I have created a view in SQL Plus as follows.
CREATE VIEW jour_cond
AS
SELECT c.nom, c.prenom FROM Conducteur c
JOIN Affectation a ON c.Id_conducteur = a.Id_conducteur
JOIN Trajet t ON a.ID_Trajet = t.ID_Trajet
WHERE t.date_depart = sysdate;
And I have added a value which is the date of today to the column date_depart. But when I call for this view it doesn't show the result. Could you please help?
I figured out that 'sysdate' is working just when it is called from dual. So for the last line I should have written ;
'WHERE t.date_depart = (select sysdate from dual)'
Related
I am trying to get count of all rows from views in oracle schema and my code is working fine. But when i try to add a condition like where actv_ind = 'Y', i am unable to get it working. Any suggestions on how to modify the code to make it working?
SELECT view_name,
TO_NUMBER(extractvalue(xmltype(dbms_xmlgen.getxml('select count(*) cnt from '||owner||'.'||view_name||
'where'||view_name||'.'||'actv_ind= Y')),'/ROWSET/ROW/CNT')) as VIEW_CNT
FROM all_views
WHERE owner = 'ABC' AND view_name not in ('LINK$')
I am getting the error ACTV_IND : Invalid Identifier.
The error messages from DBMS_XMLGEN are not very helpful so you need to be very careful with the syntax of the SQL statement. Add a space before and after the where, and add quotation marks around the Y:
SELECT view_name,
TO_NUMBER(extractvalue(xmltype(dbms_xmlgen.getxml('select count(*) cnt from '||owner||'.'||view_name||
' where '||view_name||'.'||'actv_ind= ''Y''')),'/ROWSET/ROW/CNT')) as VIEW_CNT
FROM all_views
WHERE owner = 'ABC' AND view_name not in ('LINK$');
The query still assumes that every view contains the column ACTV_IND. If that is not true, you might want to base the query off of DBA_TAB_COLUMNS WHERE COLUMN_NAME = 'ACTV_IND'.
Here's a simple sample schema I used for testing:
create user abc identified by abc;
create or replace view abc.view1 as select 1 id, 'Y' actv_ind from dual;
create or replace view abc.view2 as select 2 id, 'N' actv_ind from dual;
I tried looking for a similar example to my problem but could not reproduce the solution to my success.
I have 2 tables, Controller and Actions.
The Actions table has the columns Step, Script, Description, Wait_Until and Ref_Code.
The Controller table can only be joined on the Action table by the Ref_Code.
The Action table cannot have a PK because for each Ref_Code there is a Step to be taken.
Im getting an error when trying to update the Controller table using a merge statement:
ORA-30926: unable to get a stable set of rows in the source tables
My merge statement is as follows:
MERGE INTO DSTETL.SHB_FTPS_CONTROLLER ftpsc
USING (SELECT DISTINCT FTPSC.SESSION_ID,
FTPSC.ORDER_DATE,
sa.step,
sa.next_step,
LAST_ACTION_TMSTMP,
SA.ACTION_SCRIPT,
sa.ref_code,
SA.WAIT_UNTIL
FROM DSTETL.SHB_FTPS_CONTROLLER ftpsc, DSTETL.SHB_ACTIONS sa
WHERE SA.REF_CODE = FTPSC.REF_CODE
AND SA.STEP > ftpsc.curr_step
AND sa.step = ftpsc.next_step) v1
ON (v1.REF_CODE = FTPSC.REF_CODE)
WHEN MATCHED
THEN
UPDATE SET FTPSC.LAST_ACTION_TMSTMP = CURRENT_TIMESTAMP,
ftpsc.next_step = v1.next_step,
ftpsc.curr_step = v1.STEP,
ftpsc.action_script = v1.action_script
WHERE CURRENT_TIMESTAMP >= v1.LAST_ACTION_TMSTMP + v1.WAIT_UNTIL;
COMMIT;
I tried doing this using a normal update as well but Im getting ORA-01732: data manipulation operation not legal on this view.
UPDATE (SELECT FTPSC.SESSION_ID,
FTPSC.ORDER_DATE,
FTPSC.CURR_STEP,
FTPSC.NEXT_STEP,
FTPSC.ACTION_SCRIPT,
sa.step, --New Step
sa.next_step AS "NNS", --New Next Step
FTPSC.LAST_ACTION_TMSTMP,
SA.ACTION_SCRIPT AS "NAS", --New action script
sa.ref_code,
SA.WAIT_UNTIL
FROM DSTETL.SHB_FTPS_CONTROLLER ftpsc
LEFT JOIN
DSTETL.SHB_ACTIONS sa
ON SA.REF_CODE = FTPSC.REF_CODE
AND SA.STEP > ftpsc.curr_step
AND sa.step = ftpsc.next_step) t
SET t.curr_step = t.step,
t.LAST_ACTION_TMSTMP = CURRENT_TIMESTAMP,
t.next_step = t."NNS",
t.action_script = t."NAS";
COMMIT;
Any advice would be appreciated, I already understand this is because the Action table has multiple Ref_Codes but REF_CODE||STEP is unique. And the output of:
SELECT DISTINCT FTPSC.SESSION_ID,
FTPSC.ORDER_DATE,
sa.step,
sa.next_step,
LAST_ACTION_TMSTMP,
SA.ACTION_SCRIPT,
sa.ref_code,
SA.WAIT_UNTIL
FROM DSTETL.SHB_FTPS_CONTROLLER ftpsc, DSTETL.SHB_ACTIONS sa
WHERE SA.REF_CODE = FTPSC.REF_CODE
AND SA.STEP > ftpsc.curr_step
AND sa.step = ftpsc.next_step;
Is how I want the Controller table to be updated like.
Thanks in advance.
It sounds like what you want to do is: update each row in the Controller table with the matching "next step" details from the Actions table. But your Merge statement is querying the Controller table twice, which confuses things.
Is this what you're trying to do?
MERGE INTO DSTETL.SHB_FTPS_CONTROLLER ftpsc
USING (SELECT
step,
next_step,
ACTION_SCRIPT,
ref_code,
WAIT_UNTIL
FROM DSTETL.SHB_ACTIONS
) sa
ON (sa.REF_CODE = FTPSC.REF_CODE)
WHEN MATCHED
THEN
UPDATE SET FTPSC.LAST_ACTION_TMSTMP = CURRENT_TIMESTAMP,
ftpsc.next_step = sa.next_step,
ftpsc.curr_step = sa.STEP,
ftpsc.action_script = sa.action_script
WHERE CURRENT_TIMESTAMP >= ftpsc.LAST_ACTION_TMSTMP + sa.WAIT_UNTIL
AND SA.STEP > ftpsc.curr_step
AND sa.step = ftpsc.next_step;
EDIT: updated query
EDIT2: So, in your original query, in the USING section you were selecting the rows in the Controller table that you wanted to update... but you never joined those rows to the Controller table from the MERGE INTO section to match them up. Having the same alias "ftpsc" just made it less clear that they're two separate objects in the query, and which one you wanted to update.
Honestly I don't really understand why Oracle won't let you update columns that appear in the USING..ON clause. It apparently works fine in SQL Server.
Executing this trigger in ORACLE I got the following error:
Table, View Or Sequence reference 'OCEX_COMI.FECHA_ASIG_GT' not allowed in this context.
This is my trigger:
create or replace trigger ocex_comi_total
before insert or update of id_gt,fecha_asig_gt on ocex_comi
for each row
begin
if ((ocex_comi.fecha_asig_gt > to_date('2018-12-15','yyyy-mm-dd')) and
(ocex_comi.fecha_asig_gt < to_date('2019-01-01','yyyy-mm-dd')))
then
update ocex_comi cm set
cm.PAGO_COM = (select uea.total_bono_especial from OCEX_UEA uea
join OCEX_GUIA_TRANSITO gt on uea.id_uea = gt.dest_id
where gt.cod_gt=cm.id_gt)
where cm.id_gt = (select gt.cod_gt from ocex_guia_transito gt JOIN
ocex_uea uea on uea.id_uea=gt.dest_id
where gt.cod_gt=cm.id_gt);
else
update ocex_comi cm set
cm.PAGO_COM = (select uea.total_x_pnp from OCEX_UEA uea
join OCEX_GUIA_TRANSITO gt on uea.id_uea = gt.dest_id
where gt.cod_gt=cm.id_gt)
where cm.id_gt = (select gt.cod_gt from ocex_guia_transito gt JOIN
ocex_uea uea on uea.id_uea=gt.dest_id
where gt.cod_gt=cm.id_gt);
end if;
end;
Well what I was trying to do is that with this trigger the column "PAGO_COM" of the table "ocex_comi" is automatically filled in from the table "ocex_uea" thanks to the column "total_bono_special" (if in case the date of the field "date_asig_gt" is included) between 15-dec to 31-dec) and if not, fill in the column "total_x_pnp" (if the date of the field "fecha_asig_gt is not between 15-dec to 31-dec.) Some idea or help with the error that comes to me, thanks.
Don't refer to the table column directly; you need to refer to the new pseudorecord:
if ((:new.fecha_asig_gt > to_date('2018-12-15','yyyy-mm-dd')) and
(:new.fecha_asig_gt < to_date('2019-01-01','yyyy-mm-dd')))
then
though I'd use date literals:
if :new.fecha_asig_gt > date '2018-12-15' and
:new.fecha_asig_gt < date '2019-01-01'
then
(Not sure if you really want >= rather than >, though.)
But you are also trying to update all rows in the table inside each branch of your logic, which doesn't sound like something you really want to do anyway, and which will cause a mutating table error at runtime if you try.
It's not really clear quite what your intent is there but I think you want something more like:
...
then
select uea.total_bono_especial
into :new.PAGO_COM
from OCEX_UEA uea
join OCEX_GUIA_TRANSITO gt on uea.id_uea = gt.dest_id
where gt.cod_gt = :new.id_gt;
else
...
and the same kind of thing in the other branch.
As those queries are so similar you could replace the if/else logic with a single query, whoch uses a case expression to decide which of the two column values to return.
I need to update one column in table A with the result of a multiplication of one field from table A with one field from table B.
It would be pretty simple to do this in T-SQL, but I can't write the correct syntax in Oracle.
What I've tried:
UPDATE TABLE_A
SET TABLE_A.COLUMN_TO_UPDATE =
(select TABLE_A.COLUMN_WITH_SOME_VALUE * TABLE_B.COLUMN_WITH_PERCENTAGE
from TABLE_A
INNER JOIN TABLE_B
ON TABLE_A.PRODUCT_ID = TABLE_B.PRODUCT_ID
AND TABLE_A.SALES_CHANNEL_ID = TABLE_B.SALES_CHANNEL_ID)
WHERE TABLE_A.MONTH_ID IN (201601, 201602, 201603);
But I keep getting errors. Could anybody help me, please?
I generally prefer to use the below format for such cases since this will ensure there's no update performed if there's no data in the table(query extracted temp table) whereas in the above solution provided by Brian Leach will update the new value as null if there's no record present in the 2nd table but exists in the first table.
UPDATE
(
select TABLE_A.COLUMN_TO_UPDATE
, TABLE_A.PRODUCT_ID
, TABLE_A.COLUMN_WITH_SOME_VALUE * TABLE_B.COLUMN_WITH_PERCENTAGE as value
from TABLE_A
INNER JOIN TABLE_B
ON TABLE_A.PRODUCT_ID = TABLE_B.PRODUCT_ID
AND TABLE_A.SALES_CHANNEL_ID = TABLE_B.SALES_CHANNEL_ID
AND TABLE_A.MONTH_ID IN (201601, 201602, 201603)
) DATA
SET DATA.COLUMN_TO_UPDATE = DATA.value;
This solution can cause key preserved value issues which shouldn't be an issue here since i expect a single row in both the tables for one product(ID).
More on Key Preserved table concept in inner join can be found here
https://asktom.oracle.com/pls/asktom/f?p=100:11:::::P11_QUESTION_ID:548422757486
#Jayesh Mulwani raiesed a valid point, this will set the value to null if there is no matching record. This may or may not be the desired result. If it isn't, and no change is desirect, you can change the select statement to:
coalesce((SELECT table_b.column_with_percentage
FROM table_b
WHERE table_a.product_id = table_b.product_id AND table_a.sales_channel_id = table_b.sales_channel_id),1)
If this is the desired outcome, Jayesh's solution will be more efficient as it will only update matching records.
UPDATE table_a
SET table_a.column_to_update = table_a.column_with_some_value
* (SELECT table_b.column_with_percentage
FROM table_b
WHERE table_a.product_id = table_b.product_id
AND table_a.sales_channel_id = table_b.sales_channel_id)
WHERE table_a.month_id IN (201601, 201602, 201603);
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.