I am trying to figure out how to create a MySql query that will fill the menu_order column for my custom post type with random numerical data that is unique for every post and is limited to a specific range.
I have come across this select statement which outputs a random number and checks that number does not yet exist in a column:
SELECT FLOOR(RAND() * 999) AS random_num FROM posts WHERE "random_num" NOT IN (SELECT menu_order FROM posts where post_type = 'my_cpt') limit 1 I would love to take the output of that statement and use it as the input for an update statement, but I can't figure out how to do that.
The second approach I found is this one, but it has failed in providing unique random numbers, i.e. there were already doubles after I ran it twice:
UPDATE posts SET menu_order = crc32(uuid()) % 1000 WHERE post_type='my_cpt'
Another question is if I can run an update query for new posts which creates a unique random number for posts of a specific post_type. How would I do that?