MySQL table name area in Linux is not case sensitive

linux in mysql The table name area is not case sensitive

This article mainly introduces linux in mysql The table name area is not case sensitive , The content is detailed and easy to understand , The operation is simple and fast , It has certain reference value , I believe that after reading this article linux in mysql The table name area is not case sensitive, and articles will gain , Let's have a look .

linux in mysql Table names are case sensitive ;mysql Database name of 、 Table name 、 Variable names and table aliases are in linux Are strictly case sensitive , Column names and column aliases ignore case in all cases , You can modify MySQL In the configuration file of “ower_case_table_names” Parameter to set whether it is case sensitive .

The operating environment of this tutorial ：linux7.3 System 、mysql8.0.22 edition 、Dell G3 The computer .

linux in mysql Are table names case sensitive

linux in ,mysql After installation , Table names are case sensitive by default , And this attribute cannot be modified , What is said on the Internet /etc/mysql/my.cnf The configuration of adding fields in cannot take effect , Modification will cause mysql Can't start .

mysql stay linux Table names in are case sensitive ,mysql stay Windows Table names in are not case sensitive ; Can be in MySQL Configuration file for “my.ini [mysqld]” Add a line to the list “ower_case_table_names = Parameters ” To set whether it is case sensitive .

MySQL stay Linux Next database name 、 Table name 、 Name 、 This is the case rule for aliases ：

• Database and table names are strictly case sensitive ;

• Table aliases are strictly case sensitive ;

• Column names and column aliases are case insensitive in all cases ;

• Variable names are also strictly case sensitive ;

MySQL stay Windows It's not case sensitive .

So in order to make the program and database run normally in different operating systems , The best way is to turn it into lowercase when designing , But if the case has been normalized at design time , So in Windows Environment, as long as the configuration of the database to make changes on the line ,

The specific operation is as follows ：

stay MySQL In the configuration file my.ini [mysqld] Add a line to the list ower_case_table_names = 1

Parameter interpretation ：

• 0： Case sensitive

• 1： Case insensitive

stay MySQL in , Database and table pairs are related to the directories and files under those directories .

thus , The sensitivity of the operating system determines the case sensitivity of database and table naming . This means that the database and table names are in the Windows Is case insensitive , And in most types of Unix The system is case sensitive .

Column names and column aliases are case insensitive in all cases , The alias of a table is case sensitive . To avoid this problem , You'd better use the combination of lowercase letters and underscores when defining database naming rules , Without using any capital letters . Or it can be forced to -O lower_case_table_names=1 Parameter startup

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