I have a database table with the following information :
owner.primaryitowner,
owner.secondaryitowner,
owner.primarybusinessowner,
owner.secondarybusinessowner
The issue, is the owners are only stored as emails. There is another table I normally inner join users on users.username = owner.primaryitowner to get users.displayname so the data reads correctly. The issue is I need to do this for all 4 columns, and when I can only figure out how to connect 1 column in a query. Thanks for the help
P.S. I cannot change the database I am only a report writer.
Assuming you want all the display name for all owners, try something like this:
select u.displayname
from users u
inner join owners o on
o.primaryitowner = u.username
or o.secondaryitowner = u.username
or o.primarybusinessowner = u.username
or o.secondarybusinessowner = u.username
Related
i'm a beginner on MYSQL db and i'm trying to play around with the query and relations.
i have created 2 tables, one is 'users' which contain the field staff_ID and the other is 'reports' which also contain the table field staff_ID of the user submitting the reports.
on the relations (see picture) i have connect the 2 staff id field.
every user can submit more than one reports, so i'm try to query and get only the reports of one users(staff_ID).
I understood i have to use the JOIN keyword in order to obtain the data..
i tried the following query but it gave me all the result for all the users.
SELECT u.staff_ID
, u.Name
, r.id_report_show
, r.date_report
FROM users u
JOIN reports r
ON r.staff_ID = u.staff_ID
but I would like to have the report only of one specific user like staff_ID = 04033
probably i understood wrong how this query JOIN work, i'm looking for some help.
Thanks
You are almost there. Your join is perfect. You just need a where clause.
SELECT users.staff_ID, users.Name, reports.id_report_show, reports.date_report
FROM `users` INNER JOIN reports ON reports.staff_ID = users.staff_ID
where users.staff_ID = 04033
Or you can also mention it within on clauses:
SELECT users.staff_ID, users.Name, reports.id_report_show, reports.date_report
FROM `users` INNER JOIN reports
ON reports.staff_ID = users.staff_ID and users.staff_ID = 04033
Since it's inner join both the query will produce same output. But for left join those might produce different result. It's a good practice to use where clause instead of mentioning the condition in on clause.
I'm completely new to mongoDB, and wondering if it's even possible to query something like this in the mongo language:
SELECT
stg.emp_user_id as emp_user_id,
stg.mgr_user_id as mgr_user_id,
stg.emp_email as emp_email,
stg.employeetype as employeetype,
s.shift_start_time as shift_start_time,
s.shift_end_time as shift_end_time,
s.days_worked as days_worked,
s.num_employees as num_employees,
FROM(
#nested table to link the employee to the manager, based on employee email
SELECT
u.userid as emp_user_id,
p.userid as mgr_user_id,
u.email as emp_email,
u.employeetype as employeetype,
FROM Users u
LEFT JOIN Peoples p on u.email = p.email) stg
#bring in shifts table linked to mgr, now that we have mgr-emp relationship
LEFT JOIN shifts s ON stg.mgr_user_id = s.user_id;
I've been looking around and have been able to find simple conversion references (querymongo.com, stackoverflow examples, etc), but haven't found anything for joins and nested tables. Any help/direction would be appreciated!
I'm writing what is a pretty simple 2-step SQL Query.
I have one table called Users and another called ProfileCharacteristics.
**Users Table:**
UserId [PK]
UserName
**ProfileCharacteristics Table:**
UserId [FK]
.....(other data)
I'm trying to get access to (other data), but I only have the UserName available. So what I'm presently doing is running one SQL Query that matches the UserName to the UserId and stores the UserId value.
Then, I'm pulling all values that match to UserId in ProfileCharacteristics in a separate query. I have a gut feeling that I could combine these two queries into one, but I'm not sure how.
Any pointers?
EDIT: The start of a JOIN?
SELECT * FROM ProfileCharacteristics
INNER JOIN Users
ON ....
What you're looking for is an INNER JOIN:
SELECT pc.*
FROM ProfileCharacteristics pc
JOIN Users u ON pc.UserId = u.UserId
WHERE U.UserName = 'someuser'
A Visual Explanation of SQL Joins
I have two tables. One is a table of users with a unique id field, and the other is a table of data, with a column that holds the user id of whoever generated that piece of data.
I want to do something like SELECT data,genned_by FROM datatable; but I want to replace the results for genned_by with SELECT username FROM users WHERE id = genned_by
So that the results from the query changes the userid into a username that corresponds with the other table.
I did some research and figured INNER JOIN might be what I'm looking for, but I'm left very unsure of how to use it after reading it. Help?
Try to use
SELECT d.data, u.username FROM database d INNER JOIN user u ON u.id=d.genned_by
Hope it helps you
SELECT datatable.data,users.username
FROM datatable, users
WHERE users.id = datatable.genned_by
I'm a beginner in queries and I'm struggling with one of them. Here are the two tables involved :
The askstobefriends table permit a user to add a friend in the application I m developping. The relational form of it is :
AskToBeFriends(ID (long), #UserAsker (long), #UserAsked (long), Accept (tinyInt))
So with this table we can see who asked to be friend and if it was accepted ...
The query I m trying to realize would permit to list all the user's friends from his ID and also return the friendship statut (accept field ==> waiting for an answer, accepted or refused).
Speretaly, it would be something like that :
SELECT Accept, UserAsker, UserAsked
FROM askstobefriends
WHERE UserAsker = '".$userID."' OR UserAsked = '".$userID."' ";
==> first issue : it can either be the user who asked to be friend with someone or the opposit, that why i've put and OR. After that, I d like that for everyfriend founded there's these informations :
SELECT colUserID, colUserLogin, colUserName, colUserFirstname
FROM userTable
WHERE colUserID == FRIEND
So I guess I need to do a join query, and in my join I have to be sure that I'm using the right foreign key from the asktobefriends tablefor each cases !! (once the key could be UserAsked and another time UserAsker depending on who asked to be friends :S )
Does anyone have a clue please :S ?? Thanks ;-) !!
Your design is wrong. A User asks to be friend of another User, so "Ask_to_be_friend" is the relation, and the cardinality is many to many, so the design will looks like this:
User_User_ID is UserAsker.
User_USer_ID1 is UserAskedtobefriend
and the query could be like (you'll get all the users that user_user_ID Asks to be friend of):
Select U.* from User as U
Join Ask_to_be_friend as A on
U.user_ID = A.User_user_ID
--where a.accept=1 if you add this, this will give
--you all the friends ID of the user_ID table User
If you want to get the names or extra info of the askedtobefriend you'll need a extra Join
Select U.* from User as U
Join Ask_to_be_friend as A on
U.user_ID = A.User_user_ID
Join User as U2 on
A.User_User_ID1=u2.User_ID
--where a.accept=1 ,with this you'll with get only the friends
You could join the tables using criteria that ensure only friends of :userID are returned. For example:
SELECT u.*, a.Accept
FROM askstobefriends a JOIN userTable u ON (:userID, u.colUserID) IN (
(a.UserAsker, a.UserAsked),
(a.UserAsked, a.UserAsker)
)