MYSQLBINLOG(1) MySQL Database System MYSQLBINLOG(1)
NAME
mysqlbinlog - utility for processing binary log files
SYNOPSIS
mysqlbinlog [options] log_file ...
DESCRIPTION
The server's binary log consists of files containing "events" that
describe modifications to database contents. The server writes these
files in binary format. To display their contents in text format, use
the mysqlbinlog utility. You can also use mysqlbinlog to display the
contents of relay log files written by a slave server in a replication
setup because relay logs have the same format as binary logs. The
binary log and relay log are discussed further in Section 5.2.4, "The
Binary Log", and Section 16.2.2, "Replication Relay and Status Files".
Invoke mysqlbinlog like this:
shell> mysqlbinlog [options] log_file ...
For example, to display the contents of the binary log file named
binlog.000003, use this command:
shell> mysqlbinlog binlog.0000003
The output includes events contained in binlog.000003. For
statement-based logging, event information includes the SQL statement,
the ID of the server on which it was executed, the timestamp when the
statement was executed, how much time it took, and so forth. For
row-based logging, the event indicates a row change rather than an SQL
statement. See Section 16.1.2, "Replication Formats", for information
about logging modes.
Events are preceded by header comments that provide additional
information. For example:
# at 141
#100309 9:28:36 server id 123 end_log_pos 245
Query thread_id=3350 exec_time=11 error_code=0
In the first line, the number following at indicates the starting
position of the event in the binary log file.
The second line starts with a date and time indicating when the
statement started on the server where the event originated. For
replication, this timestamp is propagated to slave servers. server id
is the server_id value of the server where the event originated.
end_log_pos indicates where the next event starts (that is, it is the
end position of the current event + 1). thread_id indicates which
thread executed the event. exec_time is the time spent executing the
event, on a master server. On a slave, it is the difference of the end
execution time on the slave minus the beginning execution time on the
master. The difference serves as an indicator of how much replication
lags behind the master. error_code indicates the result from executing
the event. Zero means that no error occurred.
The output from mysqlbinlog can be re-executed (for example, by using
it as input to mysql) to redo the statements in the log. This is useful
for recovery operations after a server crash. For other usage examples,
see the discussion later in this section and Section 6.5, "Point-in-
Time (Incremental) Recovery Using the Binary Log".
Normally, you use mysqlbinlog to read binary log files directly and
apply them to the local MySQL server. It is also possible to read
binary logs from a remote server by using the --read-from-remote-server
option. To read remote binary logs, the connection parameter options
can be given to indicate how to connect to the server. These options
are --host, --password, --port, --protocol, --socket, and --user; they
are ignored except when you also use the --read-from-remote-server
option.
mysqlbinlog supports the following options, which can be specified on
the command line or in the [mysqlbinlog] and [client] option file
groups. mysqlbinlog also supports the options for processing option
files described at Section 4.2.3.3.1, "Command-Line Options that Affect
Option-File Handling".
o --help, -?
Display a help message and exit.
o --base64-output[=value]
This option determines when events should be displayed encoded as
base-64 strings using BINLOG statements. The option has these
allowable values (not case sensitive):
o AUTO ("automatic") or UNSPEC ("unspecified") displays BINLOG
statements automatically when necessary (that is, for format
description events and row events). This is the default if no
--base64-output option is given.
Note
Automatic BINLOG display is the only safe behavior if you
intend to use the output of mysqlbinlog to re-execute
binary log file contents. The other option values are
intended only for debugging or testing purposes because
they may produce output that does not include all events in
executable form.
o ALWAYS displays BINLOG statements whenever possible. This is
the implied value if the option is given as --base64-output
without a value.
o NEVER causes BINLOG statements not to be displayed.
mysqlbinlog exits with an error if a row event is found that
must be displayed using BINLOG.
o DECODE-ROWS specifies to mysqlbinlog that you intend for row
events to be decoded and displayed as commented SQL statements
by also specifying the --verbose option. Like NEVER,
DECODE-ROWS suppresses display of BINLOG statements, but unlike
NEVER, it does not exit with an error if a row event is found.
The --base64-output option was introduced in MySQL 5.1.5, to be
given as --base64-output or --skip-base64-output (with the
sense of AUTO or NEVER). The option values described in the
preceding list may be used as of MySQL 5.1.24, with the
exception of UNSPEC and DECODE-ROWS, which are available as of
MySQL 5.1.28.
For examples that show the effect of --base64-output and
--verbose on row event output, see the section called
"MYSQLBINLOG ROW EVENT DISPLAY".
o --character-sets-dir=path
The directory where character sets are installed. See
Section 9.5, "Character Set Configuration".
o --database=db_name, -d db_name
This option causes mysqlbinlog to output entries from the
binary log (local log only) that occur while db_name is been
selected as the default database by USE.
The --database option for mysqlbinlog is similar to the
--binlog-do-db option for mysqld, but can be used to specify
only one database. If --database is given multiple times, only
the last instance is used.
The effects of this option depend on whether the
statement-based or row-based logging format is in use, in the
same way that the effects of --binlog-do-db depend on whether
statement-based or row-based logging is in use.
Statement-based logging. The --database option works as
follows:
o While db_name is the default database, statements are
output whether they modify tables in db_name or a different
database.
o Unless db_name is selected as the default database,
statements are not output, even if they modify tables in
db_name.
o There is an exception for CREATE DATABASE, ALTER DATABASE,
and DROP DATABASE. The database being created, altered, or
dropped is considered to be the default database when
determining whether to output the statement.
Suppose that the binary log was created by executing these
statements using statement-based-logging:
INSERT INTO test.t1 (i) VALUES(100);
INSERT INTO db2.t2 (j) VALUES(200);
USE test;
INSERT INTO test.t1 (i) VALUES(101);
INSERT INTO t1 (i) VALUES(102);
INSERT INTO db2.t2 (j) VALUES(201);
USE db2;
INSERT INTO test.t1 (i) VALUES(103);
INSERT INTO db2.t2 (j) VALUES(202);
INSERT INTO t2 (j) VALUES(203);
mysqlbinlog --database=test does not output the first two
INSERT statements because there is no default database. It
outputs the three INSERT statements following USE test, but
not the three INSERT statements following USE db2.
mysqlbinlog --database=db2 does not output the first two
INSERT statements because there is no default database. It
does not output the three INSERT statements following USE
test, but does output the three INSERT statements following
USE db2.
Row-based logging. mysqlbinlog outputs only entries that
change tables belonging to db_name. The default database
has no effect on this. Suppose that the binary log just
described was created using row-based logging rather than
statement-based logging. mysqlbinlog --database=test
outputs only those entries that modify t1 in the test
database, regardless of whether USE was issued or what the
default database is. If a server is running with
binlog_format set to MIXED and you want it to be possible
to use mysqlbinlog with the --database option, you must
ensure that tables that are modified are in the database
selected by USE. (In particular, no cross-database updates
should be used.)
Note
This option did not work correctly for mysqlbinlog with
row-based logging prior to MySQL 5.1.37. (Bug#42941[1])
o --debug[=debug_options], -# [debug_options]
Write a debugging log. A typical debug_options string is
'd:t:o,file_name'. The default is
'd:t:o,/tmp/mysqlbinlog.trace'.
o --debug-check
Print some debugging information when the program exits.
This option was added in MySQL 5.1.21.
o --debug-info
Print debugging information and memory and CPU usage
statistics when the program exits. This option was added in
MySQL 5.1.21.
o --disable-log-bin, -D
Disable binary logging. This is useful for avoiding an
endless loop if you use the --to-last-log option and are
sending the output to the same MySQL server. This option
also is useful when restoring after a crash to avoid
duplication of the statements you have logged.
This option requires that you have the SUPER privilege. It
causes mysqlbinlog to include a SET sql_log_bin = 0
statement in its output to disable binary logging of the
remaining output. The SET statement is ineffective unless
you have the SUPER privilege.
o --force-read, -f
With this option, if mysqlbinlog reads a binary log event
that it does not recognize, it prints a warning, ignores
the event, and continues. Without this option, mysqlbinlog
stops if it reads such an event.
o --hexdump, -H
Display a hex dump of the log in comments, as described in
the section called "MYSQLBINLOG HEX DUMP FORMAT". The hex
output can be helpful for replication debugging. This
option was added in MySQL 5.1.2.
o --host=host_name, -h host_name
Get the binary log from the MySQL server on the given host.
o --local-load=path, -l path
Prepare local temporary files for LOAD DATA INFILE in the
specified directory.
o --offset=N, -o N
Skip the first N entries in the log.
o --password[=password], -p[password]
The password to use when connecting to the server. If you
use the short option form (-p), you cannot have a space
between the option and the password. If you omit the
password value following the --password or -p option on the
command line, mysqlbinlog prompts for one.
Specifying a password on the command line should be
considered insecure. See Section 5.3.2.2, "End-User
Guidelines for Password Security". You can use an option
file to avoid giving the password on the command line.
o --port=port_num, -P port_num
The TCP/IP port number to use for connecting to a remote
server.
o --position=N
Deprecated. Use --start-position instead. --position is
removed in MySQL 5.5.
o --protocol={TCP|SOCKET|PIPE|MEMORY}
The connection protocol to use for connecting to the
server. It is useful when the other connection parameters
normally would cause a protocol to be used other than the
one you want. For details on the allowable values, see
Section 4.2.2, "Connecting to the MySQL Server".
o --open-files-limit=NUM
Sets the open_files_limit variable, which is used to
reserve file descriptors for mysqlbinlog.
o --read-from-remote-server, -R
Read the binary log from a MySQL server rather than reading
a local log file. Any connection parameter options are
ignored unless this option is given as well. These options
are --host, --password, --port, --protocol, --socket, and
--user.
This option requires that the remote server be running. It
works only for binary log files on the remote server, not
relay log files.
o --result-file=name, -r name
Direct output to the given file.
o --server-id=id
Display only those events created by the server having the
given server ID. This option is available as of MySQL
5.1.4.
o --set-charset=charset_name
Add a SET NAMES charset_name statement to the output to
specify the character set to be used for processing log
files. This option was added in MySQL 5.1.12.
o --short-form, -s
Display only the statements contained in the log, without
any extra information.
o --socket=path, -S path
For connections to localhost, the Unix socket file to use,
or, on Windows, the name of the named pipe to use.
o --start-datetime=datetime
Start reading the binary log at the first event having a
timestamp equal to or later than the datetime argument. The
datetime value is relative to the local time zone on the
machine where you run mysqlbinlog. The value should be in a
format accepted for the DATETIME or TIMESTAMP data types.
For example:
shell> mysqlbinlog --start-datetime="2005-12-25 11:25:56" binlog.000003
This option is useful for point-in-time recovery. See
Section 6.3, "Example Backup and Recovery Strategy".
o --start-position=N, -j N
Start reading the binary log at the first event having a
position equal to or greater than N. This option applies to
the first log file named on the command line.
This option is useful for point-in-time recovery. See
Section 6.3, "Example Backup and Recovery Strategy".
o --stop-datetime=datetime
Stop reading the binary log at the first event having a
timestamp equal to or later than the datetime argument.
This option is useful for point-in-time recovery. See the
description of the --start-datetime option for information
about the datetime value.
This option is useful for point-in-time recovery. See
Section 6.3, "Example Backup and Recovery Strategy".
o --stop-position=N
Stop reading the binary log at the first event having a
position equal to or greater than N. This option applies to
the last log file named on the command line.
This option is useful for point-in-time recovery. See
Section 6.3, "Example Backup and Recovery Strategy".
o --to-last-log, -t
Do not stop at the end of the requested binary log from a
MySQL server, but rather continue printing until the end of
the last binary log. If you send the output to the same
MySQL server, this may lead to an endless loop. This option
requires --read-from-remote-server.
o --user=user_name, -u user_name
The MySQL user name to use when connecting to a remote
server.
o --verbose, -v
Reconstruct row events and display them as commented SQL
statements. If this option is given twice, the output
includes comments to indicate column data types and some
metadata. This option was added in MySQL 5.1.28.
For examples that show the effect of --base64-output and
--verbose on row event output, see the section called
"MYSQLBINLOG ROW EVENT DISPLAY".
o --version, -V
Display version information and exit.
You can also set the following variable by using
--var_name=value syntax:
o open_files_limit
Specify the number of open file descriptors to reserve.
You can pipe the output of mysqlbinlog into the mysql client to
execute the events contained in the binary log. This technique
is used to recover from a crash when you have an old backup
(see Section 6.5, "Point-in-Time (Incremental) Recovery Using
the Binary Log"). For example:
shell> mysqlbinlog binlog.000001 | mysql -u root -p
Or:
shell> mysqlbinlog binlog.[0-9]* | mysql -u root -p
You can also redirect the output of mysqlbinlog to a text file
instead, if you need to modify the statement log first (for
example, to remove statements that you do not want to execute
for some reason). After editing the file, execute the
statements that it contains by using it as input to the mysql
program:
shell> mysqlbinlog binlog.000001 > tmpfile
shell> ... edit tmpfile ...
shell> mysql -u root -p < tmpfile
When mysqlbinlog is invoked with the --start-position option,
it displays only those events with an offset in the binary log
greater than or equal to a given position (the given position
must match the start of one event). It also has options to stop
and start when it sees an event with a given date and time.
This enables you to perform point-in-time recovery using the
--stop-datetime option (to be able to say, for example, "roll
forward my databases to how they were today at 10:30 a.m.").
If you have more than one binary log to execute on the MySQL
server, the safe method is to process them all using a single
connection to the server. Here is an example that demonstrates
what may be unsafe:
shell> mysqlbinlog binlog.000001 | mysql -u root -p # DANGER!!
shell> mysqlbinlog binlog.000002 | mysql -u root -p # DANGER!!
Processing binary logs this way using different connections to
the server causes problems if the first log file contains a
CREATE TEMPORARY TABLE statement and the second log contains a
statement that uses the temporary table. When the first mysql
process terminates, the server drops the temporary table. When
the second mysql process attempts to use the table, the server
reports "unknown table."
To avoid problems like this, use a single mysql process to
execute the contents of all binary logs that you want to
process. Here is one way to do so:
shell> mysqlbinlog binlog.000001 binlog.000002 | mysql -u root -p
Another approach is to write all the logs to a single file and
then process the file:
shell> mysqlbinlog binlog.000001 > /tmp/statements.sql
shell> mysqlbinlog binlog.000002 >> /tmp/statements.sql
shell> mysql -u root -p -e "source /tmp/statements.sql"
mysqlbinlog can produce output that reproduces a LOAD DATA
INFILE operation without the original data file. mysqlbinlog
copies the data to a temporary file and writes a LOAD DATA
LOCAL INFILE statement that refers to the file. The default
location of the directory where these files are written is
system-specific. To specify a directory explicitly, use the
--local-load option.
Because mysqlbinlog converts LOAD DATA INFILE statements to
LOAD DATA LOCAL INFILE statements (that is, it adds LOCAL),
both the client and the server that you use to process the
statements must be configured with the LOCAL capability
enabled. See Section 5.3.5, "Security Issues with LOAD DATA
LOCAL".
Warning
The temporary files created for LOAD DATA LOCAL statements
are not automatically deleted because they are needed until
you actually execute those statements. You should delete
the temporary files yourself after you no longer need the
statement log. The files can be found in the temporary file
directory and have names like original_file_name-#-#.
MYSQLBINLOG HEX DUMP FORMAT
The --hexdump option causes mysqlbinlog to produce a hex dump of the
binary log contents:
shell> mysqlbinlog --hexdump master-bin.000001
The hex output consists of comment lines beginning with #, so the
output might look like this for the preceding command:
/*!40019 SET @@session.max_insert_delayed_threads=0*/;
/*!50003 SET @OLD_COMPLETION_TYPE=@@COMPLETION_TYPE,COMPLETION_TYPE=0*/;
# at 4
#051024 17:24:13 server id 1 end_log_pos 98
# Position Timestamp Type Master ID Size Master Pos Flags
# 00000004 9d fc 5c 43 0f 01 00 00 00 5e 00 00 00 62 00 00 00 00 00
# 00000017 04 00 35 2e 30 2e 31 35 2d 64 65 62 75 67 2d 6c |..5.0.15.debug.l|
# 00000027 6f 67 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |og..............|
# 00000037 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
# 00000047 00 00 00 00 9d fc 5c 43 13 38 0d 00 08 00 12 00 |.......C.8......|
# 00000057 04 04 04 04 12 00 00 4b 00 04 1a |.......K...|
# Start: binlog v 4, server v 5.0.15-debug-log created 051024 17:24:13
# at startup
ROLLBACK;
Hex dump output currently contains the elements in the following list.
This format is subject to change. (For more information about binary
log format, see
http://forge.mysql.com/wiki/MySQL_Internals_Binary_Log.)
o Position: The byte position within the log file.
o Timestamp: The event timestamp. In the example shown, '9d fc 5c 43'
is the representation of '051024 17:24:13' in hexadecimal.
o Type: The event type code. In the example shown, '0f' indicates a
FORMAT_DESCRIPTION_EVENT. The following table lists the possible
type codes.
+-----+--------------------------+---------------------------------+
|Type | Name | Meaning |
+-----+--------------------------+---------------------------------+
|00 | UNKNOWN_EVENT | This event should never be |
| | | present in the log. |
+-----+--------------------------+---------------------------------+
|01 | START_EVENT_V3 | This indicates the start of a |
| | | log file written by MySQL 4 or |
| | | earlier. |
+-----+--------------------------+---------------------------------+
|02 | QUERY_EVENT | The most common type of events. |
| | | These contain statements |
| | | executed on the master. |
+-----+--------------------------+---------------------------------+
|03 | STOP_EVENT | Indicates that master has |
| | | stopped. |
+-----+--------------------------+---------------------------------+
|04 | ROTATE_EVENT | Written when the master |
| | | switches to a new log file. |
+-----+--------------------------+---------------------------------+
|05 | INTVAR_EVENT | Used for AUTO_INCREMENT values |
| | | or when the LAST_INSERT_ID() |
| | | function is used in the |
| | | statement. |
+-----+--------------------------+---------------------------------+
|06 | LOAD_EVENT | Used for LOAD DATA INFILE in |
| | | MySQL 3.23. |
+-----+--------------------------+---------------------------------+
|07 | SLAVE_EVENT | Reserved for future use. |
+-----+--------------------------+---------------------------------+
|08 | CREATE_FILE_EVENT | Used for LOAD DATA INFILE |
| | | statements. This indicates the |
| | | start of execution of such a |
| | | statement. A temporary file is |
| | | created on the slave. Used in |
| | | MySQL 4 only. |
+-----+--------------------------+---------------------------------+
|09 | APPEND_BLOCK_EVENT | Contains data for use in a LOAD |
| | | DATA INFILE statement. The data |
| | | is stored in the temporary file |
| | | on the slave. |
+-----+--------------------------+---------------------------------+
|0a | EXEC_LOAD_EVENT | Used for LOAD DATA INFILE |
| | | statements. The contents of the |
| | | temporary file is stored in the |
| | | table on the slave. Used in |
| | | MySQL 4 only. |
+-----+--------------------------+---------------------------------+
|0b | DELETE_FILE_EVENT | Rollback of a LOAD DATA INFILE |
| | | statement. The temporary file |
| | | should be deleted on the slave. |
+-----+--------------------------+---------------------------------+
|0c | NEW_LOAD_EVENT | Used for LOAD DATA INFILE in |
| | | MySQL 4 and earlier. |
+-----+--------------------------+---------------------------------+
|0d | RAND_EVENT | Used to send information about |
| | | random values if the RAND() |
| | | function is used in the |
| | | statement. |
+-----+--------------------------+---------------------------------+
|0e | USER_VAR_EVENT | Used to replicate user |
| | | variables. |
+-----+--------------------------+---------------------------------+
|0f | FORMAT_DESCRIPTION_EVENT | This indicates the start of a |
| | | log file written by MySQL 5 or |
| | | later. |
+-----+--------------------------+---------------------------------+
|10 | XID_EVENT | Event indicating commit of an |
| | | XA transaction. |
+-----+--------------------------+---------------------------------+
|11 | BEGIN_LOAD_QUERY_EVENT | Used for LOAD DATA INFILE |
| | | statements in MySQL 5 and |
| | | later. |
+-----+--------------------------+---------------------------------+
|12 | EXECUTE_LOAD_QUERY_EVENT | Used for LOAD DATA INFILE |
| | | statements in MySQL 5 and |
| | | later. |
+-----+--------------------------+---------------------------------+
|13 | TABLE_MAP_EVENT | Information about a table |
| | | definition. Used in MySQL 5.1.5 |
| | | and later. |
+-----+--------------------------+---------------------------------+
|14 | PRE_GA_WRITE_ROWS_EVENT | Row data for a single table |
| | | that should be created. Used in |
| | | MySQL 5.1.5 to 5.1.17. |
+-----+--------------------------+---------------------------------+
|15 | PRE_GA_UPDATE_ROWS_EVENT | Row data for a single table |
| | | that needs to be updated. Used |
| | | in MySQL 5.1.5 to 5.1.17. |
+-----+--------------------------+---------------------------------+
|16 | PRE_GA_DELETE_ROWS_EVENT | Row data for a single table |
| | | that should be deleted. Used in |
| | | MySQL 5.1.5 to 5.1.17. |
+-----+--------------------------+---------------------------------+
|17 | WRITE_ROWS_EVENT | Row data for a single table |
| | | that should be created. Used in |
| | | MySQL 5.1.18 and later. |
+-----+--------------------------+---------------------------------+
|18 | UPDATE_ROWS_EVENT | Row data for a single table |
| | | that needs to be updated. Used |
| | | in MySQL 5.1.18 and later. |
+-----+--------------------------+---------------------------------+
|19 | DELETE_ROWS_EVENT | Row data for a single table |
| | | that should be deleted. Used in |
| | | MySQL 5.1.18 and later. |
+-----+--------------------------+---------------------------------+
|1a | INCIDENT_EVENT | Something out of the ordinary |
| | | happened. Added in MySQL |
| | | 5.1.18. |
+-----+--------------------------+---------------------------------+
o Master ID: The server ID of the master that created the event.
o Size: The size in bytes of the event.
o Master Pos: The position of the next event in the original master
log file.
o Flags: 16 flags. Currently, the following flags are used. The
others are reserved for future use.
+-----+-----------------------------+------------------------------+
|Flag | Name | Meaning |
+-----+-----------------------------+------------------------------+
|01 | LOG_EVENT_BINLOG_IN_USE_F | Log file correctly closed. |
| | | (Used only in |
| | | FORMAT_DESCRIPTION_EVENT.) |
| | | If this flag is set (if the |
| | | flags are, for example, '01 |
| | | 00') in a |
| | | FORMAT_DESCRIPTION_EVENT, |
| | | the log file has not been |
| | | properly closed. Most |
| | | probably this is because of |
| | | a master crash (for example, |
| | | due to power failure). |
+-----+-----------------------------+------------------------------+
|02 | | Reserved for future use. |
+-----+-----------------------------+------------------------------+
|04 | LOG_EVENT_THREAD_SPECIFIC_F | Set if the event is |
| | | dependent on the connection |
| | | it was executed in (for |
| | | example, '04 00'), for |
| | | example, if the event uses |
| | | temporary tables. |
+-----+-----------------------------+------------------------------+
|08 | LOG_EVENT_SUPPRESS_USE_F | Set in some circumstances |
| | | when the event is not |
| | | dependent on the default |
| | | database. |
+-----+-----------------------------+------------------------------+
MYSQLBINLOG ROW EVENT DISPLAY
The following examples illustrate how mysqlbinlog displays row events
that specify data modifications. These correspond to events with the
WRITE_ROWS_EVENT, UPDATE_ROWS_EVENT, and DELETE_ROWS_EVENT type codes.
The --base64-output=DECODE-ROWS and --verbose options may be used to
affect row event output. These options are available as of MySQL
5.1.28.
Suppose that the server is using row-based binary logging and that you
execute the following sequence of statements:
CREATE TABLE t
(
id INT NOT NULL,
name VARCHAR(20) NOT NULL,
date DATE NULL
) ENGINE = InnoDB;
START TRANSACTION;
INSERT INTO t VALUES(1, 'apple', NULL);
UPDATE t SET name = 'pear', date = '2009-01-01' WHERE id = 1;
DELETE FROM t WHERE id = 1;
COMMIT;
By default, mysqlbinlog displays row events encoded as base-64 strings
using BINLOG statements. Omitting extraneous lines, the output for the
row events produced by the preceding statement sequence looks like
this:
shell> mysqlbinlog log_file
...
# at 218
#080828 15:03:08 server id 1 end_log_pos 258 Write_rows: table id 17 flags: STMT_END_F
BINLOG '
fAS3SBMBAAAALAAAANoAAAAAABEAAAAAAAAABHRlc3QAAXQAAwMPCgIUAAQ=
fAS3SBcBAAAAKAAAAAIBAAAQABEAAAAAAAEAA//8AQAAAAVhcHBsZQ==
'/*!*/;
...
# at 302
#080828 15:03:08 server id 1 end_log_pos 356 Update_rows: table id 17 flags: STMT_END_F
BINLOG '
fAS3SBMBAAAALAAAAC4BAAAAABEAAAAAAAAABHRlc3QAAXQAAwMPCgIUAAQ=
fAS3SBgBAAAANgAAAGQBAAAQABEAAAAAAAEAA////AEAAAAFYXBwbGX4AQAAAARwZWFyIbIP
'/*!*/;
...
# at 400
#080828 15:03:08 server id 1 end_log_pos 442 Delete_rows: table id 17 flags: STMT_END_F
BINLOG '
fAS3SBMBAAAALAAAAJABAAAAABEAAAAAAAAABHRlc3QAAXQAAwMPCgIUAAQ=
fAS3SBkBAAAAKgAAALoBAAAQABEAAAAAAAEAA//4AQAAAARwZWFyIbIP
'/*!*/;
To see the row events as comments in the form of "pseudo-SQL"
statements, run mysqlbinlog with the --verbose or -v option. The output
will contain lines beginning with ###:
shell> mysqlbinlog -v log_file
...
# at 218
#080828 15:03:08 server id 1 end_log_pos 258 Write_rows: table id 17 flags: STMT_END_F
BINLOG '
fAS3SBMBAAAALAAAANoAAAAAABEAAAAAAAAABHRlc3QAAXQAAwMPCgIUAAQ=
fAS3SBcBAAAAKAAAAAIBAAAQABEAAAAAAAEAA//8AQAAAAVhcHBsZQ==
'/*!*/;
### INSERT INTO test.t
### SET
### @1=1
### @2='apple'
### @3=NULL
...
# at 302
#080828 15:03:08 server id 1 end_log_pos 356 Update_rows: table id 17 flags: STMT_END_F
BINLOG '
fAS3SBMBAAAALAAAAC4BAAAAABEAAAAAAAAABHRlc3QAAXQAAwMPCgIUAAQ=
fAS3SBgBAAAANgAAAGQBAAAQABEAAAAAAAEAA////AEAAAAFYXBwbGX4AQAAAARwZWFyIbIP
'/*!*/;
### UPDATE test.t
### WHERE
### @1=1
### @2='apple'
### @3=NULL
### SET
### @1=1
### @2='pear'
### @3='2009:01:01'
...
# at 400
#080828 15:03:08 server id 1 end_log_pos 442 Delete_rows: table id 17 flags: STMT_END_F
BINLOG '
fAS3SBMBAAAALAAAAJABAAAAABEAAAAAAAAABHRlc3QAAXQAAwMPCgIUAAQ=
fAS3SBkBAAAAKgAAALoBAAAQABEAAAAAAAEAA//4AQAAAARwZWFyIbIP
'/*!*/;
### DELETE FROM test.t
### WHERE
### @1=1
### @2='pear'
### @3='2009:01:01'
Specify --verbose or -v twice to also display data types and some
metadata for each column. The output will contain an additional comment
following each column change:
shell> mysqlbinlog -vv log_file
...
# at 218
#080828 15:03:08 server id 1 end_log_pos 258 Write_rows: table id 17 flags: STMT_END_F
BINLOG '
fAS3SBMBAAAALAAAANoAAAAAABEAAAAAAAAABHRlc3QAAXQAAwMPCgIUAAQ=
fAS3SBcBAAAAKAAAAAIBAAAQABEAAAAAAAEAA//8AQAAAAVhcHBsZQ==
'/*!*/;
### INSERT INTO test.t
### SET
### @1=1 /* INT meta=0 nullable=0 is_null=0 */
### @2='apple' /* VARSTRING(20) meta=20 nullable=0 is_null=0 */
### @3=NULL /* VARSTRING(20) meta=0 nullable=1 is_null=1 */
...
# at 302
#080828 15:03:08 server id 1 end_log_pos 356 Update_rows: table id 17 flags: STMT_END_F
BINLOG '
fAS3SBMBAAAALAAAAC4BAAAAABEAAAAAAAAABHRlc3QAAXQAAwMPCgIUAAQ=
fAS3SBgBAAAANgAAAGQBAAAQABEAAAAAAAEAA////AEAAAAFYXBwbGX4AQAAAARwZWFyIbIP
'/*!*/;
### UPDATE test.t
### WHERE
### @1=1 /* INT meta=0 nullable=0 is_null=0 */
### @2='apple' /* VARSTRING(20) meta=20 nullable=0 is_null=0 */
### @3=NULL /* VARSTRING(20) meta=0 nullable=1 is_null=1 */
### SET
### @1=1 /* INT meta=0 nullable=0 is_null=0 */
### @2='pear' /* VARSTRING(20) meta=20 nullable=0 is_null=0 */
### @3='2009:01:01' /* DATE meta=0 nullable=1 is_null=0 */
...
# at 400
#080828 15:03:08 server id 1 end_log_pos 442 Delete_rows: table id 17 flags: STMT_END_F
BINLOG '
fAS3SBMBAAAALAAAAJABAAAAABEAAAAAAAAABHRlc3QAAXQAAwMPCgIUAAQ=
fAS3SBkBAAAAKgAAALoBAAAQABEAAAAAAAEAA//4AQAAAARwZWFyIbIP
'/*!*/;
### DELETE FROM test.t
### WHERE
### @1=1 /* INT meta=0 nullable=0 is_null=0 */
### @2='pear' /* VARSTRING(20) meta=20 nullable=0 is_null=0 */
### @3='2009:01:01' /* DATE meta=0 nullable=1 is_null=0 */
You can tell mysqlbinlog to suppress the BINLOG statements for row
events by using the --base64-output=DECODE-ROWS option. This is similar
to --base64-output=NEVER but does not exit with an error if a row event
is found. The combination of --base64-output=DECODE-ROWS and --verbose
provides a convenient way to see row events only as SQL statements:
shell> mysqlbinlog -v --base64-output=DECODE-ROWS log_file
...
# at 218
#080828 15:03:08 server id 1 end_log_pos 258 Write_rows: table id 17 flags: STMT_END_F
### INSERT INTO test.t
### SET
### @1=1
### @2='apple'
### @3=NULL
...
# at 302
#080828 15:03:08 server id 1 end_log_pos 356 Update_rows: table id 17 flags: STMT_END_F
### UPDATE test.t
### WHERE
### @1=1
### @2='apple'
### @3=NULL
### SET
### @1=1
### @2='pear'
### @3='2009:01:01'
...
# at 400
#080828 15:03:08 server id 1 end_log_pos 442 Delete_rows: table id 17 flags: STMT_END_F
### DELETE FROM test.t
### WHERE
### @1=1
### @2='pear'
### @3='2009:01:01'
Note
You should not suppress BINLOG statements if you intend to
re-execute mysqlbinlog output.
The SQL statements produced by --verbose for row events are much more
readable than the corresponding BINLOG statements. However, they do not
correspond exactly to the original SQL statements that generated the
events. The following limitations apply:
o The original column names are lost and replaced by @N, where N is a
column number.
o Character set information is not available in the binary log, which
affects string column display:
o There is no distinction made between corresponding binary and
nonbinary string types (BINARY and CHAR, VARBINARY and VARCHAR,
BLOB and TEXT). The output uses a data type of STRING for
fixed-length strings and VARSTRING for variable-length strings.
o For multi-byte character sets, the maximum number of bytes per
character is not present in the binary log, so the length for
string types is displayed in bytes rather than in characters.
For example, STRING(4) will be used as the data type for values
from either of these column types:
CHAR(4) CHARACTER SET latin1
CHAR(2) CHARACTER SET ucs2
o Due to the storage format for events of type UPDATE_ROWS_EVENT,
UPDATE statements are displayed with the WHERE clause preceding
the SET clause.
Proper interpretation of row events requires the information from the
format description event at the beginning of the binary log. Because
mysqlbinlog does not know in advance whether the rest of the log
contains row events, by default it displays the format description
event using a BINLOG statement in the initial part of the output.
If the binary log is known not to contain any events requiring a BINLOG
statement (that is, no row events), the --base64-output=NEVER option
can be used to prevent this header from being written.
COPYRIGHT
Copyright 2007-2008 MySQL AB, 2008-2010 Sun Microsystems, Inc.
This documentation is free software; you can redistribute it and/or
modify it only under the terms of the GNU General Public License as
published by the Free Software Foundation; version 2 of the License.
This documentation is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License along
with the program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA or see
http://www.gnu.org/licenses/.
NOTES
1. Bug#42941
http://bugs.mysql.com/bug.php?id=42941
SEE ALSO
For more information, please refer to the MySQL Reference Manual, which
may already be installed locally and which is also available online at
http://dev.mysql.com/doc/.
AUTHOR
Sun Microsystems, Inc. (http://www.mysql.com/).
MySQL 5.1 04/06/2010 MYSQLBINLOG(1)
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