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  • Mysql advanced SELECT, or multiple SELECTS? Movies keywords

    - by Supyxy
    I have a mysql database with movies as follows: MOVIES(id,title) KEYWORDS_TABLE(id,key_id) [id is referenced to movies.id, key_id is refernced to keywords.id] KEYWORDS(id,keyword) //this doesn't matter on my example.. Basically i have movies with their titles and plot keywords for each one, i want to select all movies that have the same keywords with with a given movie id. I tried something like: SELECT key_id FROM keywords_table WHERE id=9 doing that in php and storing all the IDs in an array $key_id.. then i build another select that looks like: SELECT movies.title FROM movies,keywords_table WHERE keywords_table.key_id=$key_id[1] OR keywords_table.key_id=$key_id[2] OR ......... OR keywords_table.key_id=$key_id[n] This kinda works but it takes too much time as we talk about a database with thousands of thousands of records. So, any suggestions?? thanks!

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  • How do I optimize this query?

    - by InnateDev
    SELECT DISTINCT wposts.* FROM wp_2_posts wposts, wp_2_postmeta wpostmeta, wp_2_postmeta wpostmeta1, wp_2_term_taxonomy, wp_2_terms, wp_2_term_relationships WHERE wposts.ID = wpostmeta.post_id AND wp_2_terms.term_id = '8' AND wp_2_term_taxonomy.term_id = wp_2_terms.term_id AND wp_2_term_taxonomy.term_taxonomy_id = wp_2_term_relationships.term_taxonomy_id AND wp_2_term_relationships.object_id = wposts.ID AND wpostmeta.meta_key = 'validity' AND wpostmeta.meta_value > '".$logic_date."' AND wpostmeta1.meta_key != 'permanent' AND wposts.post_status = 'publish' AND wposts.post_type = 'post' ORDER BY wposts.post_date DESC

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  • QuestionOrAnswer model?

    - by Mark
    My site has Listings. Users can ask Questions about listings, and the author of the listing can respond with an Answer. However, the Answer might need clarification, so I've made them recursive (you can "answer" an answer). So how do I set up the database? The way I have it now looks like this (in Django-style models): class QuestionOrAnswer(Model): user = ForeignKey(User, related_name='questions') listing = ForeignKey(Listing, related_name='questions') parent = models.ForeignKey('self', null=True, blank=True, related_name='children') message = TextField() But what bugs me is that listing is now an attribute of the answers as well (it doesn't need to be). What happens if the database gets mangled and an answer belongs to a different listing than its parent question? That just doesn't make any sense. We can separate it with polymorphism: QuestionOrAnswer user message created updated Question(QuestionOrAnswer) shipment Answer(QuestionOrAnswer) parent = ForeignKey(QuestionOrAnswer) And that ought to work, but now ever question and answer is split into 2 tables. Is it worth this overhead for clearly defined models?

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  • ado sql update table with result of group by query

    - by brett
    I am trying to update records in an .mdb table with the number of records containing the same value The sql below does not work but I think gives an indication of what I am trying to achieve. UPDATE table1 AS A INNER JOIN (SELECT PH_BSP , Count(PH_BSP) AS PHCOUNT FROM table1 GROUP BY PH_BSP) AS B ON A.PH_BSP=B.PH_BSP SET A.PH_SORT = B.PHCOUNT; any ideas?

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  • How do I query/filter a to-many relationship in Core Data

    - by Kris Bixler
    I have Customer, Event and Address objects in my data model. Both Customer and Address have a one-to-many relationship to Event. I can get the distinct list of addresses for a customer's events for by doing this: NSSet *addressSet = [customer valueForKeyPath:@"events.address"]; For the part of the UI I'm working on now, I need to display the address from the most recent event prior to now that has an address. I'm starting to go down the path of creating a NSFetchRequest, setting it's entity, sort descriptors, predicate and then looping through the results, but it seems like a lot of code. Am I missing some obvious way of filtering/sorting on the "events" relationship of the Customer object or is creating the NSFetchRequest the best solution?

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  • How to optimize an database suggestion engine

    - by Dimitar Vouldjeff
    Hi, I`m making an online engine for item-to-item recommending movies. I have made some researches and I think that the best way to implement that is using pearson correlation and make a table with item1, item2 and correlation fields, but the problem is that after each rate of item I have to regenerate the correlation for in the worst case N records (where N is the number of items). Another think that I read is the following article, but I haven`t thought a way to implement it. So what is your suggestion to optimize this process? Or any other suggestions? Thanks.

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  • sql insert query needed

    - by masfenix
    Hey guys, so I have two tables. They are pictured below. I have a master table "all_reports". And a user table "user list". The master table may have users that do not exist in the user list. I need to add them to the user list. The master table may have duplicates in them (check picture). The master list does not contain all the information that the user list requires (no manager, no HR status, no department.. again check picture).

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  • MYSQL distinct query

    - by Patrick
    This is my example of my table: id | name | foreign_id | 1 a 100 2 b 100 3 c 100 4 a 101 5 b 101 6 c 101 I would like to get the distinct file with the latest foreign_id (bigger number). In this example, it would be row with id 4,5,6. Anyone has any idea? Thank you very much!

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  • MySQL SUM Query daily values of a week problem

    - by davykiash
    Am trying to return the sum of each day of a week in mysql but it returns nothing despite having values for the 3rd Week of March 2010 SELECT SUM(expense_details_amount) AS total FROM expense_details WHERE YEAR(expense_details_date) = '2010' AND MONTH(expense_details_date) = '03' AND WEEK(expense_details_date) = '3' GROUP BY DAY(expense_details_date) How do I go about this?

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  • Sql server 2008 query

    - by Prashant
    I am trying to implement versioning of data I have two tables Client and Address. I have to display in the UI, the various updates in the order in which they were made but with the correct client version so, Client Table Address Table ---------- ---------- Client Version Modified Date Address Version ModifiedDate CV1 T1 AV1 T2 CV2 T4 AV2 T3 CV3 T5 My result should be CV1 AV1 (first version) CV1 AV2 (as AV1 was updated at T3) CV2 AV2 (as Client got updated to CV2 at T4) CV3 AV2 (As client has got updated at T5)

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  • Displaying mysql results as an object?

    - by Michael
    If I have a database with the structure: ___id_____|____value____ 1 | value1 2 | value2 3 | value3 How can I pull data from this MySQL database in PHP and have it formatted like this: Array ( [0] => stdClass Object ( [id] => 1 [value] => value1 ) [1] => stdClass Object ( [id] => 2 [value] => value2 ) [2] => stdClass Object ( [id] => 3 [value] => value3 ) )

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  • ORA-12560: TNS:protocol adaptor error after delete one database

    - by malihe
    i have oracle11g desktop. For my project I create 3 databases via configuration assistant tools. Then I delete one of them and after this I have the error: ora-12560. By mistake both of my databases have the same pasword, for example: when i want to connect one of these data bases with system user, i have one pasword and perhaps the databases dont know connect which one. I start all services set oracle_sid=orcl. I run lsnrctl tnsping check tansname.ora & my listener.ora and I logon with sysdba@oracle_sid but i have this error again pleas help me tnx

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  • Difference between Facebook query from iphone and from web

    - by Aashutosh
    Hi, I am creating a iphone application for the existing web application. The fql which is happening at the web is giving me right results but the fql happening at the iphone is not giving all the results. select name, pic_square, pic_big, uid, sex, birthday, relationship_status , current_location, meeting_sex, interests, music, tv, movies, books, quotes, education_history, work_history from user where uid = XXXXXXX is giving me different result in web when compared to the iphone. Thanks, Aashutosh

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  • Rails database relationships

    - by Danny McClelland
    Hi Everyone, I have three models that I want to interact with each other. Kase, Person and and Company. I have (I think) setup the relationships correctly: class Kase < ActiveRecord::Base #HAS ONE COMPANY has_one :company #HAS MANY PERSONS has_many :persons class Person < ActiveRecord::Base belongs_to :company class Company < ActiveRecord::Base has_many :persons def to_s; companyname; end I have put the select field on the create new Kase view, and the create new Person view as follows: <li>Company<span><%= f.select :company_id, Company.all %> </span></li> All of the above successfully shows a drop down menu dynamically populated with the company names within Companies. What I am trying to do is display the contact of the Company record within the kase and person show.html.erb. For example, If I have a company called "Acme, Inc." and create a new Kase called "Random Case" and choose within the create new case page "Acme, Inc." from the companies drop down menu. I would then want to display "Acme, Inc" along with "Acme, Inc. Mobile" etc. on the "Random Case" show.html.erb. I hope this makes sense to somebody! Thanks, Danny

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  • Problem using Javascript to redirect to a URL with a query string

    - by Jordan Pagaduan
    Javascript <script type="text/javascript"> function Edit(id) { if(confirm("Are you sure to edit?")==true) { location.href='employee_set.php&edit='+id; } } </script> PHP <?php if(isset($_GET["edit"])==false) { echo "no response"; } else { echo "link success"; } ?> My problem is the Javascript is OK. The location href example. http://localhost/employee_set.php&edit=30 ... The PHP code is not working. Error is not found.

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  • HIbernate query language problem.....

    - by mslatf
    I have a Project class that has a Set of userstories called userStories12many. I'm having troubles trying to get the project that has a certain userstory in its set getComponent(int userStoryID) I think im on the right track but i dont know what i did wrong public Projects getComponent(int userStoryID) { Session session = SessionFactoryHelper.getSessionFactory() .getCurrentSession(); session.beginTransaction(); List<Projects> compo = session.createQuery("select p " + "from Projects as p inner join fetch p.userStories12many as u " + "where u.storyId='" + userStoryID + "'").list(); session.getTransaction().commit(); return compo.get(0); }

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  • How to create an array from database?

    - by Sofyan
    Hi, Please help me to create an array from a field of my DB. That field has records separated by comma. Below is the illustration: ID | article_title_fld | article_tags_fld | ---------------------------------------------------------------------- 1 | Learn PHP | PHP, coding, scripting | 3 | Javascript Tutorial | Javascript, scripting, tutorial | 4 | Styling with CSS | CSS, tutorial, web design | I want to collect all records in the article_tags_fld then put it into 1 array. Perhaps I named it $array1, and the print out as below: Array ( [0] => PHP [1] => coding [2] => scripting [3] => Javascript [4] => scripting [5] => tutorial [6] => CSS [7] => tutorial [8] => web design )

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  • Passing delimited string to stored procedure to search database

    - by rs
    How can i pass a string delimited by space or comma to stored procedure and filter result? I'm trying to do something like - Parameter Value -------------------------- @keywords key1 key2 key3 Then is stored procedure i want to first find all records with first or last name like key1 filter step 1 with first or last name like key2 filter step 2 with first or last name like key 3

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  • Query to look up comment in one table, username in another table

    - by John
    Hello, I am using a MySQL table called "login" with the following structure: loginid, username, password, email, actcode, disabled, activated, created, points I am using another MySQL table called "comment" with the following structure: commentid, loginid, submissionid, comment, datecommented For a given "submisssionid", I would like to print out the following information from the table "comment": -The fields "comment" and "datecommented". At the same time, I would like to print out the following from the table "login": -The "username" that corresponds to the "loginid" for each row being row being selected from the table "comment". How can I do this? I tried the code below but it did not work. Thanks in advance, John $submission = mysql_real_escape_string($_GET['submission']); $submissionid = mysql_real_escape_string($_GET['submissionid']); $sqlStr = "SELECT c.loginid ,c.submissionid ,c.comment ,c.datecommented ,l.username ,COUNT(c.commentid) countComments FROM comment c WHERE c.submissionid = $submissionid INNER JOIN login l ON c.loginid = l.loginid GROUP BY c.submissionid ORDER BY c.datecommented DESC LIMIT 100"; $result = mysql_query($sqlStr); $arr = array(); echo "<table class=\"samplesrec\">"; while ($row = mysql_fetch_array($result)) { echo '<tr>'; echo '<td class="sitename1">'.$row["comment"].'</td>'; echo '</tr>'; echo '<tr>'; echo '<td class="sitename2"><a href="http://www...com/sandbox/members/index.php?profile='.$row["username"].'">'.$row["username"].'</a>'.$row["datecommented"].'</td>'; echo '</tr>'; } echo "</table>";

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  • Why use hashing to create pathnames for large collections of files?

    - by Stephen
    Hi, I noticed a number of cases where an application or database stored collections of files/blobs using a has to determine the path and filename. I believe the intended outcome is a situation where the path never gets too deep, or the folders ever get too full - too many files (or folders) in a folder making for slower access. EDIT: Examples are often Digital libraries or repositories, though the simplest example I can think of (that can be installed in about 30s) is the Zotero document/citation database. Why do this? EDIT: thanks Mat for the answer - does this technique of using a hash to create a file path have a name? Is it a pattern? I'd like to read more, but have failed to find anything in the ACM Digital Library

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  • What is the technological basis for Azure DocumentDB?

    - by user1703840
    Microsoft announced the availability of Azure DocumentDB as follows... A fully-managed, highly-scalable, NoSQL document database service. - Rich query over a schema-free JSON data model - Transactional execution of JavaScript logic - Scalable storage and throughput - Tunable consistency - Rapid development with familiar technologies - Blazingly fast and write optimized database service I really like the "transactional execution of JavaScript logic". Sounds like an approach similar to that of PostgreSQL NoSQL. Anyone know what is the technological basis for the Azure DocumentDB service? SQL Server?

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  • SQL Query Update is not working

    - by Brett Powell
    Hey guys, I am using pawn script for something, and everything works great except for one of my queries. For some reason, it will not work, and I am hoping it is simple enough someone can spot my mistake as I have been banging my head on it for days. http://ampaste.net/m6a887d30 The two highlighted lines are the queries that are not working. The other one works fine, but the values for 'class1kills' and 'class2kills' remain at 0. Here is a screenshot from phpmyadmin incase I did something silly. http://brutalservers.net/sql.png

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