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  • MySQL: LIMIT then RAND rather than RAND then LIMIT

    - by Larry
    I'm using full text search to pull rows. I order the rows based on score (ORDER BY SCORE) , then of the top 20 rows (LIMIT 20), I want to rand (RAND) the result set. So for any specific search term, I want to randomly show 5 of the top 20 results. My workaround is code based- where I put the top 20 into an array then randomly select 5. Is there sql way to do this?

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  • Where Is The MYSQL Settings File Located On A Windows Installation

    - by Joshua
    I need to set "lower_case_table_names", but I don't have any idea where to start. I'm using XAMPP and I don't know where to look for the file or that the exact name of the file is. One source said my.cnf another said my.conf, but neither of those files exist on my drive. Is it possible I need to create such a file? And if so, what folder must I put it in for the settings to take?

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  • MySQL field type for a comments field or text area

    - by Derek
    As the title says, I'm after a good field type for a comments field I have in a table. It will store many characters (as users can continuously add to it) so it's definitely over 255. I looked at longtext but wasn't sure...Also how do I change the field type to accept different characters such as apostrophies. Thanks.

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  • using a php variable in the WHERE clause of a mysql query

    - by user1262890
    I'm running a very simple query that I think should work. The only thing that I haven't done before is put a php variable in the WHERE clause of the query. The variable $X is a numerical value, say 100. When I run this query, I just get a value of 0 returned. Am I doing something obviously stupid? SELECT generator_64k.n FROM generator_64k WHERE generator_64k.n<= '$X' I've looked around the web and also tried this: SELECT generator_64k.n FROM generator_64k WHERE generator_64k.n<= '" . $X . "' But this also just returns 0. Any ideas? Thanks in advance.

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  • MySQL Basic about relationship

    - by Roberto
    Hi all! My doubt is about how to treat the follow thing: I have a system where a user belong to a company, and this user have their clients. How is the right way to get a list of all company clients and the follow user name?? In the client table where i have a field with the one of this relations: A company_id and user_id field Just company_id field Just user_id field cause user table have the company_id??? Something else... Tkz Roberto

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  • Complex query in mysql

    - by Satish
    I have two tables reports and holidays. reports: (username varchar(30),activity varchar(30),hours int(3),report_date date) holidays: (holiday_name varchar(30), holiday_date date) select * from reports gives +----------+-----------+---------+------------+ | username | activity | hours | date | +----------+-----------+---------+------------+ | prasoon | testing | 3 | 2009-01-01 | | prasoon | coding | 4 | 2009-01-03 | | gautam | coding | 1 | 2009-01-05 | | prasoon | coding | 4 | 2009-01-06 | | prasoon | coding | 4 | 2009-01-10 | | gautam | coding | 4 | 2009-01-10 | +----------+-----------+---------+------------+ select * from holidays gives +--------------+---------------+ | holiday_name | holiday_date | +--------------+---------------+ | Diwali | 2009-01-02 | | Holi | 2009-01-05 | +--------------+---------------+ When I used the following query SELECT dates.date AS date, CASE WHEN holiday_name IS NULL THEN COALESCE(reports.activity, 'Absent') WHEN holiday_name IS NOT NULL and reports.activity IS NOT NULL THEN reports.activity ELSE '' END AS activity, CASE WHEN holiday_name IS NULL THEN COALESCE(reports.hours, 'Absent') WHEN holiday_name IS NOT NULL and reports.hours IS NOT NULL THEN reports.hours ELSE '' END AS hours, CASE WHEN holiday_name IS NULL THEN COALESCE(holidays.holiday_name, '') ELSE holidays.holiday_name END AS holiday_name FROM dates LEFT OUTER JOIN reports ON dates.date = reports.date LEFT OUTER JOIN holidays ON dates.date = holidays.holiday_date where reports.username='gautam' and dates.date>='2009-01-01' and dates.date<='2009-01-10'; I got the following output +----------+-----------+---------+------------+ | date | activity | hours | holiday | +----------+-----------+---------+------------+ |2009-01-05| coding | 1 | Holi | +----------+-----------+---------+------------+ |2009-01-10| coding | 4 | | +----------+-----------+---------+------------+ but I expected this +----------+-----------+---------+------------+ | date | activity | hours | holiday | +----------+-----------+---------+------------+ |2009-01-01| Absent | Absent | | +----------+-----------+---------+------------+ |2009-01-02| | | Diwali | +----------+-----------+---------+------------+ |2009-01-03| Absent | Absent | | +----------+-----------+---------+------------+ |2009-01-04| Absent | Absent | | +----------+-----------+---------+------------+ |2009-01-05| Coding | 1 | Holi | +----------+-----------+---------+------------+ |2009-01-06| Absent | Absent | | +----------+-----------+---------+------------+ |2009-01-07| Absent | Absent | | +----------+-----------+---------+------------+ |2009-01-08| Absent | Absent | | +----------+-----------+---------+------------+ |2009-01-09| Absent | Absent | | +----------+-----------+---------+------------+ |2009-01-10| Coding | 4 | | +----------+-----------+---------+------------+ How can I modify the above query to get the desired output(for a particular user (gautam in this case))?

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  • MYSQL: Like Method, Similar Words - But Don't Show the Searched Word

    - by elmaso
    Hello, actually i use this method to show similar words for a search request.. $query = "SELECT * FROM searches WHERE Query LIKE '%$search%' ORDER BY Query"; if someone searches for "nelly" it looks up in the database for similar words "nelly furtado, nelly ft. kelly"... but i dont want to show up the searched word.. example: you've searched for nelly - try this too: nelly, nelly furtado, nelly ft., the bold word should not showed up again, because it's the searched word.. is there maybe a method with MATCH AGAINST? thank you!

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  • text indexes vs integer indexes in mysql

    - by imanc
    Hey, I have always tried to have an integer primary key on a table no matter what. But now I am questioning if this is always necessary. Let's say I have a product table and each product has a globally unique SKU number - that would be a string of say 8-16 characters. Why not make this the PK? Typically I would make this field a unique index but then have an auto incrementing int field as the PK, as I assumed it would be faster, easier to maintain, and would allow me to do things like get the last 5 records added with ease. But in terms of optimisation, assuming I'd only ever be matching the full text field and next doing text matching queries (e.g. like %%) can you guys think of any reasons not to use a text based primary key, most likely of type varchar()? Cheers, imanc

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  • Mysql : Request to select the last 10 send/received messages to/by different users

    - by Yako malin
    Hello, I want to select the 10 last messages you received OR you sent TO different users. For example the results must be shown like that : 1. John1 - last message received 04/17/10 3:12 2. Thomy - last message sent 04/16/10 1:26 3. Pamela - last message received 04/12/10 3:51 4. Freddy - last message received 03/28/10 9:00 5. Jack - last message sent 03/20/10 4:53 6. Tom - last message received 02/01/10 7:41 ..... Table looks like : CREATE TABLE `messages` ( `id` int(11) NOT NULL AUTO_INCREMENT, `time` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP, `sender` int(11) DEFAULT NULL, `receiver` int(11) DEFAULT NULL, `content` text ) Have someone any solution ? Thanks in advance for your help.

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  • PHP/MySQL database connection priority?

    - by Josh
    Hello, I have a production database where usage statistics for a service we're working on. I use php to periodically roll up different resolutions (day, week, month, year) of interesting statistics in buckets dictated by the resolution. The php application I've written "completes" its data when its run, such that it will calculate all the rolled-up statistics for the resolutions and periods since it was last run. This is useful if we want to turn this off to debug database performance issues, because I can turn it back on and have it complete its data set. The problem I have, is the calculations are fairly intensive and drive the QPS of the production database server up. Is there a way to set a "priority" on a particular database connection so that it will only use "off-cycles" to do these calculations? Maybe a proper response would be to replicate the tables I'm working on into a different stats database, but, unfortunately I don't have the resources in place to attempt such a thing (yet). Thanks in advance for any help, Josh

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  • mysql Delete and Database Relationships

    - by Colin
    If I'm trying to delete multiple rows from a table and one of those rows can't be deleted because of a database relationship, what will happen? Will the rows that aren't constrained by a relationship still be deleted? Or will the entire delete fail? Thanks, Colin

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  • stored procedure in MYsql access in PHP

    - by xcodemaddy
    Hi.. I am creating stored procedure ,here code : CREATE PROCEDURE `dbnm`.`getlogin` ( IN uid INT, IN upass VARCHAR(45) ) BEGIN if exists(select uphno,pass from user_master where uphno=uid and pass=upass)then ***true else ***false end if; END $$ DELIMITER ; i want return value(**true or **false) in stored procedure from PHP by calling sp PHP code: $res = $mysqli->query('call getlogin("1","rashmi")'); how to acesss boolean value in PHP from sp? Thanks

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  • PHP mysql select results

    - by Jordan Pagaduan
    <?php $sql = " SELECT e.*, l.counts AS l_counts, l.date AS l_date, lo.counts AS lo_counts, lo.date AS lo_date FROM employee e LEFT JOIN logs l ON l.employee_id = e.employee_id LEFT JOIN logout lo ON lo.employee_id = e.employee_id WHERE e.employee_id =" .(int)$_GET['salary']; $query = mysql_query($sql); $rows = mysql_fetch_array($query); while($countlog = $rows['l_counts']) { echo $countlog; } echo $rows['first_name']; echo $rows['last_name_name']; ?> I got what I want to my first_name and last_name(get only 1 results). The l_counts I wanted to loop that thing but the result is not stop counting until my pc needs to restart. LoL. How can I get the exact result of that? I only need to get the exact results of l_counts. Thank you Jordan Pagaduan

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  • Updating Checked Checkboxes using CodeIgniter + MySQL

    - by Tim
    Hello I have about 8 check boxes that are being generated dynamically from my database. This is the code in my controller //Start Get Processes Query $this->db->select('*'); $this->db->from('projects_processes'); $this->db->where('process_enabled', '1'); $data['getprocesses'] = $this->db->get(); //End Get Processes Query //Start Get Checked Processes Query $this->db->select('*'); $this->db->from('projects_processes_reg'); $this->db->where('project_id', $project_id); $data['getchecked'] = $this->db->get(); //End Get Processes Query This is the code in my view. <?php if($getprocesses->result_array()) { ?> <?php foreach($getprocesses->result_array() as $getprocessrow): ?> <tr> <td><input <?php if($getchecked->result_array()) { foreach($getchecked->result_array() as $getcheckedrow): if($getprocessrow['process_id'] == $getcheckedrow['process_id']) { echo 'checked'; } endforeach; }?> type="checkbox" name="progresscheck[]" value="<?php echo $getprocessrow['process_id']; ?>"><?php echo $getprocessrow['process_name']; ?><br> </td> </tr> <?php endforeach; ?> This generates the checkboxes into the form and also checks the appropriate ones as specified by the database. The problem is updating them. What I have been doing so far is simply deleting all checkbox entries for the project and then re-inserting all the values into the database. This is bad because 1. It's slow and horrible. 2. I lose all my meta data of when the check boxes were checked. So I guess my question is, how do I update only the checkboxes that have been changed? Thanks, Tim

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  • mysql good way of programing

    - by Syom
    i have the video gallery in my database, which has over 200 000 videos. in my home page in the site i show exactly some videos, which must satisfy to some criteria. and so, what is the question. is it a good way to sort videos every time the home page opene, or i must save the sort results somewhere in the database, and refresh them only if something change. i think it can save me a lot of time. what you think about it. thanks in advance.

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  • how to make a queue in php with mysql

    - by robert
    hy, in my script i run a exec() function to make a movie file with ffmpeg. the problem is ffmpeg can run only 1 time on the server, if 2 people are online on server and first one already run ffmpeg i want the second to wait until the first end the process how to code this? thank you

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  • MYSQL - Group by limit

    - by jono2010
    Hello Is there a simple way to LIMIT the GROUP BY results to the top 2. The following query returns all the results. Using 'LIMIT 2' reduces the overall list to the top 2 entries only. select distinct(rating_name), id_markets, sum(rating_good) 'good', sum(rating_neutral)'neutral', sum(rating_bad) 'bad' from ratings where rating_year=year(curdate()) and rating_week= week(curdate(),1) group by rating_name,id_markets order by rating_name, sum(rating_good) desc Results in the following :- poland 78 48 24 12 <- keep poland 1 15 5 0 <- keep poland 23 12 6 3 poland 2 5 0 0 poland 3 0 5 0 poland 4 0 0 5 ireland 1 9 3 0 <- keep ireland 2 3 0 0 <- keep ireland 3 0 3 0 ireland 4 0 0 3 france 12 24 12 6 <- keep france 1 3 1 0 <- keep france 231 1 0 0 france 2 1 0 0 france 4 0 0 1 france 3 0 1 0 Thanks Jon

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  • MySQL Student database beginner SQL employment expectations

    - by sammysmall
    Background, Student pursuing BSIT degree, employer expectations, entry level. I would like to solicit opinions from this forum as to what your professional expectations are as regards an entry level position in working in the database realm... I see many job opportunities that require a minimum of 2 or more years experience, how does one go about obtaining this experience (I have tried very hard to maintain a minimum 3.70+ GPA) but have ZERO work experience in this field... I spend non school time working in VB and SQL to try and increase my proficiency. I have considered postponing my job search until I obtain certifications from brainbench etc... Any criticism and or advise is welcomed... Again I have no experience in database other than undergrad work in class. Thank you for your time sammysmall

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  • MySQL REGEXP: matching blank entries

    - by Erwin Paglinawan
    Hi, I have this SQL condition that is supposed to retrieve all rows that satisfy the given regexp condition: country REGEXP ('^(USA|Italy|France)$') However, I need to add a pattern for retrieving all blank country values. Currently I am using this condition country REGEXP ('^(USA|Italy|France)$') OR country = "" How can achieve the same effect without having to include the OR clause? Thanks, Erwin

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  • Mysql query problem....

    - by Avinash
    I have below values in my database. been Lorem Ipsum and scrambled ever scrambledtexttextofandtooktooktypetexthastheunknownspecimenstandardsincetypesett Here is my query: SELECT nBusinessAdID, MATCH (`sHeadline`) AGAINST ("text" IN BOOLEAN MODE) AS score FROM wiki_businessads WHERE MATCH (`sHeadline`) AGAINST ("text" IN BOOLEAN MODE) AND bDeleted ="0" AND nAdStatus ="1" ORDER BY score DESC, bPrimeListing DESC, dDateCreated DESC It's not fetching first result, why? It should fetch first result because its contain text word in it. I have disabled the stopword filtering. This one is also not working SELECT nBusinessAdID, MATCH (`sHeadline`) AGAINST ('"text"' IN BOOLEAN MODE) AS score FROM wiki_businessads WHERE MATCH (`sHeadline`) AGAINST ('"text"' IN BOOLEAN MODE) AND bDeleted ="0" AND nAdStatus ="1" ORDER BY score DESC, bPrimeListing DESC, dDateCreated DESC Thanks Avinash

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  • PHP + SQL Server or VB.NET + MySQL

    - by Muhammad Mussnoon
    Can someone suggest that out of the two mentioned (odd?) combinations, which is less odd, or in other words, is less trouble to work with + maintain. If it helps, the system is going to have two front-ends - one web application and one desktop application. The desktop application is going to be coded using VB.NET, and the web application in PHP. There's really no reason why the desktop application can't be replaced by a web application as well - except that one of the programmers seem to really want to code it in VB.... However, none of us have experience working with either of these pairs (you could easily call us n00bs), so we are a bit apprehensive to start. P.S. hosting service will be gotten from some provider and not be on the client's own server.

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  • Why mysql is not storing data after "#" character?

    - by Nitz
    Hey Friends, I have made one form in which there is rich text editor. and i m trying to store the data to database. now i have mainly two problem.. 1) As soon as the string which contents "#"(basically when i try to change the color of the font)     character, then it does not store characters after "#". and it also not store "#" character also. 2) although i had tried....in javascript html.replace("\"","'"); but it does not replace the double quotes to single quotes.

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