mysql

Least intensive way to find all nested subcategories using mysql query

I have a database in which items are placed into categories. Some of these categories are nested, so as an example: Animals > Birds > Parrots Animals > Birds > Penguin Animals > Mammals > Cats Animals > Mammals > Dogs Animals > Reptiles > Snakes Plants > Trees Plants > Flowers etc I have these in a table along the lines of ...

Frequency Table by user in SQL

Very basic SQL question (DB is MySQL): I want a table of number of transactions by users. User ID Transaction count 1 43 2 213 3 0 4 23 5 0 In a table I have the two relevant records (user_id and buy_count). How could I get the table I want? Thanks, Roberto ...

Can this be done with single SQL query

I'm using MySQL. I have a table Type SubType 1 1 1 5 1 6 1 8 2 2 2 3 3 1 3 2 3 3 For each type there is some number of subtypes. For every subtype in a type there is a corresponding subtype in the next type: (1,1) => (2,2) (1,5) => (2,3) (1,6) => (2,2) (1,8) => (2,3) (2,2) => (3,1) (2,3) => (3,2) In case you haven't seen the patter...

Update ancestors in a nested set?

I am using nested sets to represent a tree in mysql, like so: Tree ID title lft rgt Given the ID of a node in the tree, what is the easiest / best way to UPDATE that node as well as all of it's ancestors? For example, let's say that the node ID (36) is 4 levels deep in the tree. I would like to update its title, as well as every par...

Count the frequency of votes in MySQL

I am making a website where users can vote on which category a page is. They can vote that the page is in category a, b, c, or d. I need to find the most commonly occurring category in the MySQL row out of all the votes. Each time a user submits their vote, it submits the "category" that they voted for, and the "page_id". I have thi...

Why is it inserting 0's instead of blank spaces into my DB using php?

I have an insert: $sql = 'INSERT into orders SET fax_int_prefix = "'.$_SESSION['fax_int_prefix'].'", fax_prefix = "'.$_SESSION['fax_prefix'].'", fax_first = "'.$_SESSION['fax_first'].'", fax_last = "'.$_SESSION['fax_last']; The value of all of these fields is that they are blank right before the insert. Here is an example of one o...

PHP, MySQL - can you distinguish between rows matched and rows affected?

I am trying to write a PHP-MySQL database processor that is somewhat intelligent. When this processor decides it needs to make an update, I want to report if it was really successful or not. I thought I could use mysql_affected_rows... // Example: // After running query "UPDATE mytable SET name='Test' WHERE ID=1" $result = mysql_affec...

Does a SELECT happen all at once, or progressively

I have a process which finds a list of files to be deleted using a SELECT wheredelete= 'Y'. I set this process running the other day but it takes a while because it actually does the file deletions too. And in the middle of its long operation, I was using the application and deleted one more file. At this point I realised I didn't kno...

What ORMs work in medium trust?

Environment: C#, MySql, GoDaddy Shared Hosting (medium trust). Assuming the above environment, what ORMs will work in a medium trust environment? Also consider the following features: minimal code changes to the ORM library. minimal disabling of features to run in medium trust. Bonus feature: fluent interface There are a lot of ...

Detect how many times the users have click the button...

Hello guys. Just want to know if there is a way to detect how many times a user has clicked a button by using Jquery. My main application has a button that can add input fields depend on the users. He/She can adds as many input fields as they need. When they submit the form, The add page will add the data to my database. My current ...

MySQL GIS and Spatial Extensions - how to map regions and query against them

I am trying to make a smartphone app which will return a list of users within a certain proximity, say 100m. It's easy to get the coordinates of my BlackBerry and write them to a database, but in order to return a list of other users within 100m, I need to pull every other record from the database and compare the distance between the tw...

INNER JOIN syntax for mySQL using phpmyadmin

SELECT Question.userid, user.uid FROM `question` WHERE NOT `userid`=2 LIMIT 0, 60 INNER JOIN `user` ON `question`.userid=`user`.uid ORDER BY `question`.userid returns Error: 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 'INNER JOIN User ON question...

Magento Search returns All Products

I have set up a website (www.autobodypartsnow.com) and the search function has gone haywire. Whenever you search for anything, it returns every product in the system making it useless. I have fiddled around with it with no prevail. I have done the Like and FullText thing in the Configuration - nothing. I have reset the Search and FS ...

Mysql query help - Alter this mysql query to get these results?

Please execute the following queries first to set up so that you can help me:- CREATE TABLE IF NOT EXISTS `Tutor_Details` ( `id_tutor` int(10) NOT NULL auto_increment, `firstname` varchar(100) NOT NULL default '', `surname` varchar(155) NOT NULL default '', PRIMARY KEY (`id_tutor`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=4...

regex search a mysql text column

Okay, I thought my head hurt with regular regex, but I can't seem to find what I'm looking for with regexp in mysql. I'm trying to look for situations in news articles where a Textile-formatted url has not ended with a slash so: "Catherine Zeta-Jones":/cr/catherinezeta-jones/ visited stack overflow is ok but "Catherine Zeta-Jones":/cr/...

Deeply nested subqueries for traversing trees in MySQL

I have a table in my database where I store a tree structure using the hybrid Nested Set (MPTT) model (the one which has lft and rght values) and the Adjacency List model (storing parent_id on each node). my_table (id, parent_id, lft, rght, alias) This question doesn't relate to any of the MPTT aspects of the tree but I thought I'd le...

PHP & MySQL query value question.

How can I use the first query's id value $row['id'] again after I run a second query inside the while loop statement? To show you what I mean here is a sample code below of what I'm trying to do. I hope I explained it right. Here is the code. $mysqli = mysqli_connect("localhost", "root", "", "sitename"); $dbc = mysqli_query($m...

To share a table or not share?

Right now on my (beta) site i have a table called user data which stores name, hash(password), ipaddr, sessionkey, email and message number. Now i would like the user to have a profile description, signature, location (optional) and maybe other things. Should i have this in a separate mysql table? or should i share the table? and why? ...

Mysql select multiple colomn from non related tables

I have two table in mysql named rootpath with only one field 'root' and savecatogory with fields brandid,categoryid,name.There is no relation between these two tables.Now how can retrieve root,brandid,categoryid using single query.Please help me. ...

MySQL COUNT help

I'm trying to count all the ids form table3 that are related to the first two tables but I think my SQL code is wrong can some one help me fix it? Here is the code: $dbc = mysqli_query($mysqli,"SELECT table1.*, table2.*, COUNT(id) as num, table3.id FROM table1 INNER JOIN table2...