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Different lower_case_table_names settings for server ('1') and data dictionary ('0') solution
2022-07-30 05:55:00 【bluepad】
Problem Scenario
When using the Lowy framework, the database table cannot be found.The conclusion is that mysql is case sensitive.
lower_case_table_names parameter
The official original words, simply put, the default for unix is 0, the default for windows is 1, and the default for mac is 2.
0 is case-sensitive, 1 is insensitive, that is, Windows is case-insensitive by default.
On Unix, the default value of lower_case_table_names is 0. On Windows, the default value is 1. On macOS, the default value is 2.
Problem Resolution
I have read a lot of information, all of which say that configuring lower_case_table_names=1 in the configuration file, restarting the service can solve the problem.
Later, after I checked the official mysql documentation, I found that this solution is only valid in mysql with versions lower than 5.6/5.7.
But it doesn't work under version 8.0, even how to do lower_case_table_names variable is not updated.
A new note added to the official mysql8.0 version
lower_case_table_names can only be configured when initializing the server. Changing the lower_case_table_names setting after the server is initialized is prohibited.
Translation:
LOWER_CASE_TABLE_NAMES can only be configured when initializing the server.Disallow changing the LOWER_CASE_TABLE_NAMES setting after server initialization.
In other words, in version 8.0, your mysql has been initialized and does not support modifying the lower_case_table_names parameter!!
If you are on version 8, it is recommended that you reinstall directly.
Add lower_case_table_names=1 to my.cnf (maybe different names) file
You need to specify lower_case_table_names=1 parameter during initialization
This is the most reliable reinstallation tutorial I found: https://blog.csdn.net/qq_37598011/article/details/93489404
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