Derived Table Alternative

Feb 7, 2007

I have an application that has two different database backends, one is SQL Server Compact Edition and the other is SQL Server. The reason is because the application may run at home on one of our sales agent's computers or here in the office.

I have a query that uses a derived table and works just fine in SQL Server, however when I run it in the compact edtion (having the exact same table structures) it will not run. My question is...does the Compact Edtion or the Mobile Edition allow derived tables. If not is there a way to work around this? I will happily give an example if it will help.

Thank you,

Adam

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Need Alternative To PATINDEX In Derived Column Transform

Oct 30, 2007

Hello,
I understand that it is not possible to use PATINDEX in a Derived Column transform. I'm trying to eliminate leading zeros from a column where the string is always 14 characters long, but the first non zero character could occur any number of characters from the left of the string. The following achieves what I need:


substring([Account No w/0s], patindex('%[^0]%', [Account No w/0s]), 14) AS ExtractedAcctNo


Does anyone happen to know how I might express this differently in a Derived Column transform? Should I consider a calling a function through an OLE DB Command transform on each row instead? Maybe I should have a SQL Task that runs an UPDATE statement against the column.

Thank you for your help!

cdun2

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Apr 27, 2015

I want to send out an email and the email body contains a table with data. I am using SQL to create the HTML table and to populate values inside the table. Below is the code I have so far

DECLARE
@HTML NVARCHAR(MAX)
;
IF (SELECT
COUNT(*)
from Employee])
!= 0

[Code] ....

But I am having trouble generating alternative colors for each row (tr:nth-of-type(odd) is not working for me)

Below is what the table should look likeĀ ....

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Jan 29, 2008

Hi all,

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Alternatively, I could use an existing xml document which contains table metadata (table name, column names,types etc) to transfer data from these particular columns to another database replica.

Thanks,
Yannis

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Advantage Of Derived Table Over Temp Table

Jan 22, 2008

Hi, I wanna know is there any advantage of perf gain when using Derived Tables over Temp Tables, advice me which one is better to use. Can I create Indexes and Insert/Update records into Derived Tables.


-Senthil

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Mar 10, 2006

I have 3 tables TableA , TableB and TableC

I have to update tableA with the value of TableB by checking A.Field=B.Field
and TABLEB as condition that B.Field should exists in tableC

Update A Set A.Field=B.Field From tableA A
(select B.Field From TableB B where B.Field=A.Field and B.Field in (select C.Field
From tableC C))

How to do it correctly.
Thanks in advance

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Feb 28, 2008

Hi,
I have built a database for a university project, but am having trouble with the SQL syntax for inserting derived data from a calculation into a table.  At present my SQL is;
INSERT INTO MemberPayment (TotalCharge) VALUES ( [Total] )
SELECT ((MileageHistory.MileageUrban * Vehicle.EmissionsPerGramUrban) * 0.05) + ((MileageHistory.MileageCountry * Vehicle.EmissionsPerGramUrban) * 0.05) AS 'Total'
FROM [NeuCar].[dbo].[MileageHistory] JOIN [NeuCar].[dbo].[Vehicle]
ON MileageHistory.Registration = Vehicle.Registration
JOIN [NeuCar].[dbo].[Member] ON Vehicle.UserName = Member.UserName
WHERE Member.UserName = 'wenger1' AND (MileageHistory.[Date] >= CURRENT_TIMESTAMP - 30);
Would anybody be able to point out where I am going wrong? I would very much appreciate any advice,
Kind regards,
Chima

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Derived Table Not Updatable

Oct 6, 2004

I got an error as follows:
Derived table 'A' is not updatable because a column of the derived table is derived or constant.
when I tried to run this query:
update A set MonthsUnbilled =99999888
FROM (select MonthsUnbilled from dbo.vw_MasterView
WHERE (RecordID =8377396)) A
This is a simplified query in order to pinpoint the culprit. I know I don't need to use a derived table if the real query is this simple.

Thanks in advance!

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Updating Using Derived Table Err:

May 12, 2008

Below is my sql, i am getting error msg "Incorrect sytax near 'Votes'."
Can anyone tell me what im doin wrong?

UPDATE #TblExposure
SET E.Unity =
(
SELECT
-- DealId ,DocketId,
CASE Participant2
WHEN nullTHEN 'NA'
ELSE
CASE WHEN Participant2-Vote2 =0 THEN 'Yes'
ELSE 'No'
END
END AS Unanimous1
FROM #tblVoting
) Votes
FROM #tblExposure E INNER JOIN Votes
ONVotes.Dealid = E.Dealid
AND Votes.DocketId =E.DocketId

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Jul 30, 2013

I want to rank the below table by Sum [Pts} Desc AS Position?

,Sum(Games) as Pl
,SUM(Win) as W
,SUM(Draw) as D
,SUM(Loss) as L
,SUM(F) as F
,SUM(A) as A
,SUM(Total) as Tot
,ROUND(AVG(GPG),2) AS GPG

[code].....

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Do I Need A Derived Table For This Situation

Feb 1, 2007

OBJECTIVE:THE QUERY SHOULD GIVE ME THE FIELDS I MENTIONED IN THE FIRST QUERY WITH THE CONDITIONS BELOW.
CONDITION 1: RateReview field should have yesterday's date
CONDITION 2: Email will be send to customer only once so Customer_GUID is UniqueIdentifier
CONDITION 3: Customer shouldnt' have opted to get out from receiving any email so Termination field should be NULL
ONe Customer can have many transwactions
Is there any way i write the code specifying that no email should be sent more than once evereven if customer buys 10 tickets.
Only one email sent so i need to specify that if this email has gone to particulare CUSTOMER_GUID then Ignore that record and
do not send any email. This would be done by some tool known as StrongMail.
SELECT
CAST(a.Transaction_GUID AS varchar(36)) as Transaction_GUID,
CAST(a.Customer_GUID AS varchar(36)) as Customer_GUID,
Film_id as MovieId,
First_nm as FirstName,
Last_nm as LastName,
Email_nm as EmailAddress
FROm
Table1 where RateReview_dm >= dateadd(day, datediff(day, 0, getdate()), -1) -- Greater or same as Yesterday day
and RateReview_dm < dateadd(day, datediff(day, 0, getdate()), 0) -- Less than today's date
and
and Terminate_dm is null
(I don;t know what condition to give that same customer good should not be send email again if send once)
i don't know whether i need to create a derive table or it can work without drive table

Cananyone help me with this query please

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Jul 20, 2005

I've created this:SELECTc.ProjectID,Count(c.ID) as 'Registrants',Count(dt.Hits) as 'Submissions'FROMCME_TBL cJOIN(SELECT ProjectID, Count(*) as Hits FROM CME_TBLWHERE evalDate Is Not NULL OR testDate Is Not NULLGROUP BY ProjectID) dtON c.ProjectID = dt.ProjectIDGROUP BYc.ProjectIDORDER BYc.ProjectIDand I get this:ProjectID Registrants Submissions--------- ----------- -----------adv_104699 99adv_1047185 185adv_110566 66boh_107134 34Instead, I want this:ProjectID Registrants Submissions--------- ----------- -----------adv_104699 14adv_1047185 82adv_110566 17boh_107134 12The "ProjectID" and "Submissions" columns are produced when I run thederived table (dt, above) as a standalone query. By the same token,the "Project ID" and "Registrants" columns are produced when I run the"outer" query, above.Am I on the right track here?TIA,-- Bill

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Jul 20, 2005

Hi all,I have a table in this formatcolname1 colname2 colname3col1data1 col2data1 col3data1col1data2 col2data2 col3data2col1data3 col2data3 col3data3col1data4 col2data4 col3data4I want to display it in this formatcolname1 col1data1 col1data2 col1data3 col1data4colname2 col2data1 col2data2 col2data3 col2data4colname3 col3data1 col3data2 col3data3 col3data4Basically rotate it through 90 degrees clockwise and flip it over :)I'm pretty sure this is done by using a crosstab query and or aderived table or temp table. The problem is I use a crosstab query toget the original data into the first format. I've been strugglingtrying to get the ouptput into the second format for over a day nowand just can't seem to get it to work. Can anyone give me any pointerson the general solution to this?I hope this makes sense. Thanks for the help.

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Jul 31, 2007

I have some questions on derived table. Below is my situation.

Table order, there are 40 columns and it has indexes for productID and addressID
Table product, there are 15 columns and it has index for productID
Table address, there are 20 columns and it has index for addressID

Query A
-------
select C.address, C.area, B.productname, B.category, A.qty, A.price
from order A
join product B
on A.productID = B.productID
join address C
on A.addressID = C.addressID

Query B
-------
select C.address, C.area, B.productname, B.category, A.qty, A.price
from (select qty, price, productID, addressID from order) A
join (select productID, productname, category from product) B
on A.productID = B.productID
join (select addressID, address, area from address) C
on A.addressID = C.addressID

Will I loss the indexing when using derived table?
Why query B performance is much better than query A?

Thanks.

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How To Use A Stored Procedure As A Derived Table

Nov 20, 2001

Hi All,

Can any one give me code sample which uses the recordset returned by the execution of a stored procedure as a derived table.

Thanks,
venkat.

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Jun 11, 2006

Hi,I got another question here:I want to use query like this:SELECT * FROM (sp_lock AS T) WHERE objectID = ...The purpose is that I want to query the result set returned by sp_lockusing derived table, but it doesn't work. Why?Thanks,Baihao--Posted via Mailgate.ORG Server - http://www.Mailgate.ORG

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MAX Of TOP In Derived Table Behaving Strange

Feb 19, 2008



Hi,

I am working for my client on SQL 2005 Enterprise & observed a strange behaviour. Consider a table(EMPTABLE) as below:









PK, INT

VARCHAR


EMPID

EMPNAME


1

A


2

B


3

C


4

D


5

E


6

F


7

G


8

H


9

I


10

J


Now, I wanted the 5th highest EMPID from 2 from the table. Now, we know that the SQL

SELECT TOP 6 EMPID FROM EMPTABLE WHERE EMPID >=2 should (from all other possibilities) return me the desired value as the last row of the output table. I tried to get this in a derived table & get the MAX value i.e.

SELECT MAX(EMPID) FROM
(
SELECT TOP 6 EMPID FROM EMPTABLE WHERE EMPID >=2
) der

But this returns me 10, when I would've thought 7 was the expected answer

I remodified my query as mentioned below to strangely get 7 as the result...
SELECT MAX(EMPID) FROM
(
SELECT TOP 6 EMPID FROM EMPTABLE WHERE EMPID >=2 ORDER BY EMPID ASC
) der


How did the ORDER BY hep it???

Also, if I use
SELECT MAX(EMPID) FROM
(
SELECT TOP 6 EMPID FROM EMPTABLE WHERE EMPID >2
) der


I get the same result without having to specify the ORDER BY in my derived TABLE...

I tried looking for similar threads. But nothing could explain this to me...

If anyone knows what I am not able to understand, please let me know.

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Sep 21, 2005

Relative SQL newbie here......this is probably easy, but....Lets say I have a table (MainTable) that stores a list of input table names,a primary key (PKey), and a field called "Configured" for each one. Each ofthese input tables also contain a field called "Configured", which is set totrue or false in another process based on an OrderNumber. (So an order'sinputs are stored in several input tables, and the MainTable is a summarytable that shows which input tables have been configured for any givenOrderNumber).What I need to do is open each input table, and look for a record containinga specific OrderNumber and where Configured=true. If a record is found, Ineed to update the Configured field for that table in the MainTable, andthen move on to the next sub-table.The way I'm doing it now is with simple SQL and loops. Here is the basiccode (ASP):*****************************************OrderNumber = "562613" ' the current order that is being processed' reset all configured flagssql = "UPDATE MainTable SET Configured = 0"conn.execute sql, , &H00000080' get list of all tablenamessql = "SELECT InputTableName, PKey FROM MainTable WHERE InputTableName <>'---'"set rsTableNames = conn.execute(sql)while not rsTableNames.eof' test each input table for configured flagsql = "SELECT Configured FROM " & rsTableNames("InputTableName")& _" WHERE Configured = 1 AND OrderNumber = '" & OrderNumber &"'"set rs = conn.execute(sql)If Not rs.EOF Then' update the main tablesql = "UPDATE MainTable SET Configured = 1 WHERE PKey='" &rsTableNames("PrimaryKey") & "'"conn.execute sql, , &H00000080end ifset rs = nothingrsTableNames.movenextwend*****************************************There has to be a faster way.. I think.... maybe something that could bewritten as a stored procedure? I use a similar technique in a couple ofother places and it's a bit of a performance hit, especially as the numberof input tables grows.TIA!Calan

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Apr 6, 2007

Dear friends, can anyone please guide me on how to update table with results from derived column tool?

thanks,

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Combine 2 Rows From Derived Table Into 1 Row W/o Repeating Query?

Aug 1, 2007

I'm trying not to use a temp table, but i may have to do so..
I'm using sql2005 for this case.

i have a derived table that makes the following results:



ID Status Name

2 1 "A"

2 2 "B"



I want to get the following:

ID Name1 Name2

2 "A" "B"



but like I said before, I can't repeat the query that gets the first 2 rows, as it's pretty invovled. a temp table is the best route I see right now, but I just wanted to be sure I'm not missing something. If I've aliased it as 'results', is there a way to alias results again as something else? or maybe a trick with CTEs? I will try that! It seems promising.

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Combine 2 Rows From Derived Table Into 1 Row W/o Repeating Query?

Aug 1, 2007



I'm trying not to use a temp table, but i may have to do so..

i have a derived table that makes the following results:

ID Status Name
2 1 "A"
2 2 "B"

I want to get the following:
ID Name1 Name2
2 "A" "B"

but like I said before, I can't repeat the query that gets the first 2 rows, as it's pretty invovled. a temp table is the best route I see right now, but I just wanted to be sure I'm not missing something.

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SQL Server 2012 :: Derived Table To Extract Value Of Account For Comparison

Nov 2, 2014

In my TSQL code i use a derived table to extract the value of account 321 to compare if they are the same that the SUM of my line invoice cost multiply by quantity line : Sum(fi.ecusto*qtt)

This is my script:

SELECT ft.ndoc [Doctype],ft.fno [Docnr] , Sum(fi.ecusto*qtt) [totalcostof my Invoiceline], xctb.conta [accountancy account],
sum(Case when ft.tipodoc = 1 then Xctb.ecre else Xctb.edeb end) as [Value of Cost of invoice in accountancy],
[DIF] = Sum(fi.ecusto*qtt) - Sum(Case when ft.tipodoc = 1 then xctb.ecre else xctb.edeb end)

[Code] ....

My problem is if i have more than on line on my invoice, for example 2 lines, the value of column [Value of Cost of invoice in accountancy] are duplicated, for 3 line invoice the value are multiply by 3.

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Jan 31, 2008

When my colleague makes any change to a query containing a derived table, the word 'WITH' followed by a lot of graphical characters appears after the alias, rendering the query unusable. We have tried this with various existing and new, simple queries, all to no avail. We are editing the queries in Visual Studio 2003, and he does not get this effect when using Visual Studio 2005. I can edit the query in 2003 on my laptop with no ill effects.

Help!

Karen

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Request For Confirmation Of SQL 2005 Optimiser Bug With Derived Table And Convert()

Jul 23, 2007

I have discovered what looks like a bug in the optimiser. I've posted it at https://connect.microsoft.com/SQLServer/feedback/ViewFeedback.aspx?FeedbackID=288243 but I wonder if any of you with SQL 2005 RTM, 2005 SP1 or 2008 CTP could confirm when this was introduced and whether it is still an issue?






Code Snippet

-- Bug report

-- 2007/07/19

-- Alasdair Cunningham-Smith

-- alasdair at acs-solutions dot co dot uk

set nocount on

go

-- example date in in British date format

set dateformat dmy

go



use tempdb

go



create table foo( bar varchar( 30 ) not null )

go



insert into foo( bar ) values ( 'fishy' )

insert into foo( bar ) values ( '19/07/2007' )

go



-- this works fine in all versions - only valid dates are passed to the convert function

select

convert( smalldatetime, bar, 103 ) as bardate

from

foo

where

bar like '__/__/____'

go



-- this works on SQL 2000, but fails on SQL 2005 SP2 (I've not tried other SPs of SQL 2005):

-- Msg 295, Level 16, State 3, Line 2

-- Conversion failed when converting character string to smalldatetime data type.

--

-- I believe the query is rewritten as if the derived table query contained

-- "and convert( smalldatetime, bar, 103 ) < getdate()"

-- which would expose the convert to the invalid data

select

*

from

(

select

convert( smalldatetime, bar, 103 ) as bardate

from

foo

where

bar like '__/__/____'

) as derived

where

bardate < getdate()

go



-- Workaround:

-- Use a case statement to protect the convert operator from the invalid data

select

*

from

(

select

case when bar like '__/__/____' then

convert( smalldatetime, bar, 103 )

else

null

end as bardate

from

foo

where

bar like '__/__/____'

) as derived

where

bardate < getdate()

go



drop table foo

go



The workaround I discovered is simple but ugly. I invite your comments...



alasdair.

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Jul 22, 2015

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Oct 25, 2007

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Ideas?

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Mar 25, 2008


Table structure as follows



Employee

Empno empname salary
commission



I want to have an other employee table named employee_modified

Empno empname salary
commission derived_column1(salary+commission)
derived_column2(derived_column1 + xxxx) and so on derive other
columns based on the earlier derived columns)

Is that possible to do it.. or am I doing something wrong.



something like



Select empno , empname , salary , commission,

(salary + commission) as derived_colum1 ,

(derived_colum1 + xxxxx) as derived_colum2 ,

(derived_colum2 + xxxxx) as derived_colum3

into employee_modified from employee

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Jul 30, 2007

Hi,
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Jul 20, 2005

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Dec 30, 2007

Hi everyone,
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Original:ID = MyDataLayer.Execute("INSERT INTO X(a,b,c) VALUES(A,B,C); SELECT @@IDENTITY")
Proposed solution:
lock(MyDataLayer)
ID = MyDataLayer.Execute("SELECT MAX(id)+1 FROM X")
if(ID==null) ID=1
MyDataLayer.Execute("INSERT INTO X(id,a,b,c) VALUES(ID,A,B,C)")
unlock(MyDataLayer)
(This is of course pseudocode, for SQL Server I'd need SET IDENTITY_INSERT.)

Do you think the preceding solution is equivalent to the original?
Do you know something better?

Equivalent should mean here, not necessarily generating the same ID's,
but maintaining functionality and consistence all over the database.

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Apr 7, 2004

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May 14, 2001

Hi!

I wrote a query in MS-ACCESS using IIF. Is there any way to convert it to SQL Server Query to do the same job as it do in MS-ACCEESS

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Jan 26, 2004

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It has come time to evaluate other products. If there is a magic bullet, I would love to hear about it. In its absence, does anyone have success to share with other products?

Phil

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