Join Orders, Staff's first and last name, item and location MySQL - mysql

Question

Join Orders, Staff's first and last name, item and location into one so I can export the content into an Excel spreadsheet.
SELECT orders.order_id, staff.staff_id, staff.first_name, staff.last_name, items.name, locations.address1, locations.address2, locations.state, locations.zip_code, orders.created_at
FROM orders
INNER JOIN staff
ON orders.staff_id = staff.staff_id
INNER JOIN items
ON orders.item_id = items.item_id
INNER JOIN location_staff
ON location_staff.staff_id = staff.staff_id
INNER JOIN locations
ON location_staff.loc_id = location.loc_id
I am trying to gather this information to put into an excel document but my query is not returning any results. Any help would be appreciated.
Here is An ERD diagram for further understanding
https://www.dropbox.com/s/7inma4s42xq5t4a/ERD.jpg
(Location_staff_link was shortened when created to location_staff)

Answer 1

jsut remove the extra tables in your FROM clause,
SELECT orders.order_id,
staff.staff_id,
staff.first_name,
staff.last_name,
items.name,
orders.created_at
FROM orders
INNER JOIN staff
ON orders.staff_id = staff.staff_id
INNER JOIN items
ON orders.item_id = items.item_id
INNER JOIN locations
ON location.staff_id = staff.staff_id
To further gain more knowledge about joins, kindly visit the link below:
Visual Representation of SQL Joins

Answer 2

Nothing in your query looks bad, so here is what I suggest to find the answer in this sort of case.
First reduce to the bare minimum of the first join and change the fields to select * (temporarily, you can go back to the real fields as soon as you find the issue) so you can se all the data.
Do you get records, then add in any where clauses on the tables in that join. Do you still get records?
Then add in each join and each where clause one at a time until you find the one where the records disappear. This will tell you what you need to do to fix it.
Often in a case like this where no records are returned, one of the joins needs to be a left join or there is no data that meets the terms of the where clauses or one of the joins is improperly defined. And sometimes, there is a problem in that your database does not have the data you were expecting it to have. But first you have to use the process above to diagnose where the problem is.