Table user left join table personal_record then join table activity.
user table:id ...
personal_record table: user.id, activity.id, confirm_time...
activity: id, time, delete_time...
note: time means hours spent on this activity, 8 etc.
Before user join personal_record, some of persanoal_record rows need to be filtered as personal_record only valid when confirm_time is set.personal_reocrd only contains activity_id, activity which contains activities' time need to join to sum (time) a person spend.
As a activity is deleted by updating activity.delete_time column.
Here is my code.
Update(Almost solved): ($data_begin filter the range of records)
$result = $this->db->select('user.*, ifnull(sum(ac.time), 0) as time')
->from('user')
->join('(select * from personal_record where personal_record.confirm_time is not null) as pr','user.id = pr.person', 'left')
->join('(select * from activity where activity.delete_time is null and activity.create_time >"'.$date_begin.'")as ac','ac.id = pr.activity', 'left')
->group_by('user.id')
->order_by('time', 'desc')
->get()
->result();
$this->db->select('user.*,personal_record.*,ifnull(sum(activity.time), 0) as time');
$this->db->from('user');
$this->db->join('personal_record','personal_record.person = user.id');
$this->db->join('activity','activity.id = personal_record.activity');
$this->db->where('activity.delete_time',null);
$this->db->or_where('personal_record.confirm_time !=', null);
$this->db->order_by('time', 'asc');
$this->db->group_by('user.id');
$data = $this->db->get()->result();
return $data;
Related
user_table(user_id, user_name)
user_group_table(user_id, group_id)
group_table(group_id, group_name)
I need to retrieve data (user_id, user_name, group_name)
How can I join these tables in CodeIgniter?
$this->db->query('SELECT user_table.user_id, user_table.user_name,
group_table.group_name
FROM
user_table
join user_group_table on user_group_table.user_id=user_table.user_id
join group_table on group_table.group_id=user_group_table.group_id')
->result_array();
return it and print/use the array however you like OR you can use Codeigniter Query Builder Class
$where = array(); //if u want to use any condition
$this->db->select('user_table.user_id, user_table.user_name, group_table.group_name');
$this->db->join('user_group_table', 'user_group_table.user_id = user_table.user_id');
$this->db->join('group_table', 'group_table.group_id = user_group_table.group_id');
$result = $this->db->order_by('user_table.user_id', 'desc')->get_where('property', $where)->result_array();
return $result
$this->db->select('user_table.user_id,user_table.user_name,group_table.group_name');
$this->db->from('user_group_table');
$this->db->join('user_table', 'user_table.user_id = user_group_table.user_id');
$this->db->join('group_table', 'group_table.group_id = user_group_table.group_id');
$query = $this->db->get();
$res = $query->result();
return $res;
SELECT apntoken,deviceid,created
FROM `distribution_mobiletokens` as dm
WHERE userid='20'
and not exists (
select 1
from `distribution_mobiletokens`
where userid = '20'
and deviceid = dm.deviceid
and created > dm.created
)
What this query does is selects all mobiletokens where the user id is equal to 20 and the deviceid is the same but chooses the newest apntoken for the device.
My database looks like below.
For more information on this query, I got this answer from another question I asked here(How to group by in SQL by largest date (Order By a Group By))
Things I've Tried
$mobiletokens = $em->createQueryBuilder()
->select('u.id,company.id as companyid,user.id as userid,u.apntoken')
->from('AppBundle:MobileTokens', 'u')
->leftJoin('u.companyId', 'company')
->leftJoin('u.userId', 'user')
->where('u.status = 1 and user.id = :userid')
->setParameter('userid',(int)$jsondata['userid'])
->groupby('u.apntoken')
->getQuery()
->getResult();
//#JA - Get the list of all the apn tokens we need to send the message to.
foreach($mobiletokens as $tokenobject){
$deviceTokens[] = $tokenobject["apntoken"];
echo $tokenobject["apntoken"]."\n";
}
die();
This gives me the incorrect response of
63416A61F2FD47CC7B579CAEACB002CB00FACC3786A8991F329BB41B1208C4BA
9B25BBCC3F3D2232934D86A7BC72967A5546B250281FB750FFE645C8EB105AF6
latestone
Any help here is appreciated!
Other Information
Data with SELECT * FROM
Data after using the SQL I provided up top.
You could use a subselect created with the querybuilder as example:
public function selectNewAppToken($userId)
{
// get an ExpressionBuilder instance, so that you
$expr = $this->_em->getExpressionBuilder();
// create a subquery in order to take all address records for a specified user id
$sub = $this->_em->createQueryBuilder()
->select('a')
->from('AppBundle:MobileTokens', 'a')
->where('a.user = dm.id')
->andWhere('a.deviceid = dm.deviceid')
->andWhere($expr->gte('a.created','dm.created'));
$qb = $this->_em->createQueryBuilder()
->select('dm')
->from('AppBundle:MobileTokens', 'dm')
->where($expr->not($expr->exists($sub->getDQL())))
->andWhere('dm.user = :user_id')
->setParameter('user_id', $userId);
return $qb->getQuery()->getResult();
}
I did this for now as a temporary fix, not sure if this is best answer though.
$em = $this->em;
$connection = $em->getConnection();
$statement = $connection->prepare("
SELECT apntoken,deviceid,created
FROM `distribution_mobiletokens` as dm
WHERE userid=:userid
and not exists (
select 1
from `distribution_mobiletokens`
where userid = :userid
and deviceid = dm.deviceid
and created > dm.created
)");
$statement->bindValue('userid', $jsondata['userid']);
$statement->execute();
$mobiletokens = $statement->fetchAll();
//#JA - Get the list of all the apn tokens we need to send the message to.
foreach($mobiletokens as $tokenobject){
$deviceTokens[] = $tokenobject["apntoken"];
echo $tokenobject["apntoken"]."\n";
}
In my first query, I am looping through all records that have a status of open, and channel_id of 23, getting the column field_id_299. The field field_id_299 is the entry_id for another channel.
The second query, then uses this field_id_299 AS entry_id, getting the column field_id_36.
Is it possible to do all of this in one query?
$query = ee()->db->select('cd.field_id_299')
->from('exp_channel_titles AS ct')
->join('exp_channel_data AS cd', 'ct.entry_id = cd.entry_id', 'left')
->where('ct.status', 'open')
->where('ct.channel_id', '23')
->get();
$query = ee()->db->select('field_id_36')
->from('exp_channel_data')
->where('entry_id', $entry_id)
->get();
Try below
$query = ee()->db->select('cd1.field_id_36')
->from('exp_channel_titles AS ct')
->join('exp_channel_data AS cd', 'ct.entry_id = cd.entry_id', 'left')
->join('exp_channel_data AS cd1', 'cd.field_id_299 = cd1.entry_id', 'left')
->where('ct.status', 'open')
->where('ct.channel_id', '23')
->get();
i need to take only the items from the table "__sobi2_item" that are in the same country of the user.And use this results for the rest of the function Showupdatelisting. This is my php script:
<?php
function showUpdatedListing()
{
//i found the user country field value...
global $database;
$user =& JFactory::getUser();
$userId = $user->get( 'id' );
$sql = "SELECT (id) FROM #__community_fields WHERE fieldcode= 'FIELD_COUNTRY'";
$database->setQuery( $sql );
$fieldID = $database->loadResult();
$sql = "SELECT (value) FROM #__community_fields_values WHERE field_id= {$fieldID} && user_id= {$userId}";
$database->setQuery( $sql );
$usercountry = $database->loadResult();
// From all the entries i take only ones that have country field like the user has...
$query = "SELECT `data_txt`, `itemid`, `fieldid` FROM `#__sobi2_fields_data` WHERE (`fieldid` = 6) AND ('data_txt' = {$usercountry})";
$database->setQuery($query);
$ResultsArray = $database->loadObjectList();
// We need something here like a Query to load only the entries from $ResultsArray... ??
//....instead of this...
$config =& sobi2Config::getInstance();
$database = $config->getDb();
$now = $config->getTimeAndDate();
$query = "SELECT itemid FROM #__sobi2_item WHERE (published = 1 AND publish_down > '{$now}' OR publish_down = '{$config->nullDate}') ORDER BY last_update DESC LIMIT 0, 30";
$database->setQuery($query);
$sids = $database->loadResultArray();
// ......... show update function goes on...
?>
can anyone help me to connect and adjust these query? thanks.
NB:with the last query (4) i need to filter items of the $ResultsArray taking only ones published and ordering them by last_update. i know it is wrong and now there is no connection with the query before. This is how i have tables in mysql:
_sobi2_fields_data:
itemid
fieldid
data_txt --->(is a description column for each field)
_sobi2_item:
itemid
published --->( 1 if true, 0 if false )
last_update --->(date of the last update for the item, also equal to the publication date if there are no changes)
thanks.
I don't know what you are trying to ask as well. Your last query (number 4) doesn't make sense to me, how is it linked to the above queries?
[EDIT] I've linked your 4th table above assuming itemid is the primary key for the items in sobi2_item table and that the value is linked to the sobi_fields_data table via itemid.
SELECT
cf.id,
sfd.data_txt,
sfd.itemid,
sfd.fieldid
FROM #__community_fields cf
INNER JOIN #__community_fields_values cfv ON cf.id=cfv.field_id
INNER JOIN #__sobi2_fields_data sfd ON cfv.value=sfd.data_txt
INNER JOIN #__sobi2_item si ON sfd.itemid=si.itemid
WHERE cf.fieldcode='FIELD_COUNTRY'
AND cfv.user_id=$userId
AND sfd.fieldid=6
AND si.published=1
AND (si.publish_down > '{$now}' OR si.publish_down = '{$config->nullDate}')
ORDER BY si.last_update DESC LIMIT 0, 30
Good luck!
i'm writing a chat app with php/mysql
i have 3 tables: user, room and room_participant with these structures:
user: id, username
room: id, title
room_participant: room_id, user_id
Now i want to get list of all rooms along with list of all participants in each room.
Until now i just select all rooms from room table and iterate through all rooms and select users information out of each entry, which is very inefficient.
Is there any way to combine all these select into only 1 select query?
Not certain about this without testing, but give it a try:
SELECT
room.*,
user.*
FROM room
JOIN room_participant ON room_id = room_participant.id
JOIN user ON room_participant.user_id = user.id
ORDER BY room.id
To deduplicate rooms, use GROUP_CONCAT()
UPDATE GROUP_CONCAT() modified to return id|username
SELECT
room.id, room.name
GROUP_CONCAT(CONCAT(user.id,'|',user.username)) AS userlist
FROM room
JOIN room_participant ON room_id = room_participant.id
JOIN user ON room_participant.user_id = user.id
GROUP BY room.id, room.name
ORDER BY room.id
With the userlist generated by GROUP_CONCAT as id|name,id|name,id|name you can use PHP explode() to separate them.
// Split the list on the commas
$users = explode(",", $userlist);
$final_users = array();
// Then split each on the `|`
foreach ($users as $user) {
$split_user = explode("|", $user);
// Append each as a new associative array to $final_users
$final_users[] = array('id' => $split_user[0], 'username' => $split_user[1]);
}
// Now you have an array of users as id, username
var_dump($final_users);
You may wish to do two queries, and then match things up in whatever is using MySQL, e.g. PHP.
These two:
SELECT id, title
FROM room;
SELECT rp.room_id, rp.user_id, u.username
FROM room_participant AS rp
INNER JOIN user as u ON rp.user_id = u.id;
Or these two:
SELECT id, username
FROM user;
SELECT rp.room_id, rp.user_id, r.title
FROM room_participant AS rp
INNER JOIN room as r ON rp.user_id = r.id;
Which two queries make sense depends on what you're doing with the info really.
You could go a step further and select all three separately:
SELECT *
FROM room;
SELECT *
FROM user;
SELECT *
FROM room_participant;
Note: It's probably better to state the columns, rather than using '*', just in case in the future new columns are added to the table that you're not really interested in for these queries.
Obviously, you'd then have to match everything up in whatever is using MySQL, e.g. PHP. You could create a list of rooms and users from the selected info, and then match them up with something like:
// Use MySQL to populate $roomList from database, then do...
foreach ($roomList as $room)
{
$id = $room['id'];
$title = $room['title'];
$this->roomList[$id] = new Room($id, $title);
}
// Use MySQL to populate $userList from database, then do...
foreach ($userList as $user)
{
$id = $user['id'];
$username = $user['username'];
$this->userList[$id] = new User($id, $username);
}
// Use MySQL to populate $roomParticipantList from database, then do...
foreach ($roomParticipantList as $roomParticipant)
{
$room = $this->roomList[$roomParticipant['room_id']];
$user = $this->userList[$roomParticipant['user_id']];
// You could do one/both of these, depending on requirements.
$room->enterUser($user);
$user->joinRoom($room);
}