Question

我有mysqli这个crew_status查询显示PENDING FOR LINEUP query的所有数据，但是现在我的data显示所有database在query

中

这是我的<?php include '../session.php'; require_once 'config.php'; include 'header.php'; $master = 'MASTER'; $chck = 'CHCK'; $second_engineer = '2E'; $second_mate = '2M'; $third_engineer = '3E'; $third_mate = '3M'; $ce = 'CE'; $bsn = 'BSN'; $ab = 'AB'; $olr = 'OLR'; $dcdt = 'DCDT'; $egdt = 'EGDT'; $cook = 'COOK'; $messman = 'MESSMN'; $crew_status = 'PENDING FOR LINEUP'; $query = "SELECT * FROM `crew_info` WHERE `crew_rank` = ? OR `crew_rank` = ? OR `crew_rank` = ? OR `crew_rank` = ? OR `crew_rank` = ? OR `crew_rank` = ? OR `crew_rank` = ? OR `crew_rank` = ? OR `crew_rank` = ? OR `crew_rank` = ? OR `crew_rank` = ? OR `crew_rank` = ? OR `crew_rank` = ? OR `crew_rank` = ? AND `crew_status` = ?"; $stmt = mysqli_prepare($conn, $query); mysqli_stmt_bind_param($stmt, 'sssssssssssssss', $crew_status, $master, $chck, $second_engineer, $second_mate, $third_engineer, $third_mate, $ce, $bsn, $ab, $olr, $dcdt, $egdt, $cook, $messman); mysqli_stmt_execute($stmt); mysqli_stmt_bind_result($stmt, $id, $first_name, $middle_name, $last_name, $age, $month, $day, $year, $birth_place, $gender, $martial_status, $religion, $nationality, $email_address, $address_1, $address_2, $course, $school_graduated, $remarks, $note, $date_added, $crew_status, $crew_rank, $image_name, $updated_photo, $passport_registration, $passport_expiration); ?>：

    <?php

    while(mysqli_stmt_fetch($stmt)) {
        echo "<tr>";
        echo "<td>".sprintf("%s%s%s", $first_name, $middle_name, $last_name)."</td>";
        echo "<td>".sprintf("%s", $crew_rank)."</td>";
        echo "<td>".sprintf("%s", $crew_status)."</td>";
        echo '</tr>';
    }
    ?>

有人可以说出问题是什么吗？

def prepareResponce(responceData):
    """Prepares a Json responce with status 200"""
    response = JsonResponse(responceData)
    return response  # {"foo": "bar"}

class CustomBasicAuthentication(BasicAuthentication):
    userID = None
    userType = None
    userAccess = None
    userName = None

    def is_authenticated(self, request, **kwargs):
        if 'admin' in request.user.username:
             return prepareResponce({'logged in': 'Admin' })
                  #return True
        return prepareResponce({'not allowed for':userName })


    def get_identifier(self, request):
        return request.user.username


class UserResource(ModelResource):
    class Meta:
        queryset = User.objects.all()
        resource_name = 'user'
        authentication = CustomBasicAuthentication()
        allowed_methods = ['get', 'post']

Answer 1

用or，(包裹你的)，试试这个：

SELECT *
FROM `crew_info`
WHERE (
    `crew_rank` = 'MASTER'
    OR `crew_rank` = 'CHCK'
    OR `crew_rank` = 'MESSMN'
    OR `crew_rank` = '2E'
    OR `crew_rank` = '2M'
    OR `crew_rank` = 'COOK'
    OR `crew_rank` = 'OLR'
    OR `crew_rank` = 'AB'
    OR `crew_rank` = '3E'
    OR `crew_rank` = '3M')
AND `crew_status` = 'PENDING FOR LINEUP'

如果没有()，如果其中一个OR匹配，则不会计算条件左。

见：

true || false && false = true 
(true || false) && false = false

我认为您最好使用IN代替OR，例如：

SELECT *
FROM `crew_info`
WHERE 
    `crew_rank` IN ('MASTER','CHCK','MESSMN','2E','2M','COOK','OLR','AB','3E','3M')
AND `crew_status` = 'PENDING FOR LINEUP'

<强> 编辑：

SELECT *
FROM `crew_info`
WHERE (crew_rank = ? OR crew_rank = ? OR crew_rank = ? OR crew_rank = ? OR crew_rank = ? OR crew_rank = ? OR crew_rank = ? OR crew_rank = ? OR crew_rank = ? OR crew_rank = ? OR crew_rank = ? OR crew_rank = ? OR crew_rank = ? OR crew_rank = ?)
AND crew_status = ?

Answer 2

您的查询中的一些更改：

SELECT * FROM `crew_info` WHERE (`crew_rank` = 'MASTER' OR `crew_rank` = 'CHCK' OR `crew_rank` = 'MESSMN' OR `crew_rank` = '2E' OR `crew_rank` = '2M' OR `crew_rank` = 'COOK' OR `crew_rank` = 'OLR' OR `crew_rank` = 'AB' OR `crew_rank` = '3E' OR `crew_rank` = '3M') AND (`crew_status` = 'PENDING FOR LINEUP')

希望它会对你有所帮助。

Answer 3

AND和OR是不明确的。目前还不清楚你是否想要这样的东西：

(A AND B) OR C

或

A AND (B OR C)

添加一些括号以清除：

SELECT * FROM `crew_info` WHERE (`crew_rank` = 'MASTER' OR `crew_rank` = 'CHCK' OR `crew_rank` = 'MESSMN' OR `crew_rank` = '2E' OR `crew_rank` = '2M' OR `crew_rank` = 'COOK' OR `crew_rank` = 'OLR' OR `crew_rank` = 'AB' OR `crew_rank` = '3E' OR `crew_rank` = '3M') AND `crew_status` = 'PENDING FOR LINEUP'

Answer 4

SELECT * FROM crew_info WHERE crew_rank不为空且crew_status ='正在等待线路' 我希望这会奏效。

mysql查询没有显示正确的输出

4 个答案: