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我目前正在尝试编写一个查询，该查询将返回在我们的时间表系统中没有记录给定日期时间的所有用户 . 我们目前有2个表，时间表和用户 . 我正在尝试进行一个查询，该查询将返回日期范围的时间表表中没有条目的用户列表 . 每天的时间表中只有一条记录，这应该很简单，但我无法弄清楚如何在我的生活中接近这一点 .

任何帮助，将不胜感激 ：） .

+-----------------------+------------------+------+-----+---------+----------------+
| Field                 | Type             | Null | Key | Default | Extra          |
+-----------------------+------------------+------+-----+---------+----------------+
| timesheetID           | int(11) unsigned | NO   | PRI | NULL    | auto_increment |
| timesheetForUser      | int(11) unsigned | NO   |     |         |                |
| timesheetForDate      | date             | NO   |     |         |                |
| timesheetForCheckIn   | int(11)          | YES  |     | NULL    |                |
| timesheetNotes        | text             | YES  |     | NULL    |                |
| timesheetIsFilled     | tinyint(1)       | NO   |     |         |                |
| timesheetNoFillReason | int(11) unsigned | NO   |     |         |                |
| timesheetCreatedOn    | datetime         | NO   |     |         |                |
| timesheetCreatedBy    | int(11) unsigned | NO   |     |         |                |
| timesheetUpdatedOn    | datetime         | YES  |     | NULL    |                |
| timesheetUpdatedBy    | int(11) unsigned | YES  |     | NULL    |                |
+-----------------------+------------------+------+-----+---------+----------------+

+--------------------------------+---------------+------+-----+---------+----------------+
| Field                          | Type          | Null | Key | Default | Extra          |
+--------------------------------+---------------+------+-----+---------+----------------+
| userID                         | int(11)       | NO   | PRI | NULL    | auto_increment |
| userAccount                    | int(11)       | YES  |     | NULL    |                |
| userOrganization               | int(11)       | YES  |     | NULL    |                |
| userIsEmployee                 | tinyint(4)    | YES  |     | 0       |                |
| userEmployeeSince              | date          | YES  |     | NULL    |                |
| userName                       | varchar(255)  | YES  |     | NULL    |                |
| userTitle                      | varchar(255)  | YES  |     | NULL    |                |
| userEmail                      | varchar(255)  | YES  |     | NULL    |                |
| userLogin                      | varchar(50)   | YES  |     | NULL    |                |
| userPassword                   | varchar(255)  | YES  |     | NULL    |                |
| userSendInvitation             | tinyint(4)    | YES  |     | NULL    |                |
| userAddress1                   | varchar(255)  | YES  |     | NULL    |                |
| userAddress2                   | varchar(255)  | YES  |     | NULL    |                |
| userCity                       | varchar(255)  | YES  |     | NULL    |                |
| userCountry                    | char(2)       | YES  |     | NULL    |                |
| userState                      | varchar(6)    | YES  |     | NULL    |                |
| userStateOther                 | varchar(255)  | YES  |     | NULL    |                |
| userZip                        | varchar(20)   | YES  |     | NULL    |                |
| userPhone                      | varchar(50)   | YES  |     | NULL    |                |
| user_easypaycode               | varchar(6)    | YES  |     | NULL    |                |
| userFax                        | varchar(50)   | YES  |     | NULL    |                |
| userCell                       | varchar(50)   | YES  |     | NULL    |                |
| userTimezone                   | int(11)       | YES  |     | NULL    |                |
| userNotes                      | text          | YES  |     | NULL    |                |
| userActive                     | tinyint(4)    | NO   |     | 0       |                |
| userDisplayPictureType         | tinyint(4)    | YES  |     | NULL    |                |
| userDisplayPicture             | varchar(255)  | YES  |     | NULL    |                |
| userThumbnailPicture           | varchar(255)  | YES  |     | NULL    |                |
| userCanWriteMessages           | tinyint(4)    | NO   |     | 0       |                |
| userCanWriteComments           | tinyint(4)    | NO   |     | 0       |                |
| userCanUploadFiles             | tinyint(4)    | NO   |     | 0       |                |
| userCanCreateEvents            | tinyint(4)    | NO   |     | 0       |                |
| userCanCreateTickets           | tinyint(4)    | NO   |     | 0       |                |
| userCanManageProjects          | tinyint(4)    | NO   |     | 0       |                |
| userCanManageUsers             | tinyint(4)    | NO   |     | 0       |                |
| userCanManageOrganizations     | tinyint(4)    | NO   |     | 0       |                |
| userCanManageUserGroups        | tinyint(4)    | NO   |     | 0       |                |
| userCanManageMessageCategories | tinyint(4)    | NO   |     | 0       |                |
| userCanManageSetupOptions      | tinyint(4)    | NO   |     | 0       |                |
| userCanManageAllUsersItems     | tinyint(4)    | NO   |     | 0       |                |
| userCanEnterTimesheets         | tinyint(4)    | NO   |     |         |                |
| userCanManageTimesheets        | tinyint(4)    | NO   |     |         |                |
| userCanUseTimeclock            | tinyint(4)    | YES  |     | NULL    |                |
| userCanOnlyUseTimeclock        | tinyint(4)    | YES  |     | NULL    |                |
| userLastLogin                  | datetime      | NO   |     |         |                |
| userPWResetText                | varchar(255)  | YES  |     | NULL    |                |
| userDeleted                    | tinyint(4)    | NO   |     | 0       |                |
| userDeletedBy                  | int(11)       | YES  |     | NULL    |                |
| userDeletedOn                  | datetime      | YES  |     | NULL    |                |
| userMinHoursPerDay             | decimal(10,1) | YES  |     | NULL    |                |
+--------------------------------+---------------+------+-----+---------+----------------+

此外，如果一天没有记录时间，则在时间表中不会创建记录 .

php mysql sql join

3 回答

  • 0
    SELECT * FROM Users U
   WHERE U.UserNo NOT IN (
     SELECT timesheetForUser FROM timesheets 
       WHERE timesheetForDate BETWEEN ??? AND ???
   )
    回复于
  • 2

    第一个查询获取@start和@end之间没有注册的所有用户：

    SELECT users.userName
FROM users
LEFT JOIN timesheets
ON timesheets.timesheetForUser = users.userID
AND timesheets.timesheetForDate BETWEEN @start AND @end
WHERE timesheets.timesheetForUser IS NULL

    此查询将提取所有缺少任何日期和缺少日期的用户（正如您在问题评论中所要求的那样）：

    SELECT dates.timesheetForDate, users.userName
FROM (SELECT DISTINCT timesheetForDate FROM timesheets) AS dates
CROSS JOIN users
LEFT JOIN timesheets
    ON timesheets.timesheetForUser = users.userID
    AND dates.timesheetForDate = timesheets.timesheetForDate
WHERE timesheets.timesheetForUser IS NULL

    试验台：

    CREATE TABLE timesheets (timesheetForUser int, timesheetForDate datetime);
INSERT INTO timesheets (timesheetForUser, timesheetForDate) VALUES
(1, '2010-01-01'),
(2, '2010-01-01'),
(3, '2010-01-01'),
(1, '2010-01-02'),
(3, '2010-01-02'),
(2, '2010-01-03'),
(2, '2010-01-04'),
(3, '2010-01-04');

CREATE TABLE users (userId int, userName nvarchar(100));
INSERT INTO users (userId, userName) VALUES
(1, 'Foo'),
(2, 'Bar'),
(3, 'Baz');

    使用测试台的第二次查询输出：

    '2010-01-02 00:00:00', 'Bar'
'2010-01-03 00:00:00', 'Foo'
'2010-01-03 00:00:00', 'Baz'
'2010-01-04 00:00:00', 'Foo'

    如果需要，您还可以创建第二个查询作为视图，并像这样查询：

    SELECT * FROM ViewMissingRegistrations
WHERE timesheetForDate BETWEEN @start AND @end
    回复于
  • 3

    你可以试试

    SELECT  u.*
FROM    Users u LEFT JOIN
        timesheets t ON u.userid = t.userid
WHERE   t.Date BETWEEN '01 Jan 2009' AND '31 Jan 2009'
AND     t.userID IS NULL
    回复于

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