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

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3answers
446 views

Insert all post IDs in new database table

I have a plugin which creates a new database table. Upon activating the plugin is there a way to insert all my posts ids into that table? Right now I'm using an action hook to immediately insert the ...
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3answers
484 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 ...
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1answer
795 views

Wordpress 3 - how are passwords stored and how do I compare to them?

For reasons I can't go into right now, I'm creating a form that will allow users to change their passwords for Wordpress by entering their current password and then entering the new password. I want ...
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3answers
98 views

Styling images coming from another blog

I had asked a question earlier, on getting post-thumbnails from another WP-site. There, the awesome Mike coded a SQL query whose results are then passes on to a PHP array. The piece of code from that ...
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2answers
1k views

what to do when your WordPress database is too large?

Well I have asked this question in WP Forums, StackOverflow, and GoDaddy community as well, but nothing worked out. Hoping something is in here. I used 2 separated subdomains for my blog and site ...
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2answers
9k 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 ...
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1answer
684 views

Universal problem: first request after ~25 second inactivity always slower (~1 second) than subsequent requests (~1/10sec)

It's something I noticed ever since I started working with WordPress. It's a universal issue, in the sense that it doesn't matter if the WP installation is on my shared hosting account (haven't tried ...
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3answers
386 views

Delete post revisions on post publish

Is it possible to delete post/page revisions from the database when a post/page is published? 11/05/12 Answer: See the plugin below by bueltge I want to do this on a site with 5,000 posts and ...
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5answers
7k views

Will it break my site if I delete all transient records in wp_options table?

My site currently has an outrageous 500k+ transient records in the wp_options table. This causes the table to be crashed frequently and so be my site. I thought transient records will all expired ...
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2answers
7k 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 ...
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2answers
774 views

How to create another version of my site based on the same database

I have created a site and would like to create another version of the same site using the same exact database (db location, users, everything). The two sites would share one database. I already have ...
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2answers
246 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. ...
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1answer
867 views

the_author_meta not working

I'm trying to use the_author_meta to retrieve some links which users can set in their profile. I set up extra profile fields and they are saving to the database. On my author.php I have the ...
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2answers
530 views

Mysql query LIKE not working

I'm using this code. $blog_list = $wpdb->get_results( "SELECT " . $extra . "blog_id, last_updated FROM " . $wpdb->blogs. " WHERE public = '1' AND archived = '0' AND mature = '0' AND spam = '0' ...
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3answers
1k views

MySQL query to set wp_postmeta using term_taxonomy_id value

I have a need to set the wp_postmeta value (in table: wp_postmeta) on every post that has a specific term_taxonomy_id (in table: wp_term_relationships): Specifically: run a query against every ...
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1answer
398 views

Rewrite database urls

Is there a query I can run on my wordpress database so that I can change all instances of www.mydomain.com to localhost/mylocalsite.com?
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2answers
102 views

Select Multiple meta_value from WP DB; Single Query

I am trying to retrieve each user's first and last name, phone, email, and address from the usermeta table. I'm having trouble selecting multiple meta_values, each with its own meta_key, using a ...
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1answer
177 views

HTML Entities in Post Title

I'm inserting posts into wordpress using a script which is loaded through CRON. Before inserting each post I am checking whether the post with the same title exists or not. Below is the snippet I'm ...
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1answer
684 views

Large database causes slow load

I have a 2GB WordPress database (using InnoDB Storage Engine) and I noticed my site loads slow when I press the publish button right after I selected a featured image in the media library. I had a ...
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2answers
409 views

How to create and work with custom data / tables (i.e., for arbitrary data)?

Getting started on Wordpress just today. I noticed that Wordpress created tables in a mySql database (with name *.wrdp1) when I first set it up. These tables cover comments, posts, users, and some ...
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1answer
798 views

Within the database, where is the flag which says that a user has Super Admin rights?

I have an user in a Wordpress Multisite installation and have access to the Mysql database, I would like to give myself super-admin rights to access the wp-admin/network page. Where can I do it on ...
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1answer
596 views

Is it possible to split database tables using HyperDB?

I'm looking for an answer from someone who's implemented HyperDB or has knowledge of it. I have a database which has just passed the 100mb mark a week or so ago, the problem is my host only allows ...
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1answer
420 views

Disallow categories from this MySQL query

I'm trying to modify a plugin that generates an archive listing so it shows only one category, making it a single category archive. The old version of the plugin used a get_posts query, and so it was ...
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3answers
335 views

Performance on WPMS

my WPMS site is hosted on 8 cores/32mb RAM server but the response time is very high. We have about 1000 blogs (35,000+ tables on single db) and 70,000 pageviews per mounth. I think that i can down ...
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3answers
1k views

importing users where password is provided as md5 + much metadata

I have a spreadsheet that was provided to me of users to import to a new site I have built. I was provided with the password in MD5 hash form. I suspect if I insert this into the password field in ...
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1answer
204 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 ( ...
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1answer
693 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 ...
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2answers
23 views

wpdb custom post_type problem

I want to use custom post type in my custom SQL query, but, when I add the custom post type im my query, I get no results. Where's my probelm ? This is the code I've tried $top5_ov_performance = ...
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1answer
227 views

MySQL LIKE not working

It seems MySQL's LIKE operator behaves like a = operator. The following MySQL query returns the expected result (1 entry): $meta_key = '_locality'; $meta_value = 'The Hague'; $post_ids = ...
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1answer
154 views

Wordpress database error - Error in SQL syntax - I can't identify any error?

I am trying to write function that checks whether an email address is stored in my database or not. I've written the following PHP code:: function check_my_users( $email_address ) { global ...
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1answer
28 views

Why doesn't this code add a table to my database?

To get to the point, I'm trying to add a database table upon installation of my plugin. Here's my code: global $scimp_db_version; $scimp_db_version = "1.0"; function scimp_install () { global ...
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1answer
140 views

How to determine what is generating large amount of database queries?

For some reason, my Wordpress site is using a lot of memory (spiking at 72MB) and generating a huge amount of database queries (76923 according to Wp-Memory-Usage. I'm really not sure why this would ...
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1answer
522 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( ...
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1answer
30 views

For best DB performance should I serialize all theme options together or by type?

If my theme has a lot of options is it better to store all options in one database entry, or to use a databse entry for each group of options? IE would I name all options like this ...
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1answer
145 views

How to adjust code to refresh a dropdown box with tags that are active on filtered category listing

I have multiple custom tags setup (ptags) and custom posttypes (products) and made it so i can filters posts by multiple tags in a category. Currently the code retrieves tags from posts relating to ...
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2answers
464 views

$wpdb: Counting posts corresponding to 3 terms in 3 different taxonomies

It's easier if I made an example: I have a custom post type MYPOSTTYPE, with 3 taxonomies TAX_1, TAX_2 and TAX_3 If I have 3 terms: 'TERM_TAX_1' in TAX_1, 'TERM_TAX_2' in TAX_2, and 'TERM_TAX_3' in ...
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2answers
1k views

Increment value (value = value+1) of $wpdb->update

This sql query $wpdb->query("UPDATE log SET total=total+1 WHERE id='1')"); How do I turn it into $wpdb->update() statement? Ex. $wpdb->update('log', array('total'=>'total+1'), ...
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2answers
326 views

Join new table with SQL query

I created a plugin with a new table (wp_soundcloud) and I need to retrieve the data from that new table along with the post data. Here is my query: $querystr = " SELECT $wpdb->posts.*, ...
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2answers
313 views

Distinction on meta value on pre_get_posts

I've got a special "position" meta field for posts which can be between 0 and 37. 0 Is ignored, and everything else can have obviously any number between and including 1 and 37. But this of course ...
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1answer
2k views

tag search using WP_Query

I need to find only posts with a tag forest gump. I've tried: new WP_Query('tag=forest+gump');, new WP_Query('tag=forest gump');. However they both return ALL the posts and not only the posts with ...
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3answers
732 views

WordPress Custom Query

I have posts that use a custom field for start date and end date. query_posts returns an array of posts that exist in the category I'm filtering. How do I query posts using this custom field that has ...
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1answer
1k 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 ...
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1answer
1k views

Tags to Post-ID mysql query. Tag Search

Im trying to implement a tag-based search. When i specify certain tags, tagged posts will be searched and the post-id will be displayed that matches the searchcriteria. Currently it only works for a ...
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1answer
373 views

MySql database help for a plugin

I am using a WordPress plugin called MyReview but I want some changes to it. That plugin has feature to review posts, where users will come and give star ratings to the post according to categories, ...
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1answer
439 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 ...
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1answer
23 views

Moving test theme to live site without mySQL error - how? [closed]

I have installed a wordpress theme on a hidden test site and made some css/design changes. How would I move this to my live site? Sadly I screwed up some of the PHP/MySQL stuff when trying to copy ...
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2answers
90 views

Add “Category” to Mysql Query

i need your help :) I've made this custom Mysql query on WordPress: $querystr = " SELECT DISTINCT meta_value FROM $wpdb->postmeta WHERE post_id IN( SELECT DISTINCT ...
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1answer
150 views

wpdb insert and boolean fields

I'm preparing an insert query like this: $wpdb->insert('table', $data, $format); data array will be: $data = array_push($data, 'resp' => true) problem is, what $format shall i use for a ...
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2answers
106 views

Single meta_query query using OR instead of AND in request's WHERE statement

I want the native WordPress search input to search metadata in addition to its standard title and content search, however setting a meta_query adds an AND clause to the request when what I need is an ...
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1answer
35 views

How to find meta entries with their posts missing via SQL?

I'm looking to write an SQL query to do the following: Select all postmeta rows where the meta_value = a post id that does not exist. For example, postmeta meta_value may equal 235. Usually this ...