MySQL 5.6中的sql_mode默认设置问题
2013-09-25 22:40
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编译并配置完MySQL5.6版本,导入之前在MySQL5.5中正常运行的数据库却发生错误,原来从MySQL5.6版本开始,在执行mysql_install_db命令时(该命令一般在编译完mysql后运行并对数据库进行初始配置)会将默认的一个my.cnf文件写入到安装路径中(CentOS下默认安装路径为/usr/local/mysql/),其包含的信息如下:
上面的sql_mode中包含有STRICT_TRANS_TABLES,这就是导致文章开头所述问题发生的原因。在将sql_mode一行注释后重新启动mysql服务一切恢复正常。
# For advice on how to change settings please see # http://dev.mysql.com/doc/refman/5.6/en/server-configuration-defaults.html [mysqld] # Remove leading # and set to the amount of RAM for the most important data # cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%. # innodb_buffer_pool_size = 128M # Remove leading # to turn on a very important data integrity option: logging # changes to the binary log between backups. # log_bin # These are commonly set, remove the # and set as required. # basedir = ..... # datadir = ..... # port = ..... # server_id = ..... # socket = ..... # Remove leading # to set options mainly useful for reporting servers. # The server defaults are faster for transactions and fast SELECTs. # Adjust sizes as needed, experiment to find the optimal values. # join_buffer_size = 128M # sort_buffer_size = 2M # read_rnd_buffer_size = 2M # 作者按: 见这里的配置 sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
上面的sql_mode中包含有STRICT_TRANS_TABLES,这就是导致文章开头所述问题发生的原因。在将sql_mode一行注释后重新启动mysql服务一切恢复正常。
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