I am working on an existing query for SSRS report that focuses on aggregated financial aid data split out into 10 aggregations. User wants to be able to select students included in that aggregated data based on new vs. returning and 'selected for verification.' For the new/returning status, I added a CTE to return the earliest admit date for a student. 2 of the 10 data fields are created by a subquery. I have been trying for 3 days to get the subquery to use the CTE fields for a filter, but they won't work. Either they're ignored or I get a 'not a group by expression' error. If I put the join to the CTE within the subquery, the query time jumps from 45 second to 400 seconds. This shouldn't be that complicated! What am I missing? I have added some of the code... 3 of the chunks work - paid_something doesn't.
with stuStatus as
(select
person_uid, min(year_admitted) admit_year
from academic_study
where aid_year between :AidYearStartParameter and :AidYearEndParameter
group by person_uid)
--- above code added to get student information not originally in qry
select
finaid_applicant_status.aid_year
, count(1) as fafsa_cnt --works
, sum( --works
case
when (
package_complete_date is not null
and admit.status is not null
)
then 1
else 0
end
) as admit_and_package
, (select count(*) --does't work
from (
select distinct award_by_aid_year.person_uid
from
award_by_aid_year
where
award_by_aid_year.aid_year = finaid_applicant_status.aid_year
and award_by_aid_year.total_paid_amount > 0 )dta
where
(
(:StudentStatusParameter = 'N' and stuStatus.admit_year = finaid_applicant_status.aid_year)
OR
(:StudentStatusParameter = 'R' and stuStatus.admit_year <> finaid_applicant_status.aid_year)
OR :StudentStatusParameter = '%'
)
)
as paid_something
, sum( --works
case
when exists (
select
1
from
award_by_person abp
where
abp.person_uid = fafsa.person_uid
and abp.aid_year = fafsa.aid_year
and abp.award_paid_amount > 0
) and fafsa.requirement is not null
then 1
else 0
end
) as paid_something_fafsa
from
finaid_applicant_status
join finaid_tracking_requirement fafsa
on finaid_applicant_status.person_uid = fafsa.person_uid
and finaid_applicant_status.aid_year = fafsa.aid_year
and fafsa.requirement = 'FAFSA'
left join finaid_tracking_requirement admit
on finaid_applicant_status.person_uid = admit.person_uid
and finaid_applicant_status.aid_year = admit.aid_year
and admit.requirement = 'ADMIT'
and admit.status in ('M', 'P')
left outer join stuStatus
on finaid_applicant_status.person_uid = stuStatus.person_uid
where
finaid_applicant_status.aid_year between :AidYearStartParameter and :AidYearEndParameter
and (
(:VerifiedParameter = '%') OR
(:VerifiedParameter <> '%' AND finaid_applicant_status.verification_required_ind = :VerifiedParameter)
)
and
(
(:StudentStatusParameter = 'N' and (stuStatus.admit_year IS NULL OR stuStatus.admit_year = finaid_applicant_status.aid_year ))
OR
(:StudentStatusParameter = 'R' and stuStatus.admit_year <> finaid_applicant_status.aid_year)
OR :StudentStatusParameter = '%'
)
group by
finaid_applicant_status.aid_year
order by
finaid_applicant_status.aid_year
Not sure if this helps, but you have something like this:
select aid_year, count(1) c1,
(select count(1)
from (select distinct person_uid
from award_by_aid_year a
where a.aid_year = fas.aid_year))
from finaid_applicant_status fas
group by aid_year;
This query throws ORA-00904 FAS.AID_YEAR invalid identifier. It is because fas.aid_year is nested too deep in subquery.
If you are able to modify your subquery from select count(1) from (select distinct sth from ... where year = fas.year) to select count(distinct sth) from ... where year = fas.year then it has the chance to work.
select aid_year, count(1) c1,
(select count(distinct person_uid)
from award_by_aid_year a
where a.aid_year = fas.aid_year) c2
from finaid_applicant_status fas
group by aid_year
Here is simplified demo showing non-working and working queries. Of course your query is much more complicated, but this is something what you could check.
Also maybe you can use dbfiddle or sqlfiddle to set up some test case? Or show us sample (anonimized) data and required output for them?
I have below SQL Server query and need to convert it to Vertica query.
The problem right now is vertica doesnt support multi-level correlated subqueries so in my example and t3.a = t1.a doesnt work
select * from t1
where not exists (
select * from t2
where t2.y = t1.y
and t2.x in (
select top 1 x from t3
where t3.z = t2.z
and t3.a = t1.a
order by t3.b
)
)
Can anyone please help me do this?
Vertica doesn't support more than 1 level of correlated sub-queries, you should convert them into JOINs.
It also doesn't support the TOP x clause, use LIMIT x instead.
Something like this:
SELECT t1.*
FROM t1
LEFT JOIN t2 ON t1.y = t2.y
WHERE t2.y IS NULL
AND t2.x IN
(SELECT t3.x
FROM t3
JOIN t2 ON t3.z = t2.z
JOIN t1 ON t3.a=t1.a
ORDER BY t3.b LIMIT 1);
I'm trying to use Oracle's sdo_contains spatial operator, but it seems, that it's not really working, when you use it on unioned tables.
The below code runs in 2 mins, but you have to duplicate the spatial operator for every source table:
SELECT -- works
x.code,
count(x.my_id) cnt
FROM (select
c.code,
t.my_id
from my_poi_table_1 t,my_shape c
WHERE SDO_contains(c.shape,
sdo_geometry(2001,null,SDO_POINT_type(t.latitude, t.longitude,null),null,null)
) = 'TRUE'
union all
select
c.code,
t.my_id
from my_poi_table_2 t,my_shape c
where SDO_contains(c.shape,
sdo_geometry(2001,null,SDO_POINT_type(t.lat, t.lng,null),null,null)
) = 'TRUE'
) x
group by x.code
I wanted to make it simple, so I tried to first create the points, and then just once use the sdo_contains on it, but it's running for more then 25 mins, because it's not using the spatial index:
SELECT -- does not work
c.code,
count(x.my_id) cnt
FROM my_shape c,
(select
my_id,
sdo_geometry(2001,null,SDO_POINT_type(latitude, longitude,null),null,null) point
from my_poi_table_1 t
union all
select
my_id2,
sdo_geometry(2001,null,SDO_POINT_type(lat, lng,null),null,null) point
from my_poi_table_2 t
) x
WHERE SDO_contains(c.shape,
x.point
) = 'TRUE'
group by c.code
Is there a way to use the sdo_contains on the results of multiple tables without having to include it in the select several times?
Oracle: 12.1.0.2
It seems, that sdo_contains cannot (efficiently) read from a subselect: if I put one of the poi tables into a subselect, then Oracle will not use spatial index for that part:
SELECT -- does not work
x.code,
count(x.my_id) cnt
FROM (select --+ ordered index(c,INDEX_NAME)
c.code,
t.my_id
from my_shape c,(select t.*,rownum rn from my_poi_table_1 t) t
WHERE SDO_contains(c.shape,
sdo_geometry(2001,null,SDO_POINT_type(t.latitude, t.longitude,null),null,null)
) = 'TRUE'
union all
select
c.code,
t.my_id
from my_poi_table_2 t,my_shape c
where SDO_contains(c.shape,
sdo_geometry(2001,null,SDO_POINT_type(t.lat, t.lng,null),null,null)
) = 'TRUE'
) x
group by x.code
I have a requirement to validate records present in table.First, we load the records into table and then we validate it using sql query. I am using below query to update the status code but to process 114000, it took around 7 hours. Is it acceptable? I am not sure why it's taking too much time.Please suggest any better idea so that I can minimize the time.
Query :
MERGE INTO mem_src_extn t USING
(
SELECT mse.rowid row_id,
CASE WHEN mse.type_value IS NULL OR mse."TYPE" IS NULL OR mse.VALUE_1 IS NULL or mse.VALUE_2 IS NULL THEN '100'
WHEN ( SELECT count(*) FROM cmc_mem_src cms WHERE cms.tn_id = mse.type_value ) = 0 THEN '222'
WHEN count(mse.value_1) over ( partition by type_value ) > 1 THEN '333'
ELSE '000' int_value_1
FROM mem_src_extn mse
) u
ON ( t.rowid = u.row_id )
WHEN MATCHED THEN UPDATE SET t.int_value_1 = u.int_value_1
The performance problem is probably caused by the SELECT count(*) subquery , not the MERGE.
The MERGE uses a ROWID join, which should be about as fast as any join can get. But it's possible that Oracle is incorrectly optimizing the subquery. Try re-writing the statement with a LEFT JOIN instead of a correlated subquery:
MERGE INTO mem_src_extn t USING
(
SELECT DISTINCT
mse.rowid row_id,
CASE WHEN mse.type_value IS NULL OR mse."TYPE" IS NULL OR mse.VALUE_1 IS NULL or mse.VALUE_2 IS NULL THEN '100'
WHEN cms.tn_id IS NULL THEN '222'
WHEN count(mse.value_1) over ( partition by type_value ) > 1 THEN '333'
ELSE '000' END int_value_1
FROM mem_src_extn mse
LEFT JOIN cmc_mem_src cms
ON mse.type_value = cms.tn_id
) u
ON ( t.rowid = u.row_id )
WHEN MATCHED THEN UPDATE SET t.int_value_1 = u.int_value_1;
But this is only a guess. If I'm wrong, the next step would be to get a query plan. Run explain plan for merge ... and then select * from table(dbms_xplan.display); and post the entire output of that statement in the question.
I have query in which i used partition of avoid the duplicate value for particular column , but still it is giving duplicate row below i am mention my query in which i used partition
SELECT iol.M_product_id as faultyProduct , iol.SERIALNO,iol.M_product_id as newproduct, ma.Description,
mp.M_Product_category_id ,mi.issotrx, co.C_BPartner_ID,
ROW_NUMBER() OVER(PARTITION BY ma.Description ORDER BY iol.M_product_id DESC) rn
FROM M_inoutline iol
inner join M_inout mi ON (iol.m_inout_id = mi.m_inout_id)
inner join C_Order co ON (co.c_order_id = mi.c_order_id )
inner Join M_AttributeSetInstance ma ON (ma.m_attributesetinstance_id =iol.m_attributesetinstance_id)
inner join M_Product mp ON (mp.m_product_id = iol.m_product_id)
where mp.m_product_category_id= 1000447 AND mi.issotrx = 'Y';
Please help me out
For me it looks you want to do:
select * from (/*YOUR QUERY*/) where rn = 1;