PHP - Pulling Multiple Rows By Id In A Single Query Using While Statement

I have a table that contains the schools in my system:

schools
id
name
location
...

Then, I have three tables that use the id of this table:

schoolAdmins
schoolID

schoolContests
schoolID

students
schoolID

When I go to delete a school from my system, I want to check to see if that school is connected to any of these three other tables first.  This is what I tried (but obviously failed because I'm here) where I'm passing the query the $studentID in question:

SELECT * FROM schoolAdmins, schoolContests, students WHERE (schoolAdmins.schoolID = $schoolID) OR (schoolContests.schoolID = $schoolID) OR (students.schoolID = $schoolID)

I'm really new to the concept of querying multiple tables in a single statement, so I'm just kind of guessing at this point.  Thanks in advance.

Ok so I am pretty good with mysql and performing queries to get the data that I need. However, I have a question for any of you gurus out there that may be able to help me with an issue that I always run into with certain types of queries. Say I have 2 tables like this:

Galleries
id name 1 My Photos
Gallery Photos
id gallery_id photo 1 1 photo1.jpg 2 1 photo2.jpg 3 1 photo3.jpg
Now usually when I pull this info from the database I have to do 2 separate queries in order to get the data and then link them so I would do something like.


<?php
//make the gallery query
$query = "SELECT * FROM galleries";
$results = mysql_query($query);

//setup an array for the galleries data
$gallery_data = array();

//loop through the galleries
for($i=0;$i<mysql_num_rows($results);$i++){
//add the gallery info to the gallery data array
$gallery_data[$i] = mysql_fetch_array($results);

//make the photos query with the gallery id
$photo_query = "SELECT * FROM gallery_photos WHERE gallery_id='".mysql_real_escape_string($gallery_data[$i]['id'])."'";
$photo_results = mysql_query($photo_query);

//setup the photos array
$photo_data = array();

//put the photos in the array
for($n=0;$n<mysql_num_rows($photo_results);$n++){
$photo_data[$n] = mysql_fetch_array($photo_results);
}

//add the photos to the gallery array
$gallery_data[$i]['photos'] = $photo_data;
}

//now to display it is like this
if(is_array($gallery_data)){
foreach($gallery_data as $gallery){
echo $gallery['name'];

//show the photos
if(is_array($gallery['photos'])){
foreach($gallery['photos'] as $photo){
echo $photo['photo'];
}
}
}
}
?>


So my question is there a way to get all of this data at one time. I know how to do multiple queries in one and to do joins but they can only return one row as far as I know of. The only other way that I know how to do this is by ordering them by name and selecting them directly from the photos table and then just getting the gallery name like this:


SELECT *,(SELECT name FROM galleries WHERE id=gallery_photos.id) AS gallery_name FROM gallery_photos ORDER BY gallery_id


Then I could just do one loop and see if the name has changed and if so to output the new name. But I would like to know if there is a way to get a second set of results as an array from a query so I could just select the galleries and photos all in one query. Any help is appreciated.

I insert data in mysql table row using multiple method : 1#2#3 . 1 is ID of country, 2 is Id of state, 3 is ID of town . now i have this table for real estate listings. for each list(home) i have country/state/town (1#2#3). in country table i have list of country - in country table i have list of state - in country table i have list of town. i need to The number of houses in country / state / town . my mean is :
Code: [Select]
USA [ 13 ] <!-- This Is equal of alabama+alaska+arizona -->
----Alabama [8] <!-- This Is equal of Adamsville+Addison+Akron -->
-------Adamsville [2]
-------Addison[5]
-------Akron[1]
......(list of other City)
----Alaska [ 3 ]
-------Avondale[3]
......(list of other City)
----Arizona [ 2 ]
-------College[2]
......(list of other City)
Lisintg Table :

Code: [Select]
ID -- NAME -- LOCATION -- DATEJOIN -- ACTIVE
 1 -- TEST -- 1#2#3    -- 20110101 -- 1
 2 -- TEST1 -- 1#2#3    -- 20110101 -- 1
 3 -- TEST2 -- 1#3#5    -- 20110101 -- 1
 4 -- TEST3 -- 1#7#6    -- 20110101 -- 1
Country Table :

Code: [Select]
id       -- name 
 1        -- USA 
stats Table :

Code: [Select]
id        -- countryid -- name 
 1        -- 1             -- albama
 2        -- 1             -- alaska
 3        -- 1             -- akron
town Table :
Code: [Select]
id        -- countryid -- statsid -- name 
 1        -- 1             -- 1         -- adamsville
 2        -- 1             -- 1         -- addison
 3        -- 1             -- 1         -- akron
Thanks For Any Help.

I'm trying to write a php page that displays data from a JOIN query for a specific ID

table view

brandinfo

ID, brand, discounttype

1, antioni, no discount

brandproducts

brandID, producttype, price

1, Tshirt, 20.00
1, Pants, 30.00
1, Shoe, 40.00


the returned result is

1 antioni, no discount, Tshirt, 20.00,
2 antioni, no discount, Pants, 30.00
3 antioni, no discount, Shoe 40.00

The way I want the page to be displayed is

------------------


Antioni (at the top)

Table

1. Tshirt 20.00
2. Pants 30.00
3. Shoe 40.00


no discount (at the bottom)
----------------------------

How should I construct the PHP page from the result since they're retrieved as rows?

Given the below 3 database tables I am trying to construct a SQL query that will give me the following result:

customer_favourites.cust_id
customer_favourites.prod_id OR product.id
product.code
product.product_name
product.hidden
product_ section.section_id (MUST BE ONLY THE ROW WITH THE LOWEST SECTION ID, I.E. ROW ID #44108)
product_ section.catpage (MUST BE ONLY THE ROW WITH THE LOWEST SECTION ID, I.E. ROW ID #44108)
product_ section.relative_order (MUST BE ONLY THE ROW WITH THE LOWEST SECTION ID, I.E. ROW ID #44108)

I currently have....

SELECT customer_favourites.cust_id, customer_favourites.prod_id, product.code, product.product_name, product.hidden, product_section.section_id, product_section.relative_order, product_section.catpage  
FROM customer _favourites  
INNER JOIN product ON customer_favourites.prod_id = product.id  
INNER JOIN product_section ON product_section.product_code = product.code  
WHERE `cust_id` = '17' AND `hidden` = '0' GROUP BY `code`  
ORDER BY `section_id` ASC, `relative_order` ASC, `catpage` ASC LIMIT 0,30

This gives me what I want but only sometimes, at other times it randomly selects any row from the product_section table.

I was hoping that by having the row I want as the last row (most recent added) in the product_section table then it would select that row by default but it is not consistent.

Somehow, I need to be able to specify which row to return in the product_section table, it needs to be the row with the lowest section_id value or it should by the last row (most recent).

Pulling my hair out so any help is gratefully received.  
customer_favourites

id     cust_id   prod_id
70    4            469
product

id        code           product_name    hidden
469    ABC123     My Product        0
product_section

id                  section_id      catpage    product_code    relative_order     recommended
44105         19                   232            ABC123             260                    1
44106          3                     125            ABC123              87                      1
44107          2                     98              ABC123             128                     1
44108          1                    156             ABC123             58                        0

 

Right now I am using code such as this:

$query = "SELECT somevalue FROM sometable WHERE id=1"
$result = mysql_query($update) or die ('Error in query: ' . mysql_error());

$somevalue = '';

if (mysql_num_rows($result) == 1)
  {
  while($row = mysql_fetch_assoc($userstatsresult))
    {
    $somevalue = $row['somevalue'];
    }
  }

echo $somevalue;

Is there a short-hand method to get that single value without the IF/WHILE stuff?

I'm ok with PHP but probably not half as good as some of you guys on here.

I am basically trying to find a way to grab a line from a huge and I mean huge text file.... its basically a list of keywords I want to call by line number but without preferably going through them all before I get to that line.....otherwise couldmcrash my server obviously.

At the moment im using this

Code: [Select]
$lines = file('http://www.mysite.com/keywords.txt');

// Loop through our array, show HTML source as HTML source; and line numbers too.
foreach ($lines as $line_num => $line) {
echo "$line_num";
}
This works but im sure theres gotta be a better way of doing to save on usuage because this is putting the whole file into the memory and if I can simply say to php give me line number 97, would umm RULE....

Hope you guys can come up with a solution as your much smarter than me ty

Hi all,

I have a database which contains customer details. We have a php script which pulls the records from the database and puts them into a table on the page. Currently, it fetches all the customer records. This wasn't such a problem when there was only a few customers in the db but this is a bit higher now! Is there any way I can modify the script to only show 20 per page and add links to page 2 etc along the bottom, which can be clicked to show the next 20 and so on?

I can post my current code if need be, Thanks.

I have a mysql table that looks like this:

id int(11) autoincrement
artist varchar(50)
title varchar(50)

I need to check for any rows that have the same titles.
So for example, if I had the following rows:

1 - Bob - Hello World
2 - Charlie Brown - Theme Song
3 - Joe - Hello World
4 - Joe - Is Cool
5 - Bob - Magic Dude

The query would display Row 1, and Row 3 as duplicates. Any idea how I can do something like this?

Hiya peeps,

I have been sent this today;

select company_map.*, map.*,addresses.address,addresses.nomitative,addresses.number, c.postcode from company_map join map on map.id=company_map.map_id join company c on c.company_id=company_map.company_id join addresses on addresses.address_id=c.address_id where company_map.company_id='79' and company_map.ui_shell_id <> 0 and language_id='en'

when I print all the results from this I get a postcode, I was wondering if anyone could read this code and simplify it for me, I really need to know what table this query is pulling the postcode from.

Many many thanks,

James.

Ok I have a fairly straight forward question. I am designing a baseball website and I am trying to add in a schedule, here is what I have:

Data Bases
1) Teams DB - Each team has a unique team ID, location, logo, and owner
2) Schedule DB - Each game has a unique game ID, and the schedule is set up like this: AWAY = Team ID, HOME = Team ID....

So I assume I am using the JOIN command to pull the schedule from both databases, any idea how the SQL command would look?

Ok I'm trying to insert multiple rows by using a while loop but having problems. At the same time, need to open a new mysql connection while running the insert query, close it then open the previous mysql connection.

I managed to insert multiple queries before using a loop, but for this time, the loop does not work? 
I think it is because I am opening another connection... yh that would make sense actually?

Here is the code:


$users = safe_query("SELECT * FROM ".PREFIX."user");
       while($dp=mysql_fetch_array($users)) { 
          
   $username = $dp['username'];
 $nickname = $dp['nickname'];
 $pwd1 = $dp['password']; 
 $mail = $dp['email'];
 $ip_add = $dp['ip'];
 $wsID = $dp['userID'];
 $registerdate = $dp['registerdate'];
 $birthday = $dp['birthday'];
 $avatar = $dp['avatar'];
 $icq = $dp['icq']; 
 $hp = $dp['homepage'];
 
echo $username." = 1 username only? :(";
      

// ----- Forum Bridge user insert -----

$result = safe_query("SELECT * FROM `".PREFIX."forum`");
$ds=mysql_fetch_array($result);
$forum_prefix = $ds['prefix'];
define(PREFIX_FORUM, $forum_prefix);
define(FORUMREG_DEBUG, 0);

$con = mysql_connect($ds['host'], $ds['user'], $ds['password']) or system_error('ERROR: Can not connect to MySQL-Server');
$condb = mysql_select_db($ds['db'], $con) or system_error('ERROR: Can not connect to database "'.$ds['db'].'"');
                
include('../_phpbb_func.php');
$phpbbpass = phpbb_hash($pwd1);
$phpbbmailhash = phpbb_email_hash($mail);
$phpbbsalt = unique_id();

safe_query("INSERT INTO `".PREFIX_FORUM."users` (`username`, `username_clean`, `user_password`, `user_pass_convert`, `user_email`, `user_email_hash`, `group_id`, `user_type`, `user_regdate`, `user_passchg`, `user_lastvisit`, `user_lastmark`, `user_new`, `user_options`, `user_form_salt`, `user_ip`, `wsID`, `user_birthday`, `user_avatar`, `user_icq`, `user_website`) VALUES ('$username', '$username', '$phpbbpass', '0', '$mail', '$phpbbmailhash', '2', '0', '$registerdate', '$registerdate', '$registerdate', '$registerdate', '1', '230271', '$phpbbsalt', '$ip_add', '$wsID', '$birthday', '$avatar', '$icq', '$hp')");
if (FORUMREG_DEBUG == '1') {
echo "<p><b>-- DEBUG -- : User added: ".mysql_affected_rows($con)."<br />";
       echo "<br />-- DEBUG -- : Query used: ".end($_mysql_querys)."</b></p><br />";
      
       $result = safe_query("SELECT user_id from ".PREFIX_FORUM."users WHERE username = '$username'");
       $phpbbid = mysql_fetch_row($result);
safe_query("INSERT INTO `".PREFIX_FORUM."user_group` (`group_id`, `user_id`, `group_leader`, `user_pending`) VALUES ('2', '$phpbbid[0]', '0', '0')");
safe_query("INSERT INTO `".PREFIX_FORUM."user_group` (`group_id`, `user_id`, `group_leader`, `user_pending`) VALUES ('7', '$phpbbid[0]', '0', '0')");
mysql_close($con);
}

         include('../_mysql.php');        
         mysql_connect($host, $user, $pwd) or system_error('ERROR: Can not connect to MySQL-Server');
mysql_select_db($db) or system_error('ERROR: Can not connect to database "'.$db.'"');
       
       }



So I need to be able to insert these rows using the while loop.. how can I do this?

I really appreciate any help.

how do i handle single quotes in sql query

Code: [Select]
" SELECT name from phrase WHERE name='$stitle' ";this returns an error because the name contains single quotes like this:
Johnson's.

Hi,

having problems getting checkboxes to display all reuslts when a user selects more than one check box say in the category section and one in the location section - see page http://www.partyco.co.uk/event-and-party-venues/ - submit to see reults page:

I managed to get it to display reults if the user only seletc either a right or left column option OR one of each - BUT not when thet select multiple categories and one location - and ideas how to do this ? putting it into an array perhaps - but how - new to some of this....

here is the code for the reults page:
Code: [Select]
<?php
$location = $_POST[location];
$category = $_POST[category];
?>

<?php

$Link = mysql_connect("xxxxxxxxx", "xxxxxxxxx", "xxxxxxxx") or die(mysql_error());
mysql_select_db("xxxxxxxx") or die(mysql_error());

// selects db listings when location not given
if (empty($location)) {
$query = "SELECT * FROM venues WHERE category = '$category' order by title";
$result = mysql_query($query) or die(mysql_error());

// selects db listings when category not given
} elseif(empty($category)) {
$query = "SELECT * FROM venues WHERE location = '$location' order by title";
$result = mysql_query($query) or die(mysql_error());

// selects db listings when both given
}else {
$query = "SELECT * FROM venues WHERE category = '$category' and location = '$location' order by title";
$result = mysql_query($query) or die(mysql_error());
}

while($row = mysql_fetch_array($result)){
echo "<div class=\"resultsShort\" style=\"margin-bottom:10px;\">";
echo "<h2 id=\"resultsHeading\">";
echo $row['title'];
echo "</h2>";
echo "<p class\"resultspara\">". nl2br($row['description']). "</p>";
echo "<h4 style=\"margin:5px 0 0 0; padding:0;\">Contact details</h4>";
echo "<p class\"resultspara\">". nl2br($row['contact']). "</p>";
echo "<div style=\"float:left; width:124px; height:40px; margin:10px 15px 0 0;\">";
echo "<a href=\"/party-supplier-resources/email-supplier.php?title=". $row['title']. "&email=" . $row['email']. "&location=" . $row['location']. "&category=" . $row['category']. "\" title=\"contact this venue here\">";
echo "<img src=\"/images/email-supplier.jpg\" width=\"124\" align=\"right\" height=\"35\" alt=\"contact this supplier button\" border=\"0\" /></a>";
echo "</div>";
echo "</div>";
}


?>


<?php include("../include/shareLinks.php"); ?>


<div id="popupContact">
<a id="popupContactClose" title="close this window">close x</a>
<h1>Supplier Directory Enquiry Form</h1>
<?php include("../include/enquiryform.php"); ?>
</div>
<div id="backgroundPopup"></div>


<?php
mysql_close ($Link);
?>
Any help appreciated!

Aaron

MOD EDIT: [code] . . . [/code] BBCode tags added.

I have a script to update certain rows that contain certain data in them.

Here is the code:




  if ($_POST['newstype'] == "1") {
      $query = mysql_query("SELECT * from `news` WHERE type='1'");
      if (mysql_num_rows($query) == 1) {
          mysql_query("UPDATE `news` SET type = '2' WHERE type = '1' ORDER BY `news`.`dtime` ASC LIMIT 1") or die(mysql_error());
      } else {
          echo "did not edit main news";
      }
  }
  elseif ($_POST['newstype'] == "2") {
        $query = mysql_query("SELECT * from `news` WHERE type='2'");
      if (mysql_num_rows($query) == 3) {
          mysql_query("UPDATE `news` SET type = '3' WHERE type= '2' ORDER BY `news`.`dtime` ASC LIMIT 1") or die(mysql_error());
      } else {
          echo "did not edit recent news";
      }
  }
  elseif ($_POST['newstype'] == "3") {
        $query = mysql_query("SELECT * from `news` WHERE type='3'");
      if (mysql_num_rows($query) == 3) {
          mysql_query("UPDATE `news` SET type = '4' WHERE type= '3' ORDER BY `news`.`dtime` ASC LIMIT 1") or die(mysql_error());
      } else {
          echo "did not edit old news";
      }
  }
  else
  {
  echo "didnt update anything!";
  }    


Here is my database structure.


Why is it not updating it and always saying Did not edit main/recent/old news.