@item
@code{OPTIMIZE TABLE} now
only works
for @code{MyISAM} tables.
@code{OPTIMIZE TABLE} now
works only
for @code{MyISAM} tables.
For other table types, you can use @code{ALTER TABLE} to optimise the table.
For other table types, you can use @code{ALTER TABLE} to optimise the table.
During @code{OPTIMIZE TABLE} the table is now locked from other threads.
During @code{OPTIMIZE TABLE} the table is now locked from other threads.
...
@@ -13423,7 +13423,7 @@ WHERE price=19.95
...
@@ -13423,7 +13423,7 @@ WHERE price=19.95
@end enumerate
@end enumerate
Another solution is to sort all rows descending by price and only
Another solution is to sort all rows descending by price and only
get the first row using the MySQL
specific @code{LIMIT} clause:
get the first row using the MySQL
-
specific @code{LIMIT} clause:
@example
@example
SELECT article, dealer, price
SELECT article, dealer, price
...
@@ -17757,7 +17757,7 @@ BACKUP TABLE tbl_name[,tbl_name...] TO '/path/to/backup/directory'
...
@@ -17757,7 +17757,7 @@ BACKUP TABLE tbl_name[,tbl_name...] TO '/path/to/backup/directory'
Copies to the backup directory the minimum number of table files needed
Copies to the backup directory the minimum number of table files needed
to restore the table, after flushing any buffered changes to disk. Currently
to restore the table, after flushing any buffered changes to disk. Currently
only works
for @code{MyISAM} tables.
works only
for @code{MyISAM} tables.
For @code{MyISAM} tables, copies @file{.frm} (definition) and
For @code{MyISAM} tables, copies @file{.frm} (definition) and
@file{.MYD} (data) files. The index file can be rebuilt from those two.
@file{.MYD} (data) files. The index file can be rebuilt from those two.
...
@@ -17821,7 +17821,7 @@ CHECK TABLE tbl_name[,tbl_name...] [option [option...]]
...
@@ -17821,7 +17821,7 @@ CHECK TABLE tbl_name[,tbl_name...] [option [option...]]
option = QUICK | FAST | MEDIUM | EXTENDED | CHANGED
option = QUICK | FAST | MEDIUM | EXTENDED | CHANGED
@end example
@end example
@code{CHECK TABLE}
only works
on @code{MyISAM} and @code{InnoDB} tables. On
@code{CHECK TABLE}
works only
on @code{MyISAM} and @code{InnoDB} tables. On
@code{MyISAM} tables it's the same thing as running @code{myisamchk -m
@code{MyISAM} tables it's the same thing as running @code{myisamchk -m
table_name} on the table.
table_name} on the table.
...
@@ -17928,7 +17928,7 @@ to set the column to some other value than 0.
...
@@ -17928,7 +17928,7 @@ to set the column to some other value than 0.
REPAIR TABLE tbl_name[,tbl_name...] [QUICK] [EXTENDED] [USE_FRM]
REPAIR TABLE tbl_name[,tbl_name...] [QUICK] [EXTENDED] [USE_FRM]
@end example
@end example
@code{REPAIR TABLE}
only works
on @code{MyISAM} tables and is the same
@code{REPAIR TABLE}
works only
on @code{MyISAM} tables and is the same
as running @code{myisamchk -r table_name} on the table.
as running @code{myisamchk -r table_name} on the table.
Normally you should never have to run this command, but if disaster strikes
Normally you should never have to run this command, but if disaster strikes
...
@@ -17959,8 +17959,8 @@ If @code{QUICK} is given then MySQL will try to do a
...
@@ -17959,8 +17959,8 @@ If @code{QUICK} is given then MySQL will try to do a
If you use @code{EXTENDED} then MySQL will create the index row
If you use @code{EXTENDED} then MySQL will create the index row
by row instead of creating one index at a time with sorting; this may be
by row instead of creating one index at a time with sorting; this may be
better than sorting on fixed-length keys if you have long @code{
char()
}
better than sorting on fixed-length keys if you have long @code{
CHAR
}
keys that compress very
good
.
keys that compress very
well
.
As of @code{MySQL} 4.0.2 there is a @code{USE_FRM} mode for @code{REPAIR}.
As of @code{MySQL} 4.0.2 there is a @code{USE_FRM} mode for @code{REPAIR}.
Use it if the @file{.MYI} file is missing or if its header is corrupted.
Use it if the @file{.MYI} file is missing or if its header is corrupted.
...
@@ -19131,7 +19131,7 @@ Deleted records are maintained in a linked list and subsequent @code{INSERT}
...
@@ -19131,7 +19131,7 @@ Deleted records are maintained in a linked list and subsequent @code{INSERT}
operations reuse old record positions. You can use @code{OPTIMIZE TABLE} to
operations reuse old record positions. You can use @code{OPTIMIZE TABLE} to
reclaim the unused space and to defragment the datafile.
reclaim the unused space and to defragment the datafile.
For the moment, @code{OPTIMIZE TABLE}
only works
on @code{MyISAM} and
For the moment, @code{OPTIMIZE TABLE}
works only
on @code{MyISAM} and
@code{BDB} tables. For @code{BDB} tables, @code{OPTIMIZE TABLE} is
@code{BDB} tables. For @code{BDB} tables, @code{OPTIMIZE TABLE} is
currently mapped to @code{ANALYZE TABLE}.
currently mapped to @code{ANALYZE TABLE}.
@xref{ANALYZE TABLE, , @code{ANALYZE TABLE}}.
@xref{ANALYZE TABLE, , @code{ANALYZE TABLE}}.
...
@@ -19310,7 +19310,7 @@ Otherwise, you can only see and kill your own threads.
...
@@ -19310,7 +19310,7 @@ Otherwise, you can only see and kill your own threads.
You can also use the @code{mysqladmin processlist} and @code{mysqladmin kill}
You can also use the @code{mysqladmin processlist} and @code{mysqladmin kill}
commands to examine and kill threads.
commands to examine and kill threads.
When you do a @code{KILL}, a thread
specific @code{kill flag} is set for
When you do a @code{KILL}, a thread
-
specific @code{kill flag} is set for
the thread.
the thread.
In most cases it may take some time for the thread to die as the kill
In most cases it may take some time for the thread to die as the kill
...
@@ -20192,7 +20192,7 @@ want to increase this value.
...
@@ -20192,7 +20192,7 @@ want to increase this value.
@item @code{record_rnd_buffer_size}
@item @code{record_rnd_buffer_size}
When reading rows in sorted order after a sort, the rows are read
When reading rows in sorted order after a sort, the rows are read
through this buffer to avoid a disk seeks. Can improve @code{ORDER BY}
through this buffer to avoid a disk seeks. Can improve @code{ORDER BY}
by a lot if set to a high value. As this is a thread
specific variable,
by a lot if set to a high value. As this is a thread
-
specific variable,
one should not set this big globally, but just change this when running
one should not set this big globally, but just change this when running
some specific big queries.
some specific big queries.
...
@@ -28617,16 +28617,18 @@ Starting from MySQL 4.0.3 we provide better access to a lot of system
...
@@ -28617,16 +28617,18 @@ Starting from MySQL 4.0.3 we provide better access to a lot of system
and connection variables. One can change most of them without having to take
and connection variables. One can change most of them without having to take
down the server.
down the server.
There are two kind of system variables: Thread (or connection) specific
There are two kind of system variables: Thread-specific (or
connection-specific)
variables that are unique to the current connection and global variables
variables that are unique to the current connection and global variables
that are either used to configure global events or used as initial
that are used to configure global events.
variables for a new connection.
Global variables also are used to set up the initial values of the
corresponding thread-specific variables for new connections.
When
mysqld starts
all global variables are initialised from command
When
@code{mysqld} starts,
all global variables are initialised from command
line arguments and option files. You can change the
used
value with the
line arguments and option files. You can change the value with the
@code{SET GLOBAL} command. When a new thread is created
the thread
@code{SET GLOBAL} command. When a new thread is created
, the thread-specific
specific
variables are initialised from the global variables and they
variables are initialised from the global variables and they
will not change even if
one issues
a new @code{SET GLOBAL} command.
will not change even if
you issue
a new @code{SET GLOBAL} command.
To set the value for a @code{GLOBAL} variable, you should use one
To set the value for a @code{GLOBAL} variable, you should use one
of the following syntaxes:
of the following syntaxes:
...
@@ -28669,15 +28671,15 @@ SHOW SESSION VARIABLES like 'sort_buffer_size';
...
@@ -28669,15 +28671,15 @@ SHOW SESSION VARIABLES like 'sort_buffer_size';
When you @strong{retrieve} a variable value with the
When you @strong{retrieve} a variable value with the
@code{@@@@variable_name} syntax and you don't specify @code{GLOBAL} or
@code{@@@@variable_name} syntax and you don't specify @code{GLOBAL} or
@code{SESSION} then MySQL will return the thread
specific
@code{SESSION} then MySQL will return the thread
-
specific
(@code{SESSION}) value if it exists. If not, MySQL will return the
(@code{SESSION}) value if it exists. If not, MySQL will return the
global value.
global value.
The reason for requiring @code{GLOBAL} for setting @code{GLOBAL} only
The reason for requiring @code{GLOBAL} for setting @code{GLOBAL} only
variables but not for retrieving them is to ensure that we don't later
variables but not for retrieving them is to ensure that we don't later
run into problems if we later would introduce a thread
specific variable
run into problems if we later would introduce a thread
-
specific variable
with the same name or remove a thread
specific variable. In this case
with the same name or remove a thread
-specific variable. In this case,
you could accident
ly change the state for the whole server and not
you could accident
ally change the state for the server as a whole, rather than
just for your own connection.
just for your own connection.
The following is a full list of all variables that you change and retrieve
The following is a full list of all variables that you change and retrieve
...
@@ -28732,7 +28734,7 @@ and if you can use @code{GLOBAL} or @code{SESSION} with them.
...
@@ -28732,7 +28734,7 @@ and if you can use @code{GLOBAL} or @code{SESSION} with them.
@item query_cache_size @tab num @tab GLOBAL
@item query_cache_size @tab num @tab GLOBAL
@item query_cache_type @tab enum @tab GLOBAL
@item query_cache_type @tab enum @tab GLOBAL
@item read_buffer_size @tab num @tab GLOBAL | SESSION
@item read_buffer_size @tab num @tab GLOBAL | SESSION
@item read_rnd_buffer_size num @tab GLOBAL | SESSION
@item read_rnd_buffer_size
@tab
num @tab GLOBAL | SESSION
@item rpl_recovery_rank @tab num @tab GLOBAL
@item rpl_recovery_rank @tab num @tab GLOBAL
@item safe_show_database @tab bool @tab GLOBAL
@item safe_show_database @tab bool @tab GLOBAL
@item server_id @tab num @tab GLOBAL
@item server_id @tab num @tab GLOBAL
...
@@ -28779,7 +28781,7 @@ Here is a description of some of the variables:
...
@@ -28779,7 +28781,7 @@ Here is a description of some of the variables:
@item identity @tab Alias for last_insert_id (Sybase compatiblity)
@item identity @tab Alias for last_insert_id (Sybase compatiblity)
@item sql_low_priority_updates @tab Alias for low_priority_updates
@item sql_low_priority_updates @tab Alias for low_priority_updates
@item sql_max_join_size @tab Alias for max_join_size
@item sql_max_join_size @tab Alias for max_join_size
@item delay_key_write_for_all_tables @tab If this and delay_key_write
is set
then all new MyISAM tables that are opened will use delayed key writes.
@item delay_key_write_for_all_tables @tab If this and delay_key_write
are set,
then all new MyISAM tables that are opened will use delayed key writes.
@item version @tab Alias for VERSION() (Sybase (?) compatability)
@item version @tab Alias for VERSION() (Sybase (?) compatability)
@end multitable
@end multitable
...
@@ -44840,7 +44842,7 @@ None.
...
@@ -44840,7 +44842,7 @@ None.
@subsubheading Description
@subsubheading Description
This function needs to be called for each created thread to initialise
This function needs to be called for each created thread to initialise
thread
specific variables.
thread
-
specific variables.
This is automatically called by @code{my_init()} and @code{mysql_connect()}.
This is automatically called by @code{my_init()} and @code{mysql_connect()}.
...
@@ -45230,12 +45232,12 @@ MySQL functions which did not create the connection to the
...
@@ -45230,12 +45232,12 @@ MySQL functions which did not create the connection to the
MySQL database:
MySQL database:
When you call @code{mysql_init()} or @code{mysql_connect()}, MySQL will
When you call @code{mysql_init()} or @code{mysql_connect()}, MySQL will
create a thread
specific variable for the thread that is used by the
create a thread
-
specific variable for the thread that is used by the
debug library (among other things).
debug library (among other things).
If you call a MySQL function, before the thread has
If you call a MySQL function, before the thread has
called @code{mysql_init()} or @code{mysql_connect()}, the thread will
called @code{mysql_init()} or @code{mysql_connect()}, the thread will
not have the necessary thread
specific variables in place and you are
not have the necessary thread
-
specific variables in place and you are
likely to end up with a core dump sooner or later.
likely to end up with a core dump sooner or later.
The get things to work smoothly you have to do the following:
The get things to work smoothly you have to do the following:
...
@@ -45249,8 +45251,8 @@ Call @code{mysql_thread_init()} in the thread handler before calling
...
@@ -45249,8 +45251,8 @@ Call @code{mysql_thread_init()} in the thread handler before calling
any MySQL function.
any MySQL function.
@item
@item
In the thread, call @code{mysql_thread_end()} before calling
In the thread, call @code{mysql_thread_end()} before calling
@code{pthread_exit()}. This will free the memory used by MySQL
thread
@code{pthread_exit()}. This will free the memory used by MySQL
specific variables.
thread-
specific variables.
@end enumerate
@end enumerate
You may get some errors because of undefined symbols when linking your
You may get some errors because of undefined symbols when linking your
...
@@ -45356,11 +45358,11 @@ embedded. @xref{Option files}.
...
@@ -45356,11 +45358,11 @@ embedded. @xref{Option files}.
Put common options in the @code{[server]} section. These will be read by
Put common options in the @code{[server]} section. These will be read by
both MySQL versions.
both MySQL versions.
@item
@item
Put client/server
specific options in the @code{[mysqld]} section.
Put client/server
-
specific options in the @code{[mysqld]} section.
@item
@item
Put embedded MySQL
specific options in the @code{[embedded]} section.
Put embedded MySQL
-
specific options in the @code{[embedded]} section.
@item
@item
Put application
specific options in a @code{[ApplicationName_SERVER]}
Put application
-
specific options in a @code{[ApplicationName_SERVER]}
section.
section.
@end itemize
@end itemize
...
@@ -47246,7 +47248,7 @@ you have to increase this variable both in the client and in the server.
...
@@ -47246,7 +47248,7 @@ you have to increase this variable both in the client and in the server.
It's safe to increase this variable as memory is only allocated when
It's safe to increase this variable as memory is only allocated when
needed; this variable is more a precaution to catch wrong packets
needed; this variable is more a precaution to catch wrong packets
between the client/server and also to ensure that you don't accidently
between the client/server and also to ensure that you don't accident
al
ly
use big packets so that you run out of memory.
use big packets so that you run out of memory.
If you are using the @code{mysql} client, you may specify a bigger
If you are using the @code{mysql} client, you may specify a bigger
...
@@ -50446,7 +50448,7 @@ Fixed client hangup bug when using some SQL commands with wrong syntax.
...
@@ -50446,7 +50448,7 @@ Fixed client hangup bug when using some SQL commands with wrong syntax.
@item
@item
Fixed a timing bug in @code{DROP DATABASE}
Fixed a timing bug in @code{DROP DATABASE}
@item
@item
New @code{SET [GLOBAL | SESSION]} syntax to change thread
specific and global
New @code{SET [GLOBAL | SESSION]} syntax to change thread
-
specific and global
server variables at runtime.
server variables at runtime.
@item
@item
Added variable @code{slave_compressed_protocol}.
Added variable @code{slave_compressed_protocol}.
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