@@ -2062,7 +2062,6 @@ report about lost data because of bugs in @strong{MySQL}.
@cindex retrieving, data
@cindex data, ISAM table handler
@item The MyISAM table handler --- Gamma
This is new in @strong{MySQL} Version 3.23. It's largely based on the ISAM
table code but has a lot of new and very useful features.
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@@ -2154,6 +2153,9 @@ The Berkeley DB code is very stable, but we are still improving the interface
between @strong{MySQL} and BDB tables, so it will take some time before this
is as tested as the other table types.
@item Innobase Tables -- Alpha
This is a very recent addition to @code{MySQL} and are not very tested yet.
@item Automatic recovery of MyISAM tables - Beta.
This only affects the new code that checks if the table was closed properly
on open and executes an automatic check/repair of the table if it wasn't.
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@@ -12241,7 +12243,7 @@ connections:
@item @code{'x.y.%'} @tab @code{'fred'} @tab @code{fred}, connecting from @code{x.y.net}, @code{x.y.com},@code{x.y.edu}, etc. (this is probably not useful)
@item @code{'144.155.166.177'} @tab @code{'fred'} @tab @code{fred}, connecting from the host with IP address @code{144.155.166.177}
@item @code{'144.155.166.%'} @tab @code{'fred'} @tab @code{fred}, connecting from any host in the @code{144.155.166} class C subnet
@item @code{'144.155.166.0/24'} @tab @code{'fred'} @tab Same as previous example
@item @code{'144.155.166.0/255.255.255.0'} @tab @code{'fred'} @tab Same as previous example
@end multitable
Because you can use IP wild-card values in the @code{Host} field (for example,
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@@ -18322,12 +18324,12 @@ If you specify a @code{SELECT} after the @code{CREATE STATEMENT},
@example
mysql> CREATE TABLE test (a int not null auto_increment,
primary key (a), key(b))
TYPE=HEAP SELECT b,c from test2;
TYPE=MyISAM SELECT b,c from test2;
@end example
This will create a @code{HEAP} table with 3 columns. Note that the table will
automatically be deleted if any errors occur while copying data
into the table.
This will create a @code{MyISAM} table with 3 columns. Note that the
table will automatically be deleted if any errors occur while copying
data into the table.
@item
The @code{RAID_TYPE} option will help you to break the 2G/4G limit for
the MyISAM data file (not the index file) on
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@@ -23504,6 +23506,60 @@ Innobase cannot notice. In cases like this the timeout is useful to
resolve the situation.
@end multitable
You can query the amount of free space in the Innobase tablespace (=
data files you specified in my.cnf) by issuing the table status command
of @strong{MySQL} for any table you have created with @code{TYPE =
INNOBASE}. Then the amount of free space in the tablespace appears in
the table comment section in the output of SHOW. An example:
@example
SHOW TABLE STATUS FROM TEST LIKE 'CUSTOMER'
@end example
if you have created a table of name CUSTOMER in a database you have named
TEST. Note that the statistics SHOW gives about Innobase tables
are only approximate: they are used in SQL optimization. Table and
index reserved sizes in bytes are accurate, though.
Note that in addition to your tables, the rollback segment uses space
from the tablespace.
Since Innobase is a multiversioned database, it must keep information
of old versions of rows in the tablespace. This information is stored
in a data structure called a rollback segment, like in Oracle. In contrast
to Oracle, you do not need to configure the rollback segment in any way in
Innobase. If you issue SELECTs, which by default do a consistent read in
Innobase, remember to commit your transaction regularly. Otherwise
the rollback segment will grow because it has to preserve the information
needed for further consistent reads in your transaction: in Innobase
all consistent reads within one transaction will see the same timepoint
snapshot of the database: the reads are also 'consistent' with
respect to each other.
Some Innobase errors: If you run out of file space in the tablespace,
you will get the MySQL 'Table is full' error. If you want to make your
tablespace bigger, you have to shut down MySQL and add a new datafile
specification to my.conf, to the innobase_data_file_path parameter.
A transaction deadlock or a timeout in a lock wait will give 'Table handler
error 1000000'.
Contact information of Innobase Oy, producer of the Innobase engine:
Website: Being registered, probably @uref{http://www.innobase.fi}.
