Eliminating Combinatorial Relationship Multiplication
Jul 20, 2005
Suppose I have users that can belong to organizations. Organizations
are arranged in a tree. Each organization has only one parent
organization but a user maybe a member of multiple organizations.
The problem that I'm facing that both organizations and individual
users may have relationships with other entities which are
semantically the same. For instance, an individual user can purchase
things and so can an organization. An individual user can have
business partners and so can an organization. So it seems that I would
need to have a duplicate set of link tables that link a user to a
purchase and then a parallel link table linking an organization to a
purchase. If I have N entities with which both users and organizations
may have relationships then I need 2*N link tables. There is nothing
wrong with that per se but just not elegant to have two different
tables for a relationship which is the same in nature, e.g.
purchaser->purchaseditem.
One other approach I was thinking of is to create an intermediate
entity (say it's called "holder") that will be used to hold references
to all the relationships that both an organization and an individual
may have. There will be 2 link tables linking organizations to
"holder" and users to "holder". Holder will in turn reference the
purchases, partners and so on. In this case the number of link tables
will be N+2 as opposed to 2*N but it will have a performance cost of
an extra join.
Is there a better way of modelling this notion of 2 different entities
that can possess similar relationships with N other entities?
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Feb 7, 2006
what is the value when running sql script?
select cast(cast(.0000006 as numeric(38,10)) * cast(1.0 as numeric(38,10)) as numeric(38,10))
the result is .0000010000.
why the result is not .0000006000?
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Nov 28, 2007
When I run the following code :
DECLARE @var1 float,
@var2 int;
SET @var1 = 32.91 ;
SET @var2 = 100 ;
SELECT CAST(@var1 * @var2 AS int);
the result is ... 3290 (whereas it should be 3291 !)
Also works for @var1 set to 33.91 34.91 35.91 36.91 37.91 38.91 39.91 but not for other values > 40.
Is that a SQL Server bug ?
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May 20, 2008
Does multiplication with 1 affect query performance?I have a a stored procedure that converts results to another unit if required. In alternative 1 below, the results are returned with a separate select statement if no conversion is necessary - in other words, no multiplication with a conversion factor is required. However, the code is not very nice since I need to repeat the select statement again in case a conversion is required, this time including the conversion factor.Alternative 2 uses cleaner-looking code. The conversion factor is set to 1 if no conversion is required, and a single SELECT statement is used to return the data. The @factor variable is defined as a float.I would rather use alternative 2, but I wonder if there is any performance penalty for doing that if no conversion is required since the results are always multiplied with the @factor? Or can SQL server somehow understand that @factor = 1 and no multiplication is required?--- Alternative 1: ---IF @fromunit_sid = @tounit_sid-- Return unconverted results
SELECT ISNULL(ls_totalWaterConsumption,0) AS ls_totalWaterConsumption,ls_theoreticalWaterConsumption AS ls_theoretical_WaterConsumption,ls_totalWaterConsumption - ls_theoreticalWaterConsumption AS ls_extra_WaterConsumption FROM Results WHERE scenario_id = @scenario_idELSEBEGIN
-- Get conversion factor
EXEC getConversionFactor @fromunit_sid, @tounit_sid, @factor OUTPUT -- Get the converted results
SELECT ISNULL(ls_totalWaterConsumption * @factor,0) AS ls_totalWaterConsumption, ls_theoreticalWaterConsumption * @factor AS ls_theoretical_WaterConsumption, (ls_totalWaterConsumption - ls_theoreticalWaterConsumption) * @factor AS ls_extra_WaterConsumptionFROM Results WHERE scenario_id = @scenario_idEND --- Alternative 2: ---IF @fromunit_sid = @tounit_sidSET @factor = 1ELSE
-- Get conversion factor
EXEC getConversionFactor @fromunit_sid, @tounit_sid, @factor OUTPUT
-- Get the converted results
SELECT ISNULL(ls_totalWaterConsumption * @factor,0) AS ls_totalWaterConsumption, ls_theoreticalWaterConsumption * @factor AS ls_theoretical_WaterConsumption, (ls_totalWaterConsumption - ls_theoreticalWaterConsumption) * @factor AS ls_extra_WaterConsumptionFROM Results WHERE scenario_id = @scenario_id And another question: is using an IF function considerably faster than making a call to another stored procedure?In alternative 2 above I use an IF statement to check if @fromunit_sid = @tounit_sid, and . But in fact the function getConversionFactor that I'm calling does exactly the same thing: if I pass in identical from- and to-values, it simply returns 1, so I could omit the IF statement completely and just use alternative 3. But is it slower?--- Alternative 3 -- Get conversion factor
EXEC getConversionFactor @fromunit_sid, @tounit_sid, @factor OUTPUT
-- Get the converted results
...
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Jun 15, 2004
Hi all...I have a friend who has a problem I'm trying to help with (no...REALLY...it's a FRIEND, not ME!!! *LOL*)
I haven't run across the need...but in a nutshell...we have a table with many rows of data, one column in each row needs to be multiplied by all other same-columns in the table's other rows.
For example...
MyKey int, MyFloat float(53)
I want to multiply Myfloat by all other Myfloat columns in the table.
Similar to SUM(MyFloat) but something like PRODUCT(MyFloat).
Is there a aggregate kept in a basement closet somewhere, or a way to perform this operation rather than using a cursor to do it:
An example of my table:
1 3.2
2 4.1
3 7.1
if I could do a PRODUCT(MyFloat) I would want the result to be (3.2 X 4.1 X 7.1) or 93.152
Do I have to do this with a cursor?
Thanks!
Paul
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Mar 30, 2012
I am currently building a website to deal with different product information and sales with php. I am using SQL to sort the database and pull out information.
The final thing i need to do is work out the total revenue of each product however the problem i am having is that the 'Price' column and 'SalesVolume' column are in two different tables and they need to be multiplied together.
The two tables and column headings are as follows:
Product
ID
Name
Price
MonthlySales
ID
ProductCode
Month
Year
SalesVolume
(ID and ProductCode are linked together in a relationship)
I cannot see anything wrong with the syntax in my query however i believe there is.
Here is the query I am using:
Code:
"SELECT SUM(Products.Price * SUM(MonthlySales.SalesVolume)) as revenue FROM Products
INNER JOIN MonthlySales ON(Products.ProductCode = MonthlySales.id) GROUP BY Products.ProductCode";
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Aug 24, 2015
I'm trying to create a case statement that if a field = a certain code, I'd like to take another field * 0.9. But, I'm getting a Null value for the answer..here is the statement:,case when parts.ndc = '50242-0138-01' then labels.BAGSDISP*0.9 end "Units Dispensed"..For this example labels.BAGSDISP is a value of 2. So, in theory it should be 2 * 0.9 and the result should be 1.8 but I'm getting a NULL
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Mar 25, 2006
How can I create a one-to-one relationship in a SQL Server Management Studio Express Relationship diagram?
For example:
I have 2 tables, tbl1 and tbl2.
tbl1 has the following columns:
id {uniqueidentifier} as PK
name {nvarchar(50)}
tbl2 has the following columns:
id {uniqueidentifier} as PK
name {nvarchar(50)}
tbl1_id {uniqueidentifier} as FK linked to tbl1.id
If I drag and drop the tbl1.id column to tbl2 I end up with a one-to-many relationship. How do I create a one-to-one relationship instead?
mradlmaier
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Oct 14, 2015
I have four tables with relationships as shown. They have a circular relationship and so one of the relationships is forced to be inactive.
Operation (Commodity, OperationKey) ==========>
Commodity (Commodity)
/
/
|
|
Advice (OperationKey) ====== (inactive)=======>
Operation Commmodity (Commodity, OperationKey)
I have the following measure:
Advice No. Commodity:=CALCULATE (
COUNTROWS ( 'Advice' ),
USERELATIONSHIP(Advice[OperationKey],'Operation Commodity'[OperationKey]),
operation
)
However, the userelationship function does not override the active relationship between Operation & Advice and so the measure is limited to Advices directly filtered by the Operation table.
If I delete the relationship between Operation and Advice, then the measure works as expected i.e. Operation indirectly filters Operation Commodity which filters Advice.
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Feb 11, 2005
Have a pretty simple wuestion but the answer seems to be evading me:
Here's the DDL for the tables in question:
CREATE TABLE [dbo].[Office] (
[OfficeID] [int] IDENTITY (1, 1) NOT NULL ,
[ParentOfficeID] [int] NOT NULL ,
[WebSiteID] [int] NOT NULL ,
[IsDisplayOnWeb] [bit] NOT NULL ,
[IsDisplayOnAdmin] [bit] NOT NULL ,
[OfficeStatus] [char] (1) NOT NULL ,
[DisplayORD] [smallint] NOT NULL ,
[OfficeTYPE] [varchar] (10) NOT NULL ,
[OfficeNM] [varchar] (50) NOT NULL ,
[OfficeDisplayNM] [varchar] (50) NOT NULL ,
[OfficeADDR1] [varchar] (50) NOT NULL ,
[OfficeADDR2] [varchar] (50) NOT NULL ,
[OfficeCityNM] [varchar] (50) NOT NULL ,
[OfficeStateCD] [char] (2) NOT NULL ,
[OfficePostalCD] [varchar] (15) NOT NULL ,
[OfficeIMG] [varchar] (100) NOT NULL ,
[OfficeIMGPath] [varchar] (100) NOT NULL ,
[RegionID] [int] NOT NULL ,
[OfficeTourURL] [varchar] (255) NULL ,
[GeoAreaID] [int] NOT NULL ,
[CreateDT] [datetime] NOT NULL ,
[UpdateDT] [datetime] NOT NULL ,
[CreateByID] [varchar] (50) NOT NULL ,
[UpdateByID] [varchar] (50) NOT NULL ,
[OfficeBrandedURL] [varchar] (255) NULL
) ON [PRIMARY]
GO
CREATE TABLE [dbo].[OfficeManagement] (
[OfficeID] [int] NOT NULL ,
[PersonnelID] [int] NOT NULL ,
[JobTitleID] [int] NOT NULL ,
[CreateDT] [datetime] NOT NULL ,
[CreateByID] [varchar] (50) NOT NULL ,
[SeqNBR] [int] NOT NULL
) ON [PRIMARY]
GO
CREATE TABLE [dbo].[OfficeMls] (
[OfficeID] [int] NOT NULL ,
[SourceID] [int] NOT NULL ,
[OfficeMlsNBR] [varchar] (20) NOT NULL ,
[CreateDT] [datetime] NOT NULL ,
[UpdateDT] [datetime] NOT NULL ,
[CreateByID] [varchar] (50) NOT NULL ,
[UpdateByID] [varchar] (50) NOT NULL
) ON [PRIMARY]
GO
CREATE TABLE [dbo].[Personnel] (
[PersonnelID] [int] IDENTITY (1, 1) NOT NULL ,
[PersonnelDisplayName] [varchar] (100) NOT NULL ,
[FirstNM] [varchar] (50) NOT NULL ,
[PreferredFirstNM] [varchar] (50) NOT NULL ,
[MiddleNM] [varchar] (50) NOT NULL ,
[LastNM] [varchar] (50) NOT NULL ,
[PersonalTaxID] [varchar] (9) NOT NULL ,
[HireDT] [datetime] NOT NULL ,
[TermDT] [datetime] NOT NULL ,
[HomePhoneNBR] [varchar] (15) NULL ,
[HomeADDR1] [varchar] (50) NOT NULL ,
[HomeADDR2] [varchar] (50) NOT NULL ,
[HomeCityNM] [varchar] (50) NOT NULL ,
[HomeStateCD] [char] (2) NOT NULL ,
[HomePostalCD] [varchar] (15) NOT NULL ,
[PersonnelLangCSV] [varchar] (500) NOT NULL ,
[PersonnelSlogan] [varchar] (500) NOT NULL ,
[BGColor] [varchar] (50) NOT NULL ,
[IsEAgent] [bit] NOT NULL ,
[IsArchAgent] [bit] NOT NULL ,
[IsOptOut] [bit] NOT NULL ,
[IsDispOnlyPrefFirstNM] [bit] NOT NULL ,
[IsHideMyListingLink] [bit] NOT NULL ,
[IsPreviewsSpecialist] [bit] NOT NULL ,
[AudioFileNM] [varchar] (100) NULL ,
[iProviderID] [int] NOT NULL ,
[DRENumber] [varchar] (10) NOT NULL ,
[AgentBrandedURL] [varchar] (255) NOT NULL ,
[CreateDT] [datetime] NOT NULL ,
[UpdateDT] [datetime] NOT NULL ,
[CreateByID] [varchar] (50) NOT NULL ,
[UpdateByID] [varchar] (50) NOT NULL ,
[IsDisplayAwards] [bit] NOT NULL
) ON [PRIMARY]
GO
CREATE TABLE [dbo].[PersonnelMLS] (
[PersonnelID] [int] NOT NULL ,
[SourceID] [int] NOT NULL ,
[AgentMlsNBR] [varchar] (20) NOT NULL ,
[CreateDT] [datetime] NOT NULL ,
[UpdateDT] [datetime] NOT NULL ,
[CreateByID] [varchar] (50) NOT NULL ,
[UpdateByID] [varchar] (50) NOT NULL
) ON [PRIMARY]
GO
ALTER TABLE [dbo].[Office] ADD
CONSTRAINT [FK_Office_OfficeProfile] FOREIGN KEY
(
[OfficeID]
) REFERENCES [dbo].[OfficeProfile] (
[OfficeID]
) NOT FOR REPLICATION
GO
alter table [dbo].[Office] nocheck constraint [FK_Office_OfficeProfile]
GO
ALTER TABLE [dbo].[OfficeManagement] ADD
CONSTRAINT [FK_OfficeManagement_LookupJobTitle] FOREIGN KEY
(
[JobTitleID]
) REFERENCES [dbo].[LookupJobTitle] (
[JobTitleID]
),
CONSTRAINT [FK_OfficeManagement_Office] FOREIGN KEY
(
[OfficeID]
) REFERENCES [dbo].[Office] (
[OfficeID]
) NOT FOR REPLICATION ,
CONSTRAINT [FK_OfficeManagement_Personnel] FOREIGN KEY
(
[PersonnelID]
) REFERENCES [dbo].[Personnel] (
[PersonnelID]
) ON DELETE CASCADE
GO
alter table [dbo].[OfficeManagement] nocheck constraint [FK_OfficeManagement_Office]
GO
ALTER TABLE [dbo].[OfficeMls] ADD
CONSTRAINT [FK_OfficeMls_Office] FOREIGN KEY
(
[OfficeID]
) REFERENCES [dbo].[Office] (
[OfficeID]
) NOT FOR REPLICATION
GO
alter table [dbo].[OfficeMls] nocheck constraint [FK_OfficeMls_Office]
GO
ALTER TABLE [dbo].[PersonnelMLS] ADD
CONSTRAINT [FK_PersonnelMLS_Personnel] FOREIGN KEY
(
[PersonnelID]
) REFERENCES [dbo].[Personnel] (
[PersonnelID]
) NOT FOR REPLICATION
GO
alter table [dbo].[PersonnelMLS] nocheck constraint [FK_PersonnelMLS_Personnel]
GO
Here's the query I'm having trouble with:
SELECT distinct Personnel.PersonnelID,
Personnel.FirstNM,
Personnel.LastNM,
Office.OfficeNM,
Office.OfficeID,
OfficeMls.SourceID AS OfficeBoard,
PersonnelMLS.SourceID AS AgentBoard
FROM Personnel INNER JOIN
OfficeManagement ON
Personnel.PersonnelID = OfficeManagement.PersonnelID
INNER JOIN
Office ON OfficeManagement.OfficeID = Office.OfficeID
INNER JOIN
OfficeMls ON Office.OfficeID = OfficeMls.OfficeID
INNER JOIN
PersonnelMLS ON Personnel.PersonnelID = PersonnelMLS.PersonnelID
where officemls.sourceid <> personnelmls.sourceid
and office.officenm not like ('%admin%')
group by PersonnelMLS.SourceID,
Personnel.PersonnelID,
Personnel.FirstNM,
Personnel.LastNM,
Office.OfficeNM,
Office.OfficeID,
OfficeMls.SourceID
order by office.officenm
What I'm trying to retrieve are those agents who have source id's that are not in the Office's domain of valid source id's. Here's a small portion of the results:
PersonnelID FirstNM LastNM OfficeNM OfficeID OfficeBoard AgentBoard
----------- -------------------------------------------------- -------------------------------------------------- -------------------------------------------------- ----------- ----------- -----------
18205 Margaret Peggy Quattro Aventura North 650 906 908
18205 Margaret Peggy Quattro Aventura North 650 918 908
15503 Susan Jordan Blackburn Point 889 920 909
15503 Susan Jordan Blackburn Point 889 921 909
15503 Susan Jordan Blackburn Point 889 921 920
15279 Sandra Humphrey Boca Beach North 890 917 906
15279 Sandra Humphrey Boca Beach North 890 906 917
15279 Sandra Humphrey Boca Beaches 626 917 906
15279 Sandra Humphrey Boca Beaches 626 906 917
13532 Michael Demcho Boca Downtown 735 906 917
14133 Maria Ford Boca Downtown 735 906 917
19126 Michael Silverman Boca Glades Road 736 917 906
18920 Beth Schwartz Boca Glades Road 736 906 917
If you take a look at Sandra Humphries, you'll see she's out of office 626. Office 626 is associated with source id's 907 and 916. Sandra Humphries is also associated with those two source id's , but she shows up in the results.
I know this was AWFULLY long winded, but just wanted to make sure made myself as clear as possible.
Any help would be greatly appreciated.
Thanks in advance!
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Aug 9, 2000
Hi,
I have a table with four columns. like id,lastname,
firstname,acctname. I have duplicate values for the three columns other
than id column. like
ID FirstNameLastname Acctname
1 john hopkins jh
2 john hopkins Jh
3 david webb dw
4 david webb dw
5 david webb dw
6 Dan Kennedy DK
I want to eliminate the duplicate rows. id can be any one of them.
Can any one suggest me with a query by which i can do this.
Thanks in advance
Mohan
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Jun 26, 2000
How do I eliminate others from viewing one of the 2 databases on our production server???Is there any security not to allow all users to including sa and developers not to access one of the 2 databases on our server..
The other of the 2 databases can be accessed....
Please advise
Newbie
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Apr 11, 2008
Hi All,
I need to eliminate Duplicates in my Sql Query, tried to use distinct and that doesn't seem to work, can anybody pls.help.
duplicates are in #ddtempC table, and am writing a query to get a country name from the hash table where hash table has duplicates
hash table contains (THEATER_CODE, COUNTRY_CODE, COUNTRY_NAME).
and trying to write condition on THEATER_CODE and COUNTRY_CODE to get Country_name
and THEATER_CODE AND COUNTRY_CODE HAS DUPLICATES. whenever i do a sub query i get the below error.
Msg 512, Level 16, State 1, Line 1
Subquery returned more than 1 value. This is not permitted when the subquery follows =, !=, <, <= , >, >= or when the subquery is used as an expression.
SELECT USER_FIRSTNAME, USER_LASTNAME,
user_countryCode,
USER_COUNTRY = (SELECT DISTINCT RTRIM(LTRIM(COUNTRY_NAME)) FROM #ddtempC WHERE RTRIM(LTRIM(COUNTRY_CODE)) = USER_COUNTRYCODE AND RTRIM(LTRIM(THEATER_CODE)) = USER_THEATERCODE)
FROM [user]
WHERE USER_USERNAME IS NOT NULL AND User_CreationDate BETWEEN '1/2/2007' AND '4/11/2008'
ORDER BY User_TheaterCode;
Thanks in Advance.
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May 13, 2008
Hey There.
I'm in the process of doing a major data clean up and I'm just wondering how I would go about eliminating some redundant data.
The Table Layout
Contracts
CNTRID CONTRACTNUM STARTDATE CUSTOMNUM
=======================================================
0 1234567 091885 A
1 1234567 091885 A
2 1111111 111111 B
3 1234567 081205 A
Equipment
EQUIPID DEVICENAME CNTRID CUSTOMNUM
=======================================================
0 DEVICE1 0 A
1 DEVICE2 2 B
2 DEVICE3 1 A
3 DEVICE4 3 A
You will notice that each customer may have multiple devices. Each device may be tied to a contract, and each contract may have one or more devices tied to it.
In the example above, you will notice in the contracts table the contracts with the IDs 0 and 1.
Fig 1.
CNTRID CONTRACTNUM STARTDATE CUSTOMNUM
=======================================================
0 1234567 091885 A
1 1234567 091885 A
These contracts have the exact same information.
Furthermore, if you look down the table you will notice the contract with the ID 3.
Fig 2.
CNTRID CONTRACTNUM STARTDATE CUSTOMNUM
=======================================================
3 1234567 081205 A
This contract shares the same contract and customer number, but has a different start date.
Now lets take a look devices in the equipment table that refer to these records.
EQUIPID DEVICENAME CNTRID CUSTOMNUM
=======================================================
0 DEVICE1 0 A
2 DEVICE3 1 A
3 DEVICE4 3 A
You will notice that DEVICE1 and DEVICE 3 refer to the contract records that contain identical data. (As shown in 'Fig 1')
My question is as follows:
How do I eliminate the any duplicate records from the contracts table, and update the records in the equipment table with id of the left over contract.
Results Should be as follows:
Contracts
CNTRID CONTRACTNUM STARTDATE CUSTOMNUM
=======================================================
0 1234567 091885 A
2 1111111 111111 B
3 1234567 081205 A
Equipment
EQUIPID DEVICENAME CNTRID CUSTOMNUM
=======================================================
0 DEVICE1 0 A
1 DEVICE2 2 B
2 DEVICE3 0 A
3 DEVICE4 3 A
Any help you may provide would be greatly appreciated!
Thanks
--mike
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Jul 29, 2013
I have a SQL statement with two left outer joins which connects 3 tables. Vendors, Tracking & Activity. For whatever reason, even though each is a one-to-many relationship, I am able to join 2 tables (from Vendors to Tracking) without an issue. when I then join Activity, I get a Cartesian product.I suspected that 'DISTINCT'.
SELECT DISTINCT CASE
WHEN `vendor`.`companyname` IS NULL then 'No Company Assigned'
ELSE `vendor`.`companyname`
END AS companyNameSQL, `tracking`.`pkgTracking`, CASE
[code]....
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Sep 29, 2014
Need to eliminate certain records from my query. The below is a simple query to illustrate my problem
My Query
Select RequestNo,Event_type from Event_log where Event_type in (10,20)
Data
RequestNo Event_type
123456 10
123457 10
123457 20
123458 10
123459 10
123459 20
This above query returns all requests that meets atleast one criteria. How do i edit my query such that i get requests that meet both criteria and the result set looks like below
Data
RequestNo Event_type
123457 10
123457 20
123459 10
123459 20
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Jul 20, 2005
edit: this came out longer than I thought, any comments about anythinghere is greatly appreciated. thank you for readingMy system stores millions of records, each with fields like firstname,lastname, email address, city, state, zip, along with any number of userdefined fields. The application allows users to define message templateswith variables. They can then select a template, and for each variablein the template, type in a value or select a field.The system allows you to query for messages you've sent by specifyingcriteria for the variables (not the fields).This requirement has made it difficult to normalize my datamodel at allfor speed. What I have is this:[fieldindex]id int PKname nvarchartype datatype[recordindex]id int PK....[recordvalues]recordid int PKfieldid int PKvalue nvarcharwhenever messages are sent, I store which fields were mapped to whatvariables for that deployment. So the query with a variable criterialooks like this:select coalesce(vm.value, rv.value)from sentmessages sminner join variablemapping vm on vm.deploymentid=sm.deploymentidleft outer join recordvalues rv onrv.recordid=sm.recordid and rv.fieldid=vm.fieldidwhere coalesce(vm.value, rv.value) ....this model works pretty well for searching messages with variablecriteria and looking up variable values for a particular message. thebig problem I have is that the recordvalues table is HUGE, 1 millionrecords with 50 fields each = 50 million recordvalues rows. The value,two int columns plus the two indexes I have on the table make it into abeast. Importing data takes forever. Querying the records (with a fieldcriteria) also takes longer than it should.makes sense, the performance was largely IO bound.I decided to try and cut into that IO. looking at a recordvalues tablewith over 100 million rows in it, there were only about 3 million uniquevalues. so I split the recordvalues table into two tables:[recordvalues]recordid int PKfieldid int PKvalueid int[valueindex]id int PKvalue nvarchar (unique)now, valueindex holds 3 million unique values and recordvaluesreferences them by id. to my suprise this shaved only 500mb off a 4gbdatabase!importing didn't get any faster either, although it's no longer IO boundit appears the cpu as the new bottleneck outweighed the IO bottleneck.this is probably because I haven't optimized the queries for the newtables (was hoping it wouldn't be so hard w/o the IO problem).is there a better way to accomplish what I'm trying to do? (eliminatethe redundant data).. does SQL have built-in constructs to do stuff likethis? It seems like maybe I'm trying to duplicate functionality at ahigh level that may already exist at a lower level.IO is becoming a serious bottleneck.the million record 50 field csv file is only 500mb. I would've thoughtthat after eliminating all the redundant first name, city, last name,etc it would be less data and not 8x more!-GordonPosted Via Usenet.com Premium Usenet Newsgroup Services----------------------------------------------------------** SPEED ** RETENTION ** COMPLETION ** ANONYMITY **----------------------------------------------------------http://www.usenet.com
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Apr 10, 2014
WITH cte_OrderProjectType AS
(
select Orderid, min(TypeID) , min(CTType) , MIN(Area)
from tableA A inner join
tableB B ON A.PID = B.PID left join
tableC C ON C.TypeID = B.TypeID LEFT JOIN
tableD D ON D.AreaID = B.ID
group by A.orderid
)
This query uses min to eliminate duplicates. It takes 1.30 seconds to complete..
Is there any way I can improve the query performance ?
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Oct 21, 2014
Being one step removed from innumerate, I was wondering whether there was a more elegant way to avoid divide by zero error instead of trudging through a bunch of isnulls.
My intuition tells me that since multiplication looks like repeated addition, that maybe division is repeated subtraction?
If that's true is there a way to finesse divide by zero errors by somehow reframing the statement as multiplication instead of division?
The sql statement that is eating my kishkas is
cast(1.0*(
(ISNULL(a.DNT,0)+ISNULL(a.rex,0)+ISNULL(a.med,0))-(ISNULL(b.dnt,0)+ISNULL(b.rex,0)+ISNULL(b.med,0))/
ISNULL(a.DNT,0)+ISNULL(a.rex,0)+ISNULL(a.med,0)) as decimal(10,4)) TotalLossRatio
Is there a way to nucleate the error by restating the division? My assertion underlying this statement is that the a alias represents a premium paid, so between medical, pharmacy and dental, there MUST BE at least one premium paid, otherwise you wouldn't be here. the b alias is losses, so likewise, between medical, pharmacy and dental, there MUST BE at least one loss (actually, it just occurred to me that maybe there are no losses, but that would be inconceivable, but ill check again)) so that's when it struck me that maybe there's a different way to ask the question that obviates the need to do it by division.
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May 13, 2008
I am querying several tables and piping the output to an Excel spreadsheet.
Several (not all) columns contain repeating data that I'd prefer not to include on the output. I only want the first row in the set to have that data. Is there a way in the query to do this under SQL 2005?
As an example, my query results are as follows (soory if it does not show correctly):
OWNERBARN ROUTE DESCVEHDIST CASE
BARBAR TRACKING #70328VEH 32832869.941393
BARBAR TRACKING #70328VEH 32832869.941393
BARBAR TRACKING #70328VEH 32832869.941393
DAXDAX TRACKING #9398VEH 39839834.942471
DAXDAX TRACKING #9398VEH 39839834.942471
DAXDAX TRACKING #9398VEH 39839834.942471
TAXTAX TRACKING #2407 40754.391002
TAXTAX TRACKING #2407 40754.391002
TAXTAX TRACKING #2407 40754.391002
I only want the output to be:
OWNERBARN ROUTE DESCVEHDIST CASE
BARBAR TRACKING #70328VEH 32832869.941393
DAXDAX TRACKING #9398VEH 39839834.942471
TAXTAX TRACKING #2407 40754.391002
Thanks,
Walt
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Feb 11, 2007
I am new to sql server and I am having deficulties writing sql script to perform the following:
1) Merging data from two tables A and B
2) Eliminate duplicate present in table B (Conditions to satisfy for dublicate:If similar address is found in both tables AND class type in Table A =1
3) merge data related to dup(eliminated records) to new table.
Not sure if we can eliminate records first before merging two tables. Tables are as follow:
Table A
Fields: ID, NAME, Address, city, zip, Class type
Value:123, John, 123 Main, NY, 71690,1
Value:124, Tom, 100 State, LA, 91070,0
Table B
Field: ID, NAME, Address, city, zip, Class Type
Value:200, Tim, 123 Main, NY, 71690,0 (duplicate; satisfied both conditions and left out in final table)
Value:124, Jack, 100 State, LA, 91070,0 (same condition but second condition is not met)
Value:320,Bob, 344 coast hwy, slc, 807760,0
Final Table:
Field: ID, NAME, Address, city, zip, Class Type
Value:123, John, 123 Main, NY, 71690,1 (should also show t
Value:124, Tom, 100 State, LA, 91070,0
Value:124, Jack, 100 State, LA, 91070,0
Value:320,Bob, 344 coast hwy, slc, 807760,0
Table d:(relate to table A:showing all products that are related to table A)
table_A.ID, Products
123, Paper 1
123, paper 2
Table e:(relate to table B: showing all products that are related to table B)
table_B.ID, Products
200, Paper 3
Final Table:
ID, Product
123, Paper 1
123, Paper 2
123, Paper 3 (changing table b id to table a)
Would appreciate any help writing script to perform such transformation. Thanks
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Jul 13, 2007
Hello,
I'm trying to eliminate the duplicate 'URL' rows in the query:
SELECT
ni.[Id],
ni.[Abstract],
ni.[MostPopular],
ni.[URL]
FROM dbo.[NewsCategory] nc WITH (READUNCOMMITTED)
INNER JOIN dbo.[NewsItem] ni WITH (READUNCOMMITTED)
ON nc.[Id] = ni.NewsCategoryId
WHERE
--nc.[ProviderId] = @ProviderId
--AND
ni.[URL] in (
select DISTINCT URL
from dbo.NewsItem
where mostpopular = 1
-- OR mostemailed = 1
)
ORDER BY ni.[DateStamp] DESC
If you look at this line in the query :
select DISTINCT URL
from dbo.NewsItem
where mostpopular = 1
IF i run this query alone it will return 8 unique rows. I expect that the SELECT IN statemnet would help return a distinct set but it doesn't. This entire query returns like 20 rows with duplicate rows.
The reason why I can't do a distinct in the first set of columns is because the column ni.[Abstract] is TEXT and it says that data type is NOT COMPARABLE.
Thanks so much.
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Jul 20, 2007
Hi i have a table value which contains
value
-----
a
a
a
b
b
b
c
c
c
Now i need to have the results as
a 1
b 1
c 1
I tried using distinct.But OLEDB returns error that invalid syntax.It doesn't support distinct keyword.Actually i read these table from a file thru OLEDB.Not from a database.Any idea ? Thanks in Advance
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Jul 20, 2005
Am I going about this the right way? I want to find pairs of entitiesin a table that have some relationship (such as a field being thesame), so Iselect t1.id, t2.id from sametable t1 join sametable t2 ont1.id<>t2.idwhere t1.fieldx=t2.fieldx ...The trouble is, this returns each pair twice, e.g.B CC BM NN MIs there a way to do this kind of thing and only get each pair once?Kerry
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Jun 19, 2015
I have an UPDATE statement that joins two table by SendId. One table, I'll call it T1, has a clustered index on SendId ASC. The other table I will call T2 also has a clustered index on SendID ASC. All the columns from T2 are used to update T1. The execution plan shows a Clustered index scan on T2 and a Clustered Index Seek on T1 going into a Nested Loops inner join. Immediately following is a Distinct Sort that is done on SendId ASC. Why the Distinct SORT if the tables are already ordered by SendID?
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Mar 10, 2014
I'm using SQL 2012 express.. and just recently learned how to code.
I wrote a query and keep receiving this error...
Error converting data type varchar to float.
here's the query code
SELECT SUM(cast(lc as float))
FROM [dbo].[LaborCosts]
WHERE ppty = 'ga'
AND PL = 'allctd ktchn expns'
AND ACCT like 'payroll%'
I am trying to sum up the values in column LC, and realized I have unnecessary quotations marks. How can I eliminate the quotations from the column, and only query the numerical values?
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Jul 27, 2015
We are trying to do some utilization calculations that need to factor in a given number of holiday hours per month.
I have a date dimension table (dimdate). Has a row for every day of every year (2006-2015)
I have a work entry fact table (timedetail). Has a row for every work entry. Each row has a worked date, and this column has a relationship to dimdate.
Our holidays fluctuate, and we offer floating holidays that our staff get to pick. So we cannot hard code which individual dates in dimdate as holidays. So what we have done is added a column to our dimdate table called HolidayHoursPerMonth.
This column will list the number of holiday hours available in the given month that the individual date happens to fall within, thus there are a lot of duplicates. Below is a brief example of dimdate. In the example below, there are 0 holiday hours for the month of June, and their are 8 holiday hours for the month of July.
DateKey MonthNumber HolidayHoursPerMonth
6/29/2015 6 0
6/30/2015 6 0
7/1/2015 7 8
7/2/2015 7 8
I have a pivot table create based of the fact table. I then have various date slicers from the dimension table (i.e. year, month). If I simply drag this column into the pivot table and summarize by MAX it works when you are sliced on a single month, but breaks if anything but a single month is sliced on.
I am trying to create a measure that calculates the amount of holiday hours based on the what's sliced, but only using a single value for each month. For example July should just be 8, not 8 x #of days in the month.
Listed below is how many hours per month. So if you were to slice on an entire year, the measure should equal 64. If you sliced on Jan, Feb and March, the measure should equal 12. If you were to slice nothing, thus including all 15 years in our dimdate table, the measure should equal 640 (10 years x 64 hours per year).
MonthNumberOfYear HolidayHoursPerMonth
1 8
2 4
3 0
4 0
5 8
6 0
7 8
8 0
9 8
10 4
11 16
12 8
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Feb 4, 2007
How can I set a one-to-one relationship using the Management Studio Express and SQL Server 2005 Express
tblClient, CleintID (PK)
tblProcess, ClientID (FK)
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Feb 22, 2007
Hello
I have need to write a query that I can pass in a bunch of filter criteria, and return 1 result....it's just ALL of the criteria must be matched and a row returned:
example:
Transaction table: id, reference
attribute table: attributeid, attribute
transactionAttribute: attributeid, transactionid
Example dat
Attribute table contains: 1 Red, 2 Blue, 3 Green
Transaction table contains: 1 one, 2 two, 3 three
transactionAttribute contains: (1,1), (1,2), (1,3), (2,3), (3,1)
If I pass in Red, Blue, Green - I need to be returned "one" only
If I pass in Red - I need to be returned "three" only
If I pass in Red, Green - nothing should be returned as it doesn't EXACTLY match the filter criteria
If anyone's able to help that would be wonderful!
Thanks, Paul
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Aug 3, 2007
How to create a relation between gf_game and gf_gamegenre here? gf_gamegenre is responsible for the relation between a game and it's genre(s). The relationship between gf_genre and gf_gamegenre worked. (http://img361.imageshack.us/my.php?image=relationzl9.jpg)
When I try to set a relationshop between gamegenre and game I'm getting this error:
'gf_game' table saved successfully'gf_gamegenre' table- Unable to create relationship 'FK_gf_gamegenre_gf_game'. The ALTER TABLE statement conflicted with the FOREIGN KEY constraint "FK_gf_gamegenre_gf_game". The conflict occurred in database "gamefactor", table "dbo.gf_game", column 'gameID'.
Thanks for any help!
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Aug 12, 2002
Can anyone provided insight on how to create a one-to-one relationship between
SQL tables? Every time I try to link two tables that should be one-to-one, the link says one-to-many.
How can I specify one-to-one when SQL Server automatically thinks it is a one-to-many?
Thanks,
Kellie
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May 22, 2006
hi all,
how to implement the many to many relation ship....
i get stucked it.......
plz help
thanx
sajjad
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Jul 18, 2006
Hey,
I know I'm asking a stupid question but I need to get a clear response please:
why using One-to-One relationship instead of meging the 2 tables in only one?
thanks.
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