Professional Hypertext Preprocessor, a widely used platform for dynamic web applications.
1
vote
0answers
108 views
big mysql database optimization
My Joomla mysql database has about 3.4 million rows in content table. It is just static article. Very slow and often use out of resources. To speed up it, I segmented it into 6 sub-tables and added ...
9
votes
1answer
149 views
Calculate MATCH() AGAINST() scores from UNIFIED QUERY not FOR EACH TABLE
I am trying to have a score for entire section of SELECT statements
SELECT *,MATCH(`result`) AGAINST('keyword') as `score` FROM `table1` WHERE MATCH(`result`) AGAINST('keyword')
UNION
SELECT ...
0
votes
1answer
611 views
Importing CSV file to MySQL via PHPMyAdmin
I am currently stuck and unable to upload a complete CSV file into a MySQL database. Unfortunately, the nice folks at Stackoverflow haven't been able to help me solve this issue, so I'm hoping someone ...
1
vote
2answers
76 views
Cannot INSERT into database on a shared server
I have launched an application on a shared server but I cannot INSERT any data. I thought maybe I don't have privileges so I did SHOW GRANTS in my application then die()
The result was [ EDITED ]:
...
2
votes
1answer
291 views
how to retrieve rows of different dates using IN clause
My table structure:
+-----------------+--------------+------+-----+-------------------+----------------+
| Field | Type | Null | Key | Default | Extra |
...
0
votes
1answer
193 views
Too many records on database and how to handle it? MySQL is it good to clone?
I am doing a social network and came up with the following concern regarding database storage. Let's put facebook as an example, imagine 2,000 photos per user, just 1,000 users, it would equal to ...
3
votes
2answers
71 views
Understanding COUNT() as `count`,
I'm currently learning how to build a site in PHP mysql. However, I seem to fail to understand COUNT() as count and wouldn't mind some further explanation.
I get the principles of COUNT, 0 || 1, and ...
-1
votes
2answers
92 views
How to update an SQL column using a known perm link while appending a value from another column within the same table? [closed]
Larger view of the issue is here: http://i1268.photobucket.com/albums/jj572/LinuxOwner/question.png
0
votes
1answer
181 views
Deleting Data From Multiple Tables
Suppose,I've a table called UNIVERSITY containing universities name:
universityID universityNAME isACTIVE
7 GNDU 1
6 PU 1
5 ...
1
vote
2answers
169 views
PHP-MYSQL messaging system performance problems
I want to create a messaging module for the social network web-site project (PHP & MySQL) I've been working on. What substructures do well-known sites use for modules like this?
I think, ...
1
vote
1answer
50 views
Sanitizing a form's database input while retaining basic HTML markup
Is there a way to sanitize database input (say, for a comment form), which also allows for the end user to use basic HTML styling markup? As in, if a user wraps their text in <i>/<em> or ...
4
votes
3answers
508 views
InnoDB Master-Master replication goes inconsistant after power failure tests
Afternoon gents,
I'm currently stress testing a Master-Master replication setup using InnoDB as database engine.
We're using this simple script for testing which we run in Linux CLI from a remote ...
1
vote
1answer
223 views
calculate the difference between two column aliases in a SELECT statement?
I'm not sure how to do the last part of my query, which is doing calculations directly with the aliases: (SUM(task_avg - minutes) AS difference. I don't think I can do it as easy as I'd like, but ...
0
votes
0answers
173 views
Trouble with PDO query + LEFT JOIN [closed]
I'm having trouble with a specific query (PDO style) that selects 4 fields from a table with a simple condition : contact_type='a' , label_id = a value (number) and also it checks that the particular ...
2
votes
1answer
533 views
shopping cart database schema
I need help creating the schema for a database to hold information relative to a web user's shopping cart/session. Each session will have a session ID, a time stamp holding time of creation, an expiry ...
0
votes
1answer
56 views
Searching through lots of applications
Google search has instant search feature. While you are typing, it finds the pages. Apple.com search box. StackExchange ask question part finds similar questions while you are typing question title.
...
0
votes
1answer
56 views
Is Index Used for This Query
If so, which one?
How do we know?
I have 3 indexes in a query. Actually only the first 2 should be useful
{
"v": NumberInt(1),
"key": {
"LongitudeLatitude": "2d",
"Prominent"▼: ...
0
votes
1answer
355 views
database creation using codeigniter database dbforge class gives “Access denied for user 'username'@'localhost' to database 'database_name' ”
Using codeigniter database dbforge class I have created a database and loaded that database as the current database and created tables in localhost WAMP server. But when I uploaded it to the server I ...
2
votes
1answer
479 views
Mongo connection failing with 'Transport endpoint is not connected'
I have a 2 server installation.
A web server with Apache and a DB server with MongoDB.
I am load testing it, and on ~300 RPS I am getting this error:
PHP Fatal error: Uncaught exception ...
3
votes
3answers
178 views
Database design for changing number of fields
Google Contacts lets you to enter more than one phone number, or email address for a contact. You can add as many as you want. I don't know if there is a limit, other than practical list size. To ...
0
votes
0answers
51 views
MySQL database design help
EDIT: also posted on stackoverflow: http://stackoverflow.com/questions/12148715/mysql-database-design-check-in-system
I am attempting to build a check-in system for an office building.
What happens ...
0
votes
1answer
367 views
WorkAround for PHP PDO(with libpq V 9.1.4) binding for use of CITEXT?
The scenario
Two systems(not server) running PHP and PostgreSQL with the following versions
Fedora 15:
PHP
PHP 5.3.13 (cli) (built: May 9 2012 14:38:35)
Copyright (c) 1997-2012 The ...
1
vote
1answer
158 views
MySQL table locks solution -> InnoDb / Partitions
I'm experiencing many table locks in a MyISAM MySQL table that is pretty big (Constx10xGB and 15M rows).
It's mainly caused due many heavy inserts. My current thoughts to optimize:
Changing to ...
2
votes
2answers
113 views
SQL SELECT Kill FROM problem
$sql = "SELECT Kill FROM tbl_pvporderview";
Problem is that il lend up with : Incorrect syntax near the keyword 'Kill'.
Cuz kill is a TSQL command... any way to bypass it?
I cant change the column ...
0
votes
0answers
275 views
Sqlsrv sqlsrv_num_rows FALSE, adding cursor type times out
$sql = "SELECT * FROM lastdeath";
$result = sqlsrv_query( $con, $sql);
if( $result === false )
{
die( print_r( sqlsrv_errors(), true));
}
$row_count = sqlsrv_num_rows($result);
echo $row_count;
...
3
votes
1answer
1k views
Mongodb - Returning the points nearest to a location, with distance
What is the mongodb's equivalent to this query:
SELECT 111151.29341326*SQRT(pow(-6.186753-Latitude,2)+pow(106.772835-Longitude,2)*cos(-6.186753*0.017453292519943)*cos(Latitude*0.017453292519943)) as ...
3
votes
2answers
231 views
Which graph database for search engine and gis?
I just learned there are "graph databases" out there, which are more suited for two applications "search engine" and especially "gis".
To avoid discussions weather a relational DB is better suited ...
1
vote
0answers
176 views
MySQL GROUP BY and ORDER BY giving inconsistent results
I'm currently working with WordPress, and I've added a new meta value which is a number between 0 and 30. Zero is ignored and up to 30 need to be organised in order and only the latest (based on the ...
1
vote
1answer
378 views
“Mysql has gone away” heavy multiple insert
I am stuck because Mysql server will go away after executing this part of code this function will update the database with the new RSS feeds which are stored in ToUpdate but Mysql stops working. Every ...
3
votes
2answers
19k views
How to resolve too many connections and fatal error in mysql running on vps
I am running an application PHPlist on my linode server, simultaneously running 12 php scripts which open mysql connection, now when i access phplist it shows lot of times an error shows:
Fatal ...
1
vote
1answer
2k views
Connecting remote MySQL database to local MySQL database?
I want to write PHP code to be embedded in a Drupal7 module.
I want to call a procedure which can copy newly generated data in the local MySQL database to a remote MySQL database.
When data is ...
2
votes
1answer
631 views
How to speed up mysql query?
I have query :
SELECT
`school`.`ARCO_name`,
`student-`.`ClassSize_7`,
`student-`.`ClassSize_8`,
`degree_o`.`degree_code`,
`accredit`.`full_faculty_3`,
...
1
vote
0answers
500 views
SQL query optimization in Prestashop e-Commerce solution
I'm working on a layered navigation module within Prestashop e-Commerce solution.
I'm trying to optimize a SQL query which creates a temp table during execution. I think this is creating a ...
3
votes
3answers
3k views
How to use insert delay with the InnoDB engine and use less connection for insert statements?
I'm working on an application which involves a lot of database writes, approximately ~70% inserts and 30% reads. This ratio would also include updates which I consider to be one read and one write. ...
0
votes
2answers
3k views
Script to show mysql health status?
Kev suggested this question ( http://stackoverflow.com/questions/10524981/php-script-to-show-mysql-health-status ) is better fitted here.
I know phpMyAdmin can shows the lists of mysql vars and ...
4
votes
1answer
389 views
mysql change password in session
I changed my password from old hash to a new hash using the following query
SET SESSION old_passwords=FALSE;
SET PASSWORD = PASSWORD('[your password]');
I found this query on Mysql password hashing ...
3
votes
2answers
134 views
Selecting large data set on windows and linux
I need to parse a large data set, something like:
mysql_query("SELECT * FROM largeTable")
while($r = fetch()) {
//> Do something
}
I just need 1 row to be in memory at time, because I need to ...
1
vote
1answer
181 views
How to get a unique highscore per user
I have the following tables: users, highscores
I would like to get the top ten best results in highscore. The scores should be unique, meaning one score per user. I tried using INNER JOIN and GROUP ...
2
votes
3answers
588 views
Move Oracle data to and from MySQL with the help of PHP?
My application is in PHP which by default uses MySQL db. I have connected MySQL & Oracle dbs with PHP.
Now I want to move data from Oracle db into Mysql db through PHP. Is it possible to do? Is ...
1
vote
1answer
108 views
Mysql database design with XML
I intend to create a wiki webpage, but it has some few more limitations than regular wikis. The content is completely user-editable, but the structure of the page is determined previously. To make ...
1
vote
1answer
79 views
keeping database columns consistent with documentation
For a project, the client wanted to be able to add fields to any item and have them be searchable. To make them searchable, that would require the fields to take a column, but that would make the ...
0
votes
1answer
100 views
What would be the best way to design a table in Mysql that handles read items in an RSS feed reader?
I'm working on an RSS feed reader, it is mostly functionnal. But after some time beta testing it, I noticed that its very slow running some queries on a table that handles all the items that have been ...
0
votes
1answer
367 views
I want to count all the rows for todays / yesterdays date based on a DATETIME - mysql+php
I have database "db2" with table "menjava"
In table menjava have "id", "author" and "date_submitted" field
id - auto_increment
author - int(11)
date_submitted - datetime
I want to count all the ...
4
votes
6answers
21k views
importing large SQL file phpmyadmin
I am trying to import this SQL file in phpmyadmin and got this message
#1064 - You have an error in your SQL syntax;
check the manual that corresponds to your MySQL server version
for the right ...
2
votes
2answers
677 views
Preventing mysql deadlocks in your php application that uses SELECT… LOCK IN SHARE MODE
If I understand SELECT ... LOCK IN SHARE MODE correctly, you can place it into a mysql transaction to select the rows you will be working with during that transaction.
This is done in order to "lock ...
4
votes
1answer
1k views
MySQL 'LOAD DATA INFILE' : Can't replace entry when foreign key exists
Here's a minimal case for my database scheme:
CREATE TABLE `test` (
`id` int(11) NOT NULL,
`name` varchar(22) DEFAULT NULL,
PRIMARY KEY (`id`),
UNIQUE KEY `id` (`id`)
) ENGINE=InnoDB DEFAULT ...
3
votes
3answers
125 views
Is there any way to temporarily enforce columnar uniqueness on items currently being inserted?
Is there any way to temporarily enforce columnar uniqueness on items currently being inserted? For instance, I'm splitting payments and charges to their own tables from a previously unified ...
6
votes
1answer
253 views
Application Settings in Database
In the past I have stored all generic settings and configuration items such as: custom application title, home address, version, debug, etc.. all in a "settings.php" file that I would include into all ...
3
votes
2answers
332 views
Testing Query Speed
When I'm running a query for the first time, it takes x miliseconds to be executed. When I run it the second time it takes a lot less time. I assume that it is some caching involved in this mechanism, ...
3
votes
2answers
514 views
MySQL connection doesn't work anymore
I had two MySQL servers running (127.0.0.1:3306 and 127.0.0.1:3307). Now I get this strange error: mysql_connect(): Lost connection to MySQL server at 'reading initial communication packet' I can ...
