as tittle says i need to improve this query that i have made in ms access, the tables are from a linked DB. i can't index them. i need help to understand where it is taking so long... is there any function like
EXPLAIN to access? do i need to put more columns in some sort of group by? what i need to do to improve the speed of this (the group by of first select has 4M rows but after grouped only has 321k and it takes 20min to run when laptop doesn't crashes)
SELECT a.SEQ_NO,
b.SKU,
b.maxdate,
(a.BASE_COST/a.EXCHANGE) AS BASE_COST,
(a.NET_COST/a.EXCHANGE) AS NET_COST,
(a.NET_NET_COST/a.EXCHANGE) AS EXCHAGED_NET_NET_COST,
a.NET_NET_COST,
(a.DEAD_NET_NET_COST/a.EXCHANGE) AS DEAD_NET_NET_COST,
(a.LANDED_COST/a.EXCHANGE) AS LANDED_COST,
(a.POSEIMA/a.EXCHANGE) AS POSEIMA,
(a.TOTAL_BONUS/a.EXCHANGE) AS TOTAL_BONUS,
(a.IEC/a.EXCHANGE) AS IEC,
(a.IEC_BONUS/a.EXCHANGE) AS IEC_BONUS,
(a.ECO_INVOICE_FORN/a.EXCHANGE) AS ECO_INVOICE_FORN_SYSTEM,
(a.ECO_INVOICE/a.EXCHANGE) AS ECO_INVOICE_SYSTEM,
(a.ECO_MERCHANDISE/a.EXCHANGE) AS ECO_MERCHANDISE_SYSTEM,
c.SUPPLIER,
c.SUP_NAME,
d.UPC,
d.PRIMARY_UPC_IND,
f.BRAND,
g.DEPT,
g.DESC_UP,
g.CLASS,
g.SUBCLASS,
h.AV_COST,
h.UNIT_RETAIL AS Last_of_unit_retail,
h.STATUS, i.[UNIT VALUE],
i.[INITIAL DATE],
i.[END DATE] INTO PRICELIST
FROM (((((((RMS_MC_NB_PRICELIST_COST AS a INNER JOIN (SELECT MAX(SEQ_NO) AS
ID, SKU, MAX(ACTIVE_DATE) AS maxdate FROM RMS_MC_NB_PRICELIST_COST GROUP BY
SKU) AS b ON a.SEQ_NO = b.ID)
INNER JOIN RMS_MC_SUPS AS c ON a.SUPPLIER = c.SUPPLIER)
INNER JOIN RMS_MC_UPC_EAN AS d ON b.SKU = d.SKU)
INNER JOIN RMS_MC_WIN_ATTRIBUTES AS e ON b.SKU = e.SKU)
INNER JOIN RMS_MC_NB_BRAND AS f ON e.NB_BRAND_NO = f.BRAND_NO)
INNER JOIN RMS_MC_DESC_LOOK AS g ON b.SKU = g.SKU)
INNER JOIN RMS_MC_WIN_STORE AS h ON b.SKU = h.SKU)
LEFT JOIN MAPA_APOIOS_SISO AS i ON b.SKU = i.[# ARTICLE];
Related
I need to convert a SQL query into LINQ, either to Query Syntax or Method Syntax.
SELECT
IA.ItemId,
IVT.ItemName,
C.DeliveryMethod,
SUM(OD.Quantity) AS Qty
FROM OrderHeader OH
INNER JOIN OrderDetail OD ON OH.OrderId = OD.OrderId
LEFT JOIN Customer C ON OH.CustomerId = C.Id
LEFT JOIN ItemAvailability IA ON OD.ItemId = IA.RecId
INNER JOIN Inventory IVT ON IA.ItemId = IVT.ItemId
WHERE OH.DeliveryDate = '02/03/2023'
AND OH.OrderType = 'Web'
GROUP BY IA.ItemId, Ivt.ItemName, C.DlvMode
ORDER BY IA.ItemId
I've spent a long time Googling and YouTubing, but everyone provides examples of either just Inner Joins, Group Joins, or Left Joins. No one gave example of having both Inner Joins and Left Joins in the same query.
I know the syntax for a simple inner join like this:
SQL
SELECT OH.OrderId, OD.ItemId, OD.Quantity
FROM OrderHeader OH
INNER JOIN OrderDetail OD ON OH.OrderId = OD.OrderId
ORDER BY OD.ItemId
LINQ
from oh in OrderHeader
join od in OrderDetail on oh.OrderId equals od.OrderId
orderby ordt.IItemId
select new {
OrderId = oh.OrderId,
ItemId = od.ItemId,
Quantity = od.Quantity
}
And I know the LINQ syntax for left join also. But I am having trouble to figure out how to have both inner and left joins in one LINQ query.
I hope someone here can help, please.
Just combine join techniques together
var deliveryDate = ...;
var query =
from oh in OrderHeader
join od in OrderDetail on oh.OrderId equals od.OrderId
join c in Customer ON oh.CustomerId equals c.Id into cj
from c in cj.DefaultIfEmpty()
join ia in ItemAvailability on od.ItemId equals ia.RecId into iaj
from ia in iaj.DefaultIfEmpty()
join ivt in Inventory on ia.ItemId equals ivt.ItemId
where oh.DeliveryDate == deliveryDate && oh.OrderType == "Web"
group od by new { ia.ItemId, ivt.ItemName, c.DlvMode, c.DeliveryMethod } into g
select new
{
g.Key.ItemId,
g.Key.DeliveryMethod,
Qty = g.Sum(x => x.Quantity)
} into s
orderby s.ItemId
select s;
can someone please help me in combining these 2 Teradata queries into a single query? The tables - cdb.dim_party_doc_id, cdb.dim_doc_issuer, mdb.fp_account_entity_map do not have customer_account_number in them, so I not able to directly join all these tables in a single query directly.
Thanks a lot!!
SELECT
det.cust_id AS customer_account_number,
c.encrypt_val AS ssn_encrypted,
det.cust_first_name AS name_1,
bal.BALANCE_AMT AS principal
FROM
cdb.DIM_CUSTOMER det
INNER JOIN
cdb.fact_stored_val_acct_dly bal
ON det.cust_id = bal.customer_id AND bal.curr_cd='USD' and bal.acct_type_code='SBA'
INNER JOIN
cdb.dim_party_acct_map b
ON bal.customer_id = b.cust_id
INNER JOIN
cdb.dim_party_doc_id c
ON b.party_key = c.party_key
AND c.status = 'A'
INNER JOIN
cdb.dim_doc_issuer d
ON c.doc_issuer_id = d.doc_issuer_id
AND d.doc_type = 'TAX_ID'
AND d.doc_subtype = 'SSN'
and
SELECT
own.owner_id AS customer_account_number,
entity.entity_id AS dd_number
FROM
mdb.fp_account_owner_map own
LEFT JOIN
mdb.fp_account_entity_map entity
ON own.fp_account_id = entity.fp_account_id
WHERE
entity.entity_type in (12)
AND
own.product_id in (5501)
Below query solves my problem
SELECT
det.cust_id AS customer_account_number,
temp.direct_deposit_account_number AS account_number,
c.encrypt_val AS ssn_encrypted,
det.cust_first_name AS name_1,
bal.BALANCE_AMT AS principal
FROM
cdb.DIM_CUSTOMER det
LEFT JOIN
cdb.fact_stored_val_acct_dly bal
ON det.cust_id = bal.customer_id AND bal.curr_cd='USD' and bal.acct_type_code='SBA'
INNER JOIN
cdb.dim_party_acct_map b
ON bal.customer_id = b.cust_id
INNER JOIN
cdb.dim_party_doc_id c
ON b.party_key = c.party_key
AND c.status = 'A'
INNER JOIN
cdb.dim_doc_issuer d
ON c.doc_issuer_id = d.doc_issuer_id
AND d.doc_type = 'TAX_ID'
AND d.doc_subtype = 'SSN'
INNER JOIN
(SELECT
own.owner_id AS customer_id,
entity.entity_id AS direct_deposit_account_number
FROM mdb.fp_account_owner_map own
LEFT JOIN
mdb.fp_account_entity_map entity
ON own.fp_account_id = entity.fp_account_id
WHERE entity.entity_type in (12)
AND own.product_id in (5501)) AS temp
ON customer_account_number=temp.customer_id
I have three tables and trying to join these tables with count(working_days) and sum(Overtime) functions but overtime is not showing correct i am trying the query is.
SELECT E.EMP_CODE,E.EMP_NAME,
COALESCE(SUM(O.OVERTIME),0) AS OVERTIME,COALESCE(COUNT(C.EMP_ATT),0) WORKED_DAYS
FROM EMP E
LEFT JOIN OVERTIME O
ON E.EMP_CODE = O.EMP_CODE
LEFT JOIN ATT_REG C
ON E.EMP_CODE=C.EMP_CODE
GROUP BY E.EMP_CODE,E.EMP_NAME
ORDER BY EMP_CODE
Yes, You will get multiple records of the overtime for employees as shift date (or similar in your table) is missing in the join.
SELECT E.EMP_CODE,E.EMP_NAME,
COALESCE(SUM(O.OVERTIME),0) AS OVERTIME,
COALESCE(COUNT(C.EMP_ATT),0) WORKED_DAYS
FROM EMP E
LEFT JOIN ATT_REG C
ON E.EMP_CODE=C.EMP_CODE
LEFT JOIN OVERTIME O
ON E.EMP_CODE = O.EMP_CODE
AND C.SHIFTDATE = O.SHIFDATE -- YOU NEED SOMETHING LIKE THIS
GROUP BY E.EMP_CODE,E.EMP_NAME
ORDER BY EMP_CODE
I have the following query that returns < 300 results. It is currently taking about 4 seconds to complete, and when I look at the execution plan, it shows that it is spending 41% of resources on a clustered index scan. My limited knowledge of database administration suggests that a clustered index seek would improve performance. How can I get the query to use a clustered index seek instead of a clustered index scan? Below is the pertinent information and the query.
Sql Server 2008 R2
Table PMDME approx 140,000 rows (this is the one that is taking up 41% of resources)
Server Hardware: 16 core 2.7gz processors, 48gb ram
DECLARE #start date, #end date
SET #start = '2013-01-01'
SET #end = CAST(GETDATE() AS DATE)
SELECT
b.total,
c.intakes,
d.ships,
a.CODE_,
RTRIM(a.NAME_) as name,
f.employee as Salesperson,
g.referral_type_id,
h.referral_type,
e.slscode,
a.city,
a.STATE_,
a.zip
FROM PACWARE.ADS.RFDME a
LEFT OUTER JOIN (
SELECT SUM(b.quantity) total, a.ref_id from event.dbo.sample a
JOIN event.dbo.sample_parts b on a.id = b.sample_id
JOIN PACWARE.ADS.PTDME c on b.part_id = c.CODE_
WHERE c.MEDICAREID = 'E0607' AND a.order_date between #start and #end
GROUP BY a.ref_id
)b on a.CODE_ = b.ref_id
LEFT OUTER JOIN (
SELECT COUNT(a.CODE_)as intakes, rfcode
FROM PACWARE.ADS.PMDME a
WHERE a.REGDATETIME BETWEEN #start and #end
GROUP BY a.RFCODE
) c on a.CODE_ = c.rfcode
LEFT OUTER JOIN (
SELECT
COUNT(a.CODE) as ships, b.rfcode
FROM
(
SELECT
A.ACCOUNT AS CODE,
MIN(CAST(A.BILLDATETIME AS DATE)) AS SHIPDATE
FROM PACWARE.ADS.ARODME A
LEFT OUTER JOIN PACWARE.ADS.PTDME B ON A.PTCODE=B.CODE_
LEFT OUTER JOIN event.dbo.newdate() D ON A.ACCOUNT=D.ACCOUNT
LEFT OUTER JOIN event.dbo.newdate_extras() D2 ON A.ACCOUNT=D2.ACCOUNT
WHERE A.BILLDATETIME>=#start
AND A.BILLDATETIME=#start AND D.NEWDATE=#start AND D2.NEWDATE'ID'
Group by
A.ACCOUNT,
B.MEDICAREID,
A.CATEGORY
) a
JOIN PACWARE.ADS.PMDME b on a.CODE = b.CODE_
GROUP BY b.RFCODE
) d on a.CODE_ = d.rfcode
LEFT OUTER JOIN event.dbo.employee_slscode e on a.SLSCODE = e.slscode
JOIN event.dbo.employee f on e.employee_id = f.id
JOIN event.dbo.referral_data g on a.CODE_ = g.CODE_
JOIN event.dbo.referral_type h on g.referral_type_id = h.id
WHERE total > 0
I would try creating first and index just for the colum REGDATETIME on PACWARE.ADS.PMDME table.
GO
CREATE NONCLUSTERED INDEX [IX_PMDME_REGDATETIME] ON PACWARE.ADS.PMDME
(
[REGDATETIME] ASC
)
GO
Test how it works. I would also test adding another index to the column RFCODE (same table) if the selectivity of the column is good enough.
Dim ds = From a In db.Model
Join b In db.1 On a.id Equals b.ID
Join c In db.2 On a.id Equals c.ID
Join d In db.3 On a.id Equals d.ID
Join f In db.4 On a.id Equals f.ID
Select a.id, a.Ref, a.Type, a.etc
Above is my linq query. At the moment I am only getting the first row from the db returned when there are currently 60 rows. Please can you tell me where I am going wrong and how to select all records.
Thanks in advance!
UPDATE:
When I take out all the joins like so:
Dim ds = From a In db.1, b In db.2, c In db.3, d In db.4, f In db.5
Select a.id, a.Ref, a.type, b.etc, c.etc, d.etc
I get a system.outofmemory exception!
You're only going to get a row produced when all of the joins match - in other words, when there's a row from Model with an AP, an Option, a Talk and an Invoice. My guess is that there's only one of those.
LINQ does an inner join by default. If you're looking for a left outer join (i.e. where a particular row may not have an Invoice, or a Talk etc) then you need to use a group join, usually in conjunction with DefaultIfEmpty.
I'm not particularly hot on VB syntax, but this article looks like it's what you're after.