Analyse and store the key distribution for the table. During the
analyse the table is locked with a read lock. This works on
analysis, the table is locked with a read lock. This works on
@code{MyISAM} and @code{BDB} tables.
This is equivalent to running @code{myisamchk -a} on the table.
...
...
@@ -18961,7 +18961,7 @@ the table will not be analysed again.
@cindex caches, clearing
@example
FLUSH flush_option [,flush_option]
FLUSH flush_option [,flush_option] ...
@end example
You should use the @code{FLUSH} command if you want to clear some of the
...
...
@@ -18983,7 +18983,8 @@ Flushing the host tables allows the host to attempt to connect
again. @xref{Blocked host}. You can start @code{mysqld} with
@code{-O max_connection_errors=999999999} to avoid this error message.
@item @code{DES_KEY_FILE} @tab Reloads the des keys from the file specified with @code{--des-key-file}.
@item @code{DES_KEY_FILE} @tab Reloads the DES keys from the file that was
specified with the @code{--des-key-file} option at server startup time.
@item @code{LOGS} @tab Closes and reopens all log files.
If you have specified the update log file or a binary log file without
...
...
@@ -18996,11 +18997,13 @@ signal to the @code{mysqld} server.
@item @code{PRIVILEGES} @tab Reloads the privileges from the grant tables in
the @code{mysql} database.
@item @code{QUERY CACHE} @tab Defragment the query cache to better utilise its memory. This command will not remove any queries from the cache.
@item @code{QUERY CACHE} @tab Defragment the query cache to better utilise its
memory. This command will not remove any queries from the cache, unlike
@code{RESET QUERY CACHE}.
@item @code{TABLES} @tab Closes all open tables and force all tables in use to be closed. This also flushes the query cache.
@item @code{[TABLE | TABLES] table_name [,table_name...]} @tab Flushes only the given tables.
@item @code{[TABLE | TABLES] tbl_name [,tbl_name...]} @tab Flushes only the given tables.
@item @code{TABLES WITH READ LOCK} @tab Closes all open tables and locks all tables for all databases with a read until one executes @code{UNLOCK TABLES}. This is very convenient way to get backups if you have a file system, like Veritas,that can take snapshots in time.
...
...
@@ -19012,32 +19015,31 @@ utility, using the @code{flush-hosts}, @code{flush-logs}, @code{reload},
or @code{flush-tables} commands.
Take also a look at the @code{RESET} command used with replication.
@xref{RESET}.
@xref{RESET, , @code{RESET}}.
@node RESET, KILL, FLUSH, Database Administration
@subsection @code{RESET} Syntax
@example
FLUSH flush_option [,flush_option]
RESET reset_option [,reset_option] ...
@end example
The @code{RESET} command is used to clear things. It also acts as an stronger
version of the @code{FLUSH} command. @xref{FLUSH}.
version of the @code{FLUSH} command. @xref{FLUSH, , @code{FLUSH}}.
To execute @code{RESET}, you must have the @strong{reload} privilege.
@multitable @columnfractions .25 .75
@item @strong{Option} @tab @strong{Description}
@item @code{MASTER}
@tab Deletes all binary logs listed in the index file, resetting the binlog
@item @code{MASTER} @tab Deletes all binary logs listed in the index file, resetting the binlog
index file to be empty. In pre-3.23.26 versions, @code{FLUSH MASTER} (Master)
@item @code{SLAVE}
@tab Makes the slave forget its replication position in the master
@item @code{SLAVE} @tab Makes the slave forget its replication position in the master
logs. In pre 3.23.26 versions the command was called
@code{FLUSH SLAVE}(Slave)
@item @code{QUERY CACHE}
@tab Removes all query results from the query cache.
@item @code{QUERY CACHE} @tab Removes all query results from the query cache.
@end multitable
@node KILL, SHOW, RESET, Database Administration
...
...
@@ -35543,7 +35545,7 @@ column, the numbers will start from 1 again.
@findex RENAME TABLE
@example
RENAME TABLE tbl_name TO new_table_name[, tbl_name2 TO new_table_name2,...]
RENAME TABLE tbl_name TO new_tbl_name[, tbl_name2 TO new_tbl_name2,...]
@end example
The rename is done atomically, which means that no other thread can
...
...
@@ -35568,15 +35570,15 @@ As long as two databases are on the same disk you can also rename
from one database to another:
@example
RENAME TABLE current_database.table_name TO other_database.table_name;
RENAME TABLE current_db.tbl_name TO other_db.tbl_name;
@end example
When you execute @code{RENAME}, you can't have any locked tables or
active transactions. You must also have the @code{ALTER} and @code{DROP}
privilege on the original table and @code{CREATE} and @code{INSERT}
privilege on the new table.
active transactions. You must also have the @strong{alter} and @strong{drop}
privileges on the original table, and the @strong{create} and @strong{insert}
privileges on the new table.
If MySQL encounters any errors in a multipletable rename, it
If MySQL encounters any errors in a multiple-table rename, it
will do a reverse rename for all renamed tables to get everything back
to the original state.
...
...
@@ -35966,11 +35968,12 @@ tables.
@node SET TRANSACTION, , LOCK TABLES, Transactional Commands
@subsection @code{SET TRANSACTION} Syntax
@findex SET TRANSACTION
@findex ISOLATION LEVEL
@example
SET [GLOBAL | SESSION] TRANSACTION ISOLATION LEVEL
