我有mysql数据库表名为＆＃34; radacct＆＃34;其中包含2016-01-01（1月）至2016-06-29（6月）的数据。由于某种原因，2016-06-20至2016-06-25的数据将丢失。我有bin-log enabled因此我使用了＆＃34; mysqlbinlog＆＃34;要将bin文件导出到.sql文件，这些sql文件包含Jan，Feb，March的旧数据以及2016-06-20到2016-06-25丢失的数据。如何在不丢失当前数据的情况下恢复丢失的数据。
我正在考虑选择包含缺失数据的.sql文件（我使用日期字段来标识缺失的数据）并将INSERT INTO替换为REPLACE INTO。
继承人sql文件的样子
#160622 15:06:47 server id 1 end_log_pos 1073739089 Query thread_id=235 exec_time=0 error_code=0
SET TIMESTAMP=1466622407/*!*/;
UPDATE radacct SET acctstoptime = '2016-06-23 00:51:55', acctsessiontime = '1', acctinputoctets = '0' << 32 | '0', acctoutputoctets = '0' << 32 | '0', acctterminatecause = 'User-Error', acctstopdelay = '0', connectinfo_stop = '' WHERE acctsessionid = '172784299' AND username = 'fusernamehighlands' AND nasipaddress = '11.11.11.234'
/*!*/;
# at 1073739089
#160622 15:06:47 server id 1 end_log_pos 1073739162 Query thread_id=235 exec_time=0 error_code=0
SET TIMESTAMP=1466622407/*!*/;
COMMIT
/*!*/;
# at 1073739162
#160622 15:06:47 server id 1 end_log_pos 1073739234 Query thread_id=238 exec_time=0 error_code=0
SET TIMESTAMP=1466622407/*!*/;
BEGIN
/*!*/;
# at 1073739234
#160622 15:06:47 server id 1 end_log_pos 1073739262 Intvar
SET INSERT_ID=264950750/*!*/;
# at 1073739262
#160622 15:06:47 server id 1 end_log_pos 1073740354 Query thread_id=238 exec_time=0 error_code=0
SET TIMESTAMP=1466622407/*!*/;
INSERT INTO radacct (acctsessionid, acctuniqueid, username, realm, nasipaddress, nasportid, nasporttype, acctstarttime, acctstoptime, acctsessiontime, acctauthentic, connectinfo_start, connectinfo_stop, acctinputoctets, acctoutputoctets, calledstationid, callingstationid, acctterminatecause, servicetype, framedprotocol, framedipaddress, acctstartdelay, acctstopdelay) VALUES ('172784282', '984f06cc1b00ee56', 'fusernamepranish', '', '11.11.11.234', '297796676', 'Ethernet', DATE_SUB('2016-06-23 00:51:55', INTERVAL (1 + 0) SECOND), '2016-06-23 00:51:55', '1', 'RADIUS', '', '', '0' << 32 | '0', '0' << 32 | '0', '', 'a8:32:9a:00:c3:17', 'User-Error', 'Framed-User', 'PPP', '', '0', '0')
/*!*/;
# at 1073740354
#160622 15:06:47 server id 1 end_log_pos 1073740381 Xid = 8589937
COMMIT/*!*/;
# at 1073740381
#160622 15:06:47 server id 1 end_log_pos 1073740453 Query thread_id=239 exec_time=0 error_code=0
SET TIMESTAMP=1466622407/*!*/;
BEGIN
/*!*/;
# at 1073740453
#160622 15:06:47 server id 1 end_log_pos 1073740481 Intvar
SET INSERT_ID=264950749/*!*/;
# at 1073740481
#160622 15:06:47 server id 1 end_log_pos 1073741574 Query thread_id=239 exec_time=0 error_code=0
SET TIMESTAMP=1466622407/*!*/;
INSERT INTO radacct (acctsessionid, acctuniqueid, username, realm, nasipaddress, nasportid, nasporttype, acctstarttime, acctstoptime, acctsessiontime, acctauthentic, connectinfo_start, connectinfo_stop, acctinputoctets, acctoutputoctets, calledstationid, callingstationid, acctterminatecause, servicetype, framedprotocol, framedipaddress, acctstartdelay, acctstopdelay) VALUES ('172784297', '1afbaf4540c44f65', 'wusernamebadri158', '', '11.11.11.234', '297796655', 'Ethernet', DATE_SUB('2016-06-23 00:51:55', INTERVAL (1 + 0) SECOND), '2016-06-23 00:51:55', '1', 'RADIUS', '', '', '0' << 32 | '0', '0' << 32 | '0', '', '44:d9:e7:0c:a7:7e', 'User-Error', 'Framed-User', 'PPP', '', '0', '0')
/*!*/;
# at 1073741574
#160622 15:06:47 server id 1 end_log_pos 1073741601 Xid = 8589935
COMMIT/*!*/;
# at 1073741601
#160622 15:06:47 server id 1 end_log_pos 1073741673 Query thread_id=233 exec_time=0 error_code=0
SET TIMESTAMP=1466622407/*!*/;
BEGIN
/*!*/;
# at 1073741673
#160622 15:06:47 server id 1 end_log_pos 1073742164 Query thread_id=233 exec_time=0 error_code=0
SET TIMESTAMP=1466622407/*!*/;
UPDATE radacct SET framedipaddress = '10.4.72.235', acctsessiontime = '0', acctinputoctets = '0' << 32 | '0', acctoutputoctets = '0' << 32 | '0' WHERE acctsessionid = '172784288' AND username = 'btwamrit' AND nasipaddress = '11.11.11.234'
/*!*/;
# at 1073742164
#160622 15:06:47 server id 1 end_log_pos 1073742191 Xid = 8589941
COMMIT/*!*/;
# at 1073742191
#160622 15:06:47 server id 1 end_log_pos 1073742234 Rotate to mysql-bin.000003 pos: 4
DELIMITER ;
# End of log file
ROLLBACK /* added by mysqlbinlog */;
/*!50003 SET COMPLETION_TYPE=@OLD_COMPLETION_TYPE*/;
答案 0 :(得分：2)
您可以使用mysqlbinlog --start-datetime="2016-01-01 00:00:00" --stop-datetime="2016-06-29 23:59:59" <log file> > <sql file path>
答案 1 :(得分：0)
我无法使用二进制日志恢复已删除表的数据[data from specific days of the month eg. day 11,12,13]，但学习了有用的步骤，这些步骤在可能的数据库故障期间可能很有用。
The MariaDB server's binary log is a set of files containing "events"
which represent modifications to the contents of a MariaDB database.
These events are written in a binary (i.e. non-human-readable) format.
The mysqlbinlog utility is used to view these events in plain text.
Note: binary logging should be enabled on mysql server. to enable it edit my.cnf file and under "[mysqld]" section
[mysqld]
....
log-bin
....
重启mysql服务。现在你将在/ var / lib / mysql目录中创建mysql二进制日志文件
For example if there are few binlog files like
ls -1 /var/lib/mysql
mysql-bin.000051
mysql-bin.000052
mysql-bin.000053
mysql-bin.000054
the sql file can be generated for those bin files and then later be imported into database
mysqlbinlog mariadb-bin.000051 > /tmp/mariadb-bin51.sql
mysqlbinlog mariadb-bin.000052 > /tmp/mariadb-bin51.sql
...
OR
for i in `seq 51 58`;do mysqlbinlog mysql-bin.0000${i} > ${i}-log.sql ; sleep 1 ;done