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

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2
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256 views

How to let a user choose an authors and save it to the database?

I have a multi-author Wordpress site which reads different rss feeds and posts them to my page. I was wondering if it is possible to make a code that would provide an opportunity to registered user ...
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38 views

mysql_real_escape_string() vs. esc_sql() in WordPress

Does mysql_real_escape_string() and esc_sql() in WordPress both do the same thing? I tried the following: $fetch_row='<p>And again for single posts</p>' echo mysql_real_escape_string( ...
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0answers
73 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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0answers
78 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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0answers
120 views

Slow wp-admin due to “SELECT DISTINCT post_mime_type FROM wp_posts WHERE post_type = 'attachment'”

The media library on a large site is slow in wp-admin. I did some research by looking into slow queries in the sql and found that this query is causing the slow response: SELECT DISTINCT ...
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0answers
23 views

How to migrate the posts from an old custom legacy blog to a new WordPress website?

I have to migrate the posts of a very old custom legacy blog made in ASP (the posts are stored in a MySql table) into a new WordPress blog. So I need your help to find the smartest solution to do it, ...
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0answers
225 views

Slow meta_query with about 4 milion record on wp_postmeta

Although optimized wordpress all the way but still very slow as follows : I have converted from LONGTEXT meta_value field to TEXT Then create INDEX for this field ALTER TABLE wp_postmeta ADD INDEX ...
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0answers
112 views

Delete duplicate rows from wordpress database where a column is duplicate in phpmyadmin

I have a wordpress table like so (phpmyadmin and MySQL) | id | meta_key | meta_value | +----+-----------+------------+ | 1 | import_id | abc | | 2 | import_id | abc | | 3 | ...
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203 views

MySql Query very slow

I have a problem with a query on my website. When I load the page it is incredibly slow and only after over 12 seconds the content starts showing. I have installed a debug plugin and found the query ...
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0answers
78 views

Calculate average crossing post categories

In my WP database I have some posts i the category hotels and some other posts in the category visits. In the posts (placed in the category visits) there is two meta_fields ( rating and placeid ) ...
1
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0answers
221 views

Renaming admin user on multisite install by MySQL

As part of a general tightening of security, I want to change the name of the admin user on my multisite install to something less commonly used. This user is admin on all five sites in the network ...
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0answers
291 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 ...
1
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0answers
582 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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0answers
283 views

Wordpress running SQL query to update database from form

Basically I want to take information in from a form and use a separate php page to update the database. so here is the original wordpress php page (add_person.php): <?php /* Template Name: ...
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0answers
368 views

Cleaning up bloated wp_postmeta table by removing multiple _thumbnail_id's?

On a very old site (7 yrs) with a lot of posts (30k) I've been trying to whittle down the database tables. The postmeta table is 1.5m rows, 750k of those rows are for a meta_key named ...
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0answers
2k views

How to fix database error duplicate entry

At first I thought this was just a damaged table, so I tried repairing via MySQL, but it appears there's more fundamental issues. Which of the duplicates should I remove, and any further advice in ...
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0answers
121 views

WordPress plugin overloading with tmp tables

I have asked at the plugin's (WordPress Popular Posts) support a few days ago, since no response hope to get some insight or help here. Thanks. Hesitant to tweak settings like max_heap_table_size ...
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0answers
327 views

WordPress Query wp-terms SLOW

I've got a very large database in WordPress with lots of products in WooCommerce along with quite a bit of taxonomies. When querying the products on the front end it takes 1 minute or more. Here is ...
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0answers
81 views

Regex to turn embedded images in to attachments

I've got a blog that has all images embedded in each post rather than a thumbnail linking to an attachment page which is what I'd like. I understand from this question that no plugin (like Regenerate ...
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0answers
211 views

Query most popular terms by taxonomy over 2 week period

I have written SQL for a query that pulls the most used taxonomy terms for selected taxonomies that are published, do not have a parent post are not in a comma separated list over the past two weeks ...
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0answers
269 views

List authors with the last post title and order by last post date

I want to list authors with last post data and order them by last post date. Now i have this codes but i don`t know how to edit them. // Selects from tables wp_users and wp_posts, selecting published ...
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0answers
60 views

How can I make wordpress suppress mysql errors?

Wordpress has two functions related to SQL queries and their errors as mentioned in What Is The Difference Between suppress_errors() And hide_errors() in $wpdb? From what I've read setting WP_DEBUG ...
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0answers
7 views

wp_list_table, jquery get the value of the checkbox

Hello i'm trying to make inline edit for my wp_list_table. but i've hit a brick wall. the thing is that each elemement/td is made up off 2 class column example: <td class="name column-name" ...
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0answers
8 views

Mysql join 2 columns into 1

Hello i could really use a hand here.. the thing is i want to make 2 tables for a project - 1: Shifts: - which has: id, usr_id, date, start_time, end_time, and pending - 2: shifts_extra: - which ...
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0answers
8 views

MYSQL ignore categories on Wordpress widget

I have this WP widget that pulls random products from the DB. What I really want is to be able to include just a few products categories (or exclude). Can anyone help me? I appreciate. <?php ...
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0answers
73 views

#1115 - Unknown character set: 'utf8mb4'

When I Import Mysql from local server to web ser it is showng me error 1115 - Unknown character set: 'utf8mb4' in Creating wordpress wp_comment table CREATE TABLE IF NOT EXISTS `wp_commentmeta` ( ...
0
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0answers
7 views

Delete all wordpress posts from db that matches a certain condition

Am trying to delete all posts from wordpress database, that are X days old and have a particular meta key-value attached to it. So simply something like this(pseudo sql): DELETE FROM `wp_posts` ...
0
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0answers
14 views

Google-App-Engine[PHP]: Error trying to establish database connection

Hi to whom this may interest, I am finding a problem with the cloudsql as database connection is not being established. I have followed the following site step-by-step ...
0
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0answers
21 views

How to fix pagination issue on wordpress

I have a category with 2 subcategories. i have created a custom category template, to show the posts from the subcategories of that category, so it look like that: category page shows: Subcategory ...
0
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0answers
48 views

Count posts of child category in parent category

Hallo Wordpress Comunity, I need your help. I have a Woocommerce shop site with multiple authors. In the sidebar I want to display a list of woocommerce product categories by author (based on posts ...
0
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0answers
24 views

wpdb giving different results then query in SQL Editor

I'm trying to read candidates and the relation with expertises from 2 custom tables in my WP Database. This is my WPDB query : $candidates = $wpdb->get_results(" SELECT * FROM ...
0
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0answers
11 views

Can tables in WordPress Multisite be combined?

I inherited medium size wordpress multi installation. At the time there were only about 20 different sites, each with their own set of database tables. We now have about 120 sites and over 3,200 ...
0
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0answers
41 views

MySql query to retrieve post_title, post_content and feature image link BASED ON A CATEGORY

I have been trying for quite a long time to retrieve post_title, post_content and feature image link for all posts BASED ON A particular CATEGORY, from a wordpress database. I have got a query: ...
0
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0answers
83 views

Loop through multidimensional array for values, then interest into mySQL table

I have a package of JSON that gives me something like this: [{"a":"5", "b":"9", "c":"3"}] I have a table with with three columns: a, b, c. I want to create entries into the table to match 'a', 'b', ...
0
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0answers
36 views

Term and sub term from custom post type query

I have created a custom post type and taxonomy for a goods catalogue for a hire website. This works fine. I am trying to generate a report that lists all items and their category and sub category. I ...
0
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0answers
51 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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0answers
20 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 ...
0
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0answers
74 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 ($) { ...
0
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0answers
41 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 ...
0
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0answers
28 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 ...
0
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0answers
20 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 ...
0
votes
0answers
95 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 ...
0
votes
0answers
24 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.
0
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0answers
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 ...
0
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0answers
42 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 ...
0
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0answers
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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0answers
164 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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0answers
73 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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0answers
51 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 ...
0
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0answers
49 views

using a function in functions.php to process a form generated in functions.php

so i have a site where users can rate items, it saves their ratings to a mysql db and also tallies the average for the item, saving that as well. as it is a generic function and there are hundred of ...