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JPA Query to handle NULL parameter value

I am new to JPA here is one of my query and i have couple of parameters as part of query and any parameter can be null value

@Query(value = "SELECT ord.purchaseOrderNumber,ord.salesOrderNumber,ord.quoteNumber"

            + " FROM Order ord WHERE ord.purchaseOrderNumber LIKE :poNumber%  "
            + " AND ord.salesOrderNumber LIKE :soNumber "
            + " AND ord.quoteNumber = :quoteNumber "

example in the above if my input parameter :quoteNumber is NULL then i shouldn't filter by ord.quoteNumber = NULL, so how do avoid this

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You could add a set of conditions to "ignore" properties with null values or empty strings.

e.g.

+ " AND (ord.quoteNumber = :quoteNumber or :quoteNumber is null or :quoteNumber = '' ")

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