tencent cloud


Failure to Enable Case Insensitivity

Last updated: 2022-04-13 11:10:35

    Issue Description

    Failed to enable case insensitivity. An error was reported as follows:


    If the database version is 8.0, you can only choose whether to enable case sensitivity for table names when creating an instance on the purchase page. You cannot modify the lower_case_table_names parameter after creating the instance.

    Common Causes

    Database or table names contain uppercase letters.


    Check whether all of the database and table names of the instance are lowercase, convert uppercase names (if any) to lowercase ones, and modify the lower_case_table_names parameter.


    Modifying lower_case_table_names will cause the database restart.

    • Check if there are uppercase table names

      select table_schema,table_name from information_schema.tables where   table_schema not in("mysql","information_schema") and (md5(table_name)<>md5(lower(table_name)) or md5(table_schema)<>md5(lower(table_schema)));
    • Check if there are uppercase database names

      select SCHEMA_NAME from information_schema.SCHEMATA where md5(SCHEMA_NAME)<>md5(lower(SCHEMA_NAME));
    Contact Us

    Contact our sales team or business advisors to help your business.

    Technical Support

    Open a ticket if you're looking for further assistance. Our Ticket is 7x24 avaliable.

    7x24 Phone Support