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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Convert all dates in field to Unix time, except those already in Unix time

I have a meta field that is mixed with MM/dd/yy hh:mm dates and Unix timestamp dates. How do I convert all of the MM/dd/yy hh:mm dates in the db to Unix? I have only limited PHP and SQL knowledge so ...
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31 views

How to add data from wordpress tables to new database tables you have created

I'm just learning this database stuff and so I am a bit confused and was hoping someone could push me in the right direction. I have managed to create users in the wp_tables I have created in my ...
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1answer
31 views

How to find meta entries with their posts missing via SQL?

I'm looking to write an SQL query to do the following: Select all postmeta rows where the meta_value = a post id that does not exist. For example, postmeta meta_value may equal 235. Usually this ...
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84 views

How to set search query for joining two tables in sql?

What's the wrong with this query? SELECT l.company_name,DISTINCT c.sub_cat_name FROM tbl_listing l,tbl_sub_category c WHERE l.company_name LIKE '%cy%' and l.city_id='2' and l.area_id=23 ORDER BY ...
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378 views

$wpdb->prepare with ON DUPLICATE KEY UPDATE

I just took this code from $wpdb Codex page, and modified my existing Insert query: $table = $wpdb->prefix . 'user_req'; $post_id = explode('_', $_POST['post_id']); $user_id = $_POST['user_id']; ...
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56 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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128 views

How to parse meta value from user specific post to google charts?

I'm currently working on a project where i need to visualize the progress of users (fitness). For that i have created a custom post type with custom fields. I want to parse the meta values associated ...
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113 views

Delete duplicate posts where meta_key is the same

I have imported some posts and this has caused some to be duplicated Each post (of a custom post type "property") should have a unique meta_key "import__id" value I need to delete all duplicate ...
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149 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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105 views

SQL query to remove first image in all posts

I've built a site up over a few years (3,500+ posts) where I've inserted images using the traditional method into the post content itself. I'm now moving to a different theme, and have made the first ...
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206 views

SQL to update custom post taxonomies

I have a custom post "review". It uses the same categories and tags from default posts, so they share "category" and "tag" taxonomies. But later I changed the "review" register to have their own ...
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186 views

Use wpdb->prepare for `order by` column name

In my current plugin, I am picking up the order by column as user input. So I thought of using wpdb->prepare to escape it. $wpdb->get_results($wpdb->prepare("Select id from $wpdb->posts ...
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1answer
45 views

Is there a WP function to get taxonomy name from taxonomy_term_id?

I need to get the taxonomy name from the taxonomy_term_id. I am currently using the following to get it: global $wpdb; $term_taxonomy_table = $wpdb->prefix . "term_taxonomy"; $taxonomy = ...
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1answer
53 views

Do I need to deal with WordPress SQL Injection

Do I need to prepare strings against MySQL Injection when inserting into the database using a WordPress comments function such as this: $data = array( 'comment_post_ID' => $post_id, ...
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62 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
39 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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53 views

All images from posts of specific category

I'm photographer and am developing my own portfolio, it's in the final stage. I'm trying to get all images from posts in a specific category. I can actually get all images from all posts, but they ...
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1answer
840 views

how to use $wpdb->prepare to update a custom table

As a noob I dont understand a lot of SQL injections but I need to be save so I have read that I have to use wpdb->prepare to make sure the data is stored correct. At this moment I use the ...
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2answers
37 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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1answer
14 views

looking for a way to allow users to backup the plugin db data(save as)

I have a custom build plugin and I want to add the option to let the user save the plugin data(not using a thirdparty plugin to do this for me). So if a user clicks on the button it will allow them ...
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1answer
81 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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88 views

Multiple taxonomy drill down filter on a collection of posts

I would like to add a drill down filter to a product catalog site with one main taxonomy, and three taxonomies that serve as additional filter for the main product category. The main plan is to build ...
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13 views

The page that displays Posts on homepage

I want to know the page responsible for displaying the blog posts in WordPress. Where I can probably expect to find the SQL query and post rendering so I can edit some stuff by myself.
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257 views

Custom WP_Query with SQL directives for getting posts by authors and terms

I am making a custom page where I need to display posts from authors and terms (categories). I tried with the built in WP_query arguments but I am not getting the result I want. So I want to know how ...
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83 views

Randomly select one of last 3 posts

ok so i have this: $args=array( 'orderby' => 'rand', 'order' => 'DESC', 'posts_per_page' => 1, 'offset' => $offset, ); $q = new ...
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18 views

WP query taxonomies not the same as output

I'm trying to build a custom query and I need to include the current category ID. I previously had the WP_Query args as: Array ( [post_status] => publish [posts_per_page] => -1 ...
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55 views

Order users by 2 custom fields in wpdb query

I've created a WordPress members site, each member is a user with the role of subsriber and has extra information set as custom fields - ie: address, contact details etc. I have the users output by ...
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15 views

error inserting value

Im kinda having some problem in my query and looks alright in my side and tested it in a localhost too. $query = "INSERT INTO$db_name(fname,pass) VALUES('".$_REQUEST['fname']."', ...
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1answer
95 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
22 views

optimise SQL wordpress call

I have this code : $querystr = " SELECT * FROM {$wpdb->prefix}posts INNER JOIN {$wpdb->prefix}postmeta m1 ON ( {$wpdb->prefix}posts.ID = m1.post_id ) INNER JOIN {$wpdb->prefix}postmeta ...
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1answer
110 views

Query Wordpress database by registered date and role

I would like to get the display name and email address for all users who have registered to my multisite today with the role of subscriber. It needs to be an SQL query as it's used outside of the WP ...
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59 views

$wpdb->prepare - supporting multiple search terms

I am trying to write an escaped SQL statement, for example: $sql = 'SELECT * from TABLE where column LIKE %searchterm% AND column LIKE %searchterm2%'; Except I don't know how to handle it, as I do ...
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276 views

SQL Query to select post thumbnail, post title, post content from a category

I use the db of my wordpress blog to develop a mobile application in Java. For this, I need the SQL query to display the thumbnail of a post, the title and the content in a selected category. I think ...
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1answer
65 views

Confused by $wpdb->prepare

I am attempting to use $wpdb->prepare to protect against SQL injection attacks and am lost. I have the following snippet below which checks the h_transactions table for a transaction id. If it ...
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1answer
57 views

Size article thumbnails and retrieve them directly from database

I've integrated the Wordpress database directly with my .NET application. What I want is to set the featured image of a post. This featured image must be maximum 800pixels wide, and automatically ...
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32 views

Genesis framework comments broken?

I got a really weird problem. Im using a Child theme which using the Genesis framework. I was using Akismet plugin to stop the spammers and it was workin just fine. Recently i just made a comment by ...
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78 views

Wpdb generates too many queries

I googled for hours, then found some codes on stackexchange (http://wordpress.stackexchange.com/a/108279/108270) and created the codes below. I'm trying to get alphabetical A-Z posts lists (e.g. A B C ...
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1answer
319 views

Inserting rows into a custom table, when plugin is activated

Trying to create a plugin that creates a custom table & populates it with a row of data, once activated. The table is created OK, but the row of data is not added. Please can someone point out ...
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39 views

SQL update post category by post starting letter

I need to update post category based on post first letter. E.g. all post starting with "A" should go into "A" category. so far i can only select posts starting with "A". SELECT * FROM wp_posts ...
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15 views

How to change location, charset in Wordpress query [duplicate]

I have strange question. How Can I change or set a sql char set in wordpress. In wp_config.php I have: define('DB_CHARSET', 'utf8'); define('DB_COLLATE', 'utf8'); In my plugin I have this: global ...
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1answer
52 views

How to return value from sql and display it

In ordinary php I don't have that kind of problem I think but in WP this is a different story. I have query and I want return one value from "liczba_wodo" column. global $wpdb; if ...
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1answer
49 views

Querying multiple meta_keys in Wordpress SQL query

Here's my Query... I'm looking to narrow this query down to users of one specific role ("meta_key = 'wp_capabilities' AND meta_value = 'employee'")...how do I add that additional conditional to this ...
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98 views

orderby in WP_query doesn't works

I thought that this already works but now I tested it and it seems that it no longer works. I have this code: wp_reset_query(); $args=array( 'posts_per_page' => 3, 'meta_key' => ...
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1answer
64 views

How to optimize multiple insert into wordpress database

I had main file with my plugin and the another file with sql command. In the second file I create two tables and write data to one of them. But I have problem with. In my private computer everything ...
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1answer
204 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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61 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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57 views

Delete duplicate custom field with specific vaule

I'm trying to delete specific custom fields that have been duplicated, however i only want to delete the fields with the value 0 in them. I currently have this code that will delete the duplicate ...
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37 views

problem in sql syntax

problem in Mashable Slider Clone plugin when upload it in server WordPress database error: [You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for ...
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3answers
110 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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58 views

How to import a Typo3 database to a wordpress site?

I have a SQL database export from a Typo3 site. Does anyone know know or have any experience of dealing with these cases?