I'm trying to get sql statement to link from one table to another and use a case (or if) if the user has accesslevel 1 then the statement should be select * from campaigns, whereas if ur not accesslevel 1 u should get the select statement as :
select * from campaigns WHERE campaign_Creator = ${user_ID}
SELECT * FROM campaigns
INNER JOIN users ON campaigns.CAMPAIGN_CREATOR = users.USER_ID
CASE WHEN users.USER_ACCESSLEVEL = 1
THEN SELECT * FROM campaigns
ELSE select * from campaigns WHERE CAMPAIGN_CREATOR = ${user_ID};
How would I go around creating such a statement? I've been trying to look it up but i just get more confused as to how to go around with this.
Perhaps this is what you want?
SELECT * FROM campaigns
INNER JOIN users ON campaigns.CAMPAIGN_CREATOR = users.USER_ID
WHERE users.USER_ACCESSLEVEL = 1
OR CAMPAIGN_CREATOR = ${user_ID};
I agree with the solution of our friend and complementing follow my suggestion.
SELECT *
FROM campaigns
INNER JOIN users ON campaigns.CAMPAIGN_CREATOR = users.USER_ID
AND (users.USER_ACCESSLEVEL = 1 OR (users.USER_ACCESSLEVEL != 1
AND CAMPAIGN_CREATOR = ${user_ID}))
Related
Hello I would like to retrieve the name and the first name in the user table thanks to the id contained in the message table (id_receive and id_send) in sql via a subquery
SELECT user.nom FROM user
WHERE user.id IN (
SELECT message.id_send, message.id_receive FROM message WHERE message.id=1
)
```
I would recommend using EXISTS, twice:
SELECT u.nom
FROM user u
WHERE EXISTS (SELECT 1 FROM message m WHERE m.id = 1 AND u.id = id_send) OR
EXISTS (SELECT 1 FROM message m WHERE m.id = 1 AND u.id = id_receive) ;
However, a JOIN might also be appropriate:
SELECT u.nom
FROM user u JOIN
message m
ON u.id IN (m.id_send, id_receive)
WHERE m.id = 1;
I suspect it isn't actually what you want but it looks like this is what you're trying to do:
SELECT user.nom FROM user
WHERE user.id IN (
SELECT message.id_send FROM message WHERE message.id=1
UNION ALL
SELECT message.id_receive FROM message WHERE message.id=1
)
The query that drives the IN should return a single column of values
Try and conceive that in works like this:
SELECT * FROM t WHERE c IN(
1
2
3
)
Not like this:
SELECT * FROM t WHERE c IN(
1 2 3
)
Nor like this:
SELECT * FROM t WHERE c IN(
1 2 3
4 5 6
)
It might help you reember that the query inside it must return a single column, but multiple rows, all of qhich are searched for a matching value c by IN
Small addition to your original query to make it working:
SELECT user.nom FROM user
WHERE user.id IN (
SELECT unnest(array[message.id_send, message.id_receive])
FROM message
WHERE message.id=1
)
Regarding the statement below, sltrxid can exist as both ardoccrid and ardocdbid. I'm wanting to know how to include both in the NOT IN subquery.
SELECT *
FROM glsltransaction A
INNER JOIN cocustomer B ON A.acctid = B.customerid
WHERE sltrxstate = 4
AND araccttype = 1
AND sltrxid NOT IN(
SELECT ardoccrid,ardocdbid
FROM arapplyitem)
I would recommend not exists:
SELECT *
FROM glsltransaction t
INNER JOIN cocustomer c ON c.customerid = t.acctid
WHERE
??.sltrxstate = 4
AND ??.araccttype = 1
AND NOT EXISTS (
SELECT 1
FROM arapplyitem a
WHERE ??.sltrxid IN (a.ardoccrid, a.ardocdbid)
)
Note that I changed the table aliases to things that are more meaningful. I would strongly recommend prefixing the column names with the table they belong to, so the query is unambiguous - in absence of any indication, I represented this as ?? in the query.
IN sometimes optimize poorly. There are situations where two subqueries are more efficient:
SELECT *
FROM glsltransaction t
INNER JOIN cocustomer c ON c.customerid = t.acctid
WHERE
??.sltrxstate = 4
AND ??.araccttype = 1
AND NOT EXISTS (
SELECT 1
FROM arapplyitem a
WHERE ??.sltrxid = a.ardoccrid
)
AND NOT EXISTS (
SELECT 1
FROM arapplyitem a
WHERE ??.sltrxid = a.ardocdbid
)
I have 3 tables. Users(id, fullname), Chats(id, name) and Chats_Participants(chatId, userId). I need to select all the chats in which user with specified id consists. For example:
Chats:
1. 1, 'Test'
Users:
1. 1, 'Test user'
2. 2, 'Test user2'
Chat_Participants:
1. 1(chatId), 1(userId)
2. 1(chatId), 2(userId)
As a result, I need something like this:
1(chatId) 'Test'(chatName) participants(array of users in chat)
First I've wrote this:
select chats.*, json_agg(users) as participants
from chats
inner join chats_participants c2 on chats.id = c2."chatId"
inner join users on c2."userId" = users.id
where users.id = $userId
group by chats.id;
but this query selects only one participant
You can try with array_agg in postgresql. Demo here. Users table is not linked here, printing user id from chat_participants table instead.
SELECT chats.chat_id,chats.name, array_agg(userid order by chats.chat_id)
FROM chats
INNER JOIN chat_participants ON chats.chat_id = chat_participants.chat_id
GROUP BY chats.chat_id,chats.name
You seem to want:
SELECT c.chat_id, c.name,
array_agg(cp.userid order by cp.user_id) as users
FROM chats c INNER JOIN
chat_participants cp
ON c.chat_id = cp.chat_id
GROUP BY c.chat_id, c.name
HAVING SUM( (cp.userid = $userid)::int ) > 0;
This returns only chats that have your user of interest.
Oracle 12.2
I have a SQL statement that is causing me issues. I am retrieving data from a table called BURNDOWN. If the user is an admin, they get to see all the data. If the user is NOT an admin, they are restricted to what they can see, based on some join conditions.
The issue I am running into is when the user is an ADMIN, I don’t need the other tables… subsequently, the JOIN condition is not relevant, so Oracle is deciding to do a cartesian join across everything…
How do I get around this so that is the user is an Admin, I only look at one table, else I look at all tables and include the join condition?
The example SQL is a contrived example, but it shows the issue.
Select
BURNDOWN.NAME,
BURNDOWN.ADDRESS,
BURNDOWN.STATE
from BURNDOWN, FILTER_A, FILTER_B, FILTER_C
Where
(
:ISAdmin = 1
Or
(
BURNDOWN.x=FILTER_A.x and
FILTER_A.y=FILTER_B.y and
FILTER_B.z=FILTER_C.z and
FILTER_C.user = :ThisUser
)
)
Use an EXISTS to see if the data exists in the FILTER tables without joining them in to the results.
select bd.*
from burndown bd
where ( :isadmin = 1 or
exists ( select 1
from filter_a a
inner join filter_b b on b.y = a.y
inner join filter_c c on c.z = b.z
where a.x = bd.x
and c.user = :ThisUser )
)
Presumably, you want:
select bd.*
from burndown bd
where :ISAdmin = 1 or
(exists (select 1 from FILTER_A a where bd.x = a.x) or
exists (select 1 from FILTER_B b where bd.y = b.y) or
exists (select 1 from FILTER_C c where bd.z = c.z)
);
I have an SQL query which can have around 1.5k of IDs OR'ed in the following form. They are the IDs of people I have and they are individually selectable, hence the many ORs when everyone is selected. Is it better to just SELECT everyone's ID then put it in the AND condition, UNION instead of OR, or perhaps use IN to bunch up all IDs, since the user may select everyone accept 1 person. Thanks.
...
AND (
(UserID = '53b95690-22d8-44a2-ad56-919cb4037218')
OR (UserID = '87b7fc0c-28f4-4f2e-9909-066df42245fa')
OR (UserID = '98c1b5e3-6ba5-4bd9-b8f5-d3b2221e3e3a')
OR...
EDIT: The complete query, as requested;
SELECT *
FROM Mail WITH (NOLOCK)
WHERE Active= 1
AND Company= '1d034e8b-0122-4531-8795-895d9287920f'
AND (
CompanyDivisionID= '129bcca1-b1d8-4a9e-8152-0b9e936c9d01'
OR CompanyDivisionID= '1bf4023d-22a3-4520-b751-7842576f42b7'
)
AND (
(DestinationUserID = '53b95690-22d8-44a2-ad56-919cb4037218')
OR (DestinationUserID = '87b7fc0c-28f4-4f2e-9909-066df42245fa')
OR (DestinationUserID = '98c1b5e3-6ba5-4bd9-b8f5-d3b2221e3e3a')
...
...
...
OR (DestinationUserID = '8c78fc05-7969-48fd-9b30-774e5d9a70bd')
OR (DestinationUserID = 'e7b76096-fe7d-44b8-9158-8293ac609471')
OR (DestinationUserID = '8a6b7385-4339-43fb-b95b-a7b687982bcd')
)
ORDER BY SendingDate DESC
Create a (temporary) table containing your selected UserIDs and join to that table.
SELECT *
FROM Mail WITH (NOLOCK)
inner join SelectedUsers on mail.DestinationUserID = SelectedUsers.UserID
WHERE Active= 1