使用命名SQLqueries时出现问题

Question

如果我使用java执行以下命名查询，则我的查询返回零行。但是当我在sql developer中运行相同的查询时，我得到了一行。

<sql-query name="fetchMaxLoanAmountWithoutSuburb" cacheable="true">
        <return-scalar column="maxLoanAmount" type="string" />
            SELECT MAX_LOAN_AMOUNT "maxLoanAmount"
            FROM CZ_SC_OR_MLS_MAX_LOAN_AMOUNT x, CZ_SC_OR_LOCATION_SUBURB y, CZ_SC_OR_STATE_ZONE z
            WHERE y.POSTCODE in (:postalCode)
            and y.STATE = z.STATE
            and y. CATEGORY = z.CATEGORY
            and z.ZONE = x.ZONE
            and x.PRODUCT_TYPE = :productType
            and x.DOC_TYPE = :docType
            and x.PROPERTY_TYPE = :propertyType
            and x.MIN_LVR_PCT &lt;= (:minlvrPercentage)
            and x.MAX_LVR_PCT &gt;= (:maxlvrPercentage)
            order by to_number(MAX_LOAN_AMOUNT)
</sql-query>

请告诉我是否可以在命名查询中使用“in”？请给我一个解决方案。