SQL (Structured Query Language) is a special-purpose programming language designed for managing data held in a relational database management system (RDBMS).

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Protect custom form from SQL injection

I'm trying to understand how to protect my custom form from possible attacks. I send a data via a form, let's say userdata, then I read it: $userdata = $_POST['userdata'] I put it into an array to ...
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2k views

Using AJAX to run SQL statement and populate dropdown

I am trying to create a search where the user selects two different bits of data from the database and it then prints some results that meet requirements. I know I need to use AJAX, or something ...
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2answers
37 views

SQL to check how many sites a user is a member of

I have a multisite installation and I'm working on creating a reporting plugin. One of the things that I would like to do is show the number of sites a user is a member of. Right now, I'm using ...
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2answers
358 views

Bulk move (or copy) from a custom field to the post content?

I need to move (or copy) the contents of a custom field into the main post body, replacing any existing content. I need to do this for a few hundred posts...Is there a quick way of doing this? I can ...
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3answers
344 views

Problems with moving my Wordpress site to another domain/server

I'm having problems moving a wordpress site from one domain to another. I've searched the site but couldn find a useful answer for my situation. Here's what i did: I made a backup of the website. ...
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14 views

Help with SQL query, how to add taxonomie terms with value stored in options?

i need your help in making SQL What i have: custom post type ( company ) taxonomie ( category ) applyed to cpt ( and has ct section select field ) custom taxonomie ( section ) applyed to nothing ...
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1answer
38 views

SQL query to get adjacent posts from search query

I'm busy rewritting a custom function I have recently written to get adjacent posts according to a tag, category, custom taxonomy term, author or search value saved in the URL I'm using the structure ...
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2answers
791 views

SQL - Pull products of particular category from a remote WordPress woocommerce db

I connected to the db and successfully pulled products data. Now I want to to display products from specific category. The store is using woocommerce. The landing page is in different location so I ...
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1answer
17 views

How change user type from contributor to author

I have 2058 users who are contributors. I need to convert their role to author. How can do it by SQL?
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37 views

Better way to migrate to server?

Migrating between local and server with Wordpress (SQL) is a bit time consuming, and I'm wondering if there is a better way to do it. With Drupal, there is a module called BackUp&Migrate, which ...
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0answers
51 views

Pull data and display as rows and columns

I am a noob when it comes to pulling data from tables and fields of a WP database so I'll explain it as best as I can without it running into a thesis. I have a table called WP_answer. In that table ...
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2answers
54 views

Is it possible to have more than 1 sql databases in my wordpress blog?

I m watching video on installing wordpress manually. on first launch wordpress prompts you to input your sql database name, sql password etc. then i can start working from dashboard. is it ...
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11 views

What are the steps to migrating my blog to a new host?

I recently bought hosting service with Namecheap. I backed up my db from my previous host and now want to migrate everything. I was restoring the db with phpMyAdmin, uploading the sql file, but this ...
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16 views

WP Sql query multiple where clause

I'm trying to get the users that have registered after a specific time (this case $today) and who have the newsletter field true and the account false. This is what I have so far but the result is ...
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1answer
99 views

Proper approach to moving complete site from one domain to another AND preserve widgets

I consider myself fairly versed in this matter, however I've recently had a rash of issues when moving sites. I am able to successfully move the site, edit wp-config.php, move the database, etc. ...
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6answers
39k views

What SQL Query to do a simple find and replace

Whenever I create a new website I first create a staging site on a subdomain like "stage.domain-name.com". After everything works correctly I export the database, open it in notepad++ and do a ...
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1answer
46 views

Add custom fields to search

I want to add a custom fields ("introduction" and "ensavoirplus") to search of Wordpress, but the SQL code is not exact. I don't understand if i do a mistake or if WP don't can do this. But my attempt ...
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36 views

How to merge 2 WordPress sites?

I have 2 WordPress sites, A and B. Each of them has users and posts. Now, I want to merge these sites. Points to be noted- A has 1000 users and 2000 posts. B has 500 users and 3000 posts. There are ...
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35 views

WPDB update row with != in where clause

I'm using wpdb to develop a plugin to add a custom form to wordpress. To update a row, I use an array and wpdb->update(). WP Class Reference says: My SQL code should be something like UPDATE ...
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4answers
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WP_Query with “post_title LIKE 'something%'”?

I need to do a WP_Query with a LIKE on the post_title. I started with this regular WP_Query: $wp_query = new WP_Query( array ( 'post_type' => 'wp_exposants', ...
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0answers
22 views

delete duplicate comments

I found a solution for this a long time ago. Here is the code: <?php require_once('wp-config.php'); global $wpdb, $comment_content, $comments,$comment_ID; # First select all comments $query = ...
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2answers
1k views

How to Mass Delete Images from Media Library

I need your help. I am trying to mass delete attachments from a custom post type ('book') using a sql query. I found this snippet on the wordpress form: Wordpress.org I tested it on my local ...
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1answer
21 views

Creating a “forum” - showing last post or last commented post

thanks for reading! Im creating a forum just using categories and posts. I'd like (as most forums do) to show the last commented post or the last created post (which ever is newer) next to the ...
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34 views

Front end access to a SQL data repository - recommended way?

Building a general data repository, not necessarily related to WordPress elements. What is the recommended way of doing it: Using custom post types? or Building new SQL tables? Please elaborate. ...
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2answers
132 views

Insert Query not working in the form

Many people has asked the same question, I have read those things and mine is different, I am trying to insert some values inside the database from the form but it's not getting inserted I have a ...
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362 views

Custom SQL Query: Get all posts with category id and a concated list of tags on each post

I am trying to select all posts from a WordPress database, include few fields on each post, but most importantly I would like to also select the "category id" or each post, and ALL the tags that ...
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1k views

Export SQL query based on post type

I'm looking to export only wp_posts where post_type = post. Is that possible?
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27 views

Debugging WordPress

Looking for advice on debugging sql queries. I find that plugins and themes are causing heavy queries and slowing performance. Any easy ways for doing this? Tools? Shortcuts? Thanks! Daniel
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33 views

Minimize Performance Issues of MultiSite Large Number of Tables Created

I am deploying WordPress MultiSite and if I get a decent amount of users, I will have thousands of database tables to support all of these sites. I like the idea of consolidating all of these tables ...
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1answer
41 views

Query to get data of a post, if in category?

You would think you could use $query = new WP_Query(array( 'p' => $idofpost, 'cat' => $numbers )); to return the post if it is a certain category (or categories, or -number to exclude ...
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1answer
3k views

Overriding default calendar to show posts from a category

I'm trying to modify the default WP calendar (get_calendar()) so that it shows posts from a specific category and then use that as a shortcode. Here's what I've done: Copied across the ...
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1answer
169 views

SELECT * FROM $wpdb->posts WHERE ID > 160

I would like to retrieve all posts and relative tag with ID greater than 160. I tried: '$args=array( 'post_type' => 'post', 'post_status' => 'publish', 'posts_per_page' => 5, 'orderby'=> ...
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1answer
34 views

Custom query to get terms from post ids

I want to get the terms object by given posts ids. I don't know much about sql, and this kinda complicated for me. Here is what i tried: global $wpdb; $taxonomy = 'category' $term= ...
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29 views

Unable to replace text string across site

There is a text string (a little over 1000 characters with spaces) that needs to be replaced across the entire of my website. The text recurs over 300 times on my site, is identical, and was been ...
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57 views

List of ways to access WordPress database?

I'm trying to get a complete understanding of how WordPress works with databases. I've read the documentation but I'm getting confused by all the different approaches available. So far my ...
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3answers
2k views

How do I add indexes to Wordpress Database?

I got a message from Hostgator about my account being suspended because of the load it put on their servers. This is about the fifth time this has happened. I am on a shared server. And they said it ...
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1answer
313 views

SQL Bulk Move old posts by one author to another category

I'm looking to move a number of old posts by one author from one category to another category and was hoping someone could help me do this? I figure the easiest way would be through an SQL command? ...
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1answer
83 views

Bulk update post slugs through database

Is there a way to bulk update permalinks through the database? cause I have like 20k posts and all I want to do is add a prefix to the permalink. I could just manually update but that's too tiresome ...
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51 views

SQL command to export post_content from wp_posts using phpMyAdmin

I'm trying to select all the data from within the post_content column in the wp_posts table in WordPress so I can export/import it into a new database. Somehow this content didn't properly make it ...
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0answers
58 views

WP Query to order posts by multiple meta fields

This question might have an answer already in the forums, however I still wanted to ask it as this is a different more complicated version of the problem. The story: We have 2 meta fields for ...
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0answers
82 views

Import SQL tables from SQL file on plugin install

I'm building a plugin, on installation of the plugin it needs to create several tables. Now I found out that I can do that in the plugin code sorta like this.. // Function to create new database ...
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2answers
250 views

Extending WP_Query — Optimise SQL query

I'm storing posts, a user follows in a custom table that has the columns id, post_id and user_id. To fetch posts that a user follows I have extended the WP_Query as follows: class ...
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2answers
304 views

How to display posts of specific category using a custom Query in WordPress?

Hi I want to display a specific category from a custom query in WordPress. My code works fine and it gets the latest 4 posts, but what I want now is to retrieve a specific category. My code is below ...
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1answer
22 views

SQL - JOIN last child

I'm trying to do some custom filtering. I need to JOIN latest child post_author. This doesn't seem to work well, it keeps returning wrong childs: SELECT * FROM wp_posts LEFT JOIN ( SELECT ...
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66 views

Remove posts inside pre_get_posts using a custom query

I need to remove posts from admin listing, if their last child post author is different than the parent post author. I was hoping to use pre_get_posts, but can't figure out how to do this. Here's my ...
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110 views

Get post ID and custom taxonomy of posts that belongs to certain category, efficient by SQL?

I have a large Wordpress site with almost 200 000 "posts" (everyday is aded more than 2000 new) and sppecific homepage with about 30 loops to get last 5 posts from every category (sngle loop = single ...
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1answer
46 views

Custom Field Create Bulk via SQL Query

I have a question. A created a custom field named video_desc. I have ofer 2000 posts and I need to add this custom field to all posts and add the text "Description Here" to it. How can this be done ...
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2answers
275 views

How To Get Some Data From WordPress Database Using WordPress $wpdb Query?

I am trying to get some data from WordPress database tables in a plugin. For that, I am using the below code... global $wpdb; $findID = $wpdb->get_var("SELECT ID FROM wp_posts WHERE post_name = ...
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34 views

Move Content of Custom Field to Post Content

Hello everyone I have a custom field in all my posts - the field is _listing_additional_info This is on a custom post type called listings. I need to move the content of those custom fields into the ...
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5answers
8k views

Most efficient way to get posts with postmeta

I need to get a bunch of posts with their metadata. Of course you can't get metadata with a standard posts query, so you generally have to do a get_post_custom() for each post. I'm trying with one ...