Database independent string comparison with JPA

Question

I\'m working with JPA (Hibernate as provider) and an underlying MySQL database.

I have a table containing every name of streets in Germany. Every streetname has a un

Answer 1

Seems like there is no way in configuring JPA to solve this problem. But what I found is, that it is possible to set the collation not only on the table-level, you can also set it for the whole database as discribed in the Reference Manual 12.1.10 CREATE DATABASE SYNTAX and 9.1.3.2. Database Character Set and Collation

CREATE {DATABASE | SCHEMA} [IF NOT EXISTS] db_name
[create_specification] ...

create_specification:
    [DEFAULT] CHARACTER SET [=] charset_name
  | [DEFAULT] COLLATE [=] collation_name

I only had to create the database with:

CREATE DATABASE db_name CHARACTER SET latin1 COLLATE latin1_general_cs;

With this, I could put a uniqueConstraint on the field name and insert both "Am kleinen Feld" and "Am Kleinen Feld" and when I query for one of them, I'll only receive one.

However, thanks for the help