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

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417 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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111 views

Unable to install WordPress on Plesk 11 Windows based machine

I am trying to install WordPress on a Windows server. The install was not able to create wp-config.php itself, so I created it and put in the database values. Now I get errors like this table doesn't ...
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1answer
22 views

optimise SQL wordpress call

I have this code : $querystr = " SELECT * FROM {$wpdb->prefix}posts INNER JOIN {$wpdb->prefix}postmeta m1 ON ( {$wpdb->prefix}posts.ID = m1.post_id ) INNER JOIN {$wpdb->prefix}postmeta ...
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1answer
110 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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276 views

SQL Query to select post thumbnail, post title, post content from a category

I use the db of my wordpress blog to develop a mobile application in Java. For this, I need the SQL query to display the thumbnail of a post, the title and the content in a selected category. I think ...
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1answer
120 views

XML RPC post produces immediate revision with odd post_date_gmt

I am sending a post to Wordpress 3.8 with XML RPC. Here is the raw XML being sent to wordpress: <?xml version="1.0" encoding="UTF-8"?> <methodCall> ...
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1answer
309 views

Slow wp_term_relationships query

I'm running a large WP instance (currently has 28,000+ posts in custom types) and have been experiencing some odd slowdowns. Upon analyzing the MySQL slow query log, one of the problem queries is: ...
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26 views

After importing data to new DB with new name, receiving a constant MySQL warning

I've just spent several hours trying to understand why a WP install is really slow, I tracked it down to the database and realised everything in the db was just running super slow with the debug bar ...
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1answer
57 views

Size article thumbnails and retrieve them directly from database

I've integrated the Wordpress database directly with my .NET application. What I want is to set the featured image of a post. This featured image must be maximum 800pixels wide, and automatically ...
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1answer
37 views

Convert Custom Taxonomy Posts to Normal Posts

Previously I was using a custom taxonomy based theme, Flavour. However after some successfull years with that theme, I tried with a different theme. However in the new theme, I am unable to see or ...
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89 views

Self-added mysql column as custom fields value

I am trying to add a value from a column that I've added myself to the wp_posts table as a custom field. So right now there is a column called 'shares' which holds an int value and I want that int ...
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1answer
583 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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491 views

How to return count of custom post type posts with a specific custom field value via $wpdb?

I am trying to get count of a custom post type with a specific custom field value from wpdb without doing a WP_Query or get_posts since I think it is more resource efficient and I need to return 10 ...
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56 views

Why does my WordPress front-end categories plugin gives me a database error with my SQL syntax?

A few years back I created a plugin based off of an answer here: How do I create a way for users to assign categories to a post from the frontend? Here's a pastebin of the modified plugin: ...
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3answers
2k views

Convert wordpress posts to products in Woocommerce

Is there anyway I could convert all the posts e have right now on our Worpdress install into products using some mysql query or something like that?
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1answer
556 views

Create an user on external database

I have wordpress site and a project management system from codecanyon. Here is the link I have disabled registration for users in project managment system, only login is enabled. I need to make users ...
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1answer
228 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 ...
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146 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
188 views

SQL Query to Get list of all users along with their blogs

How to query for a list of users along with the blogs in which they are member of in a multi site wordpress installation. For example, I need the results as below user domain abc xyz.com abc ...
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2answers
114 views

Get post by ASC from custome field DATE picker

i want to custome post by ASC. i have some add some post in bachend one of the field date picker. i want to post by date which i set in date picker field <?php $args = array( ...
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85 views

MYSQL Join on meta key value?

I have very basic mysql knowledge (able to update and join tables) and am using phpMYAdmin but I am trying something just beyond my level now. I have looked at many other questions and answers but ...
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2answers
46 views

Help setting up a sql query

I need to list out specific custom field items that contain an associated custom field entry. For example, the custom fields are named "type" and "food". I would like to list out all of the breakfast ...
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1answer
19 views

add_blog_option blog ID

In multisite I run add_blog_option and look at the row in mysql wp_options. The record is there but I do not see a field for the blogID. How does the wp_options relate to the specific blog?
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1answer
849 views

How to import database table as custom post type and custom fields?

I have a sql table that contains vehicle information. When I import the database table to my WordPress website, I need the information to be imported as custom fields for a custom post type. For ...
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1answer
46 views

Wordpress not reflecting changed of the database

my problems started when I moved my website to another folder (from /dev/ to /). I have gone through the whole database in order to change all the hardcoded /dev/ into / but I still notice that ...
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1answer
58 views

Restore Cforms II Form Presets

I have a client who had to reactivate the cforms II contact forms plugin. It refused and gave the following error: *Fatal error*: Cannot use string offset as an array in ...
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129 views

Why are my WordPress post queries so slow?

I'm working on a larger WordPress site and trying to troubleshoot why my site is so slow. I've installed W3 Total Cache and have run multiple page speed and plugin tests with no luck. What's strange ...
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1answer
728 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?
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1answer
280 views

Unique Post Meta Values

I want to use Unique IDs like YouTube video IDs and WordPress post IDs in a custom field 'youtube_id'. I just created a front-end add post page and want to check if 'youtube_id' used or not used in a ...
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99 views

Display image in descending order from database table

I have used woo commerce plugin ,I am trying to display images in descending order by order_id in word press dashboard on orders tab.I tried lot's but not getting any idea how to do that.Bellow is my ...
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2answers
49 views

Let users register weight each day and save it in DB

I need a way that lets my users register they're weight (kg) and maybe % of bodyfat and save that information on each user in the DB. Then i need a way to output that number again on the logged in ...
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1answer
73 views

Get data from 3rd table

I have 3 tables: wp_posts wp_metadata users When I get my query from wp_posts I'm using LEFT JOIN to get the data from the wp_metadata, but how can I get a value from the 3rd table users? ...
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1answer
58 views

How to stop $wpdb from prepending database name

When I run an UPDATE query using $wpdb, WP prepends the database name associated with the WP installation to whatever is passed in the table name argument. This isn't desirable as my app passes the ...
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1answer
392 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
50 views

SQL database export-import

I develop websites containing WordPress blogs as well as other PHP pages I design. When I make changes to sites locally on my test server I do a SQL database dump using myPHPAdmin. How can I avoid ...
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20 views

Display Title by tags ( mysql )

I want to display in a sepparated page all the titles ( with link ) and a short description ( first 30-40 words from an article ) by a specific tag. For example, i use a "SPECIFIC TAG" on all my ...
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1answer
325 views

Insert two row in wordpress database

Hello I am working on a template where I have to grab some value and insert them in my own created table in wordpress database. Now as I dont know how to insert record in wordpress database , so i am ...
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96 views

why is $wpdb->update() causing a DB error from within wp_set_password()

I have a page-template for my custom theme that enables the user to reset their password from the front-end. I'm calling wp_set_password() and everything runs but the password is not changed in the ...
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1answer
667 views

WordPress database error You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version [closed]

after wordpress update to 3.5+ i get error in this plugin. I do not understand how to fix it. If anyone can help me with these problem or give me an example of how to fix it here is the full code of ...
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1answer
125 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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248 views

Custom Post Type or Custom Tables?

I am trying to build an application that takes 2 pieces of input from a user and saves it to the database. This is how users enter these two pieces of input; this form will be displayed using ...
0
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1answer
246 views

after wordpress update to 3.5+ i get many errors in plugin wpdb::prepare()

after wordpress update to 3.5+ i get many errors in this plugin. i found that the reason is: http://make.wordpress.org/core/2012/12/12/php-warning-missing-argument-2-for-wpdb-prepare/ I do not ...
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1answer
105 views

MySql Query for Wordpress

I need to count the number of value 1 from wp_ul_locked on wp_usermeta i try this code $wpdb->get_var("SELECT COUNT(*) WHERE 'meta_key' LIKE 'wp_ul_locked'"); or $wpdb->get_var("SELECT ...
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1answer
1k views

Select User by Joining Multiple Meta Value Results

( I would ask this in the general stack exchange forum but I think it is more relevant here. I'm intentionally using direct queries to the database here. ) I'm trying to select a group of users that ...
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423 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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66 views

Delete junk text from all the post using my sql command

Because of an autoblog plugin, my site has got junk text in every post! The text format is as below .. funny-pictures/funny-pictures-of-the-day-30-pics/attachment/funny-pictures-41-2/" ...
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1answer
64 views

Internal error (500) on local & Fatal error on live when trying to access post type edit screen

I'm building a CMS for a company that has 60,000+ static pages which have been converted into posts. 30,000 of these are a particular post type. When I try to access the edit screen in the admin area ...
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1answer
329 views

How to permanently delete a taxonomy

I want to delete a taxonomy (both form wordpress and database) created long time ago and now no more used. How to do it? I found this function but I think it will delete all my taxonomies... and I ...
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1answer
75 views

Copy url from post_content to custom field

I'm new to MySQL so I don't know if this is even possible. I would like to copy a url that's in post_content to a custom field. The url is variable and it looks like this: ...
2
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1answer
167 views

Ordering Post 2 Post admin meta box by meta from CPT

I've just started using Posts 2 Posts (brilliant plugin by the way) in combination with a custom post type called "Artist" and the WP Event Manager Plugin. My aim is to use P2P to link Artists to ...