i came into a situation where i want to select rows which meets within some date.
i am using oracle and my query looks like :-
Query
SELECT d.id,d.ADVERTISEMENTCODE,d.LASTDATEOFFORMSUBMISSION,e.LASTDATEFORFORMSUBMISSION,
d.studentMasterId FROM CANDIDATEAPPEARAGAINSTADVTCODE d LEFT OUTER JOIN ADVERTISEMENTCODE e
ON d.ADVERTISEMENTCODE = e.ADVERTISEMENTCODE WHERE paymentStatus='Pending'
and studentMasterId='8670' and
TO_DATE(e.LASTDATEFORFORMSUBMISSION,'dd/mm/yyyy')+4 > TO_DATE('11/05/2017','dd/mm/yyyy');
this is a running query and it returns exactly what i want.
but now i want to do it with hibernate query language. how can it be done?
Related
I am using jpa native query , but its not returning values from salias it returns values from S
Query query = em.createNativeQuery("Select S.\"MESSAGE\",S.\"DESTINATION\",S.\"SENT_DATE\",S.\"CLIENT_TRACKING_ID\",S.\"MESSAGE_COST\",S.\"sTId\",salias.\"STATUS\",salias.timeDate from \"sent_sms_view\" S left join ( Select Distinct on (\"SMS_ID\") R.\"SMS_ID\",R.\"STATUS\",R.timeDate from \"sms_receipt_view\" R Order By R.\"SMS_ID\",R.timeDate Desc)As salias on S.\"SYSTEM_TRACKING_ID\"=salias.\"SMS_ID\" where S.Id_systemUser=:systemUser and S.\"CLIENT_TRACKING_ID\"=:cTId");
query.setParameter("cTId", cTId);
query.setParameter("systemUser", systemUser);
if (query.getResultList().size() > 0){
List<Object> resultat = query.getResultList();
This is the Postgres query and it works fine
Select S."MESSAGE",S."DESTINATION",S."SENT_DATE",S."CLIENT_TRACKING_ID",S."MESSAGE_COST",S."sTId" ,salias."STATUS",salias.timeDate
from "sent_sms_view" S
left join ( Select Distinct on ("SMS_ID") R."SMS_ID",R."STATUS",R.timeDate from "sms_receipt_view" R Order By R."SMS_ID",R.timeDate Desc)As salias
on S."SYSTEM_TRACKING_ID"=salias."SMS_ID"
where S.Id_systemUser='101' and S."CLIENT_TRACKING_ID" ='abda';
Can anyone tell me what i am doing wrong.
I'm only guessing what you might be trying to do, since you haven't told us, but here's how I'm guessing it should probably look like:
SELECT S."MESSAGE", S."DESTINATION", S."SENT_DATE", S."CLIENT_TRACKING_ID", S."MESSAGE_COST", S."sTId", salias."STATUS", salias.timeDate
FROM "sent_sms_view" S
INNER JOIN "sms_receipt_view" AS salias on (S."SYSTEM_TRACKING_ID" = salias."SMS_ID")
WHERE S.Id_systemUser=:systemUser AND S."CLIENT_TRACKING_ID"=:cTId
However I don't see why you would have numerical IDs, such as Id_systemUser stored as strings. In fact that variable name indicates horrible database design. CamelCasing combined with underscores is something you must categorically avoid.
And you must never call query.getResultList() twice if you're looking for the same results. Simply store the List to a local variable and then use it.
In my Java Web application I use Postgresql and some data tables are filled automatically in server. In the database I have a STATUS table like below:
I want to select the data related to a vehicle between selected dates and where the vehicle stayed connected. Simply I want to select the data which are green in the above table which means I exactly want the data when firstly io1=true and the data when io1=false after the last io1=true. I have postgresql query statement which exactly gives me the desired data; however, I have to convert it to HQL because of my application logic.
working postgresql query:
WITH cte AS
( SELECT iostatusid, mtstrackid, io1,io2,io3, gpsdate,
(io1 <> LAG(io1) OVER (PARTITION BY mtstrackid
ORDER BY gpsdate)
) AS status_changed
FROM iostatus
WHERE mtstrackid = 'redcar' AND gpsdate between '2014-02-28 00:00:00' and '2014-02-28 23:59:59'
)
SELECT iostatusId, mtstrackid, io1, io2, io3,gpsdate
FROM cte
WHERE status_changed
OR io1 AND status_changed IS NULL
ORDER BY gpsdate ;
How should I convert the above query to HQL or how could I retrieve the desired data with HQL?
The goal of hibernate is mapping database entities to java objects. This kind of complex queries are not entities themselves. This is against the spirit of hibernate.
If this query generates an entity in your application logic, I recommend putting the results into a table and applying Hibernate queries to that table.
If this query generates some kind of aggregation or summary, there are two possible ways:
One way is you compute this aggregation/summary in your application after retrieving entities from iostatus table with hibernate.
If this query has nothing to do with your application logic then you can use Native SQL interface of Hibernate and execute the query directly. (You can even use JPA if you are willing to manipulate two database connections.)
If you absolutely need to convert it to HQL, you need to eliminate the partition function. If the order of iostatusId is identical to the order of gpsdate, you can do it similar to
SELECT i2.*
FROM iostatus i1
INNER JOIN iostatus i2 ON i1.iostatusId = i2.iostatusId - 1
AND i1.io1 <> i2.io1
AND i1.mstrackid = i2.mstrackid
WHERE i2.mtstrackid = 'redcar' AND
i2.gpsdate between '2014-02-28 00:00:00' and '2014-02-28 23:59:59'
If gpsdate is no way related to iostatusId then you need something like
SELECT i2.*
FROM iostatus i1
INNER JOIN iostatus i2 ON i1.gpsdate < i2.gpsdate
AND i1.io1 <> i2.io1
AND i1.mstrackid = i2.mstrackid
WHERE i2.mtstrackid = 'redcar' AND
i2.gpsdate between '2014-02-28 00:00:00' and '2014-02-28 23:59:59' AND
NOT EXISTS (SELECT * FROM iostatus i3
WHERE i3.gpsdate > i1.gpsdate AND
i2.gpsdate > i3.gpsdate AND
i3.io1 = i1.io1 AND
i1.mstrackid = i3.mstrackid)
I guess both of the queries can be converted to HQL, but I'm not positively sure.
By the way I must warn you that, these methods might not perform better then finding the changes in your application, because they involve joining the table onto itself, which is an expensive operation; and the second query involves a nested query after the join, which is also quite expensive.
How would represent the following Oracle SQL in Hibernate HQL.
select table_num
, room_id
, min(event_type) keep(dense_rank first order by changed_on desc)
from room_history
group by table_num, room_id;
The idea behind the query is to order the table "room_history" by "changed_on" datetime column and then group it by "table_num" and "room_id" pairs whilest keeping the first "event_type" for each group. The mentioned query works for Oracle but I have trouble converting it into HQL.
Purpose is to get the latest "event_type" for "table_num" and "room_id" pair.
It seems this is not achievable
I ended up converting the following SQL query instead. It is not perfect but it does the job for my purposes.
select table_num, event_type et from room_history where id in (select max(id) from privacy_history group by msisdn);
I was able to do this assumptions since when for this table always a.id > b.id then also a.changed_on> b.changed_on.
I am trying to get distinct values from table application based on the column entry_id. I've managed to get this working with plain SQL:
SELECT DISTINCT ON (a.entry_id) a.* FROM application AS a
JOIN entry AS e ON e.id = a.entry_id
WHERE e.valid_until BETWEEN ? AND ?;
The problem is, I have to translate it to HQL. Is there any way to resolve it in HQL without Criteria API?
It looks like this feature has been requested a long time ago but is still unresolved.
I need to us a sql query in java that has an IN clause in it. I have seen suggestions for doing this when the IN clause is a predetermined set, such as numbers which won't work in this case because the set will be dynamic. Here is what I am trying to do:
select c.cust_name
from cust_acct c, has h
where c.cust_id=h.cust_id
and h.sh_add in (select a.sh_add from address a where sh_st='VA')
I do not get any faults. That is, the code runs I just get no results for this particular query
Have you checked that you are getting the right intermediate results from select a.sh_add from address a where sh_st='VA'?
You could just rewrite the query as:
select c.cust_name
from cust_acct c
inner join has h
on c.cust_id=h.cust_id
inner join address a
on h.sh_add = a.sh_add
where a.sh_st = 'VA'