MySQL converts some table names to uppercase

One 、 Execute the following command （wen51 Name your database , Just change here , Nothing else needs to be changed ）, Get the capitalization conversion of all table names in this database SQL sentence .

SELECT
 concat('alter table ', TABLE_NAME , ' rename to ' , upper(TABLE_NAME) ,' ;' ) 
FROM information_schema.TABLES 
WHERE  TABLE_SCHEMA = 'wen51';

Two 、 Change your table name to upper case SQL Statements from “ result 1” It's copied out of , It can be executed together .

3、 ... and 、 Step on the pit diary

alter table  Original table name  rename to  The new name of the table ;

for example ：

alter table sys_area rename to sys_area1;

There is nothing wrong with execution ！
however ！！！

ALTER TABLE act_app_deployment RENAME TO UPPER('act_app_deployment');

Will always report a mistake 1064 error ！！！
UPPER The usage function ：

In short ：UPPER Must be used in SELECT Back , It is only used to display the results ！！！