Php 可以在表中运行两个单独的查询吗？

是否可以在一个表中运行两个查询？一个是表本身，第二个是模式，如果用户的请求状态已被批准，则第二个查询就像一个检查器

“我的表的代码，

是选择表中的所有内容并在表中打印出来的查询。”

<table class="table table-striped table-hover table-condense" id="tbl_manageStudents">
                <thead>
                    <tr>
                        <th scope="col">Research UID</th>
                        <th scope="col">Research Title</th>
                        <th scope="col">Research Type</th>
                        <th scope="col">Action</th>
                    </tr>
                </thead>
                <tbody>
                        <?php
include 'includes/repositoryretriever.php';
?>
                </tbody>
            </table>

包括_checkRequestStatus.php

<?php
include 'includes/connection_operation.php';
$sql = "SELECT tbl_requestforms.ID, tbl_requestforms.request_id, tbl_repository.research_title, tbl_repository.research_tags, tbl_students.student_name, tbl_requestforms.request_status
FROM tbl_repository
JOIN  tbl_students
ON  tbl_repository.research_uid = tbl_students.student_id
JOIN tbl_requestforms ON tbl_requestforms.student_id=tbl_students.student_id
WHERE tbl_repository.research_uid = tbl_students.student_id;";
$query = mysqli_query($conn, $sql);

if ($query) {
    while ($row = mysqli_fetch_assoc($query)) {
        if($row['request_status'] == null){
            ?>
            <input type="submit" name="submit" id="submit" value="Delete" class="btn btn-danger" 
        data-toggle="modal" data-target="#deleteResearchModal<?php echo $row["ID"];?>">
            <?php 
        }
        else {
            
        }
    }
}
?>

但问题是，当我在模式中包含第二个查询时，

表格只显示1行，尽管我有3行。

---

如有任何建议或帮助，我们将不胜感激。

您可以使用for loop

<?php
include 'includes/connection_operation.php';
$sql = "SELECT tbl_requestforms.ID, tbl_requestforms.request_id, tbl_repository.research_title, tbl_repository.research_tags, tbl_students.student_name, tbl_requestforms.request_status
FROM tbl_repository
JOIN  tbl_students
ON  tbl_repository.research_uid = tbl_students.student_id
JOIN tbl_requestforms ON tbl_requestforms.student_id=tbl_students.student_id
WHERE tbl_repository.research_uid = tbl_students.student_id;";
$query = mysqli_query($conn, $sql);

if ($query) {
    while ($row = mysqli_fetch_assoc($query)) {
        if($row['request_status'] == null){
            ?>
            <input type="submit" name="submit" id="submit" value="Delete" class="btn btn-danger" 
        data-toggle="modal" data-target="#deleteResearchModal<?php echo $row["ID"];?>">
            <?php 
        }
        else {
            
        }
    }
}
?>

<?php
include 'includes/connection_operation.php';
$sql = "SELECT * FROM tbl_repository";
$query = mysqli_query($conn, $sql);

if ($query) {
    while ($row = mysqli_fetch_assoc($query)) {
        ?>
        <tr>
    <th><?php echo $row['research_uid']; ?></th>
    <td><?php echo $row['research_title']; ?></td>
    <td><?php echo $row['research_tags']; ?></td>
    <td>
        <input type="submit" name="submit" id="submit" value="View" class="btn btn-info"
        data-toggle="modal" data-target="#researchModal<?php echo $row["ID"]; ?>">
    </td>
    </tr>
    <?php
include './helper/helper_researchModal.php';
    }
}
?>