如何通过JPA查询方法使用SQL函数UPPER（）和LOWER（）

Question

I have a JPA Query method that gets rows by a column value like this:

findAllByLastNameOrderBySortKeyAsc(String name)

But I would like the query to be case insensitive. In SQL I can use the upper() function like this

select * from table_name where upper(last_name) like '%NAME%' order by sort_key asc

but I haven't been able to find any examples or documentation on how I can implement this with named queries.

Update:

Although it does not answer the question of how to use upper() or lower() with named queries, I was able to solve the problem of a case insensitive query by using IgnoreCase in the named query as follows:

findAllByLastNameIgnoreCaseOrderBySortKeyAsc(String name)

Answer 1

As explained in the spring-data-jpa documention , you must use the IgnoreCase keyword to be case insensitive.

Your method definition should be like this:

findAllByLastNameIgnoreCaseOrderBySortKeyAsc(String name)

The resulting SQL will be: … where UPPER(x.firstame) = UPPER(?1)