Generated invalid SQL identifiers for postgresql when specifying @Table(name=...)

TL;DR: We should not always quote table/schema name, it hardly will be the right thing to do.

I have created github repository in order to demonstrate the problem we have encountered using spring-data-jdbc with Postgresql. This application will fail with

relation "SAMPLE_ENTITY" does not exist

The problem is that spring-data-jdbc use force quoting here, which is not always the right thing to do, you can read more in this Postgresql documentation section.

To summarize, as described in this documentation section, "SAMPLE_ENTITY" and SAMPLE_ENTITY is not the same identifier name.

My suggestion is to add couple of attributes into @Table annotations, like tableNameQuoted, schemaNameQuoted in order to allow user to specify quoting policy explicitly.