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

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952 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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68 views

Wordpress 4.2.1 upgrade mysqld spikes in cpu usage

After upgrading to WP 4.2.1 we have encountered some huge problems with site being unresponsive. We have located this as the problem (we think) # Query_time: 13.341332 Lock_time: 0.000054 ...
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358 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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2answers
399 views

Grouping related postmeta data via SQL query

I am using someone else's WP plugin which stores lots of related data in wp_postmeta using an "artificial key". So effectively we hijack wp_postmeta to create a nested relational database. So one row ...
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1answer
108 views

WordPress and SQL - Update and Insert from another table if column value doesn't exist

Stuck with some mysql for my wordpress site. All within 1 DB. I am attempting to update wp_options table from wp_2_options (Multisite). They both have option_name (unique_key) and option_value ...
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1answer
82 views

live site do not update after importing sql database

My live website is not updating after importing sql database from wamp local server until last time all went perfect but last night I was not able to see the changes live made in local. what I did: ...
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1answer
112 views

Wordpress with php5-fpm and nginx

I am trying to complete an install of wordpress using php5-fpm and nginx, with a database on a remote server. However, wordpress doesn't recognize the existence of mysql to allow me to connect to the ...
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22 views

More efficient remove meta data from posts?

Looking for a better way to do this, bulk remove custom field from all pages with a taxonomy -> people -> term of names. Any thoughts ? This is attached to a single button on a custom admin panel not ...
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3answers
981 views

Site running slow on new server?

I recently uploaded a website to a new 123-reg server on a single WP installation (www.moseleycoachsales.co.uk). I had developed the site on my own hosted multisite environment ...
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117 views

Ajax is running my insert query twice

I am working in WordPress and I run a function to insert a row in database with ajax. Ajax runs but for some reason insert operation is performed twice. Below is my code Ajax jQuery(function ($) { ...
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1answer
74 views

Add value to array in database

I have a custom database in my WordPress site where I want to save multiple values to one row. Let's say I have an entry: id: auto increment pageid: id of current page time: text (is an array ...
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1answer
39 views

Are database queries created using WordPress filters protected from SQL injection?

I'm using the WordPress 'posts_where' filter (https://codex.wordpress.org/Plugin_API/Filter_Reference/posts_where) to alter my queries as below: function filter_my_search($where=''){ ...
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1answer
36 views

Stop my loop to register data twice

I am facing a problem here. The code below is running on my site and when i fill in the form and check my database the data has been registered twice. Please the the following php code from my ...
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1answer
40 views

Function returning queried meta value based on current post ID

I have written several queries which sums download counts grouped by the post they are associated with, and other relations. They work great for exporting to CSV and other uses outside of WordPress, ...
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2answers
125 views

Wordpress SQL injection

How to make below code safe from sql injection ... I am working in wordpress. global $wpdb; if($wpdb->insert( 'votes', array( 'votes' => ...
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1answer
138 views

Get updated query results on page after insert in database

I am working in wordpress. You will see two queries one is select and the other is insert query. I want that after my insert query is run i get updated results on my page. The select query has a form ...
0
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1answer
80 views

Connect to MySQL using Windows Authentication

Is it possible to have Wordpress/PHP connect to my MySQL database using Windows Authentication on IIS? I can connect just fine using the normal MySQL command line utilities. I get the following error ...
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1answer
403 views

Get the id of the row from database on click of a button [closed]

I am using wordpress and I am fetching images from the mysql database with below code. And I display the image and there is a button just with every image and what I want is that when that button is ...
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1answer
149 views

Can I run multiple queries with $wpdb->prepare?

I have a query(actually multiple queries) that runs perfectly in phpmyadmin, (I've also tried get_var in place of get_results, but I think I might need an alternative to $wpdb->prepare. How can I ...
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50 views

MySQL: get post_tag items that are tags (not SEO keywords)

I need to extract the post tags from a Wordpress database using MySQL. My current take is this: SELECT * FROM wp_terms AS t INNER JOIN wp_term_taxonomy AS tt ON tt.term_id = t.term_id ...
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2answers
3k views

How to get a Google maps SQL->XML->map marker tutorial to work in WordPress

I have been trying to figure out what is wrong with my code for a couple days now, and I can't seem to crack it. I am trying to follow this tutorial I tried all three of the suggested methods to ...
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0answers
34 views

Can connect to db normally but I can't select, Access Denied

I have a problem that happened in my website and I don't know how to fix it some data are disappeared and when I debug I find this error WordPress database error: [Access denied for user ...
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4answers
4k views

query to create woocommerce products from images

I have hundreds of art images in my WP media library, each of which I want to convert into a woocommerce product, and set as featured image of that product. Rather than manually adding new products ...
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23 views

WordPress Query Count

So I've used get_num_queries() and the "debug bar" plugin for a while to monitor the number of queries running against the database. Earlier today I turned on the MySQL query log for an unrelated ...
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1answer
68 views

If meta_key exists then don't select this post?

I'm trying to select all posts EXCEPT ones with a meta_key somekey. SELECT * FROM wp_posts JOIN wp_postmeta ON wp_posts.ID = wp_postmeta.post_id WHERE meta_key != 'somekey' But this is still ...
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114 views

Dynamic data from external database - display in several WP sites

I have looked at similar questions, they don't seem to answer my specific question. I have an external database (not using tables in the WP database). I have several sites that need to pull dynamic ...
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1answer
40 views

WSoD being caused by this piece of code

This is a function I'm writing which is supposed to post an input along with some other information, to a database. As of right now, activating the plugin produces a WSoD, when the function is removed ...
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1answer
48 views

Widgets with *internal* links do not display after database migration

I am using Grunt to dump my local db, search and replace URLs in it (and account for serialization by using grunt-peach based on Peach), send it to my staging server, then import it into my staging ...
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1answer
777 views

Jquery ajax to custom php file: returning blank data

I created a custom php file, put it in my folder. The files does insert some data to the database to a custom table i created. require wp_path() . "/wp-load.php"; global $wpdb; $favorite_table = ...
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25 views

How do I transfer an existing website running on Joomla to Wordpress?

I am currently the Admin of a site that is running on Joomla 2.5 and I am looking to migrate existing content to wordpress. Please help.
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15 views

Querying sanatized data with meta_query in Wordpress

I asked this question over at SO yesterday, but I see now that this is the right place for it to live. After Googeling this for a while, I've found that this should work cite, but I don't seem to get ...
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57 views

Alter wp_post table vs. post_meta performance/speed

I'm searching for the most efficient way to link a post to multiple users. By default each post in wp_post has a post_author column, which is linked to the corresponding user ID in wp_users. Assume ...
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1answer
91 views

Wordpress upload images not displaying

Hello I have a wordpress site and I upload images to media library but the images do not display. In wp-content/upload folder there are other folders like 2015/ and then in that folder there are ...
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1answer
253 views

Why is converting my database to UTF-8 truncating entries?

I'm running WordPress 4.1.1. My site is hosted at NearlyFreeSpeech. I've been using my WordPress blog since the days when it encoded information in the latin1 charset. This week, I realized that ...
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1answer
43 views

Custom redirects with using SQL

We have pages with urls like this: http://example.com/?page_id=3&user_id=5 http://example.com/?page_id=6&user_id=9 etc. page_id and user_id located in table MySQL Database. And this table has the ...
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2answers
482 views

Delete all subscribers from wp_users and wp_usermeta a few thousand at a time

I have a site with 70K spam subscribers, and I don't need any of them. So I need to delete all subscribers from wp_users and each user's associated meta from wp_usermeta using a query in adminer ...
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2answers
324 views

WP-DownloadManager - Query most download per week/month etc

I'm using this plugin (http://wordpress.org/extend/plugins/wp-downloadmanager/) as my download manager. While it's very simplistic and does great for what i need, the statistics to output on the site ...
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1answer
26 views

Converting Posts to Pages

So my site backend had issues and my hosting company had fixed it up for me. In doing that, they inadvertently made all my pages, posts. I'm looking at the database that hosts this and there is a ...
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20 views

Pages edit as posts

I'm currently dealing with the fallout of the following question (How to change post to page). I got all my pages back though all the pages' URLs were changed so there is no hierarchy and when I try ...
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116 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
56 views

SQL error on restoring database

I am running a database backup -- a 7 MB SQL -- using the phpMyAdmin Import function -- and getting an error, whose text doesn't really show where the problem is. MySQL said: Documentation #1064 - ...
0
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1answer
151 views

Wordpress Insert not working with ajax

I am trying to enter insert data with form in wordpress and want to use ajax for that. Without ajax it works fine but when I use ajax pressing the submit button gives 0 in result and the data is not ...
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0answers
212 views

SQL query equivalent to WP User Query

I have the following WP user query code: //Get all users sorted by whatever $sorted_users = new WP_User_Query(array( 'orderby' => 'meta_value', 'meta_key' => 'satisfaction_rating', ...
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84 views

Sanitize a working query string by using $wpdb->prepare() fails with MySQL DB error “right syntax to use near '3' at line 1”

I was using the following properly working query so far: $querystr = " SELECT wposts.* FROM $wpdb->posts wposts, $wpdb->postmeta wpostmeta1, $wpdb->postmeta wpostmeta2 WHERE wposts.ID ...
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1answer
76 views

Why won't this wpdb get_results query return results?

Having trouble with this query. It returns an empty array even though I know the variables are correct and that multiple rows exist in the database that match. $results_a = $wpdb->get_results( ...
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3answers
4k 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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72 views

Using $wpdb (WPDB class) 'replace' with multiple WHERE criteria problem

I have two fields that are used to identify a particular row (acting as a composite key). If it does not exist, I wish to insert a new row. The REPLACE function ...
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1answer
46 views

MySQL queries in Wordpress

I have a MySQL database table called stock which holds a stock record on items for sale. When querying the database using PHP I have no issue, but when I try to do it through WordPress it doesn't ...
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2answers
303 views

Return only Count from a wp_query request?

Is it possible with the standard build-in tools in Wordpress to get wp_query to only return the count of an query? Right now, I’ve a query which has several meta_queries but what the only thing I’m ...
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1answer
150 views

You have an error in your SQL syntax - Help with query

I have a programmer that developed a custom plug in for a client's website and after moving the site to client's server, some parts are not working. Looking at the error log, there is an issue with ...