i have the following statement
$result = mysql_query("SELECT * from rests ORDER BY name asc WHERE flag = '1' LIMIT 0 , 20");
am getting the following error
Invalid query: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE flag = '1' LIMIT 0 , 20' at line 1
am not sure where am going wrong :(
$result = mysql_query("SELECT * from rests WHERE flag = '1' ORDER BY name asc LIMIT 0 , 20");
You cannot have the ORDER BY clause before WHERE clause.
Refer to the MySQL select syntax for the correct order of various clauses.
Try this:
SELECT * from rests WHERE flag = '1' ORDER BY name asc LIMIT 0 , 20
Also Ordering in ascending is default, you may drop the asc.
The ORDER BY clause must be after the WHERE clause. That's all it is.
ORDER BY comes after the WHERE and LIMIT at the end.
WHERE goes before ORDER BY.
Related
I tried the code below in phpmyadmin, but received a syntax error:
select * from `reviews_az`
left join `restaurants_az` on `reviews_az`.`restaurant_id` = `restaurants_az`.`id`
where `source` LIKE %YELP% order by `reviews_az`.`id` desc limit 6);
This is the error log:
MySQL said: Documentation
#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '%YELP% order by `reviews_az`.`id` desc limit 6)' at line 1
You are missing single quote in like.
Correct query:
select * from reviews_az left join restaurants_az on reviews_az.restaurant_id = restaurants_az.id where source LIKE '%YELP%' order by reviews_az.id desc limit 6
Use below query. Missing quotes in LIKE.
Change
LIKE '%YELP%'
Query
select * from `reviews_az`
left join `restaurants_az` on `reviews_az`.`restaurant_id` = `restaurants_az`.`id`
where `source` LIKE '%YELP%' order by `reviews_az`.`id` desc limit 6;
I wanted to query only those items that have a highest likes.
This is the sql query I want to convert into CodeIgnitor's Active Records:
SELECT *, SUM(like) as totalLikes
FROM tbl_like
GROUP BY uploadID
ORDER BY totalLikes DESC
LIMIT 2
CodeIgniter:
public function get_cheezyPic(){
$this->db->select('uploadID, SUM(like) as totalLikes');
$this->db->from('tbl_like');
$this->db->group_by('uploadID');
$this->db->order_by('totalLikes DESC');
$this->db->limit(2);
$query= $this->db->get();
return $query->result_array();}
But when I try to run this code, I've got this error
You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'like) as totalLikes FROM (tbl_like) GROUP BY uploadID ORDER BY totalLikes ' at line 1
SELECT `uploadID`, SUM(like) as totalLikes FROM (`tbl_like`) GROUP BY `uploadID` ORDER BY `totalLikes` desc LIMIT 2
What's wrong with this code?
Thanks for the help.
This'll work for you. Please note that you were using reserved keyword so it should be enclosed with backtic ``.
public function get_cheezyPic(){
$this->db->select('uploadID, SUM(`like`) as totalLikes',false);
$this->db->from('tbl_like');
$this->db->group_by('uploadID');
$this->db->order_by('totalLikes DESC');
$this->db->limit(2);
$query= $this->db->get();
return $query->result_array();
}
This is my query:
$query = "SELECT * FROM table ORDER BY 'timestamp' LIMIT $startAt, $perPage";
I'm trying to sort the results by the latest (latest on top), so I tried to add DESC.
But where ever I put it in the query it gives me an error, the only way it doesn't give an error is like this:
$query = "SELECT * FROM movies ORDER BY 'timestamp' DESC LIMIT $startAt, $perPage";
But even though it doesn't give an error, it still doesn't work.
This probably seems like a silly thing to ask but it's really driving me crazy
Timestamp is the datatype in MySQL. So, always try to avoid such column name in your table. Even, if you have a column named as timestamp, you must have to use backtick. So, use below query:
$query = "SELECT * FROM table ORDER BY `timestamp` LIMIT $startAt, $perPage";
Try backtick on timestamp :
$query = "SELECT * FROM movies ORDER BY `timestamp` DESC LIMIT $startAt, $perPage";
Using backticks permits you to use alternative characters
I think however, instead of mandating whether or not you can use backticks, they should have a standard for names. It solves more 'real' problems.
Do not use quote in field name. Try this:
$query = "SELECT * FROM movies ORDER BY timestamp DESC LIMIT $startAt, $perPage";
If the code is executed, it shows the error:
check the manual that corresponds to your MySQL server version for the right syntax to use near 'ORDER BY ID DESC limit 1'
Like in the following example:
$prevquery = "SELECT * FROM $tbl_name WHERE ID < $ID ORDER BY ID DESC limit 1";
$prevresult= mysql_query($prevquery) or die(mysql_error());
while($prevrow = mysql_fetch_row($prevresult))
{
displaying the previous ID:-
$prevID = $prevrow['ID'];
}
What should one do to prevent this?
Try this
$prevquery = "SELECT * FROM $tbl_name WHERE ID < '$ID' ORDER BY ID DESC limit 1";
If this does not work then echo the query and run in mysql phpmyadmin panel
echo $prevquery = "SELECT * FROM $tbl_name WHERE ID < '$ID' ORDER BY ID DESC limit 1";
This should work
$prevquery = "SELECT * FROM $tbl_name WHERE ID < '$ID' ORDER BY ID DESC limit 1";
$prevresult= mysql_query($prevquery) or die(mysql_error());
while($prevrow = mysql_fetch_row($prevresult))
{
displaying the previous ID:-
$prevID = $prevrow['ID'];
}
An additional note, whenever I see a generic error of the form...
check the manual that corresponds to your MySQL server version for the
right syntax to use near 'ORDER BY ID DESC limit 1'
The hint to look "near" almost always points to a problem in the sql statement just prior to where the single-quoted string shown in the error message begins.
So in this case the error quotes your sql string beginning at 'ORDER BY' which is immediately preceded by $ID. I would bet $ID is either not defined (and ends up being blank in your sql string), or $ID is not the correct data type.
Either way, as others have suggested you need to echo or log your sql string to see what is actually being queried.
You cant user 'where' with LIMIT. Instead use ORDER by id desc LIMIT 1
I can't get a variable to work in SQL statement. I can get it to work when I replace (username = $user) with (ID = 11) which is another column from database and a specific row (11), but I want to include a specific row matching $user from column 'username', along with other random results with a limit of $sn.
When using var_dump($user) I know that the variable has a value, but can't see why it doesn't work in SQL statement.
$photo=mysql_query("SELECT A. * FROM (
SELECT DISTINCT * FROM profile_images
WHERE approved='N'
ORDER BY (username = $user) DESC, RAND()
LIMIT $sn)
as A ORDER BY RAND()");
Getting error message: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '#googlemail.com) DESC, RAND() LIMIT 9) as A ORDER BY RAND()' at line 4
Any help appreciated.
Assuming $sn holds integer value and don't require escaping,
$photo=mysql_query("SELECT A. * FROM (
SELECT DISTINCT * FROM profile_images
WHERE approved='N'
ORDER BY (username = '".mysql_real_escape_string($user)."') DESC, RAND()
LIMIT $sn)
as A ORDER BY RAND()");
In general, consider using PDO and bind parameters.