I've written a basic name randomizer (below) which works fine to pull 3 random first names.
<?php
$sql = "
SELECT *
FROM newNamesTable
WHERE newNamesId
ORDER
BY rand()
LIMIT 3;
";
$result = mysqli_query($conn, $sql);
$rowCount = mysqli_num_rows($result);
if ($rowCount > 0) {
while($row = mysqli_fetch_assoc($result)){
echo "<p class=\"resultname\">" . $row['firstNames'] . "</p>";
}
} else {
echo "No results found.";
}
?>
However, my table contains middle and last names as well. I am trying to write a code that pulls 3 random entries from each column and arranges them together. I've tried several variations of the code, but can't seem to wrap my head around it.
As a rough table example:
| newNamesId | firstNames | midNames | lastNames |
| ---------- | ---------- | -------- | --------- |
| 1 | Steve | James | Doe |
| 2 | Dave | John | Ray |
| 3 | Pete | Jim | Me |
| 4 | Paul | Jason | Fa |
| 5 | Bill | Justin | So |
I would like the code to mix these names together, so a result might be "Bill James Me" or "Paul Jim So"
Thanks in advance!
I have a database that looks like this:👇👇
images 🌅
| id | name | src | status |
| ------------- |---------------| ------------| ----------|
| 1 | nice sun set | 1020288.jpg | published |
| 2 | poor sun set | 1120288.jpg | published |
| 3 | best sun set | 3120288.jpg | deleted |
| ------------- |---------------| ------------| --------- |
image_views 👀
| id | image_id | browser_id🌎 | created_at |
| ------------- |---------------| ------------ | ------------------ |
| 1 | 2 | 1020288e3221 |2020-02-23 13:55:11 |
| 2 | 1 | 1120288221ww |2020-02-27 13:50:51 |
| ------------- |---------------| ------------ | ------------------ |
Now in my laravel App,
I want to get the most viewed image in the PAST last 7 days.
( i want to have a column of image_views and those views 👀 should be grouped by browser id ).
so here is what i have tried:👇👇
$image_views = DB::table('image_views')
->selectRaw('count(*) as view_count')
->where(function($query){
$query->where('image_views.image_id', 'images.id');
$query->whereDate('image_views.created_at', '>=', Carbon::now()->subDays(7)->toDateTimeString() );
});
$image = Image::select(['images.*', DB::raw('(' . $image_views->toSql() . ') as views ')])
->limit(1)
->orderBy('views', 'desc')
->where('images.status','published')
->mergeBindings($image_views)
->get();
return $image;
So unfortunately the posted above☝☝ code does not work😩
It only return blank results.
By the way i have lot of views in image_views table starting from 2⃣0⃣1⃣9⃣ to now, just that i couldn't post all here..
THE FUNNY THING IS THAT IF I CONVERT IT TO SQL AND PASTE IT IN PHPMYADMIN IT WORKS LIKE A CHARM
return $image->toSql();
//->mergeBindings($image_views)
//->get();
PLEASE SOMEONE TELL ME WHAT I AM DOING WRONG IN LARAVEL!!🙌
Given images & image_views tables
$mostViewdImage = DB::table('image_views')
->join('images', 'image_views.image_id', '=', 'images.id')
->select('browser_id', DB::raw('count(image_id) as occurrence'), 'images.*')
->where('image_views.created_at', '>=', Carbon::now()->subDays(7)->toDateTimeString())
->groupBy('image_id', 'browser_id')
->orderByRaw('occurrence DESC')->first();
dump($mostViewdImage);
//Output
"select `browser_id`, count(image_id) as occurrence, `images`.* from `image_views` inner join `images` on `image_views`.`image_id` = `images`.`id` where `image_views`.`created_at` >= ? group by `image_id`, `browser_id` order by occurrence DESC limit 1" (2.02 s)
{#261 ▼
+"browser_id": "1020288e3221"
+"occurrence": 2
+"id": 2
+"name": "poor sun set"
+"src": "1120288.jpg"
+"status": "published"
}
I've been trying to use SUM() to total up some numeric values in my database, but it seems to be returning unexpected values. Here is the PHP-side for generating the SQL:
public function calcField(string $field, array $weeks)
{
$stmt = $this->conn->prepare('SELECT SUM(`'. $field .'`) AS r FROM `ws` WHERE `week` IN(?);');
$stmt->execute([implode(',', $weeks)]);
return $stmt->fetch(\PDO::FETCH_ASSOC)['r'];
}
Let's give it some example data for you folks at home:
$field = 'revenue';
$weeks = [14,15,16,17,18,19,20,21,22,23,24,25,26];
This returns this value:
4707.92
Without seeing the data, this may have seemed to have worked, but here's the rows for those weeks:
+----+------+------+---------+-------+---------+---------+------+----------+
| id | week | year | revenue | sales | gpm_ave | uploads | pool | sold_ave |
+----+------+------+---------+-------+---------+---------+------+----------+
| 2 | 14 | 2019 | 4707.92 | 292 | 13 | 0 | 1479 | 20 |
| 3 | 15 | 2019 | 4373.32 | 304 | 13 | 0 | 1578 | 19 |
| 4 | 16 | 2019 | 4513.10 | 275 | 14 | 0 | 1460 | 19 |
| 5 | 17 | 2019 | 4944.80 | 336 | 14 | 0 | 1642 | 20 |
| 6 | 18 | 2019 | 4343.87 | 339 | 13 | 0 | 1652 | 21 |
| 7 | 19 | 2019 | 3918.59 | 356 | 14 | 0 | 1419 | 25 |
| 8 | 20 | 2019 | 4091.20 | 247 | 19 | 0 | 1602 | 15 |
| 9 | 21 | 2019 | 4177.22 | 242 | 12 | 0 | 1588 | 15 |
| 10 | 22 | 2019 | 3447.88 | 227 | 18 | 0 | 1585 | 14 |
| 11 | 23 | 2019 | 3334.18 | 216 | 15 | 0 | 1675 | 13 |
| 12 | 24 | 2019 | 4736.15 | 281 | 13 | 0 | 1388 | 20 |
| 13 | 25 | 2019 | 4863.84 | 252 | 12 | 0 | 1465 | 17 |
| 14 | 26 | 2019 | 4465.95 | 281 | 21 | 0 | 1704 | 16 |
+----+------+------+---------+-------+---------+---------+------+----------+
As you can see, the total should be far greater than 4707.92 - and I notice that the first row revenue = 4707.92.
Here's what things get weird, if I add this into the function:
echo 'SELECT SUM(`'. $field .'`) AS r FROM `ws` WHERE `week` IN('. implode(',', $weeks) .');';
Which outputs:
SELECT SUM(revenue) AS r FROM ws WHERE week IN(14,15,16,17,18,19,20,21,22,23,24,25,26);
Copying and pasting this into MySQL CLI returns:
MariaDB [nmn]> SELECT SUM(revenue) AS r FROM ws WHERE week IN(14,15,16,17,18,19,20,21,22,23,24,25,26);
+----------+
| r |
+----------+
| 55918.02 |
+----------+
1 row in set (0.00 sec)
Which, looks a lot more accurate. However, that very same SQL statement returns the first row value rather than summing the column for those weeks.
This function gets triggered by an AJAX script:
$d = new Page\Snapshot\D();
# at the minute only outputting dump of values to see what happens
echo '<pre>'. print_r(
$d->getQuarterlySnapshot(new Page\Snapshot\S(), new App\Core\Date(), $_POST['quarter'], '2019'),
1
). '</pre>';
The function $d->getQuarterlySnapshot function:
public function getQuarterlySnapshot(S $s, Date $date, int $q, string $year)
{
switch($q)
{
case 1:
$start = $year. '-01-01 00:00:00';
$end = $year. '-03-31 23:59:59';
break;
case 2:
$start = $year. '-04-01 00:00:00';
$end = $year. '-06-30 23:59:59';
break;
case 3:
$start = $year. '-07-01 00:00:00';
$end = $year. '-09-30 23:59:59';
break;
case 4:
$start = $year. '-10-01 00:00:00';
$end = $year. '-12-31 23:59:59';
break;
}
$weeks = $date->getWeeksInRange('2019', 'W', $start, $end);
foreach ($weeks as $key => $week){$weeks[$key] = $week[0];}
return [
'rev' => $s->calcField('revenue', $weeks),
'sales' => $s->calcField('sales', $weeks),
'gpm_ave' => $s->calcField('gpm_ave', $weeks),
'ul' => $s->calcField('uploads', $weeks),
'pool' => $s->calcField('pool', $weeks),
'sold_ave' => $s->calcField('sold_ave', $weeks)
];
}
So I don't overwrite the value anywhere (that I can see at least). How do I use SUM() with the IN() conditional?
As pointed out in the comments by #MadhurBhaiya:
Comma separated week_id values is passing as a single string in the query: week_id in ('1,2,3...,15') . MySQL implicitly typecasts this to 1 and thus gets the first row only. You will need to change the query preparation code
Led me to breaking up the single ? into named parameters using a foreach loop:
public function calcField(string $field, array $weeks)
{
$data = [];
$endKey = end(array_keys($weeks));
$sql = 'SELECT SUM(`'. $field .'`) AS r FROM `ws` WHERE `week` IN(';
foreach ($weeks as $key => $week)
{
$sql .= ':field'. $key;
$sql .= ($key !== $endKey ? ',' : '');
$data[':field'. $key] = $week;
}
$sql .= ');';
$stmt = $this->conn->prepare($sql);
$stmt->execute($data);
return $stmt->fetch(\PDO::FETCH_ASSOC)['r'];
}
Now each numeric value is treated individually, which, is getting me the expected value.
Yes, it is showing only first row data in your query because you have mentioned where week IN (1,2,3,4,5,6,7,8,9,10,11,12,13); and your data shows that you have week 13 and 1 to 12 does not exist in your data from IN clause of your query.
You are selecting only the row with week 13, the week 1-12 is not existing in your data. That's why the result of your query is 43.900001525878906
Solution 1:
You might want to change the values in your IN()because you are filtering your data by the column week.
SELECT SUM(`revenue`) as `r` FROM `ws` WHERE `week` IN (13,14,15,16,17,18,19,20,21,22,23,24,25);
Solution 2:
You can change the week in your where clause to id
SELECT SUM(`revenue`) as `r` FROM `ws` WHERE `id` IN (1,2,3,4,5,6,7,8,9,10,11,12,13);
I have two tables.
rp_format
+-----+--+--------------+
| fid | | recordformat |
+-----+--+--------------+
| 1 | | CD |
| 2 | | Vinyl |
| 3 | | DVD |
+-----+--+--------------+
rp_records
+----+--+--------+
| id | | format |
+----+--+--------+
| 1 | | 1 |
| 2 | | 2 |
| 3 | | 3 |
+----+--+--------+
What I would like to achieve is to display everything from "rp_format". But I would also like make a check to see if there is a "fid"-value found in "format".
Example that should be displayed on page like this:
fid recordformat
1 CD Remove this format
2 Vinyl Remove this format
3 DVD Remove this format
But let's say an "fid" value is found in "format" then I would like it to be displayed like this on page:
fid recordformat
1 CD Remove this format
2 Vinyl Can't remove this format
3 DVD Remove this format
"Remove this format / Can't remove this format" is text that will be displayed by checking if "fid" = "format" using PHP.
Here is my SQL query so far:
global $wpdb;
$rpdb = $wpdb->prefix . 'rp_format';
$rpdb2 = $wpdb->prefix . 'rp_records';
$sql = "
SELECT *
FROM $rpdb
LEFT OUTER JOIN $rpdb2 ON $rpdb.fid = $rpdb2.format
UNION
SELECT *
FROM $rpdb
RIGHT OUTER JOIN $rpdb2 ON $rpdb.fid = $rpdb2.format
WHERE $rpdb.fid IS NOT NULL
";
The issue I have with this query is that when "fid" is found in "format" (let's say it's found 10 times) every of these 10 values will be outputed also.
How can this be fixed?
Kind regards
Johan
If I understand correctly you want to display some message depending on if the data exists on rp_records or not and avoid multiple display.
Consider the following
mysql> select * from rp_format;
+------+--------------+
| fid | recordformat |
+------+--------------+
| 1 | CD |
| 2 | Vinyl |
| 3 | DVD |
| 4 | Test |
+------+--------------+
4 rows in set (0.00 sec)
mysql> select * from rp_records;
+------+--------+
| id | format |
+------+--------+
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 2 |
| 5 | 1 |
+------+--------+
So the query is
select
f.*,
case
when r.format is not null then 'Can\'t remove' else 'Remove this' end
as message
from rp_format f
left join rp_records r on r.format = f.fid
group by f.fid ;
+------+--------------+--------------+
| fid | recordformat | message |
+------+--------------+--------------+
| 1 | CD | Can't remove |
| 2 | Vinyl | Can't remove |
| 3 | DVD | Can't remove |
| 4 | Test | Remove this |
+------+--------------+--------------+
Not sure that i correctly understand your logic with found and not found format, if i wrong - add to if condition r.format IS NOT NULL instead r.format IS NULL. And i think you no need to use union, you should use join:
SELECT
r.fid,
f.recordformat,
IF(r.format IS NULL, "Can't remove this format", "Remove this format")
FROM rp_format f
LEFT JOIN rp_records r ON f.fid = r.format
GROUP BY f.fid
;
I'm sure that something like this will help you!
Im stumbling upon a problem where i need to retrieve data from the following tables
events
+-------+---------+---------+
| e_id | e_title | e_link |
+-------+---------+---------+
| 1 | Event 1 | event_1 |
| 2 | Event 2 | event_2 |
| 3 | Event 3 | event_3 |
| 4 | Event 4 | event_4 |
| 5 | Event 5 | event_5 |
+-------+---------+---------+
reservations
+-------+---------+---------+
| r_id | r_e_id | r_u_id |
+-------+---------+---------+
| 1 | 2 | 1 |
| 2 | 2 | 3 |
| 3 | 5 | 4 |
| 4 | 2 | 4 |
| 5 | 1 | 1 |
+-------+---------+---------+
users
+-------+---------+----------+
| u_id | u_name | u_gender |
+-------+---------+----------+
| 1 | One | Male |
| 2 | Two | Male |
| 3 | Three | Female |
| 4 | Four | Male |
| 5 | Five | Female |
+-------+---------+----------+
I want to display an event page with the users that are subscribed to that event, like follows:
Event 2
Users:
- One
- Three
- Four
I have the following query with the problem that this one only displays the first user (so in this case Four), which makes sense because the mysql_fetch_assoc() is not in a while() loop.
$result = mysql_query("
SELECT events.e_title, reservations.*, users.u_name
FROM events
JOIN reservations
ON events.e_id = reservations.r_e_id
JOIN users
ON reservations.r_u_id = users.u_id
WHERE events.e_link = '".mysql_real_escape_string($_GET['link'])."'
");
$show = mysql_fetch_assoc($result);
What should i change in my query to make it work the way i want?
EDIT:
The solution from Teez works perfect, but wat if i want to attach more info, say for a link? My desired output is something like this:
Event 2
Users:
- User 1 Male
- User 3 Female
- User 4 Male
How am i going to achieve that? And eventually i even want to split the users by gender. So one list for females and one for males
SECOND EDIT:
I'm stunned with the result so far, but to complete it i want to sort the users by gender, like so:
Event 2
Users male:
- User 1 Male
- User 4 Male
Users female:
- User 3 Female
but how?
Best way will be first make a 2D array containing all events with respective users
Like below:
while( $show = mysql_fetch_assoc($result))
{
$events[$show['e_id']][]=$show['u_name'];
$uid[$show['e_id']][]=$show['u_id'];
}
Then loop arround above array for displaying :
foreach($events ad $key=>$users)
{
echo "Event ".$key."<br>";
echo "Users : <br>";
foreach($users as $ukey=>$name)
{
echo " -<a href='domain.com/user/".$uid[$key][$ukey]."'>".$name."</a>;
}
}
So with each call of mysql_fetch_assoc you want to have the event details and a list of usernames? In MySQL you can use GROUP_CONCAT for this purpose, although it is quite limited and error-prone. You should rather put mysql_fetch_assoc() in a loop to build an array of users. Anyway, here is the GROUP_CONCAT solution:
$result = mysql_query("
SELECT events.e_title, GROUP_CONCAT(users.u_name) e_reservation_users
FROM events
JOIN reservations ON events.e_id = reservations.r_e_id
JOIN users ON reservations.r_u_id = users.u_id
WHERE events.e_link = '".mysql_real_escape_string($_GET['link'])."'
GROUP BY 1
");
$show = mysql_fetch_assoc($result);
$show will then be
array('e_title' => '...', 'e_reservation_users' => '...,...,...').