#添加数据
insert into testdb1.student(id,name,class,score) value(a,'a',1,45),(2,'b',1,46),(3,'c',2,89),(4,'d',2,90),(5,'e',3,67),(6,'f',3,87),(7,'g',4,77),(8,'h',4,91);
mysql> select * from testdb1.student;
+------+------+-------+-------+
| id | name | class | score |
+------+------+-------+-------+
| 1 | a | 1 | 45 |
| 2 | b | 1 | 46 |
| 3 | c | 2 | 89 |
| 4 | d | 2 | 90 |
| 5 | e | 3 | 67 |
| 6 | f | 3 | 87 |
| 7 | g | 4 | 77 |
| 8 | h | 4 | 91 |
+------+------+-------+-------+
8 rows in set (0.00 sec)
#修改数据
update student set score=100;
commit;
mysql> select * from testdb1.student;
+------+------+-------+-------+
| id | name | class | score |
+------+------+-------+-------+
| 1 | a | 1 | 100 |
| 2 | b | 1 | 100 |
| 3 | c | 2 | 100 |
| 4 | d | 2 | 100 |
| 5 | e | 3 | 100 |
| 6 | f | 3 | 100 |
| 7 | g | 4 | 100 |
| 8 | h | 4 | 100 |
+------+------+-------+-------+
8 rows in set (0.00 sec)
mysql> set global read_only=1
mysql> show master status\G
*************************** 1. row ***************************
File: ray-bin.000004
Position: 1992
Binlog_Do_DB:
Binlog_Ignore_DB:
Executed_Gtid_Set:
1 row in set (0.00 sec)
# at 2192是在binlog日志中查到的
[root@localhost ~]# mysqlbinlog /data/3306/logs/ray-bin.000004 -v -v -S /data/3306/soket/mysql.sock --base64-output=decode-rows | grep -A 15 student | sed -n '/# at 2192/,/COMMIT/p'| sed -n 's\### \\p' | sed "s/\/\*.*\*\///g" | sed 's/`//g'> /tmp/1.txt
[root@localhost ~]# cat /tmp/1.txt
|
UPDATE testdb1.student
WHERE
@1=1
@2='a'
@3='1'
@4=45
SET
@1=1
@2='a'
@3='1'
@4=100
UPDATE testdb1.student
WHERE
@1=2
@2='b'
@3='1'
@4=46
SET
@1=2
@2='b'
@3='1'
@4=100
UPDATE testdb1.student
WHERE
@1=3
@2='c'
@3='2'
@4=89
SET
@1=3
@2='c'
@3='2'
@4=100
UPDATE testdb1.student
WHERE
@1=4
@2='d'
@3='2'
@4=90
SET
@1=4
@2='d'
@3='2'
@4=100
UPDATE testdb1.student
WHERE
@1=5
@2='e'
@3='3'
@4=67
SET
@1=5
@2='e'
@3='3'
@4=100
UPDATE testdb1.student
WHERE
@1=6
@2='f'
@3='3'
@4=87
SET
@1=6
@2='f'
@3='3'
@4=100
UPDATE testdb1.student
WHERE
@1=7
@2='g'
@3='4'
@4=77
SET
@1=7
@2='g'
@3='4'
@4=100
UPDATE testdb1.student
WHERE
@1=8
@2='h'
@3='4'
@4=91
SET
@1=8
@2='h'
@3='4'
@4=100
|
[root@localhost ~]# cat column.txt
id
name
class
score
[root@localhost ~]# cat getSQL.sh
|
#!/bin/bash
# by ray
iswhere=1 #判断循环的行的位置，1表示在where后，0表示不再where后
colNum=0 #计算列数，一般在binlog日志内第一列为@1,第二列为@2一次类推
whereNum=0 #判断where后面字段出现的次数，便于拼接字符串，第一次出现不适用都会，第二次以后使用逗号拼接
setNum=0 #判断set后面字段出现的次数，便于拼接字符串，第一次出现不适用都会，第二次以后使用逗号拼接
replaceColumn(){ #把@开头的列替换为列配置文件内的列，安配置文件的顺序执行
cat $1 | while read line
do
colNum=$[${colNum}+1]
sed -i "s/@${colNum}/${line}/g" ./execSQL.sql #替换列
done
}
getSQL(){ #获取sql
sql1=''
sql_result=''
sql_condition=''
while read line #读取处理过的binlog日志
do
if [[ ${line} =~ 'UPDATE' ]];then #匹配是否update
if [ "${sql1}" != "" ];then
echo ${sql1}' '${sql_result}' '${sql_condition}';' >> ./execSQL.sql #打印sql
sql1=''
sql_result=''
sql_condition=''
whereNum=0
setNum=0
fi
sql1=${line} #拼接sql字符串，获取update
elif [[ ${line} =~ 'WHERE' ]];then
sql_condition=${line} #拼接字符串，把binlog日志内where后面内容
iswhere=1 #判断是否为where，因为要把where和set后面的内容互换
elif [[ ${line} =~ 'SET' ]];then
sql_result=' SET '${sql_result} #拼接字符串
iswhere=0
elif [[ ${iswhere} -eq 1 ]];then #1为where后面，把binlog日志where后面的内容拼接到sql的set后
if [[ ${whereNum} -eq 0 ]];then #判断where字符串后的字符串是否一次出现
sql_result=${sql_result}' '${line}
whereNum=1 #设置为1，表示不是第一次出现
elif [[ ${whereNum} -eq 1 ]];then
sql_result=${sql_result}', '${line}
fi
elif [[ ${iswhere} -eq 0 ]];then #判断是否为set后面的字符串
if [[ ${setNum} -eq 0 ]];then #判断set字符串后的字符串是否一次出现
sql_condition=${sql_condition}' '${line}
setNum=1 #设置为1，表示不是第一次出现
elif [[ ${setNum} -eq 1 ]];then
sql_condition=${sql_condition}' and '${line}
fi
fi
done < $1 #把文件用while循环读取每一行
echo ${sql1}' '${sql_result}' '${sql_condition}';' >> ./execSQL.sql #最后一行退出循环，所以要打印最后一行
echo "commit;" >> ./execSQL.sql
replaceColumn $2
}
#脚本的入口，调用函数获取内容
if [ -e $1 ];then #判断第一个参数是否为文件
getSQL $1 $2
else
echo $1' is not a file!!'
fi
|
[root@localhost ~]# bash getSQL.sh '/tmp/1.txt' "./column.txt"
mysql> select * from testdb1.student;
+------+------+-------+-------+
| id | name | class | score |
+------+------+-------+-------+
| 1 | a | 1 | 100 |
| 2 | b | 1 | 100 |
| 3 | c | 2 | 100 |
| 4 | d | 2 | 100 |
| 5 | e | 3 | 100 |
| 6 | f | 3 | 100 |
| 7 | g | 4 | 100 |
| 8 | h | 4 | 100 |
+------+------+-------+-------+
8 rows in set (0.00 sec)
[root@localhost ~]# mysql -uroot -p123456 -S /data/3306/soket/mysql.sock < /root/execSQL.sql
mysql: [Warning] Using a password on the command line interface can be insecure.
mysql> select * from testdb1.student;
+------+------+-------+-------+
| id | name | class | score |
+------+------+-------+-------+
| 1 | a | 1 | 45 |
| 2 | b | 1 | 46 |
| 3 | c | 2 | 89 |
| 4 | d | 2 | 90 |
| 5 | e | 3 | 67 |
| 6 | f | 3 | 87 |
| 7 | g | 4 | 77 |
| 8 | h | 4 | 91 |
+------+------+-------+-------+
8 rows in set (0.00 sec)
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/29734436/viewspace-2152513/ ，如需转载，请注明出处，否则将追究法律责任。
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