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  • Database schema for multiple category/product relationship

    - by sree01
    I want to design a database for an e-commerce application with category/subcategory management. Please suggest a database schema where we can create categories and subcategories and add products to those categories. Each product can have multiple categories and we can select products belong to multiple categories using a boolean database query Thanks

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  • filtering for multiple values on one column. All values must exist, else - return zero

    - by Andrew
    Hello All, I would like to filter one column in a table for couple values and show results only if all those values are there. If one or more is missing, then return zero results. example table +----+--------+----------+ | id | Fruit | Color | +----+--------+----------+ | 1 | apple | red | | 2 | mango | yellow | | 3 | banana | yellow | +----+--------+----------+ example "wrong" code: (this must return 3 rows) select Fruit FROM table WHERE Color = red AND Color = yellow but select Fruit FROM table WHERE Color = red AND Color = green must return 0 rows. (If i use select Fruit FROM table WHERE Color = red OR Color = green i get 1 row which is not what i need) I am using PHP with form where user checks different checkboxes that represent different values of the same column. So when he selects multiple checkboxes, all those values should be in the result set, otherwise no result should be given. Thank you, Andrew

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  • PHP database simulation

    - by Emdiesse
    I have a PHP script that works by calling items from a database based upon the time they were placed in there and it deletes them if they are older than 5 minutes. Basically, I want to now simulate what would happen if this database was being updated regularly. So I was considering sticking in some code that loads an XML file then goes through and parses that into the database based upon the time data located within a node of the xml data... but the problem there is I want it to continually loop through an enter this data so it'll never actually run the other processes So I was thinking of having another PHP script do that that could do this independantly of the php script that is going to display this data... In theory: I am looking to have a button that I can press and it will then run some php code to load up an XML file from a directory on my web server and then iterate though the data sending the data, to a database, based upon the time within a node in the PHP script and when the script was first called So back to my page that displayed the data... if I continually hit refresh it will contain different results each time because data is being added by the other process and this php script removes the older data when it is refreshed Any information on this? Is there a way I can silently, and safely, run a php script without it being loaded into a browser... like a thread!?

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  • PHP behaves weird, mixing up HTML markup.

    - by adardesign
    Thanks for looking on this problem. I have a page that is totally valid page, and there is a PHP loop that brings in a <li> for each entry of the table. When i check this page locally it looks 100% OK, but when veiwing the page online the left side bar (which creates this markup is broken randomly mixing <div>'s and <li>'s and i have no clue what the problem is. See page (problem is on the left side) php code <?php do { ?> <li class="clear-block" id="<?php echo $row_Recordset1['penSKU']; ?>"> <a title="Click to view the <?php echo $row_Recordset1['penName']; ?> collection" rel="<?php echo $row_Recordset1['penSKU']; ?>"> <img src="prodImages/small/<?php echo $row_Recordset1['penSKU']; ?>.png" alt="" /> <div class="prodInfoCntnr"> <div class="basicInfo"> <span class="prodName"><?php echo $row_Recordset1['penName']; ?></span> <span class="prodSku"><?php echo $row_Recordset1['penSKU']; ?></span> </div> <div class="secondaryInfo"> <span>As low as .<?php echo $row_Recordset1['price25000']; ?>¢ <!--<em>(R)</em>--></span> <div class="colorPlacholder" rel="<?php echo $row_Recordset1['penColors']; ?>"></div> </div> </div> <div class="additPenInfo"> <div class="imprintInfo"><span>Imprint area: </span><?php echo $row_Recordset1['imprintArea']; ?></div> <div class="colorInfo"><span>Available in: </span><?php echo $row_Recordset1['penColors']; ?></div> <table border="0" cellspacing="0" cellpadding="0"> <tr> <th>Amount</th> <th>500</th> <th>1,000</th> <th>2,500</th> <th>5,000</th> <th>10,000</th> <th>20,000</th> </tr> <tr> <td>Price <span>(R)</span></td> <td><?php echo $row_Recordset1['price500'];?>¢</td> <td><?php echo $row_Recordset1['price1000'];?>¢</td> <td><?php echo $row_Recordset1['price2500'];?>¢</td> <td><?php echo $row_Recordset1['price5000'];?>¢</td> <td>Please Contact</td> <td>Please Contact</td> </tr> </table> </div> </a> </li> <?php } while ($row_Recordset1 = mysql_fetch_assoc($Recordset1)); ?>

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  • jquery ajax call in onsubmit function is not working

    - by shilna mk
    I have form submission page add_sale.php and an ajax page ajx_check_sale.php.Ajax call is inthe onsubmit function.But ajax is not worikng.Anybody give any solution plz.. I have form submission page add_sale.php and an ajax page ajx_check_sale.php.Ajax call is inthe onsubmit function.But ajax is not worikng.Anybody give any solution plz.. add_sale.php function sale_credit(id) { var cust_name=$('#cust_name').val(); $.ajax({ type: "POST", url: 'ajx_typ1.php', data:'id='+id, success: function(msg) { $("#sale_type1").html(msg); } }); $.ajax({ type: "POST", url: 'ajx_typ3.php', data:'id='+id, success: function(msg) { $("#sale_type3").html(msg); } }); $.ajax({ type: "POST", url: 'ajx_typ2.php', data:'id='+id, success: function(msg) { $("#sale_type2").html(msg); } }); } function validate_form() { var cust_name= $('#cust_name').val(); var total= $('#total').val(); var sale_type= $('#sale_type').val(); if(sale_type=='return') { $.ajax({ type: "POST", url: 'ajx_check_sale.php', data:'cust_name='+cust_name + '&total=' + total, success: function(msg) { alert(msg); /*if(msg==0) { alert("Return is greater then sale"); return false; } */ } }); } } <form action="" method="post" name="adFrm" onSubmit="return validate_form()"> <select name="sale_type" style="width:130px;" id="sale_type" onchange="sale_credit(this.value)" > <option value="">Select</option> <option value="credit">Credit</option> <option value="payment">Payment</option> <option value="return">Return</option> </select> </form> ajx_check_sale.php require_once("codelibrary/inc/variables.php"); require_once("codelibrary/inc/functions.php"); echo $cust_name=$_POST['cust_name']; echo $return=$_POST['total']; $cus="select sum(total) as total_sum from customer where id='$cust_id'"; $cus2=mysql_query($cus); $fet=mysql_fetch_array($cus2); $total=$fet['total_sum']; if($return>$total) { $status=0; echo $status; } else { $status=1; echo $status; }

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  • Reading a CSV with file_get_contents in PHP

    - by JPro
    I am reading a 'kind' of csv file and exploding it and storing it in array. The file I am reading has this structure Id,Log,Res,File mydb('Test1','log1','Pass','lo1.txt'). mydb('Test2','log2','Pass','lo2.txt'). mydb('Test3','log3','Pass','lo3.txt'). Now what I am trying to do is : reading the last record in my database, get the Name, lets say in this case 'Test1' and then I am searching through my file and where I can find the position of 'Test1' and get the next lines in the file, extract the ID,s and add it to database. I am getting the position of desired string in the file, but I am not sure how to get the next lines too. Here's my code so far. <?php mysql_connect("localhost", "root", "") or die(mysql_error()); mysql_select_db("testing") or die(mysql_error()); $result = mysql_query("select ID from table_1 order by S_no DESC limit 1") or die(mysql_error()); $row = mysql_fetch_array( $result ); $a = $row['ID']; echo 'Present Top Row is '.$a.'<br>'; $addresses = explode("\n", file_get_contents('\\\\fil1\\logs\\tes.pl')); foreach($addresses as $val) { $pos = strstr($val, $a); if ($pos === false) { } else { echo "The string <br> '$a' <br>was found in the string <br>'$val' <br>"; echo " and exists at position <br>$pos<br>"; } }

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  • How to query two tables based on whether or not record exists in a third?

    - by Katherine
    I have three tables, the first two fairly standard: 1) PRODUCTS table: pid pname, etc 2) CART table: cart_id cart_pid cart_orderid etc The third is designed to let people save products they buy and keep notes on them. 3) MYPRODUCTS table: myprod_id myprod_pid PRODUCTS.prod_id = CART.cart_prodid = MYPRODUCTS.myprod_pid When a user orders, they are presented with a list of products on their order, and can optionally add that product to myproducts. I am getting the info necessary for them to do this, with a query something like this for each order: SELECT cart.pid, products.pname, products.pid FROM products, cart WHERE products.pid = cart_prodid AND cart_orderid=orderid This is fine the first time they order. However, if they subsequently reorder a product which they have already added to myproducts, then it should NOT be possible for them to add it to myproducts again - basically instead of 'Add to MyProducts' they need to see 'View in MyProducts'. I am thinking I can separate the products using two queries: Products never added to MyProducts By somehow identifying whether the user has the product in MyProducts already, and if so excluding it from the query above. Products already in MyProducts By reversing the process above. I need some pointers on how to do this though.

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  • Codeigniter: Combining activeRecord with manual queries?

    - by Industrial
    Hi everybody, I've though a bit about the activerecord vs. manual queries in Codeigniter. ActiveRecord is awesome when it's all about standard queries and holds development time really low. However, when there's a need to add some complexity to the queries, the ActiveRecord gets quite complicated to work with. Sub queries or complex joins gives atleast me a lot of headache. Since the current "$this-db-query" -call immediately executes the set query, it can't be combined with normal activeRecord calls. So, what can I do to combine the two methods? Thanks!

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  • SQL Self Join Query Help

    - by hdoe123
    Hi All, I'm trying to work out a query that self join itself on a table using the eventnumber. I've never done a self join before. What i'm trying to query is when a client has started off in a city which is chester to see what city they moved to. But I dont want to be able to see if they started off in another city. I would also like be only see the move once (So i'd only like to see if they went from chester to london rather then chester to london to wales) The StartTimeDate is the same EndDateTime if they moved to another city. Data example as follows if they started off in the city chester :- clientid EventNumber City StartDateTime EndDateTime 1 1 Chester 10/03/2009 11/04/2010 13:00 1 1 Liverpool 11/04/2010 13:00 30/06/2010 16:00 1 1 Wales 30/07/2010 16:00 the result I would like to see is on the 2nd row - so it only shows me liverpool. Could anyone point in the right direcetion please?

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  • Surgical slave reads for Ruby on Rails, mulitple databases.

    - by Daniel
    Greetings, I'm currently working on a multiple database rails application. I want to off load the SELECT queries on to the slave databases for only SOME of the databases or specific models. The issue is that in places, we swap out the current database connection and put in a different one for a short time; to load fixtures or to handle sharding. Does anyone have any recommendations on a ruby gem that 1. will split select/(sql writes) with a considerable amount of control. We want to handle just some models and we are looking for a neat surgical fix. 2. does not monkey around with activerecord. 3. is still being maintained. TIA -daniel

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  • How may I create an horizontal view from a tree table

    - by Giuseppe Alfieri
    I want to create a view for each tree for each customer of this 3 table structured in this way: Fields: db_attrib.name, db_attrib.name, db_attrib.name until the last db_tree.id_child = 0 Values: db_attrib_values.value where db_attrib.id = db_attrib_value.id_attrib and so on for each child And so on for each db_tree.id This is the link to sql fiddle with the prepared structure: http://sqlfiddle.com/#!9/21516

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  • SQL query using information from 4 tables (not all directly linked)

    - by Yvonne
    I'm developing a simple classroom system, where teachers manage classes and their subjects. I have 2 levels of access in my teachers table, assigned by an integer (1 = admin, 2 = user)... Meaning that the headteacher is the admin :) A teacher (of level 1) can have have many classes and a class can have many teachers (so I have 'TeachersClasses' table). A class can have many subjects, and a teacher can have many subjects. Basically, I'm attempting a query to display the admin teacher's (level 1) subjects. However, only teachers with a level of 2, are directly related to a subject, which is set by the admin user. The headteacher can view all of their subjects via the classroom, but I cannot get all of the subjects to be displayed on one page, instead I can only get the subjects to appear under a specific classroom right now... This is what I have so far, which is returning nothing. (I'm guessing this may require an SQL clause more advanced that 'INNER JOIN' which is the only join type I am familiar with, and thought it would be enough! $query = "SELECT subjects.subjectid, subjects.subjectname, subjects.subjectdetails, classroom.classid, classroom.classname FROM subjects INNER JOIN classroom ON subjects.subjectid = classroom.classid INNER JOIN teacherclasses ON classroom.classid = teacherclasses.classid INNER JOIN teachers ON teacherclasses.teacherid = teachers.teacherid WHERE teachers.teacherid = '".intval( $_SESSION['SESS_TEACHERID'] )."'"; In order for all subjects related to the headteachers class to be displayed, I'm gathering that all of my tables will need to be called up here? Thanks for any help! Example output: subject name: maths // teacher: mr smith // classroom: DG99 x10 for all the subjects associated with the headteachers classrooms :)

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  • Pulling info from database and dynamically adding them into different divs

    - by Matt Nathanson
    This may be a bit of a php n00b question but i've managed to get it working this far and I'm a little bit stuck. I'm pulling 12 images with descriptions out of a database. I want to insert them into a client rotator that has 3 sets of 4. They will be contained in divs called clientrotate1, clientrotate2, and clientrotate3 respectively. Inside each of those divs I want to have 4 images with classes thumb1, thumb2, thumb3, and thumb4 I am successful in having the images and descriptions pull into clientrotator 1. Where I get stuck is to how to dynamically add the 2nd and 3rd set of data into clientrotator2 and clientrotator3. Here is my function: public function DisplayClientRotator(){ $result = mysql_query( 'SELECT * FROM project ORDER BY id DESC LIMIT 12' ) or die("SELECT Error: ".mysql_error()); $iterator = 1; while ($row = mysql_fetch_assoc($result)) { echo "<div id='clientrotate1'>"; echo "<div class='thumb$iterator'>"; echo "<img style='width: 172px; height: 100px;' src=".$row['photo']." />"; echo "<div class='transbox'>"; echo "<div class='thumbtext'>"; echo $row['campaign']; echo "</div>"; echo "</div>"; echo "</div>"; echo "</div>"; $iterator++; } Any help or pointers int he right direction would be greatly appreciated! Thanks so much, Matt

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  • How to get query result even if JOIN hasn't found any results?

    - by user1734651
    I want select data for user, and join another info from other table that related to the user. The problem is that this extra data not always exist for any user, just for few. How can I write a query that will return NULL for not found data, instead just return null for the whole query? SELECT a.*, b.* FROM user AS a LEFT JOIN extra AS b ON (a.userid = b.userid) WHERE a.userid = {$userid} LIMIT 1 When extra data found for the user, I get the resource as expected. If not, I get NULL for the whole query. Bottom line, I don't care if "extra" exist for the user or not, if yes - select it as well, if not - ignore that.

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  • Require help in Writing Query

    - by harigm
    The following image have been uploaded to show what I am trying to do and what I wanted out of it Can any one help me write the Query to get the results what I want Please check the following SELECT * FROM KPT WHERE PROPERTY_ID IN (SELECT PROPERTY_ID FROM khata_header WHERE DIV_ID = 3 and RECORD_STATUS = 0) and CHALLAN_NO > 42646 The above is the query I have written and I have got the following result set ID CHALLAN_NO PROPERTY_ID SITE_NO TOTAL_AMOUNT ----- ------------- -------------- ------------------- --------------- 1242 42757 3103010141 296 595 1243 63743 3204190257 483 594 1244 63743 3204190257 483 594 1334 43395 3217010223 1088 576 1421 524210 3320050416 (null) (null) 1422 524210 3320050416 (null) (null) 1560 564355 3320021408 (null) (null) 1870 516292 3320040420 (null) (null) 1940 68357 3217100104 139 1153 1941 68357 3217100104 139 1153 2002 56256 3320100733 511 4430 2003 56256 3320100733 511 4430 2004 66488 3217040869 293 3094 2005 66488 3217040869 293 3094 2016 64571 3217040374 (null) (null) 2036 523122 3320020352 (null) (null) 2039 65682 3217040021 273 919 In my resultset, I am getting the PropertyId repeated, since there are multilple entries, How Can I know How many have been repeated What are those Property Id which have repeated more than 2 times. Little Back ground about the tables are PROPERTY_ID is the FK in the KPT PROPERTY_ID is the PK in KH I am writing a subquery to get the Result, so I am stuck I dont know how to get my results Please help

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  • Grouping a query with php

    - by Tom Hoad
    Basic question! I have 2 tables FRUIT id | fruit_name ------------------- 1 | Apple 2 | Banana 3 | Carrot VARIETIES id | fk_fruit_id | variety_name --------------------------------------- 1 1 Cox 2 1 Braeburn 3 2 Chester 4 3 Kotaka 5 3 Imperial 6 3 Oneal I'd like to output a list of varieties per fruit e.g. APPLE - Cox, Braeburn BANANA - Chester CARROT - Kotaka, Imperial, Oneal My current code is $query = "SELECT * FROM produce, varieties WHERE produce.id = varieties.fk_fruit_id"; $result = mysql_query($query) or die('Error : ' . mysql_error()); while ($row = mysql_fetch_array($result, MYSQL_ASSOC)) { $produce_fruit_code = $row['fruit_code']; $variety_name = $row['variety_name']; echo $produce_fruit_code.' - '.$variety_name.'<br/>'; } which outputs: Apple - Cox Apple - Braeburn Banana - Chester Carrot - Kotaka Carrot - Imperial Carrot - Oneal Not a million miles away, but still not there. Any help is much appreciated, thanks!

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  • Limit a user to view only associated records in rails

    - by trobrock
    I have an application with three Models (Profile - SubModel - SubSubModel) chained together with has many relationships. I am trying to limit a user, after logging in, to only retrieving records that are associated with their Profile. I am very new to rails and this is what I had been trying in the Profile model has_many :submodels, :conditions => {:profile_id => self.id} but this is returning an empty data set when calling with Profile.find_by_id(1).submodels, how else could I achieve what I am trying to do. Or should I handle this in the controller or view instead, I thought it sounded well suited for the model to handle this.

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  • When *not* to use prepared statements?

    - by Ben Blank
    I'm re-engineering a PHP-driven web site which uses a minimal database. The original version used "pseudo-prepared-statements" (PHP functions which did quoting and parameter replacement) to prevent injection attacks and to separate database logic from page logic. It seemed natural to replace these ad-hoc functions with an object which uses PDO and real prepared statements, but after doing my reading on them, I'm not so sure. PDO still seems like a great idea, but one of the primary selling points of prepared statements is being able to reuse them… which I never will. Here's my setup: The statements are all trivially simple. Most are in the form SELECT foo,bar FROM baz WHERE quux = ? ORDER BY bar LIMIT 1. The most complex statement in the lot is simply three such selects joined together with UNION ALLs. Each page hit executes at most one statement and executes it only once. I'm in a hosted environment and therefore leery of slamming their servers by doing any "stress tests" personally. Given that using prepared statements will, at minimum, double the number of database round-trips I'm making, am I better off avoiding them? Can I use PDO::MYSQL_ATTR_DIRECT_QUERY to avoid the overhead of multiple database trips while retaining the benefit of parametrization and injection defense? Or do the binary calls used by the prepared statement API perform well enough compared to executing non-prepared queries that I shouldn't worry about it? EDIT: Thanks for all the good advice, folks. This is one where I wish I could mark more than one answer as "accepted" — lots of different perspectives. Ultimately, though, I have to give rick his due… without his answer I would have blissfully gone off and done the completely Wrong Thing even after following everyone's advice. :-) Emulated prepared statements it is!

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  • How to make a Round Robin? or Is there an easier way other than Round Robin?

    - by candies
    The problem that I face is in what way if there is issue like the example below: Codes 1000, 2000, 3000, 4000, 5000 ID 1, 2, 3 ======================================== This: ID number 1 has codes 1000, 2000, 3000, 4000 ID number 2 has codes 2000, 4000, 3000 ID number 3 has codes 3000, 4000, 5000 ======================================== When all the fields are connected, each ID has found the same codes. From the example above, I want to produce fair result and adjusted to the code that it had before on each ID as below: ======================================== To be: ID number 1 has codes 1000, 2000 (1000 must be on number 1 cause only it has than other) ID number 2 has codes 3000, 4000 ID number 3 has codes 5000 (5000 must be on number 3 cause only it has than other) ======================================== Some say using Round Robin, but I never heard Round Robin before and I don't have idea how to use it, such a blank mind. Is there another easier way like to use PHP may be? I'm lost. Thanks.

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  • Suggest product catalog script/framework in PHP which doesn't displays product price

    - by Amit Kumar Jha
    Hey all, I am new to web development and have this project in hand where in I have to build a product catalogue. I don't want any cart functionality or other such features, I just want to display the products,their specifications and images etc. on the website and give my client an admin panel to manage products. Now I looked into various PHP shopping cart scripts but couldn't find a way to remove price info from the display. I am not experienced enough in web development to make a product catalogue from scratch so if you guys could point me out in right direction I would be very grateful. If you could give me link to some shopping cart or cataloguing script or any other way to accomplish the task it would help me out a lot.. Thanks in advance to all those who reply.

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  • Shouldn't prepared statements be much faster?

    - by silversky
    $s = explode (" ", microtime()); $s = $s[0]+$s[1]; $con = mysqli_connect ('localhost', 'test', 'pass', 'db') or die('Err'); for ($i=0; $i<1000; $i++) { $stmt = $con -> prepare( " SELECT MAX(id) AS max_id , MIN(id) AS min_id FROM tb "); $stmt -> execute(); $stmt->bind_result($M,$m); $stmt->free_result(); $rand = mt_rand( $m , $M ).'<br/>'; $res = $con -> prepare( " SELECT * FROM tb WHERE id >= ? LIMIT 0,1 "); $res -> bind_param("s", $rand); $res -> execute(); $res->free_result(); } $e = explode (" ", microtime()); $e = $e[0]+$e[1]; echo number_format($e-$s, 4, '.', ''); // and: $link = mysql_connect ("localhost", "test", "pass") or die (); mysql_select_db ("db") or die ("Unable to select database".mysql_error()); for ($i=0; $i<1000; $i++) { $range_result = mysql_query( " SELECT MAX(`id`) AS max_id , MIN(`id`) AS min_id FROM tb "); $range_row = mysql_fetch_object( $range_result ); $random = mt_rand( $range_row->min_id , $range_row->max_id ); $result = mysql_query( " SELECT * FROM tb WHERE id >= $random LIMIT 0,1 "); } defenitly prepared statements are much more safer but also every where it says that they are much faster BUT in my test on the above code I have: - 2.45 sec for prepared statements - 5.05 sec for the secon example What do you think I'm doing wrong? Should I use the second solution or I should try to optimize the prep stmt?

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