I want get list users and current user must be first every-time.
In MySql i can make as:
SELECT * FROM `user` ORDER BY id = 2 DESC
In Doctrine i try make alike:
$query = $this->_em->createQuery("SELECT bul, u, c FROM 'Building\Entity\BuildingUserLink' bul JOIN bul.building b JOIN bul.company c JOIN bul.user u WHERE b = :building_id ORDER BY u.id = :current_id DESC");
$query->setParameters(array('building_id' => $building_id, 'current_id' => $current_id));
return $query->getResult();
But i get error - "Expected end of string, got \u0027=\u0027\"
What is my fault?
PS I used ZF2+DOctrine
SELECT * FROM `user` ORDER BY id = 2 DESC, id DESC
In your actual query:
ORDER BY u.id = :current_id DESC, u.id DESC
This can be done using the FIELD function in MySQL. Support for the FIELD function can be added to doctrine using https://github.com/beberlei/DoctrineExtensions.
The query would be:
SELECT * FROM `user` ORDER BY FIELD(id, 2) DESC
Related
My tables
$sql="SELECT *
FROM addresses
LEFT JOIN users ON address_id = user_id
LEFT JOIN notes ON note_id = user_id
ORDER BY id DESC
LIMIT 1";
This is my SQL query, my task is to show the last records from 3 tables, but the table is blank, I don't know why,thanks in advance people :)
I guess the problem is coming from the ORDER BY id DESC .
Indeed, you have no column so called id.
You should probably remove this clause, in order to make your code work.
If you want to take the last records anyway, you can put an ORDER BY address_id DESC which will do the job !
The code directly edited :
$sql="SELECT *
FROM addresses
LEFT JOIN users ON address_id = user_id
LEFT JOIN notes ON note_id = user_id
ORDER BY adress_id DESC
LIMIT 1";
This may work:
SELECT a.address_id, u.user_id, n.note_id
FROM addresses a
LEFT JOIN users_addresses ua ON ua.ua_address_id = a.address_id
LEFT JOIN users u ON u.user_id = ua.ua_user_id
LEFT JOIN notes n ON n.note_user_id = u.user_id
ORDER BY a.address_id DESC
LIMIT 1
Here is the query to get all data from all the tables, not sure what do you mean last records from 3 tables, I can see four tables there:
SELECT *
FROM `addresses`
LEFT JOIN `users_addresses` ON `users_addresses`.`ua_address_id` = `addresses`.`address_id`
LEFT JOIN `users` ON `users`.`user_id` = `users_addresses`.`ua_user_id`
LEFT JOIN `notes` ON `notes`.`note_user_id` = `users`.`user_id`;
I have this query:
$q = "SELECT * FROM user
WHERE sec='1' AND reg_by='".$_SESSION['login_username']."'
ORDER BY date DESC LIMIT $startrow, 30 ";
I have another table which stores appointments, it has a column named meet.
How can I sort this query by meet?
Not all data at users are in other table.
You can use the below query. Replace another_table with your original table name :
$q = "SELECT u.* FROM user AS u LEFT JOIN another_table AS at ON u.userid = at.userid WHERE u.sec='1' AND u.reg_by='".$_SESSION['login_username']."' ORDER BY at.meet DESC LIMIT $startrow, 30 ";
you can use joining for this like
select user.*,meet.* from user left join meet on (meet.userid = user.id) where user.sec='1' AND user.reg_by='".$_SESSION['login_username']."' order by meet.userid DESC
$q = "SELECT * FROM user INNER JOIN user
ON meets.userid=user.userid WHERE sec='1' AND reg_by='".$_SESSION['login_username']."' ORDER BY date DESC LIMIT $startrow, 30 ";
i need select some data from two tables ,
please help me use inner join for this selection .
players in selction2 must not be in selection1...
first select :
$rs = "SELECT *
FROM `player`
WHERE `status`=1 AND `credit`>=1 AND `username` NOT LIKE '$user'
ORDER BY ls ASC,credit DESC
LIMIT 0 ,10;
Second: this players must remove from result of selection1
$rs2 = "SELECT *
FROM `ip_log`
WHERE `playerid`='$ui' AND `win`='1' AND `date`='$date' ";`
You can use LEFT JOIN for this:
This shows the log messages for everyone not in selection 1.
SELECT l.*
FROM ip_log AS l
LEFT JOIN
(SELECT username
FROM player
WHERE status = 1 AND credit >= 1 AND username NOT LIKE '$user'
ORDER BY ls ASC, credit DESC
LIMIT 10) AS p
ON l.player = p.username
WHERE win = 1 and date = '$date'
AND p.username IS NULL
This shows the top 10 player data, except the ones with log messages in selection 2
SELECT p.*
FROM player AS p
LEFT JOIN ip_log AS l ON l.player = p.username AND l.win = 1 AND l.date = '$date'
WHERE p.status = 1 AND p.credit >= 1 AND p.username NOT LIKE '$user'
AND l.player IS NULL
ORDER BY p.ls ASC, p.credit DESC
LIMIT 10
In both cases, testing a column in the second table with IS NULL makes it return only the rows in the first table that don't have a match in the second table. See
Return row only if value doesn't exist
You can do it with LEFT JOIN
SELECT player.*,ip_log.* FROM `player` LEFT JOIN `ip_log` ON player.id!=ip_log.playerid GROUP BY player.id
I query a database and order by a date column in the table and also by another column in another table. This is working perfectly.
SELECT * FROM myTable1 LEFT JOIN myTable2 b ON myTable1.id = b.id WHERE myTable1.id !='foo' ORDER BY myTable1.dateColumn DESC, b.column2 ASC
What I would like is to do is ORDER by myTable1.dateColumn ONLY if there is no value in b.column2 for that particular record. As you can see from my above current implementation, it will always ORDER BY myTable1.dateColumn regardless.
Stackoverflow Suggested tag for this question is mysql but in fact I am using mysqli. It makes no difference for the purpose of this question.
You should better provide some data sample and expected result, but so far you can try:
SELECT * FROM myTable1
LEFT JOIN myTable2 b
ON myTable1.id = b.id
WHERE myTable1.id !='foo'
ORDER BY CASE WHEN b.column2 IS NULL myTable1.dateColumn ELSE NULL END DESC, b.column2 ASC
You can put CASE Statements inside of an ORDER BY
SELECT *
FROM myTable1
LEFT JOIN myTable2 b
ON myTable1.id = b.id
WHERE myTable1.id != 'foo'
ORDER BY CASE WHEN b.column2 IS NULL THEN 1 ELSE 0 END ASC, myTable1.dateColumn DESC
You can use a function in the order part; something like the following:
SELECT * FROM myTable1 LEFT JOIN myTable2 b ON myTable1.id = b.id WHERE myTable1.id !='foo'
ORDER BY IF(b.column2 IS NULL,1,0),IF(b.column2 IS NULL,myTable1.dateColumn,NULL) DESC, b.column2 ASC
I have created a feature where users can start new topics (similar to forums).
At the moment on a page, the query for the topics are as follows:
$q = "SELECT ".TBL_COMMUNITYTHREADS.".title, ".TBL_COMMUNITYTHREADS.".id,
".TBL_COMMUNITYTHREADS.".date, ".TBL_COMMUNITYTHREADS.".author, ".TBL_USERS.".username FROM ".TBL_COMMUNITYTHREADS."
INNER JOIN ".TBL_USERS." ON ".TBL_COMMUNITYTHREADS.".author = ".TBL_USERS.".id
WHERE type = '$type'
ORDER BY date DESC LIMIT $offset, $rowsperpage ";
The tables are constants and the offset and rowsperpage are variables passed in to limit how many posts are on a page.
At the moment though, all the topics are ordered by the date.
I want them to be ordered by the latest response.
Similarly to forums, when the reponse inside the topic is newest, that topic will go to the top.
The topics are stored in tbl_communitythreads and the replies in tbl_communityreplies.
How can I ordered them by the latest repsonse.
They are linked by the threadid in tbl_communityreplies. Also in that one is the date column.
Thankyou for reading, I just cant think of how to do this.
This:
SELECT c.title, c.id, c.date, c.author, u.username,
(
SELECT MAX(reply_date)
FROM tbl_communityreplies cr
WHERE cr.thread = c.id
) AS last_reply
FROM TBL_COMMUNITYTHREADS c
JOIN TBL_USERS u
ON u.id = c.author
ORDER BY
last_reply DESC, c.id DESC
LIMIT $offset, $rowsperpage
or this:
SELECT c.title, c.id, c.date, c.author, u.username
FROM (
SELECT cr.thread, cr.reply_date, cr.id
FROM tbl_communityreplies cr
WHERE (cr.last_reply, cr.id) =
(
SELECT last_reply, id
FROM tbl_communityreplies cri
WHERE cri.thread = cr.thread
ORDER BY
thread DESC, last_reply DESC, id DESC
)
ORDER BY
last_reply DESC, id DESC
LIMIT $offset, $rowsperpage
) q
JOIN TBL_COMMUNITYTHREADS c
ON c.id = q.thread
JOIN TBL_USERS u
ON u.id = c.author
ORDER BY
q.reply_date DESC, q.id DESC
The former query is more efficient for large values of $offset, or if you have few threads with lots of replies.
Issue the following commands:
CREATE INDEX ix_communitythreads_replydate_id ON TBL_COMMUNITYTHREADS (reply_date, id)
CREATE INDEX ix_communitythreads_thread_replydate_id ON TBL_COMMUNITYTHREADS (thread, reply_date, id)
for this to work fast.
by join with another table , then you can order by column from this table.