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/
Related
I am trying to build a table of Contact IDs (Primary Keys) of the most recently created records assigned to each Account of a certain type in our Salesforce org.
Working in Salesforce Marketing Cloud, I'm trying to build a sample list that I can setup to update automatically so the records I'm testing against are never stale. I only need one example from each account to do my testing. Since I want to make sure the record isn't stale, I want to select the most recent record assigned to each Account.
Every Contact is assigned to one and only one Account. The Account ID lives as a foreign key on the Contact Record. The created date of the Contact is also a field on the Contact record.
The Sample list needs to contain the email address, ContactID, and the name of the Management Company, which lives on the Account record.
I figured doing a directional JOIN toward the Account table would do the trick, but that didn't work. I figure that's because there's nothing distinguishing which record to pick.
This is what I've got for code, which is pretty useless...
SELECT
C.Email AS Email,
C.Id AS Id18,
C.AccountID AS AccountID,
A.Management_Company AS ManagementCompany
FROM
ENT.Contact_Salesforce_DE AS C
RIGHT JOIN ENT.Account_Salesforce_DE AS A ON C.AccountID = A.Id
WHERE
A.RecordTypeId = '1234567890ABCDEFGH' AND
A.Management_Company IS NOT NULL AND
C.Email IS NOT NULL
The syntax checks out, but I get a system error every time I run it.
Marketing Cloud runs on an older version of SQL Server, so some more recent query functions won't always work.
And yes, I'm a relative noob to SQL. Won't surprise me if this has a really simple solution, but I couldn't find another entry describing the solution, so...
If I followed you correctly, you want to pull out the latest contact associated with each account.
On database servers that do not support window function (which seems to be the case of your RDBMS), one typical solution is to add a special condition to the JOIN. This NOT EXISTS condition uses a subquery to ensure that the record being picked in the child table is the most recent one (in other words : there is no child record with a highest creation date than the one being joined) :
SELECT
c.Email AS Email,
c.Id AS Id18,
c.AccountID AS AccountID
FROM
ENT.Account_Salesforce_DE AS a
INNER JOIN ENT.Contact_Salesforce_DE AS c
ON c.AccountID = a.Id
AND c.email IS NOT NULL
AND NOT EXISTS (
SELECT 1
FROM ENT.Contact_Salesforce_DE AS c1
WHERE
c1.email IS NOT NULL
AND c1.AccountID = a.Id
AND c1.CreatedDate > c.CreatedDate
)
WHERE
A.RecordTypeId = '1234567890ABCDEFGH'
AND A.Management_Company IS NOT NULL
I have two queries I need in one table, and haven't been able to find results in searching.
In the first table there is a UserID, which is a number, along with what the actual user id is and user's name.
My issue is that in every other query the user is only referred to as this number. I'm needing help in how to translate this UserID value into the actual User's name in my other queries.
Table with User's ID and User's Name:
SELECT *
FROM [Table].[dbo].[User]
Table example where the user is only referred to as this number, along with all other tables:
SELECT *
FROM [Table].[LoginStatus]
You need to join the two tables:
SELECT u.[UserName], l.*
FROM [LoginStatus] l
JOIN [Users] u ON u.id = l.user_id
Sorry if that title is a bit convoluted... I'm spoiled by an ORM usually and my raw SQL skills are really poor, apparently.
I'm writing an application that links to a vBulletin forum. Users authenticate with their forum username, and the query for that is simple (selecting by username from the users table). The next half of it is more complex. There's also a subscriptions table that has a timestamp in it, but the primary key for these is a user id, not a username.
This is what I've worked out so far:
SELECT
forum.user.userid,
forum.user.usergroupid,
forum.user.password,
forum.user.salt,
forum.user.pmunread,
forum.subscriptionlog.expirydate
FROM
forum.user
JOIN forum.subscriptionlog
WHERE
forum.user.username LIKE 'SomeUSER'
Unfortunately this returns the entirety of the subscriptionlog table, which makes sense because there's no username field in it. Is it possible to grab the subscriptionlog row using the userid I get from forum.user.userid, or does this need to be split into two queries?
Thanks!
The issue is that you are blindly joining the two tables. You need to specify what column they are related by.
I think you want something like:
SELECT * FROM user u
INNER JOIN subscriptionlog sl ON u.id = sl.userid
WHERE u.username LIKE 'SomeUSER'
select * from user u JOIN subscriptions s ON u.id = s.id where u.username = 'someuser'
The bit in bold is what you want to add, it combines the 2 tables into one that you return results from.
try this
SELECT
forum.user.userid,
forum.user.usergroupid,
forum.user.password,
forum.user.salt,
forum.user.pmunread,
forum.subscriptionlog.expirydate
FROM
forum.user
INNER JOIN forum.subscriptionlog
ON forum.subscriptionlog.userid = forum.user.userid
WHERE
forum.user.username LIKE 'SomeUSER'
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
I have a simple table that logs simple events an administrator does. Nothing complicated.
One of the columns is userid, so I can reference the user's name from the users table:
SELECT u.username FROM `users` u, `history` h WHERE u.userid = h.userid
My issue is that the internal system also logs events (just like a user), but there is no userid related to the internal system. It is simply logged as zero, in the record.
Is there a way to modify the query to reflect this? I've tried a LEFT JOIN, but that doesn't let me specify "system" as the username. The other thing i can do is enter a new user into the user's table, and call it "Internal System". But I really don't want to do that.
Is it possible to do this from the query level?
Use:
SELECT COALESCE(u.username, 'SYSTEM') AS username,
FROM HISTORY h
LEFT JOIN USERS u ON u.userid = h.userid
COALESCE will return the first non-NULL value, so if you LEFT JOIN onto USERS and username is NULL--then "system" or whatever you prefer will appear.