Explains how comparison operators can be used in JPQL queries, including in ... When both operands are not NULL (not shown in the table) the operator is ... To check for NULL using standard JPQL you can use the special IS NULL and IS ... (and isNull and isNotNull also take a non comparable object as an argument).
jpa-query-check-if-parameter-is-null
939c2ea5af
jpa query check if parameter is null, sql query check if parameter is null
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