When the mysql PRIMARY key is set to auto_increment, the PRIMARY key repeat Duplicate entry 'xxx' for key 'Primary ', duplicateentry occurs during the concurrent performance test.
When the mysql PRIMARY key is set to auto_increment, the PRIMARY key
Primary key repeat duplicate entry ' xxx ' for key ' PRIMARY ' when MySQL primary key is set to Auto_increment, concurrency performance test occursWorkaround:Add settings to the [mysqld] fragment in My.cnf innodb_autoinc_lock_mode=0Also pay
Recently has been tossing VPS, just encountered in the process of moving WordPress Import database. Ran into
#1062 –duplicate entry ' 1′for key ' PRIMARY '
At that time the urgent ah, the original data I have all deleted, there is no way only to
Os:centos 6.3db:5.5.14Test Create Yoon Test table, no primary key, no index, the underlying data content is as follows:Mysql> select * from Yoon;+----+----------+------+| ID | name | user |+----+----------+------+| 1 | \ "" ##!aa | NULL || 2 | Z2 |
Problem Source: Duplicate entry ' 0 ' for key ' PRIMARY ' error occurred while updating the IDs for all records in the datasheet.
Because the same table contains data stored by different users, different foreign keys.
An error occurred while
Duplicate entry... for key... cause of error: this error occurs because the unique value of the primary key is repeated. This error is reported once the unique value of the primary key is repeated during database modification and insertion, if
I changed the int type of id to bigint. In fact, it may be better to change it back. An error may occur during database backup.
This problem occurs during the testing of the developed website background system:Invalid Query: Duplicate entry '000000'
This problem occurs during the testing of the developed website background system:Invalid Query: Duplicate entry '000000' for key 1SQL is: INSERT INTO 'kq _ new' ('title', 'autor', 'type', 'content', 'isdel', 'adate', 'range ', 'lang ') values
When everything is normal at the end of entity, the unit test still encountered the following problems:
Oracle. toplink. Essentials. Exceptions. databaseexception internal exception: COM. MySQL. JDBC. Exceptions.
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