I need to check if a record is either 0 or higher/equal current time. For this IN doesn't work, anyone have an idea?
This is my SQL:
$sql = "SELECT * FROM domains WHERE tld='dk' AND whoisexpire !='' AND (whoisupdate='0' OR whoisupdate>='".time()."') AND majrefd>=25 AND majtf>=10 ORDER BY whoisexpire LIMIT 25";
Updated SQL line (removed quotes around integer value)
SELECT * FROM domains WHERE tld='dk' AND whoisexpire !='' AND (whoisupdate=0 OR whoisupdate>=".time().") AND majrefd>=25 AND majtf>=10 ORDER BY whoisexpire LIMIT 25
To clarify some things up, the issue is that it keeps returning the same domains, even though a record does not match with the SQL OR whoisupdate>=".time()."
How about this?
$sql = "SELECT * FROM domains
WHERE tld='dk'
AND whoisexpire !=''
AND (whoisupdate = 0 OR whoisupdate >= NOW())
AND majrefd>=25
AND majtf>=10
ORDER BY whoisexpire
LIMIT 25";
Related
i am trying to get data from one table, I received data from one table but there is some problem in my first table i have 6 query and i allow max 12 query in result. In my query i received repeat query in my SQL please have a look. sorry for bad English.
$query = $this->db->query("SELECT * FROM yt_sub,done WHERE yt_sub.current < yt_sub.total AND done.link != yt_sub.url AND done.uid != '$id' ORDER BY RAND() LIMIT 12");
Using this SQL query i received 12 rows but according to this sql only 6 rows pass throw it, but i received 6 rows.
Use DISTINCT see below eg
$query = $this->db->query("SELECT DISTINCT * FROM yt_sub,done WHERE yt_sub.current < yt_sub.total AND done.link != yt_sub.url AND done.uid != '$id' ORDER BY RAND() LIMIT 12");
use GROUP BY
$query = $this->db->query("SELECT * FROM yt_sub,done WHERE yt_sub.current < yt_sub.total AND done.link != yt_sub.url AND done.uid != '$id' GROUP BY done.uid ORDER BY RAND() LIMIT 12");
I have the following query, which doesn't work:
$sql = "SELECT dma, COUNT(*) as dma_count, round(dma_count/32434 * 100) as dma_percent FROM {$table} where dma != '0' GROUP BY dma ORDER BY dma_count DESC;";
The reason (I know) it doesn't work is because I'm using dma_count in this part round(dma_count/32434 * 100).
What's the correct way to do this?
EDIT:
Additional challenge. Instead of using 32434, I want to use a variable. I get the variable like this:
$get_total = "SELECT count(DISTINCT `exuid`) from {$table};";
$total = $dbh->query($get_total)->fetchAll(PDO::FETCH_ASSOC);
so my query becomes (with the fix recommended in the comments)
$sql = "SELECT dma, COUNT(*) as dma_count, round(COUNT(*)/{$total} * 100) as dma_percent FROM {$table} where dma != '0' GROUP BY dma ORDER BY dma_count DESC;";
This doesn't work because I think $total is in the wrong format. How can I fix this?
EDIT AGAIN:
Got it! $total is just the count of my rows, so I have this instead.
SELECT dma, COUNT(*) as dma_count, round(COUNT(*)/(SELECT COUNT(*) FROM {$table}) * 100,2) as dma_percent FROM {$table} where dma != '0' GROUP BY dma ORDER BY dma_count DESC;"
you can use COUNT(*) in the equation instead of the alias, or the finial answer a sub query. In general avoid sub queries if you can use a join.
I'm trying to return the row from my database, with the highest UID, where the URL column matches http://urltocheck.com.
I've tried all manner of things I can think of, and this is the closest I can get, but I'm getting an SQL syntax error.
My Table is called Adam, and I have the columns... UID (unique), URL (plus loads more). I'm trying to access the MySQL databse via PHP.
$query = "SELECT * FROM `Adam`
WHERE URL='http://urltocheck.com'
ORDER BY `UID` ASC;
LIMIT 1;";
Can anyone help please?
You shoul use order DESC and remove the ";" after ASC
$query = "SELECT * FROM `Adam`
WHERE URL='http://urltocheck.com'
ORDER BY `UID` DESC
LIMIT 1";
Try like this. Also, remove ; at this line ORDER BY UID ASC; (didn't noticed that earlier) because of which limit 1 not coming to picture.
SELECT * FROM `Adam`
WHERE URL='http://urltocheck.com'
and `UID` = (select max(`uid`) from `Adam`)
with the highest UID
You should order by UID desc and limit to 1.
You can also ORDER BY MAX ID.
<?php
$query = "SELECT * FROM `Adam`
WHERE URL='http://urltocheck.com'
ORDER BY MAX(`UID`) DESC;";
This is executed faster.
$query = "SELECT * FROM `Adam`
WHERE URL='http://urltocheck.com'
ORDER BY MAX(`UID`);";
?>
I started using only 1 query but then I wanted some to show up more than others so I ended up doing more queries but it, really slows down the load time, is there a way I can do them all in a single query but have them all with their separate variable name?
$sql23 = "SELECT * FROM monsters WHERE rare='0' AND level<='".$row['level']."' ORDER BY RAND() LIMIT 1;";
$result23 = mysqli_query($link,$sql23) or die(mysqli_error());
$battle_get23 = mysqli_fetch_array($result23);
$boss = "SELECT * FROM monsters WHERE rare='1' AND level<='".$row['level']."' ORDER BY RAND() LIMIT 1;";
$boss = mysqli_query($link,$boss) or die(mysqli_error());
$boss = mysqli_fetch_array($boss);
$rare1 = "SELECT * FROM monsters WHERE rare='2' AND level<='".$row['level']."' ORDER BY RAND() LIMIT 1;";
$rare1 = mysqli_query($link,$rare1) or die(mysqli_error());
$rare1 = mysqli_fetch_array($rare1);
$rare2 = "SELECT * FROM monsters WHERE rare='3' AND level<='".$row['level']."' ORDER BY RAND() LIMIT 1;";
$rare2 = mysqli_query($link,$rare2) or die(mysqli_error());
$rare2 = mysqli_fetch_array($rare2);
$rare3 = "SELECT * FROM monsters WHERE rare='4' AND level<='".$row['level']."' ORDER BY RAND() LIMIT 1;";
$rare3 = mysqli_query($link,$rare3) or die(mysqli_error());
$rare3 = mysqli_fetch_array($rare3);
$rare4 = "SELECT * FROM monsters WHERE rare='5' AND level<='".$row['level']."' ORDER BY RAND() LIMIT 1;";
$rare4 = mysqli_query($link,$rare4) or die(mysqli_error());
$rare4 = mysqli_fetch_array($rare4);
$rare5 = "SELECT * FROM monsters WHERE rare='6' AND level<='".$row['level']."' ORDER BY RAND() LIMIT 1;";
$rare5 = mysqli_query($link,$rare5) or die(mysqli_error());
$rare5 = mysqli_fetch_array($rare5);
$rare6 = "SELECT * FROM monsters WHERE rare='7' AND level<='".$row['level']."' ORDER BY RAND() LIMIT 1;";
$rare6 = mysqli_query($link,$rare6) or die(mysqli_error());
$rare6 = mysqli_fetch_array($rare6);
$rare7 = "SELECT * FROM monsters WHERE rare='8' AND level<='".$row['level']."' ORDER BY RAND() LIMIT 1;";
$rare7 = mysqli_query($link,$rare7) or die(mysqli_error());
$rare7 = mysqli_fetch_array($rare7);
$rare8 = "SELECT * FROM monsters WHERE rare='9' AND level<='".$row['level']."' ORDER BY RAND() LIMIT 1;";
$rare8 = mysqli_query($link,$rare8) or die(mysqli_error());
$rare8 = mysqli_fetch_array($rare8);
$rare9 = "SELECT * FROM monsters WHERE rare='10' AND level<='".$row['level']."' ORDER BY RAND() LIMIT 1;";
$rare9 = mysqli_query($link,$rare9) or die(mysqli_error());
$rare9 = mysqli_fetch_array($rare9);
First. You are barking the wrong tree.
Combining a number of slow queries in one won't make them fast. Overhead for running a query is NOT that important as most php users think. If query itself is fast, no matter how many times it is called (within sane numbers of course). If query is slow, no combining would help.
You have to take care for the queries themselves instead of trying to combine them. Thus, to solve your problem you have to provide a lot more info:
Define "really slows" in certain numbers. For all queries in one and for the every single query.
Provide database schema and data amounts.
Provide result of one of the queries run perpended with EXPLAIN keyword
You could give your monsters a random number once a day or once an hour, so
update monsters set sortorder=rand();
It might help to have an index on that key sortorder.
Then you could calculate for every read a random number in php:
$rand = mt_rand(0,1); // or however mt_rand() is called
Then you could select:
$sql23 = "SELECT * FROM monsters WHERE rare='0' AND level<='".intval($row['level'])."' ORDER BY (sortorder-$rand) DESC LIMIT 1;";
$result23 = mysqli_query($link,$sql23) or die(mysqli_error());
$battle_get23 = mysqli_fetch_array($result23);
From SQL it is easy to create a solution with only one select, but that needs a temporary table to support undisturbed random.
Use a category-table
CREATE TABLE raretype (id int(11), name varchar(255), sortkey float default 0, primary key(id));
Put your rares in there:
INSERT INTO raretype (id, name) values (0, 'battle_get23'),(1,'boss'),(2,'rare1'),...
Create a random sortorder for your read:
DROP TEMPORARY TABLE IF EXISTS tmp_rare_sort;
CREATE TEMPORARY TABLE tmp_rare_sort (raretype int(11) not null primary key, sortorder float);
INSERT INTO tmp_rare_sort SELECT id, rand() from raretype;
Read them out:
SELECT rt.name as type, m.*
FROM raretype rt
INNER JOIN tmp_rare_sort rts on rts.raretype = rt.id
LEFT JOIN monsters m on m.id =
( select id from monsters imo where imo.rare = rt.id
and imo.level <= {intval($level)}
order by abs(sortorder - rts.sortorder) desc
limit 1
)
You should read out an array as a result:
$allMonsters = array();
while($line = $rs->next()){
$allMonsters[$line['type']] = $line;
}
So that $allMonsters['boss'] gives the boss (with an additional field 'type', that should not hurt).
If you really want it as single variables, you could extract() this array.
Hope that helps!
If some syntax errors, please create a SQL-fiddle and I'll check. Just no time to create the tables myself. ;-)
1) take out all of your order by RAND() and limit 1
2) do randomization after query
$bossSql = "SELECT * FROM monsters WHERE rare='1' AND level<='".$row['level']."' ";
$bossRs = mysqli_query($link,$bossSql) or die(mysqli_error());
$bossArray = mysqli_fetch_array($bossRs);
//just saw you had limit in your sql, edited
//shuffle($bossArray);
$randomBosskey = array_rand($bossArray);
$randomBoss = $bossArray[$randomBossKey];
edit: thank you #flaschenpost for pointing out the potential problem, which inspired me to come up with a possibly quicker solution (under certain assumption which might not be true)
Solution 2) cache the table
From the looks of the code I think there is a high chance that you would need to do the query for monster action many times throughout the whole program lifetime.
Instead of getting a new random monster from DB everytime, will it be better to do full query:
SELECT * FROM monsters
save it in a variable and then pick the a random monster according to rarity and level from the same variable everytime you need a monster? But this method takes up unknown amount of memory depends on your table size and might be faster/slower than your original depending on how many "random monster" query you are actually using in your program. It might also depends on the "power" of your machine, assuming your DB and server are not in the same machine and the 2 machine have significant difference in processing power.
Get the latest 4 donations that come into the system .
Donation IDs are auto incremented (201 , 202, 203 , 204) .. therefore I wanted to order by DESC to get the latest 4 donations.
$resultsdonations = mysql_query("SELECT * FROM donationstable ORDER BY 'donation_id' DESC LIMIT 0,4 ");
Remove the apostrophes around 'donation_id' and the 0 is unnecessary in the LIMIT clause considering your requirement:
$resultsdonations = mysql_query(
"SELECT * FROM donationstable ORDER BY donation_id DESC LIMIT 4");
Try this:
$resultsdonations = mysql_query("SELECT * FROM donationstable ORDER BY donation_id DESC LIMIT 0,4 ");
(drop the ' around the donation_id column)
You don't need the quotes around donation_id. Just use .. BY donation_id DE ..
As the other answers have pointed out, you must remove the quotes from around donation_id.
As it currently stands, you are not sorting by the value in the donation_id column, but rather by the string literal 'donation_id', which is constant for each record and therefore results in an indeterminate ordering.