Where and Order By clause not working - php
So this piece of code doesn't work and I can't figure it out.
$productid = (isset($_REQUEST['productId'])) ? $_REQUEST['productId'] : '';
$query = "SELECT * FROM products WHERE productId = '$productid' ORDER BY rand() limit 3";
Perhaps try:
$productid = (isset($_REQUEST['productId'])) ? $_REQUEST['productId'] : '';
if ($productid != ''){
$query = "SELECT * FROM products WHERE productId = '$productid' ORDER BY rand() limit 3";
} else {
$query = "SELECT * FROM products ORDER BY rand() limit 3";
}
This should return all products if the productId isn't coming over.
Related
update row value based on if else condition
In php Page once we click on "Submit" button , in database we are saving order id, its working fine....
Requirement :
If payment is "Cash on delivery" , than i want to save order id in "awb_type : COD" row.... otherwise in "awb_type : PPD" row....
here is full code , track.php : https://pastebin.com/zLjpee7A , call.php : https://pastebin.com/4LkcxTYE
But orders are updating twice in table - one row in PPD & one in COD
Please let me know if you need more information....
Update 2 :
Now i tried below code, but whatever is payment_type , its saving only in awb_type column : PPD rows....
$sqlc = "select * from ecomexpress_awb WHERE status='unused' AND awb_type='COD' limit 1";
$resultc = $db_handle->runSelectQuery($sqlc);
$sqld = "select * from ecomexpress_awb WHERE status='unused' AND awb_type='PPD' limit 1";
$resultd = $db_handle->runSelectQuery($sqld);
$payment_type='';
$sqlg="SELECT * FROM do_order where payment_type='".$payment_type."'";
$resultg = $db_handle->runSelectQuery($sqlg);
if($payment_type=="Cash on delivery")
{
$awb = $resultc[0]['awb'];
$sqle = "update ecomexpress_awb set orderid = '".$order_id."',status='used' WHERE awb ='".$awb."' limit 1";
$resulte = $db_handle->runSelectQuery($sqle);
}
else
{
$awba = $resultd[0]['awb'];
$sqlf = "update ecomexpress_awb set orderid = '".$order_id."',status='used' WHERE awb ='".$awba."' limit 1";
$resultf = $db_handle->runSelectQuery($sqlf);
}
Before I did't binded the payment_type with order_id, below code worked for me :
if(isset($_POST['order_id']) && $_POST['order_id']!='')
{
$order_id = $_POST['order_id'];
$payment_type=$_POST['payment_type'];
$sqlg="SELECT * FROM do_order where payment_type='".$payment_type."'";
$resultg = $db_handle->runSelectQuery($sqlg);
if($payment_type=="Cash on delivery")
{
$sqlc = "select * from ecomexpress_awb WHERE status='unused' AND awb_type='COD' limit 1";
}
else
{
$sqlc = "select * from ecomexpress_awb WHERE status='unused' AND awb_type='PPD' limit 1";
}
$resultc = $db_handle->runSelectQuery($sqlc);
remove duplicate camma from mysql query
I am trying to fetch data with mulyiple value with Mysql IN operator but problem I am getting to much (,,,).
Here is my query :
$get_id = "select rel_blog from pages";
$resu = mysql_query($get_id);
$p_id="";
$rel_b="";
$i = 1;
while ($page_id = mysql_fetch_array($resu)){
$p_id.= $page_id['page_id'];
$rel_b.= $page_id['rel_blog'];
}
$p_id."<br>";
echo $rel_b."<br>";
echo $getblog = "SELECT * FROM pages WHERE rel_blog IN ($rel_b) order by add_date desc limit 7";
Ouery output is Like this this is not proper form so please help me .
SELECT * FROM pages WHERE rel_blog IN
(,114,93,126108default,,,,default,,,,default,,default,,,default,,default,,,,,,,default,,default,,,default,,default,,,,,,,,,,,,,,,,,,,,,,,,,,123,145,144,148,81,107default,,,,,default,,,,,,145,138,118default,,,,,,default,,,,,,,default,,,,,,,default,,,,,,,default,,,118default,,,,default,,,,,,,,default,,,,,,,,,default,,default,,,,,,,,default,,,,,,,,,default,,default,,,,,default,,,,,,default,,,,,,,,,default,,,,,,,,default,,,,,default,,,,,,,123,122,125,113default,,,default,,,default,,124,145140default,,,,,,,,,,,,,default,,,,,,,,default,,,default,,,default,,,,default,,,,default,,default,,,,default,,,default,,,default,,default,,,,,,,default,,,,,,default,,,,default,,,,,,default,,,default,,,,137default,,,,,,,default,,,default,,,default,,,,,,default,,,,,,,,,,default,,,,,,,,82,83default,,,,,,default,,,,default,,,,default,,,default,,,default,,,,default,,,,default,,,,default,,,,default,,,default,,,,default,,,,default,,,default,,,default,,,,,,default,,,,,,default,,,,,default,,,default,,,,,default,,,,,default,,,,default,,,default,,default,,default,,default,,,,,,,default,,,,default,,default,,,,default,,,,default,,,,default,,,,,default,,,,default,,,,,default,,,,,,,default,,,,default,,,,,default,,,,,,default,,,,,,,default,,,,,,default,,,,,,,default,,default,,default,,,,,default,,,default,,,default,,,default,,,,default,114,default,,,,,,117,116default,,,,,default,,,,117,116default,,,,default,,,,default,,,,,default,,,,default,,,,,default,,,,default,,,default,,default,,,,,,default,,,,,,default,,,,,108default,,,,118,129,121,143,80,82,81,148,117,146,107,88,118,82,80,81,148,143,123,118,107,142,116,110,128,127,111,109,125,113,123,118,85,118,128,109,126,93,114,82,142,108,111,90,113,123,144,148,108,107,142,116,115,110,128,127,113,118,144,146,80,148,107,143,135,125,143,110,115,118,132,146,80,123,81,148,107,116,108,109,125,135,113,123,144,118,116,108,127,147,125,123,144,129,107,142,112,116,135,113,123,144,132,118,107,85,123,144,118,82,148,107,123,132,146,148,107,108,122,89,136,146,80,81,117,148,142,107,110,147,119,82,80,145,129,146,80,148,107,111,109,125,113,123,118,148,81,107,131,115,109,121,125,135,113,123,144,107,131,126,93,141,114,124,139,113,91,144,118,81,117,148,107,142,115,143,135,91,118,142,116,87,143,140,123,144,132,145,129,146,82,80,117,91,118,148,137,113,141,93,143,136,123,144,146,82,118,148,85,112,108,127,122,87,143,141,91,144,146,80,82,81,117,148,107,115,109,91,129,146,82,80,117,148,81,142,107,110,130,138,89,126,113,default,default,118,146,82,81,148,107,142,115,109,126,default,123,144,145,80,146,82,81,117,142,128,138,135,93,140,123,144,145,132,82,80,117,83,142,130,140,145,129,82,80,81,108,111,138,89,143,125,145,123,118,82,80,81,117,88,112,108,147,139,119,140,123,144,118,80,82,81,142,107,85,108,115,114,144,118,129,146,80,81,83,120,148,107,142,128,127,110,115,91,123,145,82,117,146,81,80,148,82,80,117,81,148,83,120,107,142,88,131,118,129,146,80,117,107,83,88,142,130,89,125,139,134,113,145,144,118,132,123,82,80,146,81,148,83,123,91,137,140,134,139,113,141,124,93140,150,150)
order by add_date desc limit 7
Actually I can't figure out how you are getting even a single comma... This is how you can try it out.
$get_id = "select rel_blog,page_id from pages";
$resu = mysql_query($get_id);
$p_id="";
$rel_b="";
$i = 1;
while ($page_id = mysql_fetch_array($resu)){
$p_id.= $page_id['page_id'];
if($page_id['rel_blog']!=="" && $page_id['rel_blog']==="default") {
$rel_b.= $page_id['rel_blog'] .",";
}
}
$p_id."<br>";
$rel_b = substr($rel_b,0,-1); // get rid of the last comma
echo $rel_b."<br>";
echo $getblog = "SELECT * FROM pages WHERE rel_blog IN ($rel_b) order by add_date desc limit 7";
You can do this before your query.
$rel_b = preg_replace('/,+/', ',', trim($rel_b, ','));
This will remove repeated commas as well as commas from beginning and end of the string.
Try using implode():
$get_id = "select rel_blog from pages";
$resu = mysql_query($get_id);
$p_id = array();
$rel_b = array();
$i = 1;
while ($page_id = mysql_fetch_array($resu)){
$p_id[] = $page_id['page_id'];
$rel_b[] = $page_id['rel_blog'];
}
$p_id = implode(',', $p_id);
$rel_b = implode(',', rel_b);
echo $getblog = "SELECT * FROM pages WHERE rel_blog IN ($rel_b) order by add_date desc limit 7";
sql statement select from DB limit didn't work
i have a question which is my limit statement didn't work i want the content select from database and limit the show content in 40 only but it didn't work
here is my SQL statement with php code
$chatroomID=$_GET['chatroomID'];
$userID = $_SESSION['id'];
$sql="SELECT * FROM chatroom_chat WHERE chatroom_id ='$chatroomID'";
$result1 = mysqli_query($connection, $sql) or die(mysqli_error($connection));
while ($row = mysqli_fetch_array($result1)) {
$chat = $row['chat_id'];
$sql3 ="SELECT * FROM (
SELECT * FROM chat WHERE id = '$chat' ORDER BY id DESC LIMIT 0,40
) sub
ORDER BY id ASC ";
$getChatData = mysqli_query($connection,$sql3) or die(mysqli_error($connection));
/*here have statement to get username*/
while($row3 = mysqli_fetch_array($getChatData)) {
echo "<div>all content</div>";
}
}
does my code have any syntax error? i no sure why it didn't work
SELECT * FROM ( SELECT * FROM chat WHERE id = '$chat' ORDER BY id DESC LIMIT 40 ) sub ORDER BY id ASC
PHP/MySQL using ORDER BY with a LIMIT
I created a pagination by roughly following this link:
http://www.awcore.com/dev/1/3/Create-Awesome-PHPMYSQL-Pagination_en#toggle
quite cool. Although I have an issue with my query.
It works fine like this:
require 'includes/function.php';
$page = (int) (!isset($_GET["page"]) ? 1 : $_GET["page"]);
$limit = 8;
$startpoint = ($page * $limit) - $limit;
$statement = "cars WHERE deleted = 'no'";
$query = mysql_query("SELECT * FROM {$statement} LIMIT {$startpoint}, {$limit} ");
while ($row = mysql_fetch_assoc($query)) {
However when I try to add an ORDER BY to this, like so:
require 'includes/function.php';
$page = (int) (!isset($_GET["page"]) ? 1 : $_GET["page"]);
$limit = 8;
$startpoint = ($page * $limit) - $limit;
$statement = "cars WHERE deleted = 'no'";
$query = mysql_query("SELECT * FROM {$statement} LIMIT {$startpoint}, {$limit} ORDER BY model DESC");
while ($row = mysql_fetch_assoc($query)) {
or just change the statement like this:
$statement = "rcr_cars WHERE deleted = 'no' ORDER BY model DESC";
I get this error:
Warning: mysql_fetch_assoc() expects parameter 1 to be resource, boolean given in filepath/myfile.php on line 79.
Line 79 is this line:
while ($row = mysql_fetch_assoc($query)) {
Can anyone tell me how I am not using the ORDER BY correctly, its got me puzzled. :/
Try the query as below
$query = mysql_query("SELECT * FROM {$statement} ORDER BY model DESC LIMIT {$startpoint}, {$limit} ");
Where you have gone wrong is LIMIT should come after ORDER BY. Read more
Change the query:
$query = mysql_query("SELECT * FROM {$statement} ORDER BY model DESC LIMIT {$startpoint}, {$limit}") ;
$query = mysql_query("SELECT * FROM {$statement} ORDER BY model DESC LIMIT {$startpoint}, {$limit} ");
MySQL: Combining two repetitive queries to make WHERE clause dynamic
How can I combine these two queries into one so I don't have to repeat the same lines again and again?
if(empty($cat_id))
{
$sql = "
SELECT *
FROM root_category_contacts
ORDER by cat_order ASC
";
$items_category = $connection->fetch_all($sql);
}
else
{
$sql = "
SELECT *
FROM root_category_contacts
WHERE root_category_contacts.cat_id != ?
ORDER by cat_order ASC
";
$items_category = $connection->fetch_all($sql,array($cat_id));
}
I don't need WHERE clause when I don't have the cat_id.
Is it feasible?
Test if ? is null or equals cat_id. Something like this:
Edit based on xdazz's comment. And assuming that cat_id > 0
$sql = "
SELECT *
FROM root_category_contacts
WHERE root_category_contacts.cat_id != ?
ORDER by cat_order ASC"
if(empty($cat_id)) {
$cat_id = 0;
}
$items_category = $connection->fetch_all($sql,array($cat_id));
if(empty($cat_id)) $where = ""; else $where = "WHERE root_category_contacts.cat_id != '$cat_id'" $sql = " SELECT * FROM root_category_contacts $where ORDER by cat_order ASC "; $items_category = $connection->fetch_all($sql);