Creating SELECT Query Which Involves Getting FIRST Occurrence

Apr 25, 2014

I have a problem creating a SELECT query which involves getting the FIRST occurrence, the SUMS and the LAST occurrence of a selected row. I have two tables A and B which has the following data:

Table A

----------------------------------------------------------------
|Item ID | Item Name | Item Description | Current Quantity |
----------------------------------------------------------------
----1------------Bolts-------------35"----------------20
----2-----------Paint----------GOLD Paint------------30
----3-----------Screws------------30"----------------40
----------------------------------------------------------------

and Table B

--------------------------------------------------------------
|Log ID | Item ID | Beginning | Add | Less | Ending | Date |
--------------------------------------------------------------
---1---------1----------30-------0-----10------20------04-04
---2---------2----------40-------10----10------40------04-04
---3---------3----------50-------5-----10------45------04-04
---4---------1----------20-------0-----0-------20------04-05
---5---------2----------40-------0-----10------30------04-04
---6---------3----------45-------0-----5-------40------04-04
-------------------------------------------------------------

and I have two datetime pickers, one FROM date picker and a TO date picker If a user selects FROM 04-04 TO 04-05...I want a select statement which will select the Item Name and Desc, the BEGINNING QUANTITY (in reference to the FROM DATE), the SUM of Adds and Less and the ENDING QUANTITY (in reference to the To Date) and then group by their Item ID

In this case, it will generate a table like this

----------------------------------------------------------
Item Name | Item Desc | Beginning | Add | Less | Ending |
-----------------------------------------------------------
--Bolts---------35"---------30---------0-----10-----20
--Paint-----Gold Paint------40---------10----20-----30
--Screws-------30"---------50---------5-----15-----40

"SELECT A.Item Name, A,Item Desc, B.Beginning=(select B.Beginning from Table B where A.Item ID = B.Item ID AND Date = From Date), SUM(B.ADD), SUM(B.LESS), B.Ending=(select B.Ending from Table B where A.Item ID = B.Item ID and Date = To Date) WHERE A.Item ID = B.Item ID and Date(B.Date)>From Date AND Date(B.Date)< To Date group by B.Item ID order by A.Item Name, Item Desc"

My query returns the right Item Name, Desc, the Sum of Add and Less.My problem is that I can't get the value of my beginning and ending.I think I have a problem in A.Item ID = B.Item ID. As I tried a fixed value condition, (B.Item ID = 2), it will get the right result), I'm guessing the program is not getting A.Item ID.

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I've got a view that creates a parent child relationship, this view isused in Analysis Services to create a dimension in a datastore. Thisquery tends to deadlock after about 10 days of running smoothly. Onlyway to fix it is to reboot the box, I can recycle the services for aquick fix but that usually only works for the next 1-2 times I call theview.This view is used to create a breakdown of the bill-to locations fromContinent-Global Region-Country-Sub Region-State/Province- City-ZipCodeYes, I know that sounds crazy, but it was a requirement.So why would I get a deadlock on a SELECT Query? Is there a way to setthe Isolation level to Repeatable Read for a view?Here is the view code:CREATE View dbo.vwBillToas-- US ZipCodeSelect 'Parent'=z.City+' ('+ ISNULL(RTRIM(z.State_shrt), '0') +cast(IsNull(z.US_Region_wk,0) as varchar) + ')',z.Zipcode_WK as 'Child',z.ZipCode_WK as 'Child_ID'Fromdbo.DIM_POSTAL_CODES_US zinnerjoin dbo.FACT_SALES fonz.ZipCode_WK=f.Bill_ToWherez.US_Region_wk IS NOT NULLGroupby z.City,z.ZipCode_WK,US_Region_wk, z.State_shrtUnion--CitySelect 'Parent'=z.State_Long+' ('+cast(IsNull(z.US_Region_wk,0) asvarchar)+')',z.City as 'Child',z.City + ' ('+ ISNULL(RTRIM(z.State_shrt), '0') +cast(IsNull(z.US_Region_wk,0) as varchar) + ')' as 'Child_ID'Fromdbo.DIM_POSTAL_CODES_US zWherez.US_Region_wk IS NOT NULLGroupby z.State_Long,z.City,z.State_shrt,z.US_Region_wkUnion-- Canada ZipCodeSelect 'Parent'=z.City+ ' ('+ ISNULL(RTRIM(z.province_shrt), '0') +')',z.Zipcode_WK as 'Child',z.Zipcode_WK as 'Child_ID'Fromdbo.DIM_POSTAL_CODES_CAN zinnerjoin dbo.FACT_SALES fonz.ZipCode_WK=f.Bill_ToGroupby z.Province_Long,z.ZipCode_WK, z.City, z.province_shrtUnion--CitySelect 'Parent'=z.Province_Long,z.City as 'Child',z.City+ ' ('+ ISNULL(RTRIM(z.province_shrt), '0') + ')' as'Child_ID'Fromdbo.DIM_POSTAL_CODES_CAN zinnerjoin dbo.FACT_SALES fonz.ZipCode_WK=f.Bill_ToGroupby z.Province_Long,z.ZipCode_WK, z.City, z.province_shrtUnion-- Canada ProvinceSelect 'CANADA',Province_Long,Province_LongFromdbo.DIM_POSTAL_CODES_CANGroupby Province_LongUnion-- CountrySelect t.Region_NK,c.Country_Name,c.Country_NameFromdbo.DIM_COUNTRY cInnerJoin dbo.DIM_WORLD_REGION tOnc.Region_WK=t.Region_WKWherec.Country_Name Is Not NullGroup by t.Region_NK, c.Country_NameUnion-- SubRegionSelect c.Country_Name,sr.US_Region_Name,sr.US_Region_NameFromdbo.DIM_US_REGION srInnerJoin dbo.DIM_COUNTRY cOnsr.Country_wk=c.Country_WKGroupby c.Country_Name, sr.US_Region_NameUnion--RegionSelect sr.US_Region_Name,c.State_Long,c.State_Long+' ('+cast(c.US_Region_wk as varchar)+')'Fromdbo.DIM_US_REGION srInnerJoin dbo.DIM_POSTAL_CODES_US cOnsr.US_Region_WK=c.US_Region_WKGroupby sr.US_Region_Name, c.State_Long,c.US_Region_wkUnion-- ContinentSelect Null,Region_NK,Region_NK[color=blue]>From dbo.DIM_WORLD_REGION[/color]WhereRegion_NK Is Not Null

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SQL Server 2012 :: Get Latest Occurrence Of X Month?

Jan 17, 2014

I'm trying to find the most succinct way to get the last occurrence of April 1st given a date.

At the moment I'm using this:

DECLARE @Date DATE = '20131217'
SELECT CONVERT(DATE, CAST(DATEPART(YEAR,
IIF(
--If we're at the start of a year
--we'll need to go back a year
DATEPART(MONTH, @Date) IN (1,2,3),
DATEADD(YEAR, - 1, @Date),
@Date
)) AS VARCHAR(4)) + '0401')

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