                               <p:column headerText="GRN No" sortBy="#{b.deptId}" filterBy="#{b.deptId}" filterMatchMode="contains">
                                        <h:outputText value="#{b.deptId}" />
                                    </p:column>

                                    <p:column headerText="Date" sortBy="#{b.billDate}" filterBy="#{b.billDate}" filterMatchMode="contains">
                                        <h:outputText value="#{b.billDate}">
                                    