WordPress stores user generated content, along with other configurable information, in a a database (typically MySQL).

learn more… | top users | synonyms

2
votes
4answers
608 views

Long option names fail silently?

This was really driving me crazy. I was debugging some code with code-generated transient names and they were failing like crazy for no apparent reason. After much much pain and experimentation I ...
-3
votes
3answers
167 views

Server database problem

i just transferred my website from shared server to VPS, but then it is not starting, when i inquired with the VPS technical support then they emailed me something this, which i am not ...
6
votes
2answers
2k views

Default table collation on plugin activation?

I'm following this to make my plugin auto-create a table when the plugin is activated, but what happens is that while all the tables (the whole db) are utf8_general_ci, the newly created table is ...
1
vote
4answers
474 views

Looking for a subscriber list management system

Is there any plugin that enables the creation of forms and has a smart tool for subscribers (not site visitors who registered) database management? I'm looking for a plugin that does that for a long ...
3
votes
2answers
3k views

Transient RSS feeds in wp_options not removed automatically?

I just noticed 55.000 entries(!) in my wp_options table. I had not been there for a while. So I ran: delete from `wp_options` where `option_name` like '_transient_timeout_rss%' delete from `...
0
votes
2answers
245 views

Best host for running large mem and processor intensive WordPress sites?

I host a number of WordPress sites, some of which have VERY large databases. I've gone through several popular web hosts though no joy yet. Any suggestions.
0
votes
3answers
349 views

Problems with moving my Wordpress site to another domain/server

I'm having problems moving a wordpress site from one domain to another. I've searched the site but couldn find a useful answer for my situation. Here's what i did: I made a backup of the website. ...
6
votes
3answers
1k views

Resetting comment count

Recently, I had to move to another domain and had to recreate all my MySQL tables on the enw server. I noticed that for some posts, the number of comments is doubled. Example - http://inversekarma.in/...
0
votes
3answers
441 views

Uknown meta entries in wp_postmeta

I'm working on a site that has been running for few years and had different maintainers so it's kind of a mess. What I found weird is a lot of entries in wp_postmeta where all the keys are numeric and ...
19
votes
4answers
12k views

Post meta vs separate database tables

When developing plugins that requires data storage, what's the pros and cons of using one method or another ? The explanation given in the codex is not detailed: Before jumping in with a whole ...
1
vote
2answers
256 views

greatest() function returns undefined property

I'm using the mysql GREATEST() function to compare two table fields and display in a loop either one with the highest integer value. The 2 fields consist of vote scores for posts: UP or DOWN. ...
2
votes
1answer
4k views

Safe way to find last inserted id in a table?

Is it safe to use $wpdb->insert_id; to find the id of a last updated row id just after an update? ex: $sql = $wpdb->insert($table_name, $arrayWithDataToInsert, array('%s','%s')); $...
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 ( ...
1
vote
1answer
371 views

Fastest way to get the comment and ping total count for a post

I'm making my own comment template (like this) and I need to know how can I get the comment and ping count for the current post, maybe using a fast database query or something like that? Note that I ...
0
votes
1answer
780 views

SQL error with custom query

I'm trying to create a custom post query for sorting posts that have been voted "thumbs up". I'm joining my custom "wp_post_votes" table (which stores the number of votes each post received) with ...
0
votes
2answers
1k views

Custom query_posts() parameter

I'm adding voting features to a theme. Visitors can vote posts Up or Down. I created a table for storing number of votes for each post and that works fine. Now I'm trying to sort posts by their votes. ...
1
vote
1answer
196 views

Prevent WordPress from loading comments

I'm displaying the comments for a post my way, using $comm = get_comments() and then passing $comm to wp_list_comments() (this is the reason why). How to disable WordPress from loading comments from ...
0
votes
2answers
5k views

How to query custom db table?

I am creating my first ever plugin for a membership site. I have a custom table named subscription with a subscr_user_id column whose values are taken from $current_user->ID. So when a current user ...
0
votes
1answer
136 views

What do these phpMyAdmin errors mean on my WordPress databaes?

I'm getting 3 very similar phpMyAdmin errors on one of my WordPress databases. More than one INDEX key was created for column `comment_approved` More than one FULLTEXT key was created for column `...
2
votes
1answer
672 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 ...
0
votes
1answer
1k views

add_action for publish_post doesn't work

I'm working on a personal voting plugin, I don't intend to release it publicly because I'm still learning WP. In general, you can vote posts "up" or "down". I have 2 tables, one collects IPs (to ...
4
votes
3answers
2k views

Creating two database tables via plugin

I'm working on a voting plugin for my site and I want to create 2 tables: one that stores votes and another that stores voter ips. In Codex it suggests to use an if statement to see if the table has ...
1
vote
1answer
824 views

Adding new row to wp_post table

I want to add 2 more rows (for voting up or down) to my default wordpress posts table. Would those rows be deleted when I update my WP version, or cause any other problem? An alternative would be to ...
0
votes
1answer
527 views

INSERT in table row fatal error

I just discovered this wonderful message board :-) Hopefully someone can help me with a Wordpress issue I can't figure out.. I added a hook to my plugin file to insert the post id of the immediate ...
1
vote
3answers
187 views

Recent comments from my blogs only

I'd like to create a list of recent comments, specific to each user on my network (Buddypress). My best idea so far is pretty lame: DB Query on all user's blogs, compare dates, select top 10 by date. ...
2
votes
1answer
801 views

Advice needed for importing custom field data and database structure

Looking for advice for the best method to accomplish the following. I have a custom page template with several custom fields/taxonomy. The data needed for these custom fields actually resides in ....
13
votes
3answers
637 views

Performance of my permalink structure?

I have read the discussion on the performance of different permalinks on the wp hackers mailinglist, THIS forum and around Google. I could however not really deduce if the permalink structure I have ...
1
vote
2answers
1k views

Custom Taxonomies Incorrectly Counting Revisions?

(Moderator's note: The original title was "The count of my custom taxonomy is incorrect; it's counting revisions") Has anybody run into this before? I've added two custom taxonomies, and the count ...
2
votes
1answer
551 views

Corrupt Wordpress Database

The weirdest Wordpress problem ever I think. A clients site with a large database of posts has got a mind of it's own. One minute everything seems fine, the next posts, categories and tags are missing....
2
votes
1answer
200 views

Taking WordPress table prefixes into account

Given the code below how would I account for the table prefix that can change from installation to installation? Is there a better way to write it than an SQL query? Is there a variable I've missed ...
1
vote
1answer
368 views

custom user tables supported in SharDB plugin?

I'm trying out the SharDB plugin, but it doesn't seem to be respecting my CUSTOM_USER_TABLE and CUSTOM_USER_META_TABLE declarations -- it is querying $shardb_prefix.users instead of my custom table ...
6
votes
3answers
4k views

WordPress sharding: which multi-DB plugin to use?

I've got a WordPress multisite installation that's hosting enough blogs I need to shard the database. I see there are three plugins available to spread WordPress across multiple databases: http://...
2
votes
2answers
324 views

Is a direct or import approach safer for migration into WordPress?

We're in the process of migrating a site from an existing CMS system into WordPress. The existing CMS system has no direct integration tools with WordPress. I'm looking into the option of creating ...
1
vote
1answer
179 views

Routine to convert custom post meta from old to new value

I have two custom post meta objects that have been applied to all pages and posts in my sites. The names are MyCustomHeader and MyCustomTitle and I have one of these assigned to each post and page in ...
1
vote
1answer
103 views

WP Northwind for Theme Development?

Is there any tool online that can quickly populate a WordPress3 database with faux information to assist in theme development? Perhaps creating 8 categories, inserting a dozen or so posts into each, ...
25
votes
4answers
10k views

Database synchronization between dev/staging and production

I have a problem with WP database synchronization between development and production and I am wondering how other people solving it. I am aware about this question but it doesn't really cover the ...
4
votes
6answers
468 views

How can I migrate from another platform to WordPress (using the same domain) and launch when ready?

Currently, I have a blog that runs atop Tumblr, which is relatively young (3 months old or so, maybe 25 posts altogehter) that I want to migrate to a self-hosted Wordpress installation. I've installed ...
48
votes
6answers
48k views

Using wpdb to connect to a separate database

I want to connect wpdb to another database. How do I create the instance and pass it the database name/username/password? Thanks
2
votes
1answer
324 views

What Is The Difference Between suppress_errors() And hide_errors() in $wpdb?

What is the difference between the suppress_errors() function and the hide_errors() functionin wpdb class? What is the use of each function?
4
votes
3answers
303 views

Is it possible to switch the data layer within WordPress?

WordPress is undoubtely very customizable using plugins, but every customization possibility surely has limits defined by the underlying architecture. For those familiar with WP architecture and ...
6
votes
6answers
589 views

Backup the Database and Restore from the Backup?

I am using WordPress 3 and would like to backup the database to my computer (a Mac). My webhost is using PHP safe mode, so that sometimes limits what plugins I can use. What is a good way to do a ...
8
votes
4answers
2k views

How can I delete orphan keys in WordPress database tables?

In particular in table wp_options. After almost 2 years of blog production it seems increased a lot, and I don't know how many crap is in there. Do you know a plugin that works with WordPress 3.0 or ...