Performance issue with "not in"

Question

Hi,
I have a query, where, in the WHERE CLAUSE of the query I have a condition using IN operator.
The query also has another CONDITION same as above but with a NOT IN operator.
Both are on the same column.
The difference between them being the values are provided dynamically and are mutually exclusive, meaning, if a value provided for IN operator, then a null is snt to NOT IN operator condition.
When both the conditions are in place, the query is much much slower, compared to only IN operator.
Is it any problem with the In operator.
the query looks like as below....
AND (( :ps_source_id IS NOT NULL
AND ( bmmsv.source_type_code = 'EVEH'
AND bmlh.object_id || bmlh.source_type IN(<subquery fetching values>)))
OR :ps_source_id IS NULL)
AND (( :ps_exclude_source_id IS NOT NULL
AND ( bmmsv.source_type_code = 'EVEH'
AND bmlh.object_id || bmlh.source_type NOT IN(<subquery fetching values>)))
OR :ps_exclude_source_id IS NULL)
Both the subqueries are same in the IN and the NOT IN operators.
KK

Answer 1

Hi,
This is how my where clause portion of the query causing the problem...
AND (( :p_exclude_source_id IS NOT NULL
AND ( bmmsv.source_type_code = 'EVEH'
AND bmlh.object_id || bmlh.source_type NOT IN(
SELECT aeoab.event_offer_id || 'EVEO'
FROM apps.ams_event_offers_all_b aeoab
WHERE aeoab.event_header_id IN(
SELECT bmmsv.object_id
FROM apps.bpsicc_mol_marketing_source_v bmmsv
WHERE bmmsv.object_id
|| bmmsv.source_type_code IN(
SELECT COLUMN_VALUE
exclude_source
FROM TABLE
(CAST
(bpsicc_crm_util.get_msv_string
(:p_exclude_source_id,
NULL) AS bpsicc_ms_string))))
UNION
SELECT bmmsv.object_id || bmmsv.source_type_code
FROM apps.bpsicc_mol_marketing_source_v bmmsv
WHERE bmmsv.object_id IN(
SELECT bmmsv.object_id
FROM apps.bpsicc_mol_marketing_source_v bmmsv
WHERE bmmsv.object_id
|| bmmsv.source_type_code IN(
SELECT COLUMN_VALUE
exclude_source
FROM TABLE
(CAST
(bpsicc_crm_util.get_msv_string
(:p_exclude_source_id,
NULL) AS bpsicc_ms_string))))))
OR ( bmmsv.source_type_code = 'CAMP'
AND bmlh.object_id || bmlh.source_type NOT IN(
SELECT acsb.schedule_id || 'CSCH'
FROM apps.ams_campaign_schedules_b acsb
WHERE acsb.campaign_id IN(
SELECT bmmsv.object_id
FROM apps.bpsicc_mol_marketing_source_v bmmsv
WHERE bmmsv.object_id
|| bmmsv.source_type_code IN(
SELECT COLUMN_VALUE exclude_source
FROM TABLE
(CAST
(bpsicc_crm_util.get_msv_string
(:p_exclude_source_id,
NULL) AS bpsicc_ms_string))))
UNION
SELECT bmmsv.object_id || bmmsv.source_type_code
FROM apps.bpsicc_mol_marketing_source_v bmmsv
WHERE bmmsv.object_id IN(
SELECT bmmsv.object_id
FROM apps.bpsicc_mol_marketing_source_v bmmsv
WHERE bmmsv.object_id
|| bmmsv.source_type_code IN(
SELECT COLUMN_VALUE exclude_source
FROM TABLE
(CAST
(bpsicc_crm_util.get_msv_string
(:p_exclude_source_id,
NULL) AS bpsicc_ms_string))))))
OR ( bmmsv.source_type_code IN('EVEO', 'CSCH', 'EONE')
AND bmlh.object_id || bmlh.source_type NOT IN(
SELECT bmmsv.object_id || bmmsv.source_type_code
FROM apps.bpsicc_mol_marketing_source_v bmmsv
WHERE bmmsv.object_id IN(
SELECT bmmsv.object_id
FROM apps.bpsicc_mol_marketing_source_v bmmsv
WHERE bmmsv.object_id
|| bmmsv.source_type_code IN(
SELECT COLUMN_VALUE exclude_source
FROM TABLE
(CAST
(bpsicc_crm_util.get_msv_string
(:p_exclude_source_id,
NULL) AS bpsicc_ms_string))))))
OR :p_exclude_source_id IS NULL))
There is also another where condition with the same content except for the
"NOT IN"operator. It has "IN" operator, in the third line of the above code.
With out the NOT IN part of the where condition, the entire query runs in 50 secs.
but if this part is added, it takes long time.
let me know, if u require more info.
Thanks,
KK