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Strings in JPQL and Criteria Queries

>The LOWER(str) and UPPER(str) functions return a string after conversion to lowercase or uppercase

Case Insensitive Indexes

supported. If you cannot use lowercase only (or uppercase only) for the data - consider additional field that will contain the content of the orginal string but in lowercase or uppercase

javax.persistence.criteria.CriteriaBuilder

JPA 2 JavaDoc Reference Documentation - Used to construct criteria queries, compound selections, expressions, predicates, orderings.

upper(x)

"> Create expression for converting a string to uppercase. expression to convert to uppercase