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

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Migrating from Existing MySQL Setup to WordPress

I currently have a database with the following schema: Table: Articles Columns: ID, Title, Author, Content Table: Authors Columns: ID, AuthorName, EmailAddress Table: Categories Columns: ID, ...
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116 views

SQL Query in WordPress - Getting Impossible WHERE error

I don't get any result in the SQL query below. I am trying to find user_id of users with custom usermeta fields. SELECT DISTINCT user_id FROM wp_usermeta WHERE ( ( ...
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512 views

SQL Statement - Mass Delete Custom Post Types

This website lists a nice way of deleting posts based on category http://www.tripwiremagazine.com/2010/06/how-to-effectively-bulk-delete-many-posts-in-wordpress.html The relevant code is: delete ...
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1answer
124 views

Location of core code for database connection and get_header

I understand WP well enough to create a custom theme at a basic level, but have no experience with the core code. I've also just finished a book on basic php and mysql coding. I'd like to look 'under ...
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1answer
132 views

Group posts by meta_key

I have a Problem with grouping meta_values. The Query looks for posts with the meta key "company". I want a unique listing of the colors like: blue red yellow array_unique was not successful and also ...
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1answer
425 views

SQL query to update post_date (one post = one single date & time)

I have 120 posts of one category ready for my wordpress blog. For the moment, posts are drafts and I don't want to schedule them manually. I want to publish them like this: 4 articles each day from ...
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2answers
137 views

Copyright: Get first and last date of post type

I was searching for the easiest/fastest way to get the accurate date range for copyright notices in the footer. The copyright notice shouldn't only contain the year, but as well take month and day ...
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2answers
205 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 ...
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0answers
48 views

how to prevent words inside image tags from being update in a sql query via php

I need to update certain words inside wp_posts table (1032 posts in a specific time range) but I would like to exclude some words when they are inside tags like so: <img ...
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1answer
279 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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210 views

Importing Concrete5 content to WordPress

Are there any tools out there to convert content from a Concrete5 database to something WordPress can use? I have a client that may switch over, and would like to avoid manually copying content over ...
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2answers
221 views

update image path with words starting uppercase to lowercase chars

I have to convert the image path to lowercase characters inside wp_posts table. Right now, I have inside my posts this: <img class="alignleft" title="my image title" alt="my image alt" ...
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2answers
104 views

Update a Wordpress post or page takes 60+ seconds

Since updating to Wordpress 3.5 I've had my updates of pages and posts become excessively slow. I've been timing them and they take 40-80 seconds to update. I've spent the last 2 hours reading and ...
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1answer
63 views

WordPress Mysql query and Duplicate

i've a problem with mysql query on my wordpress database. I've custom fields Country and City. At moment I have this query that show all the cities of "UK" Country $querystr = " SELECT wposts.* ...
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2answers
108 views

$wpdb is queried but results don't show

I am trying to show a list of custom post types on a page template. When I view the page, instead of seeing the different posts, I see the actual page repeated. For example, If I have 5 posts, the ...
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1answer
69 views

What could cause a WP Option to get truncated?

I have a WP plugin, where all admin setting field values were suddenly changed to the letter 'a'. All settings are stored in one 'big' option in the table. Seemed like the serialization gone wrong. I ...
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1answer
56 views

How can I manage my multiple wordpress websites from main website?

Can this solution be used for multiple WP installations on the same site? For example, I have multiple blogs (multiple subdirectories), i.e. mysite.com/blog1, mysite.com/blog2, mysite.com/blog3, etc. ...
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1answer
305 views

wpdb prepare insert table doesn't work

I followed the introduction to use prepare to insert some data to the table. The code is like this: $wpdb->query( $wpdb->prepare( "INSERT INTO ...
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1answer
48 views

select a single val though a table in wordpress

The table is like this: category_id category_name category_parent_name I would like to get category_id by using category_name. I searched online, and the code is like below: $ad_cat is the ...
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2answers
270 views

Connect another DB and fetch records from some tables

I want to connect with another wp db & then fetch records from new connected db then close that db. I follow How can I connect to another WP database and use WP_Query? but after connect to new db ...
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1answer
82 views

MySQL database migration to WordPress

I have a MySQL database established for a web application I have been working on in a non WordPress database. This database has many tables with pre-populated rows for foreign keys etc. which took a ...
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0answers
304 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
92 views

Ubuntu 12.04, Nginx and MySQL issue with Wordpress Database

Twice I installed a fresh LEMP Ubuntu 12.04 instalation on my server and started to build a wordpress site on my VPS following This tutorial. Now, for the second time, after a while I can't write do ...
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1answer
57 views

Should I use Wordpress to skin a database website?

I am going to start programming a website which allows users to post adverts for aircraft for sale. (Think autotrader for planes). It will be free to use. There are a few websites that do this already ...
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1answer
134 views

php include not working in custom page

The Problem I have a db.php file which contains mysql login details. I want it in a separate file like this so it can be linked in several different pages for easier tracing later. This all works ...
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2answers
521 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? ...
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1answer
119 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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2answers
73 views

How should I troubleshoot a database serialization issue with a WordPress migration

I'm migrating a WordPress site from one server to another, and the entire migration seems fine, except the sidebars aren't moving over properly. The obvious thing that comes to mind is a serialization ...
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747 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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1answer
162 views

Second ezSQL initialization for MSSQL

We are trying to pull data from a second database into Wordpress. The secondary database is used internally to store data, and Wordpress (also only used internal) is partially used to display some of ...
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227 views

Using mysql queries to delete custom post types based on meta_value

I am trying to create a cron job to run on my server which deletes a custom post_type (post_type = event) from my databse based on a meta_key (st_date) and a meta_value (the date the event took place ...
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1answer
664 views

Bad Request (Invalid Hostname) on working server, database problem

I have a local server up using EasyPHP. I know its working because I have a default wordpress install running and up on my brower. I have a full site which I also know I have working because when I ...
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1answer
112 views

little help with a mySQL query to wp database

@t31os gave a very helpful response to: getting all values for a custom field key (cross-post) by providing this function if ( ! function_exists( 'get_meta_values' ) ) { function get_meta_values( ...
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206 views

FIND and REPLACE wp_posts AND IGNORE custom post type mysql query

does exists some MYSQL query for FIND and REPLACE wp_posts AND IGNORE all other wordpress and buddypress posts (buddypress-docs) and also custom post type = portfolio ? I want to find and replace only ...
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1answer
138 views

Migrating database / content of non-CMS site to Wordpress

I have a non-CMS website which is fully build with PHP with a lot of content in it. I don't want to add my posts manually in Wordpress, because that's a pain in the ass (I am talking about 5000 ...
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1answer
102 views

How do I display offsite database info on my wordpress site?

I host some online games from my personal computer which the game saves information to my Mysql database. I would like to display live data (if possible) on my hosted Wordpress site. I know the ...
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1answer
149 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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2answers
116 views

making php value numeric

I used some of this code from this page on Stack Overflow: Using wp_query is it possible to orderby taxonomy? It's about the function to be able to sort a query by a taxonomy value. Although it works ...
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1answer
113 views

Best practice to limit results in get_row()?

This is my query to check if a title exists (it's in a loop, therefore [$i]). $wpdb->get_row("SELECT * FROM wp_posts WHERE post_title = '" . $titles_arr[$i] . "'", 'ARRAY_A'); Anyway, I would ...
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2answers
119 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
196 views

Mysql query and order meta value

I made a mysql query to WordPress like this: $querystr = " SELECT $wpdb->posts.* FROM $wpdb->posts, $wpdb->postmeta WHERE $wpdb->posts.ID = $wpdb->postmeta.post_id AND ...
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1answer
1k views

Custom SQL Query for Wordpress page

I'm quite new to wordpress. I'm trying to build a tableview within a wordpress page. Therfore I need a custom SQL Query to my MySQL Database. Query data from my MySQL Database Get the result somehow ...
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1answer
482 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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2answers
543 views

How to prevent execution of default query, while preserving ability to use WP_Query in template?

PROBLEM: I'am trying to prevent execution of default WordPress query for custom category template. I have found a possible solution, but looks like it preventing execution of all post queries: ...
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1answer
811 views

How can I debug my database connection for unit testing?

I've set up a wordpress environment on my Mac with MAMP and I'm running 3.5.1 locally (i.e. http://localhost:8888/blog works). I'm trying to run the unit test suit from wordpress.org and having ...
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1answer
67 views

Print output of Table Creation

I am creating a few tables and I getting the following message: The plugin generated 440 characters of unexpected output during activation. If you notice “headers already sent” messages, ...
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2answers
530 views

Error establishing database connection - high traffic?

I have a WordPress 3.5.1 site that's getting a little bit of traffic (80 concurrent visitors, ~5 clicks/pageviews per second). The site runs fine until it spikes to ~85 visitors. There are usually 4 ...
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80 views

Wordpress post saves until Apostrophe (’) is used

I've installed wordpress onto a fresh VPS with nginx + php-fpm, the installation works fine apart from whenever I post something with a ’ the post ends there. It's looks to be some sort of escape ...
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0answers
139 views

Custom query on Wordpress custom table

I am working with a custom table where some values will be inserted or updated if they already exists, I have checked and rechecked the syntax and it seems to be working fine, if I run the same query ...
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2answers
329 views

How to copy post titles to post slug in phpmyadmin

I just imported 1000 post into a custom post type on a site and the slugs are all blank. There is a problem with the importing plugin i'm using. My SQL is weak :-/ know what i need to do but not sure ...