I am trying to implement a "if exists, update, otherwise, insert" data access method in NHibernate. My database is Oracle 10g.
I am getting this "could not execute native bulk manipulation query" error when try to run this code, if I run the insert or update individualy, it works just fine.
Thanks!
string sql = #"DECLARE
CntOfRow Number(10,0);
BEGIN
SELECT count(*)
INTO CntOfRow
FROM Table1
WHERE
QueID=:QueID
IF CntOfRow=0 THEN
INSERT INTO Table1 ...;
ELSE
UPDATE Table1 ... ;
END IF;
END;";
INHibernateSession session = NHibernateSessionManager.Instance.Session;
try
{
session.BeginTransaction();
ISQLQuery query = session.GetISession().CreateSQLQuery(sql.Replace(System.Environment.NewLine, " "));
query.SetParameter("QueID", queID);
query.ExecuteUpdate();
session.CommitTransaction();
}
catch (Exception ex)
{
session.RollbackTransaction();
throw;
}
I don't know why you get that error, but you could try this simpler PL/SQL block instead:
BEGIN
INSERT INTO Table1 ...;
EXCEPTION
WHEN DUP_VAL_ON_INDEX THEN
UPDATE Table1 ... ;
END;";
You seem to be missing an ; after the SELECT
This link might also be of interest to you.
As about inserting/updating, see MERGE statement. It works like this:
MERGE INTO t1 dest
USING (SELECT 1 pk, 11 i FROM dual) src
ON (dest.pk = src.pk)
WHEN NOT MATCHED THEN INSERT (dest.pk, dest.i) VALUES (src.pk, src.i)
WHEN MATCHED THEN UPDATE SET dest.i = src.i;
Also see this topic
Go to an Oracle client like Toad or SQL Editor and try to execute the procedure with the same parameters that you send through Hibernate.
In my case, Oracle was throwing an error like:
11:50:57 ORA-01403: no data found
The cause was a select inside of procedure/function. Then improve the procedure/function to catch these exceptions.
Related
Does Oracle ~>12 support generated keys using a Merge statement? Some sudo code..
MERGE INTO TARGET_TABLE TRG
USING (SELECT CAST(? AS NUMBER) AS ID FROM DUAL) SRC
ON (TRG.ID = SRC.ID)
WHEN MATCHED THEN UPDATE SET....
WHEN NOT MATCHED THEN
INSERT(ID....)
VALUES(MYSEQ.NEXTVAL...)
The prepared statement is set up;
try (PreparedStatement pstmt =
connection.prepareStatement(
loadStatement(sqlName, connection, getClass()), new String[] {ID})) {
...
int inserted = pstmt.executeUpdate();
ResultSet rs = pstmt.getGeneratedKeys();
List<Long> keys = new ArrayList<>(inserted);
while (rs.next) {
rs.getLong(1);
}
return keys;
...
I have in-memory tests where the connection uses the H2 driver running the very same SQL and PreparedStatment and that returns the generated key just fine, but Oracle does not.
Reviewing the docs it would suggest it does not?
Thanks!
In mongoDB i remember there is a findOneAndUpdate query. Do we have or atleast can we create a query in oracle sql that only updates record if it exists otherwise will return a no data found message? I tried this query below however it updates all the record when a result is found:
UPDATE
user
SET
fname=:lname,
lname=:fname
WHERE
EXISTS (
SELECT * FROM user WHERE id=:id
)
Wouldn't it be just
update t_user set
fname = :lname,
lname = :fname
where id = :id;
It won't return an error if nothing's being updated, though, so - if it is actually a PL/SQL procedure, you'll have to check it yourself, e.g. (right behind the above UPDATE statement):
if sql%rowcount = 0 then
dbms_output.put_line('No rows have been updated');
end if;
I'm trying to implement Oracle triggers for child views but I need to be able to join the child views to their parents in order to do a role permission check.
In SQL Server I'm able to stuff like this:
ALTER TRIGGER [dbo].[ASetTrt_I] ON [dbo].[UCV_ASet_TRT]
INSTEAD OF Insert AS
BEGIN
SET NOCOUNT ON;
IF EXISTS (SELECT 1 from INSERTED i INNER JOIN [Analysis_Sets] p on i.[key] = p.[ID]
WHERE ([dbo].IsMemberOf(p.[UpdateRole]) <> 1 and [dbo].IsMemberOf('db_owner') <> 1))
RAISERROR ('Update failed due to insufficient permission',11,1)
INSERT INTO [Set_Trts] ( [ID], [Name], [key], [f_lTreatmentKey], [f_lOrder] )
SELECT
inserted.[ID], inserted.[Name], inserted.[key], inserted.[f_lTreatmentKey], inserted.[f_lOrder]
FROM inserted
INNER JOIN [Sets] parentT
on inserted.[key] = parentT.[ID]
WHERE (([dbo].IsMemberOf('db_owner')=1) or ([dbo].IsMemberOf(parentT.[UpdateRole])=1))
END
Is there anything I can do in Oracle to replicate the join functionality?
I've tried selecting from :New the way that SS selects from inserted but that doesn't seem to work..
Thanks.
You don't need to join. The:new pseudorow is just available and can be referenced like a record type. It isn't a table-like structure, and is only available in a for each row trigger. So your insert would be something like:
INSERT INTO Analysis_Set_Trts ( ID, Name, f_lAnalysisSetKey, f_lTreatmentKey,
f_lOrder )
SELECT :new.ID, :new.Name, :new.f_lAnalysisSetKey, :new.f_lTreatmentKey,
:new.f_lOrder
FROM Analysis_Sets parentT
WHERE parentT.ID = :new.f_lAnalysisSetKey
AND ((IsMemberOf('db_owner')=1) or (IsMemberOf(parentT.UpdateRole)=1));
... although not quite sure what the last line is doing or what the equivalent is.
This is the query. How to replace SELECT INTO statement with a cursor?
I'm newbie in Oracle
Thanks for your help
SELECT CEQ_LISTE_TYPE_QUESTIONS.ID_LISTE_TYPE_QUESTION
INTO vintIdListeTypeQuestion
FROM CEQ_FORMULAIRES
inner join CEQ_LISTE_TYPE_QUESTIONS
on CEQ_LISTE_TYPE_QUESTIONS.ID_LISTE_TYPE_FORMULAIRE=CEQ_FORMULAIRES.ID_TYPE_FORMULAIRE
AND CEQ_LISTE_TYPE_QUESTIONS.WEBCODE='ITEM_BETA_LACTAMASE'
WHERE CEQ_FORMULAIRES.ID_FORMULAIRE=to_number(out_rec.ID_FORMULAIRE)
and ceq_formulaires.date_inactive is null;
The error tells you that the query returns more than 1 row, so you should determine which row you need. Here an example how to fetch the most recent row based on a date field I thought up in ceq_list_type_questions "some_date".
select max(q.id_liste_type_question) keep (dense_rank last order by q.some_date) into vintidlistetypequestion
from ceq_formulaires f
join ceq_liste_type_questions q on q.id_liste_type_formulaire = f.id_type_formulaire
where f.id_formulaire = to_number(out_rec.id_formulaire)
and f.date_inactive is null
and q.webcode = 'ITEM_BETA_LACTAMASE'
Well, if you want to process your multiple rows in a loop, it's as simple as
BEGIN
FOR curs IN (SELECT ceq_liste_type_questions.id_liste_type_question
FROM ceq_formulaires
INNER JOIN ceq_liste_type_questions ON ceq_liste_type_questions.id_liste_type_formulaire=ceq_formulaires.id_type_formulaire
AND ceq_liste_type_questions.webcode = 'ITEM_BETA_LACTAMASE'
WHERE ceq_formulaires.id_formulaire = TO_NUMBER(out_rec.id_formulaire)
AND ceq_formulaires.date_inactive IS NULL)
LOOP
DBMS_OUTPUT.PUT_LINE(curs.id_liste_type_question); -- do what you need to do
END LOOP;
END;
/
But, as BazzPsychoNut mentions, if it's a requirement that your SQL return/operate on a single row, you'll need to modify your query to meet that requirement.
I dont want to use the "loop" related keyword, how can I implement loop with basic sql command in oracle ?
I have two table :
A:
ID, Color
B,
ID, AID, Type
I want to loop all records in B, and if ID = AID, then set the A.Color = B.Type
Thanks in advance !
Looping is, by definition, a procedural construct.
SQL is declarative: tell the database what you want done, not how to do it.
If you're absolutely convinced that you need to program such a thing, then write it in PL/SQL, Oracle's procedural language.
Bu I'm sure that it's possible to do what you want in SQL using an UPDATE with a WHERE clause.
Something like this (corrected per NullUserException):
UPDATE A SET A.Color = (SELECT B.Type FROM B WHERE A.ID = B.AID)
An alternate method:
MERGE INTO a
USING b
ON (b.aid = a.id)
WHEN MATCHED THEN UPDATE SET a.color = b.type;
You could just do:
UPDATE tablea a
SET a.color = (SELECT b.type
FROM tableb b
WHERE b.aid = a.id)
See this SQL script.
To do that you will have to write a stored procedure using PL/SQL. Here is the oracle page with some info and papers on the topic.
As others pointed out, you can probably solve your problem with a normal DML statement, without any looping involved. But to give you some basics on how to accomplish what you asked for in PL/SQL, here's an example...
DECLARE
CURSOR c IS
SELECT id, aid, type FROM b;
statement VARCHAR2(200);
BEGIN
FOR iterator IN c LOOP
IF iterator.id = iterator.aid THEN
statement := 'UPDATE a SET color = ' || iterator.type || 'WHERE id = ' || iterator.id;
EXECUTE IMMEDIATE statement;
END IF;
END LOOP;
END;
This anonymous PL/SQL block will iterate through each record in table b, and if b.id = b.aid, it will update table a and set a.color = b.type where a.id = b.id.
This seems to be what you were asking for. It's not exactly an efficient way to go about doing things, since you're firing off one DML statement per row in table b that has b.id=b.aid. But I wanted more to give this as a syntax example. This is just one way to iterate through a cursor by the way; you can also explicitly open cursors and fetch records, but it's easier this way if you don't need to do anything but iterate over the entire result set.