How to avoid repeating a field value in access query result - database

I have the below tables in my DB.
Orders:
OrderNo.........ItemNo........OrderQty
1000________10_________10
2000________20_________10
VendorPO:
OrderNo.........ItemNo........VendorPO........POQty
1000________10_________100__________5
2000________20_________100__________7
2000________20_________200__________3
And I used this Query:
SELECT Order.OrderNo, Order.ItemNo, Order.OrderQty, VendorPO.VendorPO, VendorPO.POQty
FROM [Order]
INNER JOIN VendorPO ON (Order.ItemNo = VendorPO.ItemNo)
AND (Order.OrderNo = VendorPO.OrderNo);
With these results:
Query Result
OrderNo.........ItemNo........OrderQty........VendorPO........POQty
1000________10__________10_________100__________5
2000________20__________10_________100__________7
2000________20__________10_________200__________3
I want to avoid repetition of the quantity in the query result, where Item quantity 10 is repeated twice against two PO reference with POQty 3 and 7.
I appreciate your support on finding a way to avoid order quantity repetition.

Related

Peewee select query with multiple joins and multiple counts

I've been attempting to write a peewee select query which results in a table with 2 counts (one for the number of prizes associated with the lottery, and the for the number of packages associated with the lottery), as well as the fields in the Lottery model.
I've managed to write select queries with 1 count working (seen below), and then I've had to convert the ModelSelects to lists and join them manually (which I think is very hacky).
I did manage to write a select query where the results were joined, but it would multiply the packages count with the prizes count (I've since lost that query).
I also tried using a .switch(Lottery) but I didn't have any luck with this.
query1 = (Lottery.select(Lottery,fn.count(Package.id).alias('packages'))
.join(LotteryPackage)
.join(Package)
.order_by(Lottery.id)
.group_by(Lottery)
.dicts())
query2 = (Lottery.select(Lottery.id.alias('lotteryID'), fn.count(Prize.id).alias('prizes'))
.join(LotteryPrize)
.join(Prize)
.group_by(Lottery)
.order_by(Lottery.id)
.dicts())
lottery = list(query1)
query3 = list(query2)
for x in range(len(lottery)):
lottery[x]['prizes'] = query3[x]['prizes']
While the above code works, is there a cleaner way to write this query?
Your best bet is to do this with subqueries.
# Create query which gets lottery id and count of packages.
L1 = Lottery.alias()
subq1 = (L1
.select(L1.id, fn.COUNT(LotteryPackage.package).alias('packages'))
.join(LotteryPackage, JOIN.LEFT_OUTER)
.group_by(L1.id))
# Create query which gets lottery id and count of prizes.
L2 = Lottery.alias()
subq2 = (L2
.select(L2.id, fn.COUNT(LotteryPrize.prize).alias('prizes'))
.join(LotteryPrize, JOIN.LEFT_OUTER)
.group_by(L2.id))
# Select from lottery, joining on each subquery and returning
# the counts.
query = (Lottery
.select(Lottery, subq1.c.packages, subq2.c.prizes)
.join(subq1, on=(Lottery.id == subq1.c.id))
.join(subq2, on=(Lottery.id == subq2.c.id))
.order_by(Lottery.name))
for row in query.objects():
print(row.name, row.packages, row.prizes)

Ignoring Nulls using Lag() in SQL Server 2018

I am trying to get the Activity ID linked to Dispatch. In the data Attrib_43 will only get populated if Dispatch is created.
What i am looking to do is to get the Activity ID of the previous row before the Dispatch created.
Attached is the code that i am using
Select sea.ROW_ID, sea.CREATED_DTTM,sea.SRA_SR_ID,sea.ATTRIB_43, tsk.CRT_DTS, tsk.TASK_DESC, datediff(ss,sea.CREATED_DTTM, tsk.CRT_DTS) as dd
, seal.x_isp_notes, seal.x_isp_comments, seal.comments, seal.x_isp_agent_desc
, tsk.TASK_SUB_TYPE_CD, tsk.TASK_TYPE_CD, tsk.WHAT_ID
, cdl.ORIGIN_NM
,LAG(sea.ROW_ID,1) over (partition by sea.ATTRIB_43 order by sea.CREATED_DTTM) AS 'FLAGID'
--, tsk.*,
, fdc.FISCAL_QUARTER
from GSEDATA.dbo.X_ISP_EXTRNL_CASE_ID sea
join rawdata.corp_ww.FISCAL_DAY_CALENDAR fdc on sea.CREATED_DATE = fdc.ACTUAL_DATE
left join rawdata.svc_base.SFDC_TASK_DTL tsk on sea.X_ISP_EXTRNL_CASE_ID = tsk.TASK_ID
left join rawdata.svc_base.SFDC_CASE_DTL cdl on cdl.case_id = tsk.what_id
left join GSEDATA.dbo.s_evt_act_logs seal on sea.ROW_ID = seal.row_id
where --sea.ATTRIB_43 = '04391481876'
sea.SRA_SR_ID = 'A-2Q7YF57W'
order by sea.CREATED_DTTM
But it is not working as per my Expectation - Activity ID flag for Attrib 43 is coming as Null
If I understand your question correctly, you are getting null FLAGID for non- null attrib_43 becuase you are using a partition by sea.ATTRIB_43 clause.
Partition by divides the query result set into partitions. The window function is applied to each partition separately and computation restarts for each partition.
That is why the null values for ATTRIB_43 are grouped into one window and the non-null ATTRIB_43 will have a separate window for each distinct value, therefore giving a NULL for LAG() function in the first row of each window.
you should remove the clause partition by sea.ATTRIB_43 if you want lag values for all rows.
LAG(sea.ROW_ID,1) over (order by sea.CREATED_DTTM) AS 'FLAGID'

need to know how to remove duplicate rows from SQL to fetch data from a variety of tables;

I need data from a variety of tables and below is the only way I know to do it (I just know the basics). The query below works fine but shows duplicates. I need to know how to remove those.
SELECT DISTINCT
a.int_order_id, a.trans_id, a.wtn,a.isp_id,
d.first_name, d.middle_initial, d.last_name,
d.company_name, d.emaiL,
a.ilec_lob, a.node_type_id, a.cddd,
a.isp_ban, a.tos_version, a.isp_ckt_id,
a.isp_circuit_type, a.atm_vpi, a.atm_vci,
a.frs_dlci, b.order_create_date, b.pon,
b.order_status_id, e.trans_status_id,
e.description, c.STREET_NUMBER,
c.STREET_NUMBER_SUFFIX, c.DIRECTIONAL_ID,
c.street_name, c.thoroughfare_id,
c.street_suffix, c.address_line1, c.address_line2,
c.unit_type_id, c.unit_value, c.city, c.state_id, c.zip
FROM
VZEXTRACT1.vvov_os_ord_dsl A
JOIN
VZEXTRACT1.vvov_os_order_details B ON a.int_order_id = b.int_order_id
JOIN
VZEXTRACT1.vvov_os_ord_address C ON b.int_order_id = c.int_order_id
JOIN
vzextract1.vvov_os_ord_contact D ON c.int_order_id = d.int_order_id
JOIN
VZEXTRACT1.vv0v_trans_status E On b.order_status_id = e.trans_status_id
WHERE
a.isp_id NOT IN (657,500)
AND B.ORDER_CREATE_DATE >= to_date('01-may-15')
AND B.ORDER_CREATE_DATE < to_date('30-JUL-15')
When you want to remove duplicate rows you will have to use
Distinct : It will consider distinct of all selected columns so you will have to find out because of which column you are getting duplicate rows even if you have used distinct
Group by : You can use group by clause to get distinct rows. You can use aggregate function for column causing duplicate rows from point 1 and avoid duplicates.
over(partition by) : you can also use this clause for column causing duplicates. Like you concat values of such column ,
wm_concat(my_col)over(partition by id)

Using Multiple "Layered" SQL Server queries with parameters in Access

I have tried to find answers to this question on the net but am not really getting anywhere.
I tried to do screen shots but don't have enough rep. Anyway.
Here is my current query structure.
Tables:
tblInventoryItems(intSerial, intItem, intStyle) -This is the list of current items that are on inventory(built or unbuilt)
tblLocations(intLocationID, chrLocationName, intLotType)
tblItemStyles(intItemStyleID, intBasic Style)
tblItemList(intItemID, intType, intSubtype, intStyle)
tblCommissions(intBuildEvent, intItemType, intItemSubtype)
tblBuildEvents(intSerial, intBuildEventType, dtEventDate)
First Set of Queries
qryCompletedBarns:
SELECT dbo.tblInventoryItems.intSerial,dbo.tblBuildEvents.dtEventDate
FROM dbo.tblItemList
INNER JOIN dbo.tblItemStyles ON
dbo.tblItemList.intStyle = dbo.tblItemStyles.intBasicStyle
INNER JOIN dbo.tblInventoryItems ON
dbo.tblItemList.intItemID = dbo.tblInventoryItems.intItem AND
dbo.tblItemStyles.intItemStyleID = dbo.tblInventoryItems.intStyle
INNER JOIN dbo.tblCommissions ON
dbo.tblItemList.intSubType = dbo.tblCommissions.intItemSubtype
AND dbo.tblItemList.intType = dbo.tblCommissions.intItemType
INNER JOIN dbo.tblBuildEvents ON
dbo.tblBuildEvents.intBuildEventType = dbo.tblCommissions.intBuildEvent AND
dbo.tblInventoryItems.intSerial = dbo.tblBuildEvents.intSerial
WHERE (dbo.tblCommissions.ynCompletesBarn = 1)
So First we select all items that have a build event that qualifies them as completed. An item can have multiple build events but there is only one that qualifies it as completed
qryCompletedBarnDateFilter:
SELECT qryCompletedBarns.intSerial, qryCompletedBarns.dtEventDate
FROM qryCompletedBarns
WHERE (((qryCompletedBarns.dtEventDate)<=InventoryDate()));
Then we jump to Access and filter those results by a UDF that pulls the criteria for the build date of the item(Saved report definitions are stored in a table).
Now, we have a list of all Inventory items that meet the first criteria, which is that they must be built on or before the Inventory Date that the user selects.
Second set of queries:
qryInventoryLogDateFilter:
SELECT tblHaulLogs.*, tblHaulLogs.dtmHaulDate
FROM tblHaulLogs
WHERE (((tblHaulLogs.dtmHaulDate)<=InventoryDate()));
Get all the Haullogs (or you could call them inventory transactions) that are equal to or older than the InventoryDate criteria.
qryLastLogForBarn:
SELECT t1.intSerial, t1.intHaulType, t1.intDestinationSource, t1.intDestination
FROM qryInventoryLogDateFilter AS t1
LEFT JOIN qryInventoryLogDateFilter AS t2
ON (t1.intLogID < t2.intLogID) AND (t1.intSerial = t2.intSerial)
WHERE t2.intLogID IS NULL;
Get the last inventory transaction for each Inventory Item. This query is actually very fast when executed on the server natively.
qryInventoryCurrentCustomer:
SELECT tblSales.intSerial, tblCustomers.chrFirstName + ' ' + tblCustomers.chrLastName
AS chrCustomerName, tblSales.dtSaleDate
FROM tblSales INNER JOIN tblCustomers ON
tblSales.intCustomer = tblCustomers.intCustID
LEFT OUTER JOIN tblHaulLogs ON
tblSales.intSaleID = tblHaulLogs.intOrigon
WHERE (tblHaulLogs.intHaulType IS NULL) AND (tblSales.bolSaleCancelled = 0)
OR (tblHaulLogs.intHaulType <> 3) AND
(tblSales.intOrderType <4) AND (tblSales.bolSaleCancelled = 0)
GROUP BY tblSales.intSerial, tblCustomers.chrFirstName + ' ' + tblCustomers.chrLastName,
tblSales.dtSaleDate, tblSales.intOrderType;
This query does not actually return an "Inventory Item" but rather checks the sales table and returns a customer name if the inventory item was sold.
Now we finally join the two "sections" and the "Current Customer Query":
SELECT qryCompletedBarnDateFilter.intSerial, qryLastLogForBarn.intHaulType,
IIf(IsNull([intDestination]),7,[intDestination]) AS Location,
qryInventoryCurrentCustomer.chrCustomerName,
qryInventoryCurrentCustomer.dtSaleDate, qryCompletedBarnDateFilter.dtEventDate
FROM (qryCompletedBarnDateFilter
LEFT JOIN qryLastLogForBarn
ON qryCompletedBarnDateFilter.intSerial = qryLastLogForBarn.intSerial)
LEFT JOIN qryInventoryCurrentCustomer
ON qryCompletedBarnDateFilter.intSerial = qryInventoryCurrentCustomer.intSerial
WHERE (((qryLastLogForBarn.intDestinationSource)=1
Or (qryLastLogForBarn.intDestinationSource) Is Null));
Then we join to the "Locations" table to get the name of the inventory item's location, and also filter out a certain type of location.
qryRetailBarnsOnInventory:
SELECT qryBarnsOnInventory.intSerial, qryBarnsOnInventory.Location,
tblLocations.chrLocationName, qryBarnsOnInventory.chrCustomerName,
qryBarnsOnInventory.dtEventDate, qryBarnsOnInventory.intHaulType
FROM tblLocations
INNER JOIN qryBarnsOnInventory
ON tblLocations.intLocationID = qryBarnsOnInventory.Location
WHERE (((tblLocations.intLotType)=1));
The Final Query:
SELECT tblItemStyles.chrItemStyle, tblInventoryItems.intSerial,
tblItemSizeList.intItemSize, tblItemPrices.ccyPrice,
tblInventoryItems.txtOptions, qryRetailBarnsOnInventory.chrCustomerName,
qryRetailBarnsOnInventory.dtEventDate, qryRetailBarnsOnInventory.intHaulType,
qryRetailBarnsOnInventory.chrLocationName, tblItemList.intType,
tblItemList.intSubType, tblItemList.intStyle, tblItemSizes.intItemSizeID,
tblItemStyles.intItemStyleID, tblItemPrices.intPriceSheet,
tblInventoryItems.bolinTransit
FROM tblItemSizeList INNER JOIN (tblItemSizes INNER JOIN
(qryRetailBarnsOnInventory INNER JOIN (((tblItemList INNER JOIN
tblItemPrices ON tblItemList.intItemID = tblItemPrices.intItemID)
INNER JOIN tblItemStyles ON tblItemList.intStyle = tblItemStyles.intBasicStyle)
INNER JOIN tblInventoryItems
ON (tblItemList.intItemID = tblInventoryItems.intItem)
AND (tblItemStyles.intItemStyleID = tblInventoryItems.intStyle))
ON qryRetailBarnsOnInventory.intSerial = tblInventoryItems.intSerial)
ON tblItemSizes.intItemSizeID = tblItemList.intSize)
ON tblItemSizeList.intItemSizeID = tblItemSizes.intSize
WHERE (((tblItemList.intType) Like ItemType())
AND ((tblItemList.intSubType) Like ItemSubType())
AND ((tblItemList.intStyle) Like BasicStyle())
AND ((tblItemSizes.intItemSizeID) Like ItemSize())
AND ((tblItemStyles.intItemStyleID) Like SubStyle())
AND ((tblItemPrices.intPriceSheet)=1)
AND ((tblInventoryItems.bolinTransit)=False)
AND ((IIf(IsNull([intHaulType]),2,3)) Like NewUsed())
AND ((IIf(IsNull([chrCustomerName]),2,3)) Like IsSold())
AND ((qryRetailBarnsOnInventory.Location) Like LotID()));
Summary:
In plain English, here is what I want to happen:
Get all Inventory Items from the inventory items table that were completed on or before the date criteria, then get the last inventory transaction on or before the date criteria for each of those items. And then filter by additional criteria that the user provides
I have the correct results but it is SLOW! Like 10-15 seconds. And we do a tremendous amount of queries every day.
What my idea was is to put this all on SQL Server in sprocs or views. If I do this all with views on SQL server and type manual criteria in, it's blazing fast. The problem I have is that every query requires a parameter. Not just the last one. I can pass parameters for the last query all right with a passthrough query but how do I pass the date criteria parameters for the first query?
EDIT:
Would it be possible to get the date criteria from another table? The criteria is stored in another table in the DB. If I could perform some kind of lookup to get that value and use it as the criteria that would make life really simple.

SQL Server LEFT JOIN

This query has been keeping me busy for the last couple of days. I tried to rewrite it with different ideas but I keep having the same problem. To simplify the problem I put part of my query in a view, this view returns 23 records. Using a left join I would like to add fields coming from the table tblDatPositionsCalc to these 23 records. As you can see I have an additional condition on the tblDatPositionsCalc in order to only consider the most recent records. With this condition it would return 21 records. The join should be on two fields together colAccount and colId.
I simply want the query to return the 23 records from the view and where possible have the information from tblDatPositionsCalc. There is actually only 2 records in the view without corresponding id and account in tblDatPositionsCalc, that means out of the 23 records only 2 will have missing values in the fields coming from the table tblDatPositionsCalc.
The problem with my query is that it only returns the 21 records from tblDatPositionsCalc. I don't understand why. I tried to move the condition on date in just after the JOIN condition but that did not help.
SELECT TOP (100) PERCENT
dbo.vwCurrPos.Account,
dbo.vwCurrPos.Id,
dbo.vwCurrPos.TickerBB,
dbo.vwCurrPos.colEquityCode,
dbo.vwCurrPos.colType,
dbo.vwCurrPos.colCcy,
dbo.vwCurrPos.colRegion,
dbo.vwCurrPos.colExchange,
dbo.vwCurrPos.[Instr Type],
dbo.vwCurrPos.colMinLastDay,
dbo.vwCurrPos.colTimeShift,
dbo.vwCurrPos.Strike,
dbo.vwCurrPos.colMultiplier,
dbo.vwCurrPos.colBetaVol,
dbo.vwCurrPos.colBetaEq,
dbo.vwCurrPos.colBetaFloor,
dbo.vwCurrPos.colBetaCurv,
dbo.vwCurrPos.colUndlVol,
dbo.vwCurrPos.colUndlEq,
dbo.vwCurrPos.colUndlFut,
tblDatPositionsCalc_1.colLots,
dbo.vwCurrPos.[Open Positions],
dbo.vwCurrPos.colListMatShift,
dbo.vwCurrPos.colStartTime,
tblDatPositionsCalc_1.colPrice,
tblDatPositionsCalc_1.colMktPrice,
dbo.vwCurrPos.colProduct,
dbo.vwCurrPos.colCalendar,
CAST(dbo.vwCurrPos.colExpiry AS DATETIME) AS colExpiry,
dbo.vwCurrPos.colEndTime,
CAST(tblDatPositionsCalc_1.colDate AS datetime) AS colDate,
dbo.vwCurrPos.colFund,
dbo.vwCurrPos.colExchangeTT,
dbo.vwCurrPos.colUserTag
FROM dbo.vwCurrPos
LEFT OUTER JOIN dbo.tblDatPositionsCalc AS tblDatPositionsCalc_1
ON tblDatPositionsCalc_1.colId = dbo.vwCurrPos.Id
AND tblDatPositionsCalc_1.colAccount = dbo.vwCurrPos.Account
WHERE (tblDatPositionsCalc_1.colDate =
(SELECT MAX(colDate) AS Expr1 FROM dbo.tblDatPositionsCalc))
ORDER BY
dbo.vwCurrPos.Account,
dbo.vwCurrPos.Id,
dbo.vwCurrPos.colEquityCode,
dbo.vwCurrPos.colRegion
Any idea what might cause the problem?
(Option 1) DrCopyPaste is right so your from clause would look like:
...
FROM dbo.vwCurrPos
LEFT OUTER JOIN dbo.tblDatPositionsCalc AS tblDatPositionsCalc_1
ON tblDatPositionsCalc_1.colId = dbo.vwCurrPos.Id
AND tblDatPositionsCalc_1.colAccount = dbo.vwCurrPos.Account
and (tblDatPositionsCalc_1.colDate =
(SELECT MAX(colDate) AS Expr1 FROM dbo.tblDatPositionsCalc))
...
reason: the where clause restriction of left joined to column = some expression with fail to return for "null = something" so the row will be removed.
(Option 2) As oppose to pushing code in to additional views where it is harder to maintain you can nest sql select statements;
select
X.x1,X.x2,
Y.*
from X
left join
(select Z.z1 as y1, Z.z2 as y2, Z.z3 as y3
from Z
where Z.z1 = (select max(Z.z1) from Z)
) as Y
on x.x1 = Y.y1 and X.x2 = Y.y2
The advantage here is you check each nested sub query a move out quickly. Although if you still building up more logic check out common table expressions (CTE's) http://msdn.microsoft.com/en-us/library/ms175972.aspx

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