I have a database with 3 tables:
Table 1 (Department) - This is a table with columns for departments and departmentID's
Table 2 (SecurityMap) - This is a table that maps rolenames to department ID's
Table 3 (customer info) - this is the info that is displayed to users based on their role memberships
I have all of the SELECT based on role functions working.
What I need is to figure out how to insert a specific value into the DepartmentID column within Table 3 by default, based on the users role membership. For instance, when someone is adding a new row to the database - in addition to the data they are supplying within the "add" form, I need a default value inserted into this column. If they are a member of the Marketing role, it should be a 1, if they are a member of the IT role, it should be a 2, etc...
Ideally, this would be done without any knowledge to the user that it is even happening. I would assume that I need to use an "Instead Of" trigger, but I have no idea how to proceed....
Shouldn't be too difficult:
In your app, keep track of the logged-in user and their role.
When your app saves the customer data, make sure it passes the database the role ID as well as the user-entered data (a stored procedure would be ideal here)
When the database processes the supplied data, it saves the role ID into the appropriate column.
this should work provided the rolename-column (or id) is unique in the securityMap-table otherwise the select could return more than one value, maybe you need to select the departmentId differently then.
insert into customer_info(otherdata, departmentId) values('data', (select departmentId from securityMap where rolename = 'userrole'))
Edit:
since you mentioned db_owner maybe this can help you (from http://www.sqlservercentral.com/Forums/Topic411310-338-1.aspx)
WITH CTE_Roles (role_principal_id)
AS
(
SELECT role_principal_id
FROM sys.database_role_members
WHERE member_principal_id = USER_ID()
UNION ALL
SELECT drm.role_principal_id
FROM sys.database_role_members drm
INNER JOIN CTE_Roles CR
ON drm.member_principal_id = CR.role_principal_id
)
SELECT USER_NAME(role_principal_id) RoleName
FROM CTE_Roles
ORDER BY RoleName;
you could join that with the SecurityMap-table to filter out roles like db_owner
Related
There are 5 objects: contact, account, account_contact__c, user, recordtype in Salesforce.
Below is the SQL query which needs to be converted to Salesforce SOQL query
SELECT c.id,c.fname,c.lname,u.name, ac.desc, r.date
FROM contact c
LEFT JOIN user u on c.oid =u.sfid
LEFT JOIN account_contact__c ac on c.sfid=ac.contact_id__c
LEFT JOIN account a on a.sfid=ac.account_id__c
LEFT JOIN recordtype r on a.recordtypeid =r.sfid and r.type=‘test’
I managed to join 2 objects but in the second table, I’m not able to add more than one field.
Select id,fname,lname
from contact
where id in (
select contact_id__c from account_contact__c
)
If I try to add another SELECT statement inside account_contact__c, I am getting an error.
We don't know all your relations, for example Contact-User. What do you need? Contact's Owner? Customer/Partner Community user created out of that contact? Created By/Last Modified by User?
And the Account_Contact__c table looks weird, why didn't you use standard AccountContactRelation. Or even normally go "up" from Contact to Account.
Something like this could work but it really depends on what you need. And wit your custom table - no promise this compiles, you might have different field names.
"related list style" - you start from contact, go "down" to your weird custom relationship, then "up" from that relationship to account.
SELECT Id, FirstName, LastName, Owner.Name,
(SELECT Id, Account__r.Id, Account__r.Name, Account__r.RecordType.Name)
FROM Contact
"normal style" - you start from your custom relationship table then go "up" to acc and con
SELECT Id,
Contact__r.FirstName, Contact__r.LastName, Contact__r.Owner.Name,
Account__r.Name, Account__r.RecordType.Name
FROM Account_Contact__c
I'm currently playing around with SQL and trying to find the best way to accomplish this:
I currently have a user table that has a user_id, organisation_id, registered_datetime. There are
a number of users in this table with different organisations. There may be 3 different users in
1 organisation, or 1 in 1 organisation, etc.
I have added a new column called admin_user and I am trying to string up an SQL statement together
to update the admin user column. There can only be one admin user per organisation, and I want
the user who registered the earliest for that organisation to be the admin.
I could do this manually but it would take time if I had a lot of users. What would be the best
way to accomplish this?
EDIT:
So I have a number of users like this with the columns. The ones highlighted are the users that has registered the earliest. I want to be able to set those users as an admin user. The only admin user within their organisation and set the rest to 0. 1 (Admin) 0 (Not Admin)
This SQL query will mark users which registered_datetime are lowest in its organisation_id as admin.
UPDATE users SET admin_user = 1
WHERE user_id IN (
SELECT u.user_id FROM users u
WHERE u.registered_datetime IS NOT NULL AND NOT EXISTS(
SELECT 1 FROM users iu
WHERE iu.organisation_id = u.organisation_id AND iu.registered_datetime < u.registered_datetime
)
)
You might want to update all users to admin_user = 0 before this code, so all your users will have their values set.
One caveat here, if two users in one organisation were registered in exact same time, then both of them will be marked as administrators.
Update
I have added u.registered_datetime IS NOT NULL into the WHERE clause to filter out users with NULL in registered_datetime.
MSSQL
In MsSql server I usually solve this problem a in another way, by using ROW_NUMBER():
WITH base AS (
SELECT user_id, ROW_NUMBER() OVER ( PARTITION BY organisation_id ORDER BY registered_datetime ASC ) AS rn
FROM user
WHERE registered_datetime IS NOT NULL
)
UPDATE user SET is_admin = 1
WHERE user_id IN (
SELECT base.user_id FROM base WHERE rn = 1
)
This is too long for a comment.
You are describing three different tables:
Users
Organizations
UserOrganizations
The last has one row per user and per organization. This provides the mapping between the two. This can be called a "mapping" table, "junction" table, or "association" table.
How you implement one admin per organization depends on the database you are using.
You do not need the admin_user column. You need a column isadmin.
When a user is registered, if he is the first in the organization, then the isadmin column has the value 1, otherwise 0
Also, you can use the AAA query to find the administrator
SELECT `table`.`user_id`, MIN(`table`.`registered_datetime`) WHERE `organisation_id`=...
I am trying to create a query that will return through DAO whether the inputted username and password is correct. I'm using java for DAO implementation as well as JSF.
I have the following tables:
LOGIN: username (pk)
BUSINESS: username (fk), password
CUSTOMER: username (fk), password
What I'm trying to do is create multiple joins so that when a user goes to log in, their stored username defines what type of account they have. By pulling the username, the username is looked for in both the BUSINESS and CUSTOMER and when found, the password is then compared. I tried the following statement:
SELECT l.USERNAME
FROM ITKSTU.BUSINESS b
JOIN ITKSTU.LOGIN l
ON l.USERNAME=b.USERNAME
JOIN ITKSTU.CUSTOMER c
ON c.USERNAME=l.USERNAME
WHERE l.USERNAME='user111' AND (b.PASSWORD='aaa' OR c.PASSWORD='aaa');
Yet it returns nothing. Any possible suggestions?
I have replicated the same here and it looks like it is working. Could you check?
http://sqlfiddle.com/#!2/f253d/2
Thanks
If I understood correctly, what you need is to distinguish a user's type, whether he/she is in business table or customer table. Then, check the password correctness.
Then, again if I am not wrong, you should have an entry for all users in login table, then each one of them should take place EITHER in businees OR customer table.
Let's assume we have records such as:
INSERT INTO login VALUES ('TEST');
INSERT INTO login VALUES ('TEST2');
INSERT INTO business VALUES ('TEST','PASSWORD123');
INSERT INTO customer VALUES ('TEST2','PASSWORD1234');
I think you may solve the problem with the following query. Let's test with the user named "TEST2":
SELECT b.username AS business_user, c.username AS customer_user
FROM login l
LEFT JOIN business b ON b.username = l.username
LEFT JOIN customer c ON c.username = l.username
WHERE l.username = 'TEST2' AND (b.password = 'PASSWORD1234' OR c.password = 'PASSWORD1234');
This query will return 2 columns as you notice: first one will return null as the user is not in business table. The second one will give you the username and label it as "customer_user". Therefore, if you check each column and determine which one is null, then you will know where the user actually belongs to (either to business or customer table).
The trick here is to begin with login table ("FROM login") and use LEFT JOIN, instead of JOIN. Here is a quick tip about joins and their differences, if you need it: http://www.firebirdfaq.org/faq93/
I have been asked to develop a query on Postgresql 9.2, which I have only limited exposure to, that will return a users information (from the users table) along with their roles (from the role table - a user may have many roles) in a single row. What I have is:
[user table] --> [user_role table] <-- [role table]
users table: id, firstname, lastname, username, ... ;
user_role table: id, user_id (fk to user);
role_id (fk to role); role table: id, name;
What I need to get is:
users.firstname, users.lastname, users.username, users....(other user info),
role.name, role.name (one role name for each role a user has).
Something like this, I expect:
SELECT u.id, u.firstname, u.lastname, array_agg(r.name)
FROM user u
LEFT OUTER JOIN user_role ur ON (u.id = ur.user_id)
LEFT OUTER JOIN role r ON (ur.role_id = r.id)
GROUP BY u.id;
You might want string_agg instead of array_agg depending on desired output format.
It's untested since you didn't provide sample data. If you're on an old PostgreSQL version you will need to explicitly specify every column of user that appears in the SELECT list in the GROUP BY list too.
Note that the roles are returned in a single column. That's necessary; there's no support for dynamic width tables where different rows can have different widths. You can use pretty much any format you like for the result - delimited text, xml, json, hstore, array, etc.
Your user_role.id column is completely unnecessary and should probably be replaced with PRIMARY KEY(user_id, role_id) unless you're dealing with stupid ORMs that can't cope with composite primary keys.
The query I am trying to perform is
With getusers As
(Select userID from userprofspecinst_v where institutionID IN
(select institutionID, professionID from userprofspecinst_v where userID=#UserID)
and professionID IN
(select institutionID, professionID from userprofspecinst_v where userID=#UserID))
select username from user where userID IN (select userID from getusers)
Here's what I'm trying to do. Given a userID and a view which contains the userID and the ID of their institution and profession, I want to get the list of other userID's who also have the same institutionID and and professionID. Then with that list of userIDs I want to get the usernames that correspond to each userID from another table (user). The error I am getting when I try to create the procedure is, "Only one expression can be specified in the select list when the subquery is not introduced with EXISTS.". Am I taking the correct approach to how I should build this query?
The following query should do what you want to do:
SELECT u.username
FROM user AS u
INNER JOIN userprofspecinst_v AS up ON u.userID = up.userID
INNER JOIN (SELECT institutionID, professionID FROM userprofspecinst_v
WHERE userID = #userID) AS ProInsts
ON (up.institutionID = ProInsts.institutionID
AND up.professionID = ProInsts.professionID)
Effectively the crucial part is the last INNER JOIN statement - this creates a table constituting the insitutionsids and professsionids the user id belongs to. We then get all matching items in the view with the same institution id and profession id (the ON condition) and then link these back to the user table on the corresponding userids (the first JOIN).
You can either run this for each user id you are interested in, or JOIN onto the result of a query (your getusers) (it depends on what database engine you are running).
If you aren't familiar with JOIN's, Jeff Atwood's introductory post is a good starting place.
The JOIN statement effectively allows you to explot the logical links between your tables - the userId, institutionID and professionID are all examples of candidates for foreign keys - so, rather than having to constantly subquery each table and piece the results together, you can link all the tables together and filter down to the rows you want. It's usually a cleaner, more maintainable approach (although that is opinion).