How to query for Meta key in WP postmeta?

How to query for Meta key in WP postmeta?

If I show the index of the table, it returns me: explain select post_id, meta_key from wp_postmeta where meta_key = ‘mykey’ and meta_value = ‘somevalue’ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE wp_postmeta ref meta_key meta_key 767 const 597392 Using where

What’s in the WP _ postmeta table in WordPress?

What’s in the wp_postmeta table? wp_postmeta is a standard WordPress meta table, so it comes with a unique ID for the row, the ID of the post the row is attached to, and meta_key and meta_value pairs that actually add the metadata to posts, pages, and attachments.

How to get post ID by meta value?

You need custom loops or functions to filter/get your posts using those meta values. In this post, we share with you a basic PHP code snippet for getting post id by meta value. If you need to use post id in a loop, the recommended way of using custom loops is the WP_Query method. This method doesn’t modify the default query so it is safer.

Where can I find the most recent meta key?

You can check prefixes one by one to see when they were most recently used. Use your own prefix: This will give you the most recent post_id for the meta key. If it’s 500 posts ago, you may have junk. If you are only checking two or three, this is easy enough.

Why is my WordPress meta table so big?

WordPress stores these custom fields in post_metadata table thus increasing the size of your database. The problem here is that even you uninstall and delete the plugins, these custom fields in old posts will not be removed. You have to manually delete them from the post editor or delete on the database directly.

What is the prefix of MySQL post meta table?

By default, MySQL tables will have the prefix of wp_. For example, the post content table will be like wp_posts and post meta will be like wp_postmeta. However, if you have changed the prefix during installation then you will see different prefix on your database. Login to your cPanel hosting account. Click on phpMyAdmin app.

How to delete post meta table in WordPress?

Use the below query to delete all entries that contain the keyword “review”. Replace the keyword suitable for your case to delete the entries from post meta table. In order to delete custom fields, you should know the name and where used post list. The easy way is to delete them from the database using the similar code like above.

How to run a MySQL Query in WordPress?

How do I run a mysql query in wordpress? – Stack Overflow How do I run a mysql query in wordpress? This query works and returns the results that I want in MySQL but how do I get this to work in wordpress? I want to be able to see all the ‘points’ earned by user 1. I need to be able to display this on posts and pages in wordpress. Read this.

How to get users with role in WordPress?

If anybody struggling with the same issue please use my SQL query above. Here’s a slight variant of @qqruza’s answer that includes the user’s email and role and returns users for all roles.

Is the post meta table the wrong place?

If you are looking for DB performance “out of the box”, then the post meta table is the wrong place to store things that you will want to search for. The way you describe your query it will be much better to use a taxonomy for that usage case.

How to clean up the WP _ postmeta database table?

Check the prefixes against your current plugins to find obvious orphans Do deeper searches on prefixes with many rows to get the full list of keys Look for outdated meta keys with a date search I am no longer using the commenting plugin Disqus on Rawkblog, for instance, so anything here with “disqus” in it is going to be trash.

Why are my WordPress database queries so slow?

Slow SQL queries can crush your WordPress site’s performance. Sometimes, slow queries are a result of poorly-formed SQL that never should have been done that way. And sometimes, slow queries were actually fast queries at one point—but as the site grew older, the query got slower and slower, unable to keep up with the expanding database.

How to find the source of slow queries?

Finding the source of slow queries involves 2 steps: Identifying which queries are actually the slow ones. Finding the code that is generating and executing them. Let’s look at two plugins and one SaaS that can help us find slow queries.

What’s the best way to cache a WordPress query?

To cache the query, we could use the WordPress Transients API. Transients are used for storing results of expensive operations, such as: Slow database queries! Storing query results in a transient like so means the query will only be performed once every hour or so.

What do you need to know about post meta?

WordPress permits you to store multiple rows of the same post meta for a single post, so you can get an array of data without needing to serialize it and store it in one key. To do this, you need to slightly change how you’re interacting with the post meta api here. Something like this is what you’d want:

Can you store multiple rows of post meta in WordPress?

WordPress permits you to store multiple rows of the same post meta for a single post, so you can get an array of data without needing to serialize it and store it in one key. To do this, you need to slightly change how you’re interacting with the post meta api here.