这篇文章主要介绍了mysql误删除表内数据怎么办，具有一定借鉴价值，感兴趣的朋友可以参考下，希望大家阅读完这篇文章之后大有收获，下面让小编带着大家一起了解一下。
#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)
#删除数据
mysql> delete from testdb1.student;
Query OK, 8 rows affected (0.00 sec)
mysql> commit;
Query OK, 0 rows affected (0.00 sec)
mysql> show master status\G
*************************** 1. row ***************************
File: ray-bin.000004
Position: 5444
Binlog_Do_DB:
Binlog_Ignore_DB:
Executed_Gtid_Set:
1 row in set (0.00 sec)
[root@localhost ~]# mysqlbinlog /data/3306/logs/ray-bin.000004 -v -v -S /data/3306/soket/mysql.sock --base64-output=decode-rows | sed -n '/### DELETE FROM `testdb1`.`student`/,/COMMIT/P' | sed -n 's\### \\p' | sed "s/\/\*.*\*\///g" | sed 's/`//g' > /tmp/1.txt
[root@localhost ~]# sed 's/DELETE FROM/insert into/g' /tmp/1.txt | sed 's/WHERE/select/g' | sed 's/@4.*/\0;/g' | sed 's/@[1-3].*/\0,/g' | sed 's/[^@]\(.*\)=//g' > execSQL.sql
要点：
sed 's/@4.*/\0;/g' 把@4后面匹配所有字符所有长度，替换，在匹配的后面添加。\0代表整行;
sed 's/@[1-3].*/\0,/g' 把@后面从1到3匹配，在匹配后面所有字符所有长度，在匹配项后面添加逗号。\0代表整行。
sed 's/[^@]\(.*\)=//g' 把已@开头的到=以内的内容替换
mysql> source /root/execSQL.sql
Query OK, 1 row affected (0.00 sec)
Records: 1 Duplicates: 0 Warnings: 0
Query OK, 1 row affected (0.00 sec)
Records: 1 Duplicates: 0 Warnings: 0
Query OK, 1 row affected (0.00 sec)
Records: 1 Duplicates: 0 Warnings: 0
Query OK, 1 row affected (0.00 sec)
Records: 1 Duplicates: 0 Warnings: 0
Query OK, 1 row affected (0.00 sec)
Records: 1 Duplicates: 0 Warnings: 0
Query OK, 1 row affected (0.00 sec)
Records: 1 Duplicates: 0 Warnings: 0
Query OK, 1 row affected (0.00 sec)
Records: 1 Duplicates: 0 Warnings: 0
Query OK, 1 row affected (0.00 sec)
Records: 1 Duplicates: 0 Warnings: 0
mysql> commit;
Query OK, 0 rows affected (0.01 sec)
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)
由 dawei
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