| http://www.w3.org/ns/prov#value | - JPA 2.0 also adds two new operators to Java Persistence query language: NULLIF, andCOALESCE. JPA 2.0 also adds a number of new operators to JPQL. Two of these are NULLIF, and COALESCE. TheNULLIF operator is particularly useful when a database uses something other than nulls to encode missing or non-applicable information.
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