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  • SQL SELECT Join?

    - by SurfingCat
    Hello, i got a MySql DB. There is a table with products and orders. Structure: Products: product_id, name, manufacturers_id Orders: orders_id, product_id, quantitiy Now I want to get all orders (show only products where product id=1). I tried: SELECT orders.orders_id, orders.product_od FROM products, orders WHERE products.manufacturers_id = 1 GROUP BY orders_id ORDER BY orders_id But this doesnt work

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  • Serialize checkbox array, also get checkboxes with off-value

    - by guzh
    Hi, I was wondering if this is possible. The serialize-string will be inserted in a mySQL-database, so it would be fine if all checkboxes would be inserted and not only the ones that is ticked(on). it's possible to make on column in the database for each of the checkboxes, and use this if/else-statement: if(isset($_GET['checkbox'])) { // It's checked! } else { // not checked! } but its a bit unappropriate...

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  • php cookies block access to directories

    - by user342391
    I have a mysql database of users that can login to my site and view content. I would like to block a couple of directories from certain users. What is the best way to do this. Currently when a user logs in a cookie is created with their customer id and the customer is is used to display their content. How would I block entire directories from my users???

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  • What is the standard way to deploy memcached?

    - by Tom
    I have two IIS servers and two MySQL servers. On all servers I have some available memory (More than a GB). What is the standard way to deploy memcached? Should I add a new server especially for memcached, or should I use my existing servers? If so, which servers? Thanks in advance

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  • How to hack your own website

    - by Saif Bechan
    I am in late testing phase of my web application. The application will be tested at a larger scale now. During this time I want to try and hack my own system and application with some tools, scripts, etc. Mostly some code I can try and execute in the browser. I have backups for the whole system so even down to the kernel can be hacked. My system is nginx,apache,php,mysql on Linux CentOS.

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  • How to SELECT the last 10 rows of an SQL table which has no ID field?

    - by Edward Tanguay
    I have an MySQL table with 25000 rows. This is an imported CSV file so I want to look at the last ten rows to make sure it imported everything. However, since there is no ID column, I can't say: SELECT * FROM big_table ORDER BY id DESC What SQL statement would show me the last 10 rows of this table? The structure of the table is simply this: columns are: A, B, C, D, ..., AA, AB, AC, ... (like Excel) all fields are of type TEXT

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  • Advanced Form Validation in JavaScript

    - by Kaji
    I'm already familiar with how to use onSubmit to evaluate form content against RegEx to ensure it meets static parameters for acceptable content. What I'm wondering is if there is a way to further provide validation against a MySQL database, such as if you want to make sure an e-mail address hasn't been used yet before submitting a form and having to re-load the field data back into the proper places for correction.

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  • SQLite - ON DUPLICATE KEY UPDATE

    - by Alix Axel
    MySQL has something like this: INSERT INTO visits (ip, hits) VALUES ('127.0.0.1', 1) ON DUPLICATE KEY UPDATE hits = hits + 1; As far as I'm know this feature doesn't exist in SQLite, what I want to know is if there is any way to archive the same effect without having to execute two queries. Also, if this is not possible, what do you prefer: SELECT + (INSERT or UPDATE) or UPDATE (+ INSERT if UPDATE fails)

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  • Whats better query with long where in condition or many small queries?

    - by DCrystal
    Maybe it's a little dumb, but i'm just not sure what is better. If i have to check about 30k rows in db for existanse, what i'd do? #1 - one query select id from table1 where name in (smth1,smth2...{till 30k}) #2 - many queries select id from table1 where name=smth1 Though, perfomance is not the goal, i don't want to go down with mysql either ;) Maybe, any other solutions will be more suitable... Thanks.

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  • Why are there so many DB management Systems ?

    - by mr.bio
    Hi there , i always asked myself. Why are there so many DB management systems? I am not an DB expert and i never thought about using another DB than mysql. Programming languages offer different paradigms, so there it makes sense to choose a specific language for your purpose. What are factors to choose a specific DB management system ?

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  • what's the best practice to config Hibernate-Spring for multiple database relationship?

    - by nazila
    We have a main mysql database which all of the applications within our organization need the data within this database. How can I config my java web application to use this database with it's specific database when I use Spring and Hibernate within my application? How can I config JPA annotations for example between CONTRACT table within my database and COUNTRY table within our main database? what's the best practice to do this?

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  • Search relevance from XML docs (XQuery?) vs MySQL

    - by Marius
    Hello there, I have a website where documents are saved in xml documents, all with the same structure. I need a search engine where I am able to choose documents with the highest relevance according to the key words given by a searching user. I thought it could (?) be a good idea to have one using XQuery rather than having the information stored twice (in XML docs + mysql database) and querying the mysql database for relevance searches. Is XQuery any good for this, and how, and what speed can I expect on +1000 documents of about 7kb each. Thank you for your time. Kind regards

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  • filter duplicates in SQL join

    - by Will
    When using a SQL join, is it possible to keep only rows that have a single row for the left table? For example: select * from A, B where A.id = B.a_id; a1 b1 a2 b1 a2 b2 In this case, I want to remove all except the first row, where a single row from A matched exactly 1 row from B. I'm using MySQL.

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  • How to split records per hour in order to display them as a chart?

    - by Axel
    Hi, I have an SQL table like this : sales(product,timestamp) I want to display a chart using Open Flash Chart but i don't know how to get the total sales per hour within the last 12 hours. ( the timestamp column is the sale date ) By example i will end up with an array like this : array(12,5,8,6,10,35,7,23,4,5,2,16) every number is the total sales in each hour. Note: i want to use php or only mysql for this. Thanks

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  • CakePHP - Paginate / Query: find lowest of multiple fields & order by it

    - by Atea
    I am using CakePHP for a price-comparison website. I have a table products with fields: id, pride_regular, price_action. I would like to combine the fields price_regular and price_action into a dynamic field: price. The lowest value of these two fields should be the value of the new price field. Also I want to order on it Ascending. Should I use a custom MySQL-query?

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  • question about group by

    - by chun
    Hi in mysql how to write a sql like this, to get the amount of X 20 and <20 select date, numberOfXMoreThan20,numberOfXLessThan20, otherValues from table group by (date, X20 and X<20) thanks

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  • kohana quotes in query.

    - by peter
    hey, i want to format a date in mysql using DATE_FORMAT(tblnews.datead, '%M %e, %Y, %l:%i%p') i cant seem to get the quotes right , so i keep getting errors. how would you put this in a query?

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  • table outputs blank rows on the browser

    - by fusion
    following the answer here, altho it solved my problem, it displays a blank table. .something like this. the data does get inserted in the mysql but the table displays nothing. the codes are posted on the above link. your help would be appreciated. thanks!

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  • Dynamic sql vs stored procedures - pros and cons?

    - by skyeagle
    I have read many strong views (both for and against) SPs or DS. I am writing a query engine in C++ (mySQL backend for now, though I may decide to go with a C++ ORM). I cant decide whether to write a SP, or to dynamically creat the SQL and send the query to the db engine.# Any tips on how to decide?

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  • Order by Domain Extension Name using CodeIgniter Active Record Class

    - by allan
    $extension = “SUBSTRING_INDEX(domain_name, ‘.’, -1)”; $this->db->order_by($extension, “asc”); It says: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ‘asc LIMIT 50’ at line 44 But its working when I didn’t used the $this-db-order_by Active Record Class such as this one: $this-db-query(“SELECT * FROM domain ORDER BY SUBSTRING_INDEX(domain_name, ‘.’, -1)”); Anyone please help me. Thanks.

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