Question

The WordPress database schema for Users is as follows:

TABLE wp_users
ID
user_login
user_pass
user_nicename
user_email
...

TABLE wp_usermeta
umeta_id
user_id
meta_key
meta_value

Now, it’s the wp_usermeta table that I want to be able to write a SQL statement for.

In one row, meta_key is “first_name” … how do I write a SQL query that will pull out the meta_value where meta_key is equal to “first_name”? This does not work:

SELECT meta_value FROM wp_usermeta WHERE meta_value = "first_name";

Answer 1

It should be

SELECT meta_value FROM wp_usermeta WHERE meta_key = "first_name";

Notice you had WHERE meta_value instead of WHERE meta_key