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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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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13 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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1answer
309 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
101 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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1answer
287 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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49 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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1answer
1k 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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73 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
3k 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
41 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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1answer
43 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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6k 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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1k 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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1answer
2k 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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1answer
40 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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1answer
97 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
84 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
4k 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
266 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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0answers
69 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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1answer
151 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
4k 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
470 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
395 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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314 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
81 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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2answers
299 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
4k 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
36 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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0answers
220 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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314 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
116 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
4k 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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1answer
105 views

Custom Fields Bulk Edit

I have a question. I am running detube theme which has a custom field named "dp_video_code" in which i put my video embeded code. Recently the embeded code has change and I need to modify the video ...
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1answer
57 views

How to order posts by the user_login that corresponds to a meta_value (which is a user id)?

I'm trying to create sortable column headers for a CPT list, but I'm stuck on one piece. When clicking on an "Assignee" column head, I want the list to display alphabetically by the login name of the ...
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1answer
281 views

Wordpress SQL query - returning 'true' 'false' or 'null'

I am working on coding a PHP form for my website that requires the user to enter a code before the form becomes active. I have a field called "used" that I set up as a Boolean/TinyInt which I thought ...
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1answer
139 views

Replace Unwanted Space in Post Content URL

I have a Wordpress site with a couple hundred posts. The posts were being created with batch processing and a piece of code was being inserted dynamically. I found an error in the URL of one of the ...
9
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3answers
15k views

How do you properly prepare a %LIKE% SQL statement?

I'd like to use a LIKE %text% statement while still using the WordPress $wpdb class to sanitize and prepare input. SELECT column_1 from `prefix_my_table` WHERE column_2 LIKE '%something%'; I've ...
6
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3answers
12k views

WPDB Insert or if exists Update

I'm not crazy familiar with WPDB or SQL in general but I have a custom table for my project and I'm trying to assign some metadata to it. What I'd "like" to happen is if a row exists, update it and if ...
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2answers
216 views

What's wrong with my $wpdb prepare

I can't get my head around this. I get this error: Parse error: syntax error, unexpected '"' in 224. The line is this between foreach $html: $html = ''; foreach ( $recent_across_network as $post ...
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0answers
60 views

Exclude posts from certain meta_key

I have query to retrieve all posts, but how can I check the condition for post meta_key ="develop" and meta_value='anything' SELECT DISTINCT date(p.post_date) as post_date FROM $wpdb->posts p ...
0
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1answer
135 views

wpdb getting avatars and author url

Running an SQL query to pull authors by votes they've received on posts. @bonger helped me out on my first post and helped me get this working great, but I created this new question since it's a ...
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1answer
525 views

$wpdb select date range of posts

0 down vote favorite Using this SQL query to sort users by how many votes(meta key) their posts have received. <?php global $wpdb; $results = ...
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1answer
117 views

Can't get result from sql using ajax result

I'm using an AJAX form to feed the code something to lookup in db. Separate table, not WP options. I'm getting the result from AJAX, but when I try to do the sql it just returns 0. This is the ...
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1answer
164 views

how to insert missing tags into the posts through mySQL?

I am looking for a SQL query to insert a tag to multiple posts from a specific category. A pseudo query looks something like this: INSERT INTO POSTS VALUES TAG = "tagName" where Posts ...
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2answers
84 views

Query that loads a custom type AND posts whose ids are not inside those custom types custom fields

On my news website I have posts and another custom type called "aggregato". This type has 10 custom fields, "link01", "link02"... "link10". Both posts and aggregato has a meta key, called "home", ...
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0answers
342 views

SQL query for converting post meta image url to featured image

WordPress guru, we have a question: We work on a website, which was not updated a while. Most of time it have wordpress 3.2 installed. We've updated it to the latest wordpress version, but ...
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2answers
158 views

How to add chunk of php, html, and sql code to variable an append to $content

I am creating a plugin (my first) which allows the site admin to display the most used post tags over the last X number of days. This plugin is an evolution of the WP Development question here - ...
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1answer
260 views

WordPress SQL query to tag all posts containing a specific word on title

Is there a way to bulk tag all posts which have for instance "bottle" in their titles? Thanks!
2
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1answer
213 views

How to update records using $wpdb?

I am migrating non-wp database to Wordpress (for the first time in my life, and hopefully the last). As both new and old websites are multilingual, one of the tasks for me is to connect the articles ...