library/library_app/reports/library_book_report_sql.xml

<?xml version="1.0" encoding="UTF-8" ?>
<odoo>
    <report id="action_library_book_sql_report"
            string="Library Book SQL Report"
            model="library.book.report"
            report_type="qweb-html"
            name="library_app.report_library_book_sql"
    />
    <template id="report_library_book_sql">
        <t t-call="web.html_container">
            <t t-call="web.external_layout">
                <div class="page">
                    <table class="table table-striped">
                        <tr>
                            <th>Title</th>
                            <th>Published</th>
                            <th>Date</th>
                        </tr>
                        <t t-foreach="docs" t-as="o">
                            <tr>
                                <td class="col-xs-6">
                                    <span t-field="o.name"/>
                                </td>
                                <td class="col-xs-3">
                                    <span t-field="o.publisher_id"/>
                                </td>
                                <td class="col-xs-3">
                                    <span t-field="o.date_published"
                                          t-options="{'widget':'date'}"
                                    />
                                </td>
                            </tr>
                        </t>
                    </table>
                </div>
            </t>
        </t>
    </template>
</odoo>