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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195 views

Get a count of how many times a term or a category is used in posts

I need to find out the number of times a term/tag or category is used in a post in WordPress. I wrote the below SQL query. SELECT t.name , count(*)FROM wp_terms t JOIN wp_term_taxonomy tt ON ...
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1answer
225 views

How do I insert a new meta key / value pair, but only if another meta key is present?

I need to add a new meta key and value part only on posts where another key is present (regardless of its value). I tried to use a query to automate it, but my SQL is quite limited Here's what I ...
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2answers
320 views

How to use get_results() in widget front end?

I'm trying to get_results() in my widget's front end, this is my current code: public function widget( $args, $instance ) { echo $args['before_widget']; if($children = $wpdb->get_results( ...
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1answer
297 views

How to concatenate two separate colums into one?

In phpmyadmin I have two separate columns for latitude and longitude. e.g. lat: '38.897683' lng:'-77.03649'. These coordinates are generated for my location custom posts. How can I automatically ...
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1answer
442 views

Custom SQL query ORDER BY term_order

I have custom taxonomy that list terms under "series" that contain posts that are also present in terms under "media_type" and where media_type is term_id 16. I want to order the list by the ...
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1answer
106 views

Custom $wpdb returns unexpected time based results

I am using the $wpdb class to do a custom SQL query but I am getting weird results. Basically this is what my SQL query is supposed to do Retrieve the titles of post_types 'question' only if they ...
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1answer
584 views

pull data from a remote wordpress database

I am trying to pull some data from a remote wordpress database. Here is the code I have: $server = "my server code"; $user = "my username"; $password = "my password"; $db = "mydb"; $con = ...
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1answer
48 views

How to migrate a database from a server to another

I try the export method of phpmyadmin, but the user is exported with the data... so there is no way to re import it into another database without error message. The old user is name : ...
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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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1answer
50 views

Removing posts by sql

Often i build a site and we have test posts. I was wondering if there's a way via sql to drop all the blog posts with a simple sql query. Obviously, I would have backed up my previous database before ...
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4answers
2k views

I need a SQL command to delete specific authors and all posts connected with them

I unfortunately have authors with a lot of unreadable/spam posts published (thousands some of them) I have tried deleting through admin,but its a slow painful process-does anyone have a specific SQL ...
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1answer
29 views

Posts modified in the last 48 hours

I am using the code below to generate posts created in the last 48 hours. function filter_where($where = '') { $where .= " AND post_date > '" . date('Y-m-d', strtotime('-2 days')) . "'"; ...
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1answer
21 views

Update user_login, user_nicename, and display_name

I have about 600 user records I've imported from a WooCommerce site, but they have the email as their username and I need their username to be first.last So I'm trying to find a SQL way to update all ...
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1answer
54 views

A faster way to query custom post types with multiple conditions?

I am using a lot of custom post types (CPTs) with custom meta and so far I have been using queries like the below, to get for example all events in CountryX that happened in 2014: <?php global ...
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1answer
119 views

WP User Query get all authors with last name starting with specific letter

I need to program a page to which I pass an initial through the url and it will show all author users whose last name starts with that letter. I would like to do this via WP User Query so that I can ...
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1answer
24 views

DB_HOST - is LOCALHOST speedy than domain name? [closed]

I am interested, on some hosting(although they are paid hostings, and even the domain.com DNS nameservers are pointed to that hosting), you have to insert: mysql.domain.com (instead of: localhost) , ...
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1answer
490 views

SQL Error wp_commentmeta - incorrect table definition

I'm trying to import a database and wonder how I can stop getting the following error? "#1075 - Incorrect table definition; there can be only one auto column and it must be defined as a key " ...
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1answer
34 views

wpdb->get_var always returning 0

I am trying to run this statement: global $wpdb; $amt = $wpdb->get_var($wpdb->prepare("SELECT SUM(amount) as amt FROM wp_pay_table WHERE postid = %i", $pid)); ...but $amt always comes out as ...
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1answer
47 views

Why my query does not run with prepare

Hi Below is my query and it works with prepare keyword on the localhost but whenever I use prepare keyword with my queries on live server the data does not show up and as soon I remove prepare from ...
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1answer
75 views

How to filter sql only for a specific post type

I have been trying to join a custom table with a regular wordpress query, but only under a specific condition (a specific post type). I have a single-event.php template that runs the main query, and ...
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1answer
52 views

Clean up very big and very dirty database

I'm trying to clean up a database in order to move a website from a server to another. Database is more than 1gb, mostly posts revisions and spam comments. Is it safe for instance to do something ...
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1answer
49 views

WPDB SQL Ignore `post_status` Parameter

I use this SQL statement: SELECT * FROM wp_posts LEFT JOIN wp_term_relationships ON ( wp_posts.ID = wp_term_relationships.object_id ) LEFT JOIN wp_term_taxonomy ON ( ...
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1answer
234 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
92 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
313 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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2answers
3k 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
121 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
458 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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2answers
503 views

mySQL queries are executed twice on wordpress website

I'm sorry for my english. I'm trying to add some functionalities at my Wordpress website and to do this i have added a function in my function.php theme. The idea is to save in a custom table some ...
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1answer
287 views

SQL - Remove All The Users and Create A New User With Admin Role Via PhpMyAdmin

It is very easy to remove all the users and add a new user with administrative role via wp admin panel. But the requirement is to achieve this through SQL. I can trunc wp_users and wp_usermeta table ...
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1answer
321 views

phpMyAdmin displays error when importing database

I'm migrating a WordPress for a friend to a different server. I have already backed up all files and was given a copy of the database by the old server admin. The problem is that when I try and import ...
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1answer
839 views

$wpdb->get_var - What value is returned when zero records are found?

I have the following code: $queryPermission = $wpdb->get_var( $wpdb->prepare("SELECT Active FROM testers WHERE user_id = '$user_id' ")); ...
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1answer
134 views

SELECT from wp_users, get Displayname too

SELECT post_author, count(ID) as amount FROM dbold_posts WHERE WEEKOFYEAR( post_date ) = WEEKOFYEAR( NOW() ) AND post_status = 'publish' AND post_type = 'post' GROUP BY post_author ...
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1answer
47 views

How to avoid filling up an array each time I run a WP_query?

I am making a following user system and need some help for retrieving the users ids a user is following. At the moment I am using the following SQL query for retrieving the users ids a user is ...
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1answer
423 views

How to SQL query posts IDs by categories AND authors?

I am making a custom WP_Query and I need to come up with a SQL query that gets the posts IDs from X categories and Y authors. Then merge those IDs and put them in an array. I only need to figure out ...
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1answer
205 views

What is the point of get_comment_count() if you cannot limit by a comment type?

We are finding that large WooCommerce sites run very slow. Amongst many issues, this one has me scratching my head. WooComemrce stores order notes in the comments table, giving them a comment_type of ...
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1answer
2k views

How to display data from db in select list [closed]

I wonder what it's wrong in my code. I can't get all of data in column "adres". In result I only have the lest record. Thanks for help. global $wpdb; $result = $wpdb->get_results ("SELECT ...
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1answer
112 views

Help me SELECT thumbnail from SQL and use

//MySQL Username $user = "myuser"; //MySQL Password $pass = "mypass"; //MySQL Database Name $database = "mydb"; //Number of posts you want to have appear $numOfPosts = 7; //Setup connection $mysqli = ...
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1answer
510 views

Select column name dynamically mySQL Query

$country="USA"; $dr=$wpdb->get_results("SELECT $country FROM wp_shipping WHERE ID=$ids"); I want the above query in WordPress file, where country name is given dynamically but I am not getting ...
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1answer
1k views

How to remove in the wordpress database all posts revisions except the last three?

here is the commonly recommended sql command for removing posts revisions and cleaning up the wp database: DELETE a,b,c FROM `wp_posts` a LEFT JOIN `wp_term_relationships` b ON (a.ID = b.object_id) ...
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1answer
169 views

wpdb_prepare with multiple or condition

I want to execute a query like this: $wpdb->prepare( "SELECT * ... from ... WHERE ( post_title LIKE '%%%s%%' or post_content LIKE '%%%s%%' )..., $string ); If I do the query with only one ...
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1answer
93 views

For a complete backup, is it enough to copy htdocs and export database?

I copied the htdocs via FTP from the server which hosts my wordpress blog. Moreover, I used phpMyAdmin to export the MySQL database. When I move to a new server, can I just create a database, run the ...
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1answer
643 views

When sorting WP_List_Table, table sorts, but I also get SQL errors

Here's my lovely prepare_items() function: function prepare_items() { global $wpdb; $table_name = $wpdb->prefix . 'blah'; $per_page = 100; $columns = $this->get_columns(); ...
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1answer
50 views

Wordpress SQL - How to Check for Category?

I'm using the following SQL (wrapped in php) to find posts in a wordpress database: $sql = " SELECT p.* FROM {$wpdb->prefix}most_popular mp INNER JOIN ...
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2answers
4k views

Getting value from database table depending on field value

I am using a plugin called formidable which is similar to Gravity Forms in terms of purpose. I have two fields of interest. The first field loads up all the values in the Town column of my ...
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1answer
313 views

SQL: Select wordpress posts with given text string and add a custom field to them?

I want to select all wordpress posts that have a certain text string. Then to add a custom field to all those posts. Here is what I figured out so far but it doesn't work INSERT INTO wp_postmeta ...
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1answer
150 views

An action hook where a comment meta is updated

By analogy to the hook on post meta update, I use the following code for hooking when comment meta value is updated. My comment meta key is "consider" and can have 2 values: 0 and 1. My Goal is to ...
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1answer
103 views

count number of all comments by a user on different (non-repeated) posts

I thank you in advance for your help. I am using Wordpress for about 2 years, but always avoiding SQL inside my scripts and looking for built-in functions to perform my goals. To count the comments ...
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1answer
264 views

wpdb prepare sql problem

I have problem with wpdb prepare and sql query. If i run the query directly thru wpdb->get_results it's working fine. Here it is: $alabala_sql = $wpdb->prepare( " SELECT * FROM ...
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2answers
151 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 ...