MySQL is an open-source, relational database management system.

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4
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1answer
277 views

Built to scale, or worry later?

I'm starting a service that offers websites that runs on a giant Wordpress multi-site. I have a cloud based vps with nginx-php5-php-fpm-mysql. Storage with Amazon S3, distribution with MaxCDN. WP ...
3
votes
3answers
8k views

How to validate WordPress generated password in DB using PHP?

I am working with site that is done with WordPress, and I need to add some parts that are outside WP, and to check user login, Logging users outside WP. I tried with md5 of password but it's not... ...
3
votes
3answers
4k views

How To Export/Import WordPress (MySQL) Database Properly Via Command-Line?

Normally, a MySQL database can be exported and imported using these simple SSH commands: Export: mysqldump -u USERNAME -p DATABASE_NAME > filename.sql Import: mysql -u USERNAME -p ...
3
votes
2answers
4k views

Get Previous & Next posts by Post ID

How can I go about getting the previous and next posts from outside the loop? Everything I try to do aside from the custom SELECT query (using get_posts or WP_Query) breaks stuff further down the ...
3
votes
7answers
2k views

WordPress MySQL & PHP Performance

have a website (www.americanbankingnews.com) that gets 40,000-50,000 page views today. It's currently sitting on a dedicated quad-core Xeon server with 8GB of ram. The site is powered by WordPress and ...
3
votes
2answers
760 views

Return only Count from a wp_query request?

Is it possible with the standard build-in tools in Wordpress to get wp_query to only return the count of an query? Right now, I’ve a query which has several meta_queries but what the only thing I’m ...
3
votes
1answer
2k views

How to disable `SQL_CALC_FOUND_ROWS` [duplicate]

Possible Duplicate: wordpress query causing load In the site I'm trying to optimize, I noticed several queries that are rather slow and start with SELECT SQL_CALC_FOUND_ROWS Searching this ...
3
votes
2answers
993 views

modify all posts of a category to “no comments allowed”

I'm looking for a way to modify all posts of a certain category to be "no comments allowed" without going into each post settings, one by one, and modifying manually. Perhaps a MySQL statement? ...
3
votes
1answer
365 views

Query both first_name and last_name from wp_usermeta at the same time

I'm trying to fetch both the first_name and last_name of all users at the same time, using the wpdb-object and the wp_usermeta table. I can't seem to figure out how to get both in the same query. ...
3
votes
2answers
335 views

WordPress for a very large website

I've searched and searched but I did not find an answer online. Also, I've posted this on StackOverflow and apparently it wasn't ok and I reposted this here. I hope it's ok. I have this website which ...
3
votes
2answers
9k views

Where is the content of widgets stored in mysql table

I have the cPanel access to a website but no wordpress login info. So I wants to change a widget content in the website. How can I change it through phpmyadmin. Where are that widgets sidebar data ...
3
votes
1answer
653 views

Using source control with WordPress

I just recovered from a pretty bad crash using Server 2008 Shadow copy. Ultimatly I didn't lose more than a few hours of work but a loss is a loss. I've decided to move to version control to prevent ...
3
votes
1answer
262 views

Can I explicitly specify ENGINE=InnoDB in Wordpress?

I converted all my tables to InnoDB, but the MySQL server (which I can't access, as I'm on shared hosting) has MyISAM as the default, so every new table that Wordpress creates (e.g. when I add a new ...
3
votes
1answer
938 views

Extending search query with additional $sentence value

Next in my quest to extend WordPress is altering how WordPress uses the the $sentence variable in posts_search to include an additional string, when the $sentence variable meets a certain criteria. ...
3
votes
2answers
899 views

How is the data stored in the database?

I have years of experience with PHP and MySQL, but just starting to develop plugins for WordPress and need some help. Currently, I am working on a plugin that will add extra functionality to another ...
3
votes
2answers
588 views

Search multiple meta keys at once

How would I modify the following SQL Query to allow me to search multiple meta keys at once? e.g. user_business AND user_about In the end I'll be searching about 40 - 50 different meta keys; or if ...
3
votes
2answers
701 views

mysql custom wp query

this code is designed to select posts with selected meta value in wordpress query <?php $values = $wpdb->get_results("SELECT DISTINCT meta_value FROM $wpdb->postmeta WHERE meta_key = ...
3
votes
1answer
4k views

delete unused postmeta

I love the comment by s_ha_dum : http://wordpress.org/support/topic/sql-query-to-delete-postmeta and havent tried it yet, but Im wondering just how 'clever' this actually is? Does the unused postmeta ...
3
votes
2answers
89 views

Wordpress will not operate correctly

My website is ImASpy.com. If you click on the link, Findings, this takes you to my first Wordpress page. It appears to work fine until you click on comments, or you try to go to the about page, which ...
3
votes
1answer
326 views

Multipart/formatted MySQL query problem

I'm creating a plugin and I want to automate the creation of a MySQL Trigger on a table. The problem seems to be that $wpdb->query doesn't appear to accept either multipart statements and/or formatted ...
3
votes
1answer
1k views

importing data from non-wordpress mysql db

I have created an import file to get the articles from a non-wordpress db and bring them in as posts in wordpress, I am not sure how to bring over the thumbnail image into my custom field I defined as ...
3
votes
1answer
570 views

Return ID of authors who have at least one post

I found a great piece of code here that returns the ID's of users by role. What I would like to do is modify it so it only returns the ID's of the users who have at least one post. I have tried to ...
3
votes
2answers
151 views

Query meta field using between

I'm trying to Query some lattitude and logitude and then I get some long numbers and apperently the Query dont like that. Let says I have these in the database Meta-key: lat Meta-value: 54.3415000 ...
3
votes
3answers
13k views

WooCommerce with thousands of products - site is very slow - optimize db queries? [closed]

So far I've got around 8,000 products in my WooCommerce and the product page on the front end takes several seconds to load, even after caching. My VPS host says that I should have multiple ...
3
votes
3answers
749 views

Fulltext search in posts sorted by relevancy

I'm building a custom search page and what I need is to sort results by relevancy (eg. occurences of a keyword) Using MySQL docs I've built this query: SELECT ID FROM $wpdb->posts WHERE MATCH ...
3
votes
1answer
39 views

Converting mysql to $wpdb

I'm trying to convert this to using a $wpdb class. It will return all the enums possible and i have to use this $wpdb due to mysql_query giving me weird error (no database selected) Code is following ...
2
votes
3answers
525 views

Search and replace text across all posts

I had used the ZD Video Plugin for WP a long time, and now, since my move to WP 3.0.2, it doesn't work anymore. To embed a YouTube video using the plugin, I would just write ...
2
votes
3answers
6k views

Convert WordPress posts to products in WooCommerce

Is there anyway I could convert all the posts e have right now on our WordPress install into products using some MySQL query or something like that?
2
votes
2answers
13k views

Using Dynamic Data Pulled from a MySQL Table in a WordPress Page

I'd like to pull data from a mySQL database and put it in some tables in a WP page. I'm using WP 3.1.1. Imagine that I've got a table of sales figures that I want to pull from a mySQL database and ...
2
votes
3answers
970 views

Programmatically changing role information; editing role name and deleting

I am making system where I am delegating a lot of functionality to the front end of a system using Wordpress. I have listed all the roles (most of the custom) and need to ability for a logged in user ...
2
votes
2answers
12k views

Get Featured Image via direct sql query

I know you can use the wordpress methods for getting a featured image, however with this particular project I need to get the featured image via mysql query. Can anyone point me in the right ...
2
votes
1answer
1k views

How to Delete Old Comments by Date?

I run a contest/giveaway blog at www.mommylivingthelifeofriley.com and currently have over 160,000 comments on 1100 posts. I would like to find a way to delete all comments from my site which are ...
2
votes
1answer
33 views

What are conventions about the schema of the $table_prefix

I wonder if there are any conventions or best practices about the table prefix of any WordPress set up. The official documentation on wordpress.org does not make any statements to that topic. ...
2
votes
2answers
12k views

Mysqldump add drop table?

I notice in the Codex that the --add-drop-table option is displayed for backing up a database. Before I screw anything up, does this just mean that when the backup is eventually imported, the tables ...
2
votes
2answers
2k views

If I consider changing my WordPress DB tables to InnoDB, will it have an effect on the way WordPress works?

I found a superb post here about optimising WordPress for large installs. One of the steps refers to lighthttpd which sounds excellent but isn't currently supported by DirectAdmin. Last time I messed ...
2
votes
3answers
2k views

Import 10,000 Users into Wordpress WITH a specific ID for each user

I have a website which has about 10,000 users. I am converting this site over to Wordpress. The new site is ready to roll, but I have to bring over all the users. There are a number of plugins ...
2
votes
1answer
210 views

WP database error for comments_popup_link()

I'm using the comments_popup_link() function to show the number of comments for each post in a loop. <?php if (have_posts()) : while (have_posts()) : the_post(); ?> <?php if ( ...
2
votes
2answers
96 views

Proper way to work with wpdb to get user's firstname

I want to use $wpdb to get user's firstname. I know how to do it with php and mysql query, but I want to use $wpdb. The problem is that I don't know how to use it. I tried to create simple query to ...
2
votes
1answer
1k views

Successful or Error Message after running mysql code in functions.php

Just for this article, suppose there is a code that I want to run on my WordPress' functions.php file. It's a code to delete mysql table on my database. For example, here's the code: $wpdb->query( ...
2
votes
1answer
1k views

Can I use MariaDB instead of MySQL in wordpress?

Is it possible to use MariaDB instead of MySQL in Wordpress installation? If possible: how do I do that? Is there any drawback or complexities?
2
votes
2answers
526 views

How to do a MySQL dump from production site without using a search and replace script for local development?

I performed a MySQL dump of my WordPress production database to be imported into my local development environment. I plan on frequently performing this database dump and import. Is it possible for me ...
2
votes
1answer
1k views

How to change post format from Aside to Image for all posts?

I have a blog where all the posts had the post format Image. This morning I see that somehow they have all been changed to Aside. I'm still trying to figure out how this happened, but in the ...
2
votes
2answers
442 views

Database slowdown after update to 3.4.1

I own a wordpress installation, and Updated to 3.4.1. After the upgrade, I got a very strange slowdown to my wordpress. After all, I used the define('SAVEQUERIES', true); in my wp-config.php with ...
2
votes
2answers
562 views

sql query to put quotes around numbers in img tag

I have quite a few old posts that contain an img tag with height and width with no double quotes around the numbers. For example: <img height=319 alt="" ...
2
votes
1answer
2k views

Split WP install between 2 databases?

Is it possible for Wordpress to work from two databases? The reason I ask is that we're approaching our 100mb limit for database size on our host (1and1) but have up to 100 databases, so what I was ...
2
votes
1answer
637 views

if statement on database query

Part of a voting script I'm working on: I'm checking a custom table in my WP database to see if a user already voted for a post by checking the IP address and the post id. If the user's IP already ...
2
votes
1answer
35 views

WordPress and automated MySQL backups to a different host

I'm having the following setup. A development computer in my local network and a production server with a real internet domain. Developing the PHP/CSS files on my dev computer for my theme is handled ...
2
votes
1answer
117 views

Using $wpdb Class to Pull Recent Comments Across a Network

Been looking for a clean and simple way to produce comments from across a network using the $wpdb database class. I did find this answer, which has been protected, and is four years old. I wrapped ...
2
votes
1answer
584 views

$wpdb and MySQL Create Trigger

Do $wpdb's methods not accept a MySQL CREATE TRIGGER query? I tried it with $wpdb->query( $sql_trigger ) over and over again without success. Throwing the create-trigger-query on phpMyAdmin the ...
2
votes
2answers
1k views

Concurrent / simultaneous MySQL connections

I've been looking for the best WordPress hosting for me and I'm wondering how many MySQL connections at once WordPress requires? I know this is kind of general question but how does it look for you? ...