Why Are My MySQL Table Names Case-Sensitive on One Server But Not Another?

Understanding Case Sensitivity for MySQL Table Names

In MySQL, the case sensitivity of table names depends on the underlying operating system. Generally:

• Windows: Case insensitive
• Unix-based systems: Case sensitive

Implementation on Different Servers

The issue you encountered stems from the differing case sensitivity on your development and test servers.

• Development Machine (Windows): lowercase table names are accessible due to case insensitivity.
• Test Server (Ubuntu): table names are case sensitive and must be queried with uppercase letters.

Configuration Option in MySQL

MySQL provides a configuration option, lower_case_table_names, that allows control over the case sensitivity of table names stored on disk. By default, this variable is set to 0, meaning case sensitivity is determined by the operating system.

Setting lower_case_table_names to 1 forces all table names to be stored in lowercase on disk, allowing for case-insensitive querying on any type of operating system. However, this may break existing references to tables that rely on specific casing.

Additional Information

For further details, refer to the MySQL documentation section on Identifier Case Sensitivity.

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