sorry for cross-posting: I posted a similar question on StackOverflow but I received no attention (my fault, for sure).
I need to query a Wordpress database.
The first table is
wp_posts: from this table I need to retrieve the
ID and the
post_content where the post_title is
“C”. This is of course fairly easy:
SELECT ID,post_content FROM `wp_posts` WHERE post_title IN ("A","B","C") and post_type = "plugin_is_writing_this_record"
post_type is necessary here because only a particular Wordpress plugin writes records using that post_type.
Problem is that the same plugin (a plugin used to send forms) replaces with a 0 a vital information for me: the
post_author, that in
wp_posts is generally the
id of the user who created the post, is NOT the id of the user who posted the form, but the id of the user who created the post where the form is located. I need to retrieve the id of the user who posted the form.
ID of the post in
wp_posts, I could get the
If you query this last table this way:
SELECT * FROMwp_postmeta
WHERE post_id = 277125 (*)
you get data this way (I cut down data a little):
meta_id | post_id | meta_key | meta_value ---------------------------------------------------------- 3 | 277125 | _from_email | firstname.lastname@example.org 4 | 277125 | _field_your-surname | Surname 5 | 277125 | other_meta_key | otherdata 6 | 277125 | ... | ...
At this point, I know
_from_email meta value is related to the mail of the user who posted the form (I need to retrieve even other meta_keys from this table but this one is functional to the query and to this question).
The table that contains the
ID I need and the email of the user is of course
wp_users, a third table.
Is it possible in a single query over the three tables at once to retrieve the data I need? I tried some JOINS but I couldn't get them working properly. Any help is appreciated.