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

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183 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. ...
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1answer
3k views

SQL query to select posts from multiple categories

I have built a query to select posts within a category. Works fine. But when I choose to add a secondary filter to exclude a category, the query return the same result set, as if the secondary ...
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0answers
19 views

mysql_real_escape_string() vs. esc_sql() in WordPress

Does mysql_real_escape_string() and esc_sql() in WordPress both do the same work? I tried following the following: $fetch_row='<p>And again for single posts</p>' echo ...
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0answers
29 views

How to use update and delete query in wordpress

First i write manually update, delete, insert and select query and execute data with mysql_query function Like this: Select query $prefix = $wpdb->prefix; $postSql = "SELECT DISTINCT post_id ...
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0answers
46 views

Set Display Name to first and last name (phpmyadmin SQL Query)

I'm trying to change all the users Display Names to be their first and last name. I have looked into a number of plugins and wrote my own PHP to try and accomplish this however the site has over ...
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1answer
106 views

MySQL 5.5 upgrade 'broke' Wordpress [closed]

I upgraded from Debian 6 to 7 and during the upgrade, MySQL asked for new root password, I was little confused but typed it anyways. I guess this created a new database called 'mysql', because now ...
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1answer
126 views

How to search for posts IN OR title OR content OR author?

I have looked at many posts and questions regarding searches for custom meta, but I want to search for posts and include those if the search query matches an author name. I have come up with the ...
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1answer
68 views

How to prevent/delay MySQL connections when an object cache is used?

We are using an object cache backed by memcached, however I think that WordPress will still connect to MySQL on every page load, which shouldn't be needed if all queries can be handled by the object ...
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1answer
38 views

Obtaining user table for one site on multisite set up

I'm trying to select only users that are registered for a specific site on my multisite set up and see that the table for the users has collected everyone that is on the network. Is there away I can ...
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0answers
29 views

Problems accesing my site [closed]

I was building a new site with WP, but when I checked it with various servers on http://www.host-tracker.com/InstantCheck, most of the request are returning with a 503 error. In addition my memory ...
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0answers
109 views

Slow wp-admin due to “SELECT DISTINCT post_mime_type FROM wp_posts WHERE post_type = 'attachment'”

The media library on a large site is slow in wp-admin. I did some research by looking into slow queries in the sql and found that this query is causing the slow response: SELECT DISTINCT ...
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0answers
22 views

How to migrate the posts from an old custom legacy blog to a new WordPress website?

I have to migrate the posts of a very old custom legacy blog made in ASP (the posts are stored in a MySql table) into a new WordPress blog. So I need your help to find the smartest solution to do it, ...
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1answer
186 views

No wp-config.php file on local install of wordpress - site still displays

I've installed Wordpress locally using XAMPP and this step by step guide by Sunny Johal(Fifth post down on that page). The first time I used the step by step and ran all 3 of the SQL codes(UPDATE ...
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0answers
195 views

Slow meta_query with about 4 milion record on wp_postmeta

Although optimized wordpress all the way but still very slow as follows : I have converted from LONGTEXT meta_value field to TEXT Then create INDEX for this field ALTER TABLE wp_postmeta ADD INDEX ...
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0answers
97 views

Delete duplicate rows from wordpress database where a column is duplicate in phpmyadmin

I have a wordpress table like so (phpmyadmin and MySQL) | id | meta_key | meta_value | +----+-----------+------------+ | 1 | import_id | abc | | 2 | import_id | abc | | 3 | ...
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1answer
302 views

How to count post meta key values for all posts in database

In my post meta data I have the following 'key' for every post: "image_details" a typical value of which is an array such as: ...
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1answer
126 views

$wpdb->wp_users returning empty value for

I have a code Example: function custom_func(){ global $wpdb; $wpdb->flush(); //tried with and without this line $getTest = 'SELECT * FROM $wpdb->wp_users LIMIT 1'; ...
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0answers
197 views

MySql Query very slow

I have a problem with a query on my website. When I load the page it is incredibly slow and only after over 12 seconds the content starts showing. I have installed a debug plugin and found the query ...
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0answers
73 views

Calculate average crossing post categories

In my WP database I have some posts i the category hotels and some other posts in the category visits. In the posts (placed in the category visits) there is two meta_fields ( rating and placeid ) ...
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199 views

Renaming admin user on multisite install by MySQL

As part of a general tightening of security, I want to change the name of the admin user on my multisite install to something less commonly used. This user is admin on all five sites in the network ...
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1answer
174 views

Query Wordpress database by registered date and role

I would like to get the display name and email address for all users who have registered to my multisite today with the role of subscriber. It needs to be an SQL query as it's used outside of the WP ...
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1answer
767 views

wpdb prepare syntax

$arr = []; array_push( $arr, 'wp_table', 1, '2013-12-24', 3, 'NULL'); $sql_prepare = "INSERT INTO %s (id, datea, one, two) VALUES (%d, %s, %d, %s) ON DUPLICATE KEY UPDATE one = VALUES(one), two = ...
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245 views

How to track a users progress through pages by inserting data into Wordpress Database?

My website users can learn British Sign Language through Video Tuts, Quizzes and games etc. I would like to track the users progress through the pages of the course and add that data to a Wordpress ...
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1answer
532 views

Large Woocommerce Site (83,000 items), What Can I Do? [closed]

So I have a really large woocommerce site (partsboss.co) that has around 83,000 items. It's on VPS hosting with digitalocean, and things were running super fast until around 50,000 items. Now the ...
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1answer
173 views

Separate DB by yearly archive of Wordpress

I have large DB of blog post I already export it by year and wanted to make archive by year doing it on subdomain, like 2012.mysite.com I stack looking for solution on internet, I wondering if their ...
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0answers
552 views

$wpdb->insert() does not Insert record in a table

I'm trying to understand and get hold of the $wpdb global object but can't seem to make it work. Basically, I'm trying to insert a single record into a custom table in wordpress DB. Instead of ...
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0answers
274 views

Wordpress running SQL query to update database from form

Basically I want to take information in from a form and use a separate php page to update the database. so here is the original wordpress php page (add_person.php): <?php /* Template Name: ...
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1answer
394 views

MySQL select query with ajax

I am passing variable with ajax to list.php in my twentytwelve template. In list.php I am executing mysql select query but when I see in console I am getting this error: <br /> <b>Fatal ...
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0answers
360 views

Cleaning up bloated wp_postmeta table by removing multiple _thumbnail_id's?

On a very old site (7 yrs) with a lot of posts (30k) I've been trying to whittle down the database tables. The postmeta table is 1.5m rows, 750k of those rows are for a meta_key named ...
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1answer
190 views

Searching With Apostrophe

I'm having trouble with my custom theme's search function. I have a number of posts with apostrophes in the title. For example, McDonald's. However, when I try searching say McDonalds, the post won't ...
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0answers
2k views

How to fix database error duplicate entry

At first I thought this was just a damaged table, so I tried repairing via MySQL, but it appears there's more fundamental issues. Which of the duplicates should I remove, and any further advice in ...
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2answers
147 views

wp_insert_post sometimes fails after API call

I have built a plugin that fires an Ajax call to connect to a third-party API. That API returns some Json, which I then save as a custom post with wp_insert_post. Now, usually, this works. But, now ...
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1answer
142 views

Set up Network Locally on a Flash Drive

I've previously used WAMP for developing WordPress themes locally using a WordPress Network using sub domains. Having to set it all up again every time I want to develop on a new computer is a pain, ...
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0answers
121 views

WordPress plugin overloading with tmp tables

I have asked at the plugin's (WordPress Popular Posts) support a few days ago, since no response hope to get some insight or help here. Thanks. Hesitant to tweak settings like max_heap_table_size ...
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3answers
159 views

Replacing link URL ending strings via MySQL

We are about to purchase a site that uses Amazon affiliate links. Naturally, they have their own affiliate ID, Amazon affiliate links look like this: ...
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1answer
376 views

How to optimize 'select found_rows()' query? Several 'high load average' alerts daily

I have 5,000 regular posts, 6,000 posts in one post type and 2,000 posts in another post type. Needless to say, that has made the wp_posts table quite large. Not to mention, I have custom taxonomies ...
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1answer
248 views

Migrating from PDO using SQLite to clean new install using MySQL

I've been using PDO plugin for wordpress and SQLite database. It does not work as expected so I want to use MySQL database, but without PDO for Wordpress since I cannot trust that plugin anymore, It ...
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3answers
3k views

Is It Possible to Restore Accidentally Deleted Widgets?

I accidentally deleted the widgets without dragging it to the inactive widgets section. I have a backup of all the files and the database but i have changed many things on the site other than the ...
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0answers
321 views

WordPress Query wp-terms SLOW

I've got a very large database in WordPress with lots of products in WooCommerce along with quite a bit of taxonomies. When querying the products on the front end it takes 1 minute or more. Here is ...
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1answer
127 views

Custom order for Mysql array

I have a Page of Posts, each post has a Custom Field "expired" which contains a date in the format YYYY-MM-DD which is used to order the posts. This date is used for a script that tells the visitor if ...
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0answers
81 views

Regex to turn embedded images in to attachments

I've got a blog that has all images embedded in each post rather than a thumbnail linking to an attachment page which is what I'd like. I understand from this question that no plugin (like Regenerate ...
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0answers
203 views

Retrieve/get current image from Nextgen gallery db [closed]

I thought that I can do it using the database where the idea was to get the image from the ngg_gallery_pictures table, where the browser URL is equal to URL of the image in the table. Then I will get ...
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0answers
210 views

Query most popular terms by taxonomy over 2 week period

I have written SQL for a query that pulls the most used taxonomy terms for selected taxonomies that are published, do not have a parent post are not in a comma separated list over the past two weeks ...
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0answers
263 views

List authors with the last post title and order by last post date

I want to list authors with last post data and order them by last post date. Now i have this codes but i don`t know how to edit them. // Selects from tables wp_users and wp_posts, selecting published ...
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0answers
58 views

How can I make wordpress suppress mysql errors?

Wordpress has two functions related to SQL queries and their errors as mentioned in What Is The Difference Between suppress_errors() And hide_errors() in $wpdb? From what I've read setting WP_DEBUG ...
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1answer
314 views

How do I write this SQL statement for Posts written in last 24 hours?

Someone gave me this SQL code to count the number of posts (of post_type 'mixtapes') in the last 7 days. I tried to convert it to 'in the last 24 hours' as well, but it's giving the wrong number. ...
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1answer
741 views

Paypal Post IPN handeling nightmare

I'm trying to integrate paypal standard with my Wordpress site and all was going well until I wanted to do one simple thing: The user submits a paypal payment Paypal posts the IPN to my server Post ...
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4answers
470 views

Migration: Copying database content to a different server

I'm migrating our WordPress site from one server to another. I need some hint on how to deploy a database dump (which I have) from the original server to the new one. There is no phpmyadmin (at least ...
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0answers
299 views

WPDB is not working when trying to run a custom query [closed]

I'm developing a WordPress plugin, and have no other plugins installed. The logging function is as simple as function log($message){ global $wpdb; $message = $wpdb->escape($message); ...
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1answer
351 views

Wordpress Post # of # filtered by category slug

I want to show post #4/100 at the top for each post for which I'm using following code function updateNumbers() { /* numbering the published posts: preparation: create an array with the ID in ...