windows下mysql默认是不区分大小写的，但是linux会区分大小写，所以当执行的sql语句有大小写区别时需要注意。

那么怎么设置mysql不区分大小写。

1.windows下

到安装mysql的目录，修改my.ini文件

在文件最后一行加上下面一句话

lower_case_table_names=1

lower_case_table_names = 1说明 0：区分大小写，1：不区分大小写

效果如下

[mysqld]

port = 3306  basedir=F:/mysql-5.7.21-winx64

datadir=F:/mysql-5.7.21-winx64/data

max_connections=200  character-set-server=utf8

default-storage-engine=INNODB  sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES

[mysql]

default-character-set=utf8  lower_case_table_names=1

重启mysql

2.linux下

进入etc下面

cd /etc/

编辑my.cnf文件

vi my.cnf

最后一行加上下面一句

lower_case_table_names=1

效果如下

# For advice on how to change settings please see

# http://dev.mysql.com/doc/refman/5.7/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

#

# 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

datadir=/var/lib/mysql

socket=/var/lib/mysql/mysql.sock

# Disabling symbolic-links is recommended to prevent assorted security risks

symbolic-links=0log-error=/var/log/mysqld.log

pid-file=/var/run/mysqld/mysqld.pidlower_case_table_names=1

重启mysql：

systemctl restart mysqld