I have a sql that is selecting many things from the database however I would like that data to only comeback which is matched to a personal table I have.
I would like to join a column [vin_code] from my table [population] however there are nulls in here and were there are nulls I would like to join another column from my table to another table in the database.
I will give an example sql below:
Select distinct v.kegal_rntity_id
From vin v
Inner join ops$dami.population pop
On v.vin_code = pop.vin_code
Then were pop.vin_code is null I would like to join pop.vis_code on a table in the database called zegal_rentity z column z.vis_code
So something like
join zegal_rentity z
On pop.vis_code = z.vis_code
But I only want to do this were pop.vin_code is null
As sample data is not available, I am unable to test the solution but try the following query with condition based outer join.
Select distinct v.kegal_rntity_id
From ops$dami.population pop
Left join vin v
On v.vin_code = pop.vin_code
Left join zegal_rentity z
On (case when pop.vin_code is null and
pop.vis_code = z.vis_code then 1 end = 1);
Cheers!!
Related
I want some help to optimize this SQL Query.
This is working completely fine. I just want to reduce the runtime of this query
select distinct
o.usrp_order_number,t.*
from ms_bvoip_order_extension oe
inner join ms_order o on oe.ms_order_id = o.ms_order_id
inner join ms_sub_order so on so.ms_order_id = o.ms_order_id
inner join ms_job j on j.entity_id = so.ms_sub_order_id
left join mstask t ON t.wf_job_id = j.wf_job_id
where
o.order_type = 900
and o.entered_date between date_sub(current_date(),53) and
date_sub(current_date(),3)
and j.entity_type = 5 and t.name RLIKE 'Error|Correct|Create AOTS Ticket' and t.wf_job_id is not null
order by
o.usrp_order_number
The WHERE conditions are being executed after joins in Hive (though CBO and PPD may change this behavior), better study the EXPLAIN output for both queries. You can move conditions like this: o.order_type = 900 to the join ON clause to reduce rows on join. Only non-equi conditions involving both tables columns are not allowed in the join ON clause in Hive. Also table t is left-joined, but conditions in the where: t.name RLIKE 'Error|Correct|Create AOTS Ticket' and t.wf_job_id is null and t.ORIGINAL_START_DATE is not null transform left join to the inner join. Check do you need INNER or LEFT JOIN
select distinct
o.usrp_order_number,t.*
from ms_bvoip_order_extension oe
inner join ms_order o
on oe.ms_order_id = o.ms_order_id
and o.order_type = 900
and and o.entered_date between date_sub(current_date(),53) and date_sub(current_date(),3)
inner join ms_sub_order so on so.ms_order_id = o.ms_order_id
inner join ms_job j on j.entity_id = so.ms_sub_order_id
and j.entity_type = 5
left join mstask t on t.wf_job_id = j.wf_job_id
and t.name RLIKE 'Error|Correct|Create AOTS Ticket'
and t.wf_job_id is null
and t.ORIGINAL_START_DATE is not null
order by o.usrp_order_number
Also read this answer about configuration settings: https://stackoverflow.com/a/48487306/2700344
be sure you have proper index on
table ms_order a composite index on columns entered_date, order_type, ms_order_id
table ms_job a composite index on columns entity_type, entity_id
table mstask a composite index on columns wf_job_id, ORIGINAL_START_DATE
table ms_sub_order an index on column ms_order_id
table ms_bvoip_order_extension and index on column ms_order_id
You will need to add indexes for the columns that you are filtering by.
We do not know how many records each of your tables are holding, but the t.name RLIKE criteria should be evaluated as the very last item. I would rewrite your query based on the following idea:
select ...
from
(
select ...
inner join ...
inner join ...
inner join ...
left join ...
where ...
) temporary
where temporary.somename RLIKE 'Error|Correct|Create AOTS Ticket'
o.usrp_order_number
If the query is not very dynamic, then you can even cache the results for a while.
I have 2 tables.
This is tableA
(invoice,D/O, cost..) and
Table B
(D/O, GRN, Qty)
Now how to use query to show table A include GRN,Qty
See
You need a LEFT OUTER JOIN to retrieve all the records from table A with matched records from table B.
Guessing at the join criteria because your question doesn't say what they are:
select a.*
, b.grn
, b.grn_line
, b.qty_grn
from a
left outer join b
on a.do = b.do
and a.do_line = b.do_line
and a.invoice_line = b.grn_line
In a oracle i'm using a Decode Statement as below. For security reasons i don't want the code to have the hardcoded values and i plan to create a new lookup table.
Select CONCAT( Decode(A.COUNTRY_INITIAL,
'A','America',
'B','Brazil',
'F','FINLAND',
NULL),
Decode(A.ADD_VALUE,
'M','YES',
NULL))
from (
Select SUBSTR(COUNTRY_BASE, -1,1) as COUNTRY_INITIAL,
SUBSTR(IS_VALUED, -1,1) as ADD_VALUE
from TBL1
)A
Refernece Table
*******************
Clmn1 Clmn2 Clmn3
--------------------------
cntry1 A America
cntry2 B Brazil
cntry3 F Finland
Value1 M YES
Could you please let me know how i can incorporate this in the decode logic. Also fyi im using this CODE SNIPPET in a Oracle Function.
If you're going to store the lookup information in a table, you wouldn't use a DECODE. You'd join the two tables
SELECT ref.clmn3
FROM tbl1 t1
LEFT OUTER JOIN <<reference table>> ref
ON( substr(t1.country_base, -1, 1) = ref.clmn2 )
Since your DECODE has a NULL, I'm guessing that you are expecting that some rows of tbl1 will not have a matching row in the reference table so I'm guessing that you want a LEFT OUTER JOIN rather than an INNER JOIN.
If you have these details in a table you can simply use a join to get desired output.
select t1.COUNTRY_BASE,ref.Clmn3,ref1.Clmn3
frorm TBL1 t1
left outer join reftable ref
on SUBSTR(t1.COUNTRY_BASE, -1,1)=ref.Clmn2
left outer join reftable ref1
on SUBSTR(t1.IS_VALUED, -1,1)=ref.Clmn2;
If your are using separate table to store the values, you don't need decode function. You can simply join the two tables.
select a.country_base,
a.is_valued,
b.clmn3,
c.clmn3
from tbl1 a left outer join reference_table b
on (substr(a.country_base, -1, 1) = b.clmn2
and b.clmn1 like 'cntry%' --extra clause needed if there are same country and value codes
)
left outer join reference_table c
on (substr(a.is_valued, -1, 1) = c.clmn2
and c.clmn1 like 'Value%' --extra clause needed if there are same country and value codes
);
Trying to retrive the MAX doc in the right table.
SELECT F43.PDDOCO,
F43.PDSFXO,
F43.PDLNID,
F43.PDAREC/100 As Received,
F431.PRAREC/100,
max(F431.PRDOC)
FROM PRODDTA.F43121 F431
LEFT OUTER JOIN PRODDTA.F4311 F43
ON
F43.PDKCOO=F431.PRKCOO
AND F43.PDDOCO=F431.PRDOCO
AND F43.PDDCTO=F431.PRDCTO
AND F43.PDSFXO=F431.PRSFXO
AND F43.PDLNID=F431.PRLNID
WHERE F431.PRDOCO = 401531
and F431.PRMATC = 2
and F43.PDLNTY = 'DC'
Group by
F43.PDDOCO,
F43.PDSFXO,
F43.PDLNID,
F43.PDAREC,
F431.PRAREC/100
This query is still returning the two rows in the right table. Fairly new to SQL and struggling with the statement. Any help would be appreciated.
Without seeing your data it is difficult to tell where the problem might so I will offer a few suggestions that could help.
First, you are joining with a LEFT JOIN on the PRODDTA.F4311 but you have in the WHERE clause a filter for that table. You should move the F43.PDLNTY = 'DC' to the JOIN condition. This is causing the query to act like an INNER JOIN.
Second, you can try using a subquery to get the MAX(PRDOC) value. Then you can limit the columns that you are grouping on which could eliminate the duplicates. The query would them be similar to the following:
SELECT F43.PDDOCO,
F43.PDSFXO,
F43.PDLNID,
F43.PDAREC/100 As Received,
F431.PRAREC/100,
F431.PRDOC
FROM PRODDTA.F43121 F431
INNER JOIN
(
-- subquery to get the max
-- then group by the distinct columns
SELECT PDKCOO, max(PRDOC) MaxPRDOC
FROM PRODDTA.F43121
WHERE PRDOCO = 401531
and PRMATC = 2
GROUP BY PDKCOO
) f2
-- join the subquery result back to the PRODDTA.F43121 table
on F431.PRDOC = f2.MaxPRDOC
AND F431.PDKCOO = f2.PDKCOO
LEFT OUTER JOIN PRODDTA.F4311 F43
ON F43.PDKCOO=F431.PRKCOO
AND F43.PDDOCO=F431.PRDOCO
AND F43.PDDCTO=F431.PRDCTO
AND F43.PDSFXO=F431.PRSFXO
AND F43.PDLNID=F431.PRLNID
AND F43.PDLNTY = 'DC' -- move this filter to the join instead of the WHERE
WHERE F431.PRDOCO = 401531
and F431.PRMATC = 2
If you provide your table structures and some sample data, it will be easier to determine the issue.
am a newbie to Oracle/PL SQL.I've 2 tables A and B.
A has a column CustId,Age,Location and Date. Table B has 2 columns CustId,CustName.
What would be the sql query to show show CustName and Location for a given age?
Thanks.
your question "What would be the sql query to show show CustName and Location for a given age?" helps define your query pretty well:
SELECT CustName, Location
FROM TableA a
INNER JOIN TableB b
ON b.CustId = a.CustId
WHERE a.Age = #
All we need to do on top of that select for your specific fields is make sure to join the two tables on their common column (CustID).
Another option would be to avoid the WHERE statement:
SELECT CustName, Location
FROM TableB b
INNER JOIN TableA a
ON a.CustID = b.CustID
AND a.Age = #
you need join. something like
SELECT custname, location FROM a JOIN b ON a.custid = b.custid WHERE age = [age];