mysql

same table, 1 field to 2 field query

I have 2 tables: 1st holds employees (of ones in any position) and the 2nd holds manager employee relations with id numbers. I want to write a query like 1st field: name(employee), 2nd field: name(manager) How can I do that? ...

MySQL GROUP BY with three tables

I have the following tables: posts (post_id, content, etc) comments (comment_id, post_id, content, etc) posts_categories (post_category_id, post_id, category_id) and this query: SELECT `p`.* , COUNT(comments.comment_id) AS cmts , posts_categories.* , comments.* FROM `posts` AS `p` LEFT JOIN `posts_categories` ...

Problems upgrading MySQL application from Delphi 2006 to 2010

I upgraded my Delphi to 2010 version and I tried to open and run application written in Delphi 2006. The app is using mysql by dbexpress with libmysql.dll and a second driver found somewhere on the Internet. I can't run it on 2010. I'm always getting "missing libmysql.dll library". I tried to get new version of it but it didn't help. C...

Rails/mysql SUM distinct records - optimization

Hey. How would you optimize this SQL SELECT SUM(tmp.cost) FROM ( SELECT DISTINCT clients.id as client, countries.credits_cost AS cost FROM countries INNER JOIN clients ON clients.country_id = countries.id INNER JOIN clients_groups ON clients_groups.client_id=clients.id WHERE clients_groups.group_id IN (1,2,3,4,5,6,7,8,9) ...

generic Mysql stored procedure

Hi, I have the fallowing stored procedure: CREATE PROCEDURE `get`(IN tb VARCHAR(50), IN id INTEGER) BEGIN SELECT * FROM tb WHERE Indx = id; END// When I call get(user,1) I get the following: ERROR 1054 (42S22): Unknown column 'user' in 'field list' ...

MYSQL: Limit Word Length for MySql Insert

Hi, every search query is saved in my database, but I want to Limit the Chracterlength for one single word: odisafuoiwerjsdkle --> length too much --> dont write in the database my actually code is: $search = $_GET['q']; if (!($sql = mysql_query ('' . 'SELECT * FROM `history` WHERE `Query`=\'' . $search . '\''))) { exit...

How to insert Search Query into MYSQL - Check for Double Words

Hi, what is the best method to insert a search query into MySql and check for double words? (for showing up the last searches and a collection of searches) maybe something like this: < ?php /*------------------------------ Read and save the search query -------------------------------*/ $querystat = mysql_real_escape_string($_GET['q'...

Executing multiple update statements in PHP

I have three update statements to be executed in PHP, i am getting the values of all these as return parameters. How to execute each statement independely and finally show the end user the result that it has been successfully updated. <?php public function name($parameter1,$parameter2.... $parametern) { } ?> Then...

Grouping records from while loop | PHP

I'm trying to group down records by their priority levels, e.g. --- Priority: High --- Records... --- Priority: Medium --- Records... --- Priority: Low --- Records... Something like that, how do I do that in PHP? The while loop orders records by the priority column which has int value (high = 3, medium = 2,...

Storing class constants (for use as bitmask) in a database?

Let's say I have a class called Medium which can represent different types of media. For instance: uploaded video embedded video uploaded image embedded image I represent these types with contants, like this: class MediumAbstract { const UPLOAD = 0x0001; const EMBED = 0x0010; const VIDEO = 0x0100; ...

MySQL: How to do a conditional update?

Hi, I'm trying to a create an update statement along the following lines: TABLE car: id | owner_id | type | status An owner can have multiple cars. UPDATE car c SET c.type = 1 WHERE c.owner_id IN ($ids) AND c.status = [1 IF THIS OWNER HAS A CAR WITH 1, ELSE A CAR WITH 0] // ... ??? $ids is reasonably small (under 5...

MYSQL: Pull Only Words with Minimum Character length

Hi, how can I pull only words with maximum 50 Characters from MYSQL? $query = "SELECT * FROM example ORDER BY ID DESC LIMIT 200"; ...

Replace data in MySQL table with data from another table

I am trying to modify an existing MySQL database for use in a new application. I have a table of items (table_items), which has multiple fields, including "ItemID" and "ItemName". I have another table (table_list) which has "ItemName" in it, but no ItemID. I need to either update this table to contain ItemID instead of ItemName, or creat...

Using a table-alias in Kohana queries?

I'm trying to run a simple query with $this->db in Kohana, but am running into some syntax issues when I try to use an alias for a table within my query: $result = $this->db ->select("ci.chapter_id, ci.book_id, ci.chapter_heading, ci.chapter_number") ->from("chapter_info ci") ->where(array("ci.chapter_number" => $chapter, "ci.book...

Inventory count in CakePHP

We are developing an inventory tracking system. Basically we've got an order table in which orders are placed. When an order is payed, the status changes from 0 to 1. This table has multiple children in another table order_items. This is the main structure. CREATE TABLE order( id INT UNSIGNED AUTO_INCREMENT PRIMARY KEY, user_id...

Join Query returns empty result, unexpected result

Hello all, Can anyone explain why this query returns an empty result. SELECT * FROM (`bookmarks`) JOIN `tags` ON `tags`.`bookmark_id` = `bookmarks`.`id` WHERE `tag` = 'clean' AND `tag` = 'simple' In my bookmarks table, I have a bookmark with an id of 70 and in my tags table i have two tags 'clean' and 'simple' both that have the colu...

Rails problem find by sql

I have this query and I have an error: images = Image.find_by_sql('PREPARE stmt FROM \' SELECT * FROM images AS i WHERE i.on_id = 1 AND i.on_type = "profile" ORDER BY i.updated_at LIMIT ?, 6\ '; SET @lower_limit := ((5 DIV 6) * 6); EXECUTE stmt USING @lower_limit;') Mysql::Error: You have an error in your SQL syntax; c...

Separate Query for Count

Hello, I am trying to get my query to grab multiple rows while returning the maximum count of that query. My query: SELECT *, COUNT(*) as Max FROM tableA LIMIT 0 , 30 However, it is only outputting 1 record. I would like to return multiple record as it was the following query: SELECT * FROM tableA LIMIT 0 , 30 Do I have to use s...

Checking and stripping before storing in MySQL

I just found out because someone had a ' in their last name and it caused the script to not update anything after that. What's the best way to make their last name safe of any potental damaging characters? ...

How do I connect to mysql from php ?

Hi guys. I'm working through examples from a book on php/mysql development. I'm working on a linux/apache environment. I've set up a database and a user. I attempt to connect with this line of code: $db_server = mysql_connect($db_hostname, $db_username, $db_password); I get this error: Warning: mysql_connect() [function.mysql-c...