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    MySQL 大小写敏感_MySQL

    2016-05-31 08:47:15原创507
    bitsCN.com

    mysqld

    lower_case_table_names=1

    --------------------------------------------------------

    http://blog.csdn.net/waterxcfg304/article/details/36665031

    Linux上安装MySQL默认是数据库的表大小写敏感的。修改很简单,只要该一个mysql的配置文件就可以了。

    mysql> show tables;
    +--------------------------------------+
    | Tables_in_cddl |
    +--------------------------------------+
    | a1_equipment |
    | a1_equipment_batch |
    | actionby |
    | actionitem |
    | actionitemcomments |
    | actionitemdetail |
    | actionitemstatus |
    | cal_cost_element |
    | cal_cost_element_stat |
    | cal_statistics |
    | changeduedate |
    | commisstionstartup |
    | copq |
    | copq_category |
    | costbreakdown |
    | daily_statistic |
    | dbstudy |
    | dccddlist |
    | define_cost_element |
    | djpmomsactivity |
    | drawing |
    | dsystem_user |
    | dtproperties |
    | duser_rights |
    | edcr |
    | edcr_2week |
    | edcr_status |
    | edcrchild |
    | engineering_action_tracking |
    | engineering_action_tracking_analysis |
    | fincostone |
    | fincostonerpt |
    | fincosttwo |
    | fincosttworpt |
    | fincostvariance |
    | fincostvariancerpt |
    | findataforchar |
    | finemployee |
    | finemployee20120910 |
    | finemployeehist |
    | finemployeehistback |
    | finexportone |
    | finexporttwo |
    | finheadcountone |
    | finheadcountonerpt |
    | finheadcounttwo |
    | finheadcounttworpt |
    | finheadcountvariance |
    | finheadcountvariancerpt |
    | finhistversioncomment |
    | finposition |
    | finpositionhist |
    | finpositionhistback |
    | finpositon20120910 |
    | flight |
    | hotel |
    | hrcontact |
    | hy_temp |
    | hyresponsetime |
    | impacteddrawingnumber |
    | jpmo_temp |
    | jpmoresponsetime |
    | meeting |
    | relatededcrnumber |
    | responsibleperson |
    | revisedscheduledate |
    | sm_temp |
    | smresponsetime |
    | sparepart |
    | sysconstraints |
    | syssegments |
    | systemparameter |
    | table_1_7_1 |
    | table_1_7_2 |
    | table_1_7_3 |
    | table_1_7_3a |
    | table_1_7_3b |
    | table_1_7_3c |
    | table_appendix28 |
    | trend |
    | trenddetail |
    | visitor |
    | visitprogram |
    | vp_engdeliverablesreport |
    +--------------------------------------+
    84 rows in set (0.00 sec)

    mysql> select count(*) from TREND;
    ERROR 1146 (42S02): Table 'cddl.TREND' doesn't exist

    从上面可以看出trend表是存在的,只不过是小写的保存在数据库里。

    让MYSQL不区分表名大小写的方法其实很简单:

    1.用ROOT登录,修改/etc/my.cnf

    2.在[mysqld]下加入一行:lower_case_table_names=1

    3.重新启动数据库即可

    [root@chicago init.d]# vi /etc/my.cnf
    [mysqld]
    datadir=/var/lib/mysql
    socket=/var/lib/mysql/mysql.sock
    skip-grant-tables
    lower_case_table_names=1

    [root@chicago init.d]# service mysql restart
    Shutting down MySQL.. [ OK ]
    Starting MySQL...................................... [ OK ]

    mysql> select count(*) from TREND;
    +----------+
    | count(*) |
    +----------+
    | 19 |
    +----------+
    1 row in set (0.00 sec)

    mysql> select count(*) from trend;
    +----------+
    | count(*) |
    +----------+
    | 19 |
    +----------+
    1 row in set (0.00 sec)

    从上面可以看出,此时已经不区分大小写了。


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