![]() Column, index, stored routine, event names, and column aliases aren’t case sensitive on either platform.įor more information, see Identifier Case Sensitivity in the MySQL documentation. You can turn off table name case sensitivity in MySQL by setting the parameter lower_case_table_names to 1. MySQL will look for objects names in with the exact case sensitivity as written in the query. To make this search case sensitive, make sure that one of the operands has a case sensitive or binary collation. The following command creates a table named employees in lowercase. Examplesįor example, to create a table named EMPLOYEES in uppercase in MySQL, you should use the following: CREATE TABLE EMPLOYEES ( ![]() In most cases, you’ll want to use AWS Database Migration Service transformations to change schema, table, and column names to lowercase. Read replicas should always use the same lower_case_table_names parameter value as the source DB instance.īy default, object names are being stored in lowercase for MySQL. Doing so can cause inconsistencies with point-in-time recovery backups and read replica DB instances. We recommend that you don’t changE the lower_case_table_names parameter for existing database instances. For more information on the methods that you can use, see Major version upgrades. With an Aurora global database based on Aurora MySQL, you can’t perform an in-place upgrade from Aurora MySQL version 2 to version 3 if the lower_case_table_names parameter is turned on. If you use a nondefault value for this option, set up your Aurora MySQL version 3 custom parameter group before upgrading, and specify the parameter group during the snapshot restore operation that creates the version 3 cluster. As a result, we do not have to worry about case sensitivity. This means that data should be retrieved irrespective of whether it is in uppercase or lowercase format. In Aurora MySQL version 3, the value of the lower_case_table_names parameter is set permanently at the time when you create the cluster. In certain situations, it may be necessary to retrieve data from a table regardless of the exact casing of the strings. ![]() For details, see Rebooting an Aurora MySQL cluster (version 2.10 and higher). In Aurora MySQL version 2.10 and higher 2.x versions, make sure to reboot all reader instances after changing the lower_case_table_names setting and rebooting the writer instance. You can choose this value for Amazon RDS for MySQL version 5.6, version 5.7, and version 8.0.19 and higher 8.0 versions. You can choose this value for all Amazon Relational Database Service (Amazon RDS) for MySQL versions.ġ - names stored in lowercase and comparisons aren’t case-sensitive. 0 - names stored as given and comparisons are case-sensitive.
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