$active_sth = $dbh->prepare("SELECT * FROM user_campaign
WHERE status='blasting'
OR status='ready'
OR status='followup_hold'
OR status='initial_hold'
AND uid=:uid
ORDER BY status ASC");
$active_sth->bindParam(':uid', $_SESSION['uid']['id']);
$active_sth->execute();
I am positive $_SESSION['uid']['id'] = 7
but it will also pull results of id 10 or any other number.
Is my AND/OR clause written wrong?
Yes, query is wrong
SELECT * FROM user_campaign
WHERE (
status='blasting'
OR status='ready'
OR status='followup_hold'
OR status='initial_hold'
)
AND uid=:uid
ORDER BY status ASC
You have to group all ORs to make sure that row got one of this values, and separately check if it have given uid.
The proper way to write that is:
SELECT * FROM user_campaign
WHERE status IN ('blasting', 'ready', 'followup_hold', 'initial_hold')
AND uid =: uid
ORDER BY status ASC
You should use IN instead of that huge amount of ORs :)
Related
i query to check if a point(input) is intersect with polygons in php:
$sql1="SELECT ST_intersects((ST_SetSRID( ST_Point($startlng, $startlat),4326))
, zona_bahaya.geom) as intersek
FROM zona_bahaya";
$query1 = pg_query($conn,$sql1);
$check_location = pg_fetch_array($query1);
if (in_array('t',$check_location)) {
dosemthing1;}
else {dosomething2;}
it's work peroperly before i update the data
after data updated, it's only show the first row when i check the pg_fetch_array result. here is the result {"0":"f","intersek":"f"} .
i try to check from pgadmin and it's can show 8 result (1 true(intersected) and 7 false(not intersect)) using updated data with this query:
SELECT ST_intersects((ST_SetSRID( ST_Point(110.18898065505843, -7.9634510320131175),4326))
, zona_bahaya.geom) as intersek
FROM zona_bahaya;
to solve it, i order the query result descended so the 'true' gonna be the first like this:
order by intersek desc
anybody can help me to findout way it just only show the first row???
here some geom from STAsText(zonabahaya.geom) not all of them : MULTIPOLYGON(((110.790892426072 -8.19307615541514,110.791999687385 -8.19318330973567,110.794393723931 -8.1927980624753,110.794586347561 -8.19205508561603,110.795329324421 -8.19120203811094,110.796540101525 -8.19023891996003,110.797503219676 -8.18933083713203,110.798576408472 -8.18919324882476,110.79929186767 -8.18957849608512,110.800337538805 -8.19059664955894,110.800585197758 -8.19150473238694,110.80022746816 -8.19238529755349,110.799787185576 -8.19290813312112,110.799589319279 -8.19300706626968,110.798788231202 -8.19299429992581,110.798537293576 -8.19311976873883,110.79850269889 -8.1933090511224,110.798620939451 -8.19433728092441)))
In order to filter only the records that intersect you have to use ST_Intersects in the WHERE clause:
SELECT *
FROM zona_bahaya
WHERE ST_Intersects(ST_SetSRID(ST_Point(110.18, -7.96),4326),zona_bahaya.geom);
Since you're dealing with points and polygons, perhaps you should take a look also at ST_Contains.
In case you want to fetch only the first row you must set a limit in your query - either using LIMIT 1 or FETCH FIRST ROW ONLY -, but it would only make sense combined with a ORDER BY, e.g.
SELECT *
FROM zona_bahaya
JOIN points ON ST_Intersects(points.geom,zona_bahaya.geom)
ORDER BY gid
FETCH FIRST ROW ONLY;
Demo: db<>fiddle
Guys am trying to select the top/recently third row, i tried this one but it doesn't work, where do i make mistake ?
<?php
$sql = "SELECT * FROM songs ORDER BY id ASC LIMIT 1,2;";
$result = mysqli_query($con, $sql);
$resultCheck = mysqli_num_rows($result);
if (mysqli_num_rows($result) > 0) {
while ($row = mysqli_fetch_assoc($result)) {
echo $row['artist'];
}
}
?>
Use OFFSET:
SELECT * FROM songs ORDER BY id ASC LIMIT 1 OFFSET 2
The shorthand (which you are using) is reversed, so OFFSET is first then LIMIT:
SELECT * FROM songs ORDER BY id ASC LIMIT 2,1;
Use OFFSET
Here the limit 1 It simply means and you need one record
and the offset means skip the first 2
SELECT * FROM songs ORDER BY id ASC LIMIT 1 OFFSET 2
The parameters you use after limit should be reversed.
The first parameter is offset, and the second parameter is number of record you want.
SELECT * FROM songs ORDER BY id ASC LIMIT 2,1
This is just my opinion--
Sorting like this should always be done in client software.
Extract the data - remove the ORDER BY for your SQL...
Sort it in your client, and select and return the third line to the caller.
You will get better scalability and maintainability than driving all of this through an SQL query.
This is my go-to approach when solving these types of problems through custom software and it has been proven out over time.
Think about this:
Select ID from songs
get the id's into your code, and sort them there. Then chose the third one in the list. Then:
select title, author, artist, ... from songs where ID = VALUE FROM ID ABOVE
Yes, you are hitting the database twice, but these are two very efficient queries and that will perform better as your database scales, than the fancy order by you propose.
i want to fetch data from mysql database in order of date with returning only 1 record from database,
if someone register today and other some minute after i want it to bring the first person details and not the other second
which approach among these two i should use?
mysqli_query($conn,"select * from provided_user where status = '1' AND plan = '{$_SESSION['plan']}' ORDER By date_of_ph ASC LIMIT 1");
or
mysqli_query($conn,"select * from provided_user where status = '1' AND plan = '{$_SESSION['plan']}' ORDER By date_of_ph DESC LIMIT 1");
Little explanation would be helpfull
mysqli_query($conn,"select * from provided_user where status = '1' AND plan = '{$_SESSION['plan']}' ORDER By date_of_ph ASC LIMIT 1");
This approach will work in your current scinario as it'll fetch you all record of the date you give as a parameter in ascending order so first ever record will be return first & later later added records. By limiting it to 1 you're making sure only first record for that day will return by query.
Good luck
I'm trying to limit the array mysql_fetch_assoc($query), and am unsure on how I would go about it.
$query = mysql_query('SELECT * FROM table ORDER BY id DESC');
while($output = mysql_fetch_assoc($query))
{
//do something
}
Do you add a counter or something? How do you add this counter?
I'm really confused about mysql_query and mysql_fetch_assoc. Please Help!
After your ORDER BY id DESC, add LIMIT 100 (or whatever number you want). For the next 100 rows, use LIMIT 100,100, then LIMIT 200,100 and so on.
You can limit the results directly in the SQL query. To get the top 100 records do
SELECT * FROM table
ORDER BY id DESC
LIMIT 100
Use LIMIT
SELECT * FROM table ORDER BY `id` DESC LIMIT 10;
Haven't you seen phpMyAdmin always limiting to 30?
i have following sql query, everything works fine but when i put "and posted_date<>$datetime" its not retrieving data as per given command.
$datetime="0000-00-00";
$data = mysql_query("SELECT * FROM product_table where category_id=$cat1 or
pid=$par or gpid=$gpar and posted_date<>$datetime
ORDER BY autoid desc limit $no2,$cacount")
or die(mysql_error());
please check is that line is ok maybe i am doing mistake somewhere where category_id=$cat1 or pid=$par or gpid=$gpar and posted_date<>$datetime
maybe i need two where one for or and another for and...
Thanks
Try to group your condition and use DATE()
SELECT *
FROM product_table
where (category_id=$cat1 or
pid=$par or gpid=$gpar) AND DATE(posted_date) <> DATE($datetime)
ORDER BY autoid desc
LIMIT $no2, $cacount