I have the following query
SELECT role_uuid FROM users WHERE email = 'email#domain.com'
I also have a roles table the following fields:
uuid
name
created_at
I'm hoping to have 1 query that gives lets me select the role by email and get the name and created_at field from the roles table.
I've tried things like this but I can't quite figure it out.
SELECT *
FROM ( SELECT * FROM users WHERE email = 'email#domain.com') AS A
JOIN ( SELECT * FROM roles WHERE uuid = A.role_uuid) AS B
WHERE A.role_uuid = B.uuid
You JOIN the two tables which gives you a table with all the fields from both source tables. Then you use WHERE to filter and SELECT to specify the fields that you want to be returned.
SELECT r.name, r.created_at
FROM users u JOIN roles r ON (u.role_uuid = r.uuid)
WHERE u.email = 'email#domain.com'
If you run into naming conflicts because of fields from both tables sharing the same name you can use AS to define fieldnames for the output columns:
SELECT r.name AS rolename, u.name AS username, r.created_at
FROM users u JOIN roles r ON (u.role_uuid = r.uuid)
WHERE u.email = 'email#domain.com'
Related
I have a situation where each of the clients has users and each user can access to information about one or more branches.
We also have sys admins who can see everything and in database don't have any sites assigned to them. It just says the user is sys admin, so our system does not restrict the access.
I need to make a database query where I extract the list of branches the user has access to, but if the user is sys admin, I want to extract the list of all branches in the system.
I was trying something like this, but it does not work:
Select sites.name, sites.id
FROM sites
WHERE
sites.id IN (
CASE
WHEN (select u.level FROM users "u" WHERE u.username = 'JohnBrown') ='ROLE_SYSTEM_ADMIN'
THEN
(select id FROM sites)
ELSE
(select s2.id FROM users_have_sites uhs2
left join users u2 ON u2.id = uhs2.user_id
left join sites s2 ON s2.id = uhs2.site_id
where u2.username = 'JonhBrown')
END
)
I am getting this error:
ERROR: more than one row returned by a subquery used as an expression
I think something like this would work for you:
SELECT s.name, s.id
FROM sites s
LEFT JOIN users_have_sites uhs ON uhs.site_id = s.id
LEFT JOIN users u ON u.id = uhs.user_id AND u.username = 'JohnBrown'
WHERE (CASE WHEN (SELECT u.level FROM users WHERE u.username = 'JohnBrown') = 'ROLE_SYSTEM_ADMIN'
THEN TRUE ELSE FALSE END
OR u.id IS NOT NULL);
The LEFT JOINs do not filter out records from the sites table like an INNER JOIN would, so any site that meets either of the conditions in the WHERE clause will be in the result. This means that if your subquery shows that the user is a sys admind or if there is a record for that user and site is found in the users_have_sites table, those sites will be in the result set.
EDIT: Another fairly easy to read solution would be something like this:
SELECT s.name, s.id
FROM sites s,
users_have_sites uhs,
users u
WHERE u.username = 'JohnBrown'
AND (u.level = 'ROLE_SYSTEM_ADMIN'
OR (s.id = uhs.site_id AND u.id = uhs.user_id))
GROUP BY s.name, s.id;
The downside of this query is that it uses implicit joins which are not used very much any more. They are generally seen as an older way of doing things and can be less efficient. This will join all rows of on table to all rows of another table and then all of your filtering (and what you would generally think of as join conditions) are all in the WHERE clause. These typed of joins can be less efficient but this one should not be as the WHERE clause makes sure that only 1 result per site.
I think that this does what you want:
select s.name, s.id
from sites s
inner join users u on u.username = 'JohnBrown'
where
u.level = 'ROLE_SYSTEM_ADMIN'
or exists (
select 1
from users_have_sites uhs
where uhs.site_id = s.id and uhs.user_id = u.id
)
Here is another version of the query that you may find easier to follow (I do):
select s.name, s.id
from users u
inner join sites s
on u.level = 'ROLE_SYSTEM_ADMIN'
or exists (
select 1
from users_have_sites uhs
where uhs.site_id = s.id and uhs.user_id = u.id
)
where u.username = 'JohnBrown'
I have two tables in Postgres database. In each table there is a column which represent same number. I have tried few join queries to join both tables with similar column numbers but none of them are giving me the expected output.
user_id column from Table 1 is equal to Id column in Table 2
How can join these two tables?
I have tried below and some other queries as well but it didn't get what I wanted
SELECT members.access_level, members.user_id FROM members INNER JOIN users ON members.user_id = users.id;
Tables columns looks like below,
Members table
id |access_level |source_id |user_id |type
Users Table
id |email |name |username
Query output should look as below:
username |name |email |access_level
SELECT u.username
, u.name
, u.email
, m.access_level
FROM users u
JOIN members m ON (u.id = m.user_id)
;
If you want users that are not included in the members table you can join with a LEFT JOIN
To address your question asked in the comments I believe you'd be looking for something like the following:
UPDATE members SET access_level = 'dev' WHERE access_level = '30';
This is assuming that the column is already of type text. Otherwise, you'll need to change the data type first using the following:
ALTER TABLE members
ALTER access_level SET DATA TYPE text;
SELECT users.*, members.user_id, members.acces_level
FROM members
LEFT JOIN users
WHERE users.id = members.user_id
I have 3 tables: Permissions, Roles, and RolePermissions. I would like to have a way to select Roles that are missing new rows in the Permissions table based on the RolePermissions table relationship to insert those values once new permissions are added.
I have had no luck finding how this can be done so that is why I'm asking here.
Table structure
Permissions | Roles | RolePermissions
------------------------------------------
Id | Id | Id
Name | Name | RoleId
| | PermissionId
Idea of sql but I know it's not correct:
-- Looking to be able to do something like
INSERT INTO RolePermissions (RoleId, PermissionId)
SELECT missingpermissions.PermissionId, missingpermissions.RoleId
FROM Permissions as p
INNER JOIN(
Select r.Id as RoleId, p.Id as PermissionId
FROM Role as r
LEFT JOIN RolePermissions as rp
ON r.Id = rp.RoleId
WHERE rp.PermissionId = p.Id
) as missingpermissions
ON p.id = missingpermissions.permissionid
Edited to format
You need to get your new permission and cross join all roles (to get all combinations of roles and new permissions).
INSERT INTO RolePermissions(RoleId, PermissionId)
SELECT r.ID AS RoleId,p.ID AS PermissionId
FROM Role r
CROSS JOIN (
--get all permissions currently not assigned to a role (presumably "new")
select p.*
from Permissions p
left join RolePermissions rp on p.id=rp.PermissionId
where rp.PermissionId is null
) p
I'm trying to get query like this:
SELECT * FROM `users` u JOIN clientdetails d WHERE u.id = d.id AND d.staff_id =?
so I wrote DQL:
SELECT u FROM PswAdminBundle:User u JOIN PswAdminBundle:ClientDetails d WHERE d.staffRep=?0
but resulting query is
SELECT * FROM users u0_ INNER JOIN ClientDetails c1_ ON (c1_.staff_id = ?)
May it be because these two tables have 2 relations between them?
In users table I keep all users of app(clients and staff) records representing clients have relation one to one with table clientdetails using id from both tables. In clientdetails I have column staff_id that goes back to user table pointing on record representing staff user.
I'm trying to fetch all clients that are related to staff.
I have a pretty simple SQL I need to perform.
I have a ProcessUser, Role and a ProcessUserRole table. A straight forward many-to-many
I want to select all ProcessUser's that does also have a Role of admin.
However my JPQL fails because my user also has role officer, so it is retrieved in the list.
Here is the JPQL:
entityManager.createQuery("SELECT p FROM " + ProcessUser.class.getName()
+ " p join p.roles role WHERE role.name NOT IN ('sysadmin')").getResultList();
The generated SQL is:
select
distinct processuse0_.id as id8_,
processuse0_.position as position8_,
processuse0_.username as username8_,
processuse0_.organization_id as organiza9_8_,
processuse0_.passwordHash as password4_8_,
processuse0_.fromEmail as fromEmail8_,
processuse0_.firstname as firstname8_,
processuse0_.lastname as lastname8_,
processuse0_.processes as processes8_
from
ProcessUser processuse0_
inner join
ProcessUserRoles roles1_
on processuse0_.id=roles1_.userId
inner join
Role role2_
on roles1_.roleId=role2_.id
where
(
role2_.name not in (
'sysadmin'
)
)
Proper JPQL syntax using subquery:
SELECT p FROM ProcessUser p
WHERE p.id NOT IN (
SELECT p2.id FROM ProcessUser p2
JOIN p2.roles role
WHERE role.name='sysadmin'
)
Will this work for you?
SELECT *
FROM ProcessUser
WHERE Exists
(
SELECT 1
FROM
ProcessUserRoles
INNER JOIN Roles
ON Roles.RoleId = ProcessUserRoles.RoleId
WHERE 1=1
AND ProcessUser.ProcessUserId = ProcessUserRoles.ProcessUserId
AND Roles.RoleDescription = 'Super User'
)
Your query is basicly bringing back a list of user/roles since your user has two roles he comes back twice, you filter out one row by excluding the role of 'sysadmin'. What it sounds like you want to do is exclude all users who have a role of 'sysadmin' regardless of they have other roles. You would need to add something to you query like. (I'm going by your query not your description)
where processuse0_.id not in
select ( userId from
ProcessUserRoles
inner join
Role
on ProcessUserRoles.roleId=Role.id
where role.name != 'sysadmin'
)
Run a nested query. First select all users with the role of sysadmin. Then select the complement of this, or all users that are not in this result.
JPQL:
TypedQuery<ProcessUser> query = em.createQuery("" +
" SELECT p FROM ProcessUser p " +
" WHERE p.roles.name <> ?1", ProcessUser.class);
query.setParameter(1, "sysadmin");
return query.getResultList;