在1个MySQL查询中使用select语句和php变量插入

Question

我有类似的东西可以将数据从表单插入到我的MySQL表中。 我在插入中使用select语句是否有效？ 请赐教。

if(isset($_POST['date']) && isset($_POST['docName']) && isset($_POST['docSpec']) && isset($_POST['time']) && isset($_POST['symptoms']) )
{   
    $nameOfUser = $_COOKIE['userlogin'];

    $docName = $_POST['docName'];

    $date = $_POST['date'];

    $symptoms = $_POST['symptoms'];

    $time = date('H:i:s',strtotime($_POST['time'])); 

    $id = mt_rand(1000,9999);  //generate random appointment id

    $insertQuery = "insert into appointment values
                ($id,(select doctorid from doctors where doctorName like '$docName' ),
                $date,$symptoms,
                (select patientid from patient where patientFName like '$nameOfUser'), $time)";

    if(mysqli_query($conn,$insertQuery)===true)
    {
        echo "<script>alert('success');</script>";
    }
    else
    {
        die('Invalid query: ' . mysql_error()); 
        $message .= 'Whole query: ' . $query;
        die($message);  
    }
}

它说无效查询。 insert语句中的列已经按正确的顺序排列。 谁能帮我？

Answer 1

您必须指定要插入的列-

insert into appointment (col1, col2, col3, ...) values
($id,(select doctorid from doctors where doctorName like '$docName' ), $date,$symptoms,(select patientid from patient where patientFName like '$nameOfUser'),$time)";

看起来您有6列。

编辑：这种语法可能有助于清除问题-

$insertQuery = "INSERT INTO `appointment` (`col1`, `col2`, `col3`,`col4`,`col5`,`col6`) ";
$insertQuery .= "VALUES (";
$insertQuery .= "'" . $id . "'";
$insertQuery .= ", '" . "(SELECT `doctorid` FROM `doctors` WHERE `doctorName` LIKE '%" . $docName . "%')" . "'";
$insertQuery .= ", '" . $date . "'";
$insertQuery .= ", '" . $symptoms . "'";
$insertQuery .= ", '" . "(SELECT `patientid` FROM `patient` WHERE `patientName` LIKE '%" . $nameOfUser . "%')" . "'";
$insertQuery .= ", '" . $time . "'";
$insertQuery .= ")";

由于没有使用通配符，因此您还在使用LIKE而没有机会找到其他元素。