Can TSQL query create new output column ?

How can i write a query to split a database column and shows 2 new columns. In my database column

I have 2 mixing items and need to split out to 2 columns. Normally I have to write a query and change parameter

and run another query.

For example a database column with average number and range number.

Thanks

Daniel

Can you post some DDL, sample data and expected results?

AMB

|||

Hai,

Can you try the below query, and let me know that, it relates to your requirement or not:

DECLARE @.Columns varchar(1000)

SET @.Columns = ''

-- Create a temporary table.

CREATE TABLE #TempTable(Items varchar(50))

INSERT INTO #TempTable(Items) VALUES('A')

INSERT INTO #TempTable(Items) VALUES('A')

INSERT INTO #TempTable(Items) VALUES('A')

INSERT INTO #TempTable(Items) VALUES('B')

INSERT INTO #TempTable(Items) VALUES('B')

INSERT INTO #TempTable(Items) VALUES('B')

INSERT INTO #TempTable(Items) VALUES('C')

INSERT INTO #TempTable(Items) VALUES('C')

INSERT INTO #TempTable(Items) VALUES('D')

INSERT INTO #TempTable(Items) VALUES('D')

-- Before

SELECT * FROM #TempTable

-- Make a column list

SELECT

@.Columns = @.Columns + '[' + Items + '], '

FROM #TempTable

GROUP BY Items

-- Check the column values exits or not.

IF ( @.Columns IS NOT NULL ) AND ( @.Columns <> '' )

BEGIN

DECLARE @.Query nvarchar(1000)

SELECT @.Columns = SUBSTRING(@.Columns,1, LEN(@.Columns)-1)

SELECT @.Query = '

SELECT

*

FROM

(

SELECT

Items

FROM #TempTable

) AS Dummy

PIVOT

(

MAX(Items)

FOR Items IN (' + @.Columns + ')

)AS PvtTable'

EXEC(@.Query)

END

-- Drop the temporary table.

DROP TABLE #TempTable

Please clarify If I did any wrong.

Regards,

Kiran.Y

|||

Perhaps something like:

SET NOCOUNT ON

DECLARE @.MyTable table
( RowID int IDENTITY,
MyGroup int,
MyValue decimal(10,2)
)

INSERT INTO @.MyTable VALUES ( 1, 25 )
INSERT INTO @.MyTable VALUES ( 2, 5 )
INSERT INTO @.MyTable VALUES ( 1, 10 )
INSERT INTO @.MyTable VALUES ( 1, 15 )
INSERT INTO @.MyTable VALUES ( 1, 4 )
INSERT INTO @.MyTable VALUES ( 2, 6 )
INSERT INTO @.MyTable VALUES ( 2, 11 )
INSERT INTO @.MyTable VALUES ( 2, 0 )
INSERT INTO @.MyTable VALUES ( 1, 12 )

SELECT
Average = cast( avg( MyValue ) AS decimal(10,2)),
Range = ( cast( min( MyValue ) AS varchar(10)) + '-' +
cast( max( MyValue ) AS varchar(10)))
FROM @.MyTable
GROUP BY MyGroup

Average Range
13.20 4.00-25.00
5.50 0.00-11.00

|||

Hi Kiran

Thanks for answering my email. To clarify this below are my tables and columns and my query

Table: Item Stat_label Stat_value

column: Pack ID Stat_label_ID Stat_value_ID

Pack_Num Label ( has 2 rows Value

Ave and Range)

My query to list Pack_Num, Ave and it's value

SELECT Item.Pack_Num, Stat_label.Label, Stat_value.Value

FROM Item, Stat_label, Stat_value

WHERE Item.packID=Stat_label.Stat_label_ID AND

Stat_label.Stat_lavel_ID=Stat_value.Stat_value_ID

AND Stat_label.Label= Ave

My question: I want a query to list Pack_Num, Ave, Range and value

How can I do it?

That's mean this query need to split the Stat_label and list another

column name"Range".

Thanks
Daniel

|||

If you are using SQL 2005, look into the PIVOT function.

If you are using SQL 2000, explore using CASE.

Maybe these articles will help:

Pivot Tables -A simple way to perform crosstab operations
http://searchsqlserver.techtarget.com/tip/0,289483,sid87_gci1131829,00.html

Pivot Tables - How to rotate a table in SQL Server
http://support.microsoft.com/default.aspx?scid=kb;en-us;175574

Pivot Tables -Dynamic Cross-Tabs
http://www.sqlteam.com/item.asp?ItemID=2955

Pivot Tables - Crosstab Pivot-table Workbench
http://www.simple-talk.com/sql/t-sql-programming/crosstab-pivot-table-workbench/

|||

Thanks all

I can not use "insert" because my account for this is read only and I avoid to list everything in a column and and use Excel pivot to summary.

Daniel

|||

Daniel,

If you would carefully examine the code provided, you will see that the INSERT statements are only building a sample table so that we could demonstrate a query suggestion.

You didn't bother to provide the table DDL, or sample data, so we have to waste our time creating sample data for you. and apparently, you can't read and understand example code.

|||

This may be closer to what you are hoping to find:

SELECT

i.Pack_Num,

sl.Stat_Label,
Average = cast( avg( sv.Stat_Value ) AS decimal(10,2)),
Range = ( cast( min( sv.Stat_Value ) AS varchar(10)) + '-' +
cast( max( sv.Stat_Value ) AS varchar(10)))
FROM Item i

JOIN Stat_Label sl

ON i.Pack_ID = sl.Stat_Label_ID

JOIN Stat_Value sv

ON sl.Stat_Label_ID = sv.Stat_Value_ID

WHERE sl.Label = 'Ave'
GROUP BY

i.Pack_Num,

sl.Stat_Label

|||

Thanks Anrnie but It is not working

Error at Average= cast......

Error at Range= (cast......

My Average and Range are decimal, no need cast

Do I have to declare a temp table?

Daniel

|||

Actually, it appears that the Stat_Value is most most likely a varchar().

Before we can help you any further, please post the table DDL and some sample data in the form of INSERT statements. Please refer to this link for help in preparing your material.

|||

Can SQL query create a new column or not?. DO NOT want to make a temp table.

Thanks

Daniel

|||

Can TSQL create a new column at the output?

If not I need 2 select statement but how to joint them? Can not use EXCEPT in TSQL? Tried to use UNION but

the results in one column.

It's complicated with creating a temp table since I do not know how to insert to temp table from database.

Thanks

Daniel

|||Please supply the requested information. (See my previous post.)

Can this be done using TSQL ?!

Hello
im writing an inventory application for a customer that needs to calculate
item cost by Moving Average method which requires calculating the cost after
each operation, i have a good experience with TSQL but so far i failed to
write the statement that can do this WITHOUT writing cursors
im trying to avoid calculating cost after each transaction to the inventory
. and by writing a stored procedure , get a list showing transactions and
item avg in a period
here is a description of moving avg method , also available here for those
who cant read html
http://www.fms.indiana.edu/auxiliary/inventory.asp
Moving Average--Perpetual
Continuous or moving average assigns a unit value to cost of goods available
for sale. In this scenario, the average cost determines cost of goods sold
at the time of each sale. This method requires a calculation of average unit
cost after each purchase as illustrated below.
# of Units Cost per Unit Total Cost Moving Avg. Cost
Beginning inventory, 7/1 200
$5,000
$25.00
Purchase, 8/10 100
$26.00
2,600
Inv. Balance 300
7,600
25.33
Sale, 9/15 (100)
25.33
(2,533)
Inv. Balance 200
5,067
Purchase, 12/7 600
27.00
16,200
Inv. Balance 800
21,267
26.58
Sale, 12/18 (300)
26.58
(7,975)
Inv. Balance 500
13,292
Sale, 2/22 (250)
26.58
(6,645
Inv. Balance 250
6,647
Purchase, 3/20 300
28.00
8,400
Inv. Balance 550
15,047
27.36
Sale, 5/15 (150)
27.36
(4,104)
Inv. Balance 400
27.36
10,943
Ending Inventory 400
10,943
Cost of Goods Sold 100
2,533
300
7,975
250
6,645
150
4,104
800
$21,257
Regards
Bassamcan you post DDL and some data..and also the example..pasted correctly..
Av.
http://dotnetjunkies.com/WebLog/avnrao
http://www28.brinkster.com/avdotnet
"Bassam" <egbas@.yahoo.com> wrote in message
news:ORrEOZODFHA.3596@.TK2MSFTNGP12.phx.gbl...
> Hello
> im writing an inventory application for a customer that needs to calculate
> item cost by Moving Average method which requires calculating the cost
after
> each operation, i have a good experience with TSQL but so far i failed to
> write the statement that can do this WITHOUT writing cursors
> im trying to avoid calculating cost after each transaction to the
inventory
> . and by writing a stored procedure , get a list showing transactions and
> item avg in a period
> here is a description of moving avg method , also available here for those
> who cant read html
> http://www.fms.indiana.edu/auxiliary/inventory.asp
> Moving Average--Perpetual
> Continuous or moving average assigns a unit value to cost of goods
available
> for sale. In this scenario, the average cost determines cost of goods sold
> at the time of each sale. This method requires a calculation of average
unit
> cost after each purchase as illustrated below.
> # of Units Cost per Unit Total Cost Moving Avg. Cost
> Beginning inventory, 7/1 200
> $5,000
> $25.00
> Purchase, 8/10 100
> $26.00
> 2,600
>
> Inv. Balance 300
> 7,600
> 25.33
> Sale, 9/15 (100)
> 25.33
> (2,533)
>
> Inv. Balance 200
> 5,067
>
> Purchase, 12/7 600
> 27.00
> 16,200
>
> Inv. Balance 800
> 21,267
> 26.58
> Sale, 12/18 (300)
> 26.58
> (7,975)
>
> Inv. Balance 500
> 13,292
>
> Sale, 2/22 (250)
> 26.58
> (6,645
>
> Inv. Balance 250
> 6,647
>
> Purchase, 3/20 300
> 28.00
> 8,400
>
> Inv. Balance 550
> 15,047
> 27.36
> Sale, 5/15 (150)
> 27.36
> (4,104)
>
> Inv. Balance 400
> 27.36
> 10,943
>
> Ending Inventory 400
> 10,943
>
> Cost of Goods Sold 100
> 2,533
>
> 300
> 7,975
>
> 250
> 6,645
>
> 150
> 4,104
>
> 800
> $21,257
>
>
> Regards
> Bassam
>|||Please post DDL and some INSERT statements of your sample data:
http://www.aspfaq.com/etiquette.asp?id=5006
--
David Portas
SQL Server MVP
--|||On Mon, 7 Feb 2005 09:27:19 +0200, Bassam wrote:

>im writing an inventory application for a customer that needs to calculate
>item cost by Moving Average method which requires calculating the cost afte
r
>each operation, i have a good experience with TSQL but so far i failed to
>write the statement that can do this WITHOUT writing cursors
Hi Bassam,
I think you can get the moving average by a simple self-join with group
by. Check the following example:
-- First, create a table to hold all transactions
-- Opening balance is considered a transaction in this simplified example
CREATE TABLE Operations
(OpDate smalldatetime not null primary key,
Amount int not null, -- >0 purchase <0 sale
UnitPrice money not null)
go
-- Insert all data (same as on web page you mentioned)
INSERT Operations (OpDate, Amount, UnitPrice)
SELECT '20040701', 200, 25
UNION ALL
SELECT '20040810', 100, 26
UNION ALL
SELECT '20040915', -100, 25.33
UNION ALL
SELECT '20041207', 600, 27
UNION ALL
SELECT '20041218', -300, 26.58
UNION ALL
SELECT '20050222', -250, 26.58
UNION ALL
SELECT '20050320', 300, 28
UNION ALL
SELECT '20050515', -150, 27.36
go
-- Here's the statement that will calculate amount, value and moving
-- average after each of the transaction.
SELECT a.OpDate AS InvDate,
SUM(b.Amount) AS Amount,
SUM(b.Amount * b.UnitPrice) AS Value,
SUM(b.Amount * b.UnitPrice) / SUM(b.Amount) AS MovingAvg
FROM Operations AS a
INNER JOIN Operations AS b
ON b.OpDate <= a.OpDate
GROUP BY a.OpDate
ORDER BY a.OpDate
go
-- Done. Now clean up the mess.
DROP TABLE Operations
go
Best, Hugo
--
(Remove _NO_ and _SPAM_ to get my e-mail address)|||Hello Hugo,
Thank you for your input but result of your statement will calculate
"Weighted Average" not "Moving Average"
difference is shown in examples in this link
http://www.fms.indiana.edu/auxiliary/inventory.asp
if you open this page and search for weighted average you fill find the
example which works with your statement but the just below example which is
for moving average won't work
i will post DDL and some data here to clear the case
Regards
Bassam
"Hugo Kornelis" <hugo@.pe_NO_rFact.in_SPAM_fo> wrote in message
news:hhme01diqfdiohvb2rj3t896k5deoc47e9@.
4ax.com...
> On Mon, 7 Feb 2005 09:27:19 +0200, Bassam wrote:
>
calculate
after
> Hi Bassam,
> I think you can get the moving average by a simple self-join with group
> by. Check the following example:
> -- First, create a table to hold all transactions
> -- Opening balance is considered a transaction in this simplified example
> CREATE TABLE Operations
> (OpDate smalldatetime not null primary key,
> Amount int not null, -- >0 purchase <0 sale
> UnitPrice money not null)
> go
> -- Insert all data (same as on web page you mentioned)
> INSERT Operations (OpDate, Amount, UnitPrice)
> SELECT '20040701', 200, 25
> UNION ALL
> SELECT '20040810', 100, 26
> UNION ALL
> SELECT '20040915', -100, 25.33
> UNION ALL
> SELECT '20041207', 600, 27
> UNION ALL
> SELECT '20041218', -300, 26.58
> UNION ALL
> SELECT '20050222', -250, 26.58
> UNION ALL
> SELECT '20050320', 300, 28
> UNION ALL
> SELECT '20050515', -150, 27.36
> go
> -- Here's the statement that will calculate amount, value and moving
> -- average after each of the transaction.
> SELECT a.OpDate AS InvDate,
> SUM(b.Amount) AS Amount,
> SUM(b.Amount * b.UnitPrice) AS Value,
> SUM(b.Amount * b.UnitPrice) / SUM(b.Amount) AS MovingAvg
> FROM Operations AS a
> INNER JOIN Operations AS b
> ON b.OpDate <= a.OpDate
> GROUP BY a.OpDate
> ORDER BY a.OpDate
> go
> -- Done. Now clean up the mess.
> DROP TABLE Operations
> go
> Best, Hugo
> --
> (Remove _NO_ and _SPAM_ to get my e-mail address)|||On Mon, 7 Feb 2005 14:32:20 +0200, Bassam wrote:

>Hello Hugo,
>Thank you for your input but result of your statement will calculate
>"Weighted Average" not "Moving Average"
>difference is shown in examples in this link
>http://www.fms.indiana.edu/auxiliary/inventory.asp
>if you open this page and search for weighted average you fill find the
>example which works with your statement but the just below example which is
>for moving average won't work
Hi Bassam,
I did check that page, and the results of my query were equal to the
moving average quoted on that page (the table directly after the heading
"Moving Average--Perpetual").

>i will post DDL and some data here to clear the case
Excellent idea!
Best, Hugo
--
(Remove _NO_ and _SPAM_ to get my e-mail address)|||Hello Hugo,
I tested your statement, great , it works to a great detail !! , i found a
problem in the moving avg in date 2/22/05 , it should be exactly as the one
done on 12/18/04 (sales also) to be 26.5860 , but the one on 2/22/05 is
26.5920 (it is exactly 26.5860 in table) so i will make my tests what if i
put 20 sales transactions and see the result
but your statement gave max accurate to date to table.do you know a way to
overcome this small shift ?
thank you and welcome to any comments
Bassam|||On Mon, 7 Feb 2005 15:24:41 +0200, Bassam wrote:

>Hello Hugo,
>I tested your statement, great , it works to a great detail !! , i found a
>problem in the moving avg in date 2/22/05 , it should be exactly as the one
>done on 12/18/04 (sales also) to be 26.5860 , but the one on 2/22/05 is
>26.5920 (it is exactly 26.5860 in table) so i will make my tests what if i
>put 20 sales transactions and see the result
Hi Bassam,
I noted the difference as well. This is caused by rounding errors.
Consider the first few rows in the sample data. The beginning inventory
shows 200 units at a total cost of $ 5,000 - exactle $ 25.00 on average.
After the first purchase, there are 300 units on stock and the total cost
is equal to $ 7,600. The average price is $ 25.333333333333333 (etc), but
it is rounded down to $ 25.33. This would mean that if the following sale
would not be for 100 units (as listed in the example), but for 300 units,
the total sale price would be $ 7,599 and the remaining stock would be 0
units, for a total price of $ 1.
The example on the web page graciously avoids this anomaly by only
including a new price after each purchase. It doesn't list the moving avg
cost after a sale, so I could not verify if the values given by my query
are correct or not.
If you need the moving average cost to reflect the situation after the
last purchase instead of after the last sale, try this (slightly more
complicated) query:
SELECT a.OpDate AS InvDate,
SUM(b.Amount) AS Amount,
SUM(b.Amount * b.UnitPrice) AS Value,
(SELECT SUM(c.Amount * c.UnitPrice) / SUM(c.Amount)
FROM Operations AS c
WHERE c.OpDate <= (SELECT MAX(d.OpDate)
FROM Operations AS d
WHERE d.OpDate <= a.OpDate
AND d.Amount > 0)) AS MovingAvg
FROM Operations AS a
INNER JOIN Operations AS b
ON b.OpDate <= a.OpDate
GROUP BY a.OpDate
ORDER BY a.OpDate
(Note: if you only need the date and the moving average, not the amount
and value of the inventory, you can remove the group by and the join to
"Operations AS b" - IOW, you can simplify to:
SELECT a.OpDate AS InvDate,
(SELECT SUM(c.Amount * c.UnitPrice) / SUM(c.Amount)
FROM Operations AS c
WHERE c.OpDate <= (SELECT MAX(d.OpDate)
FROM Operations AS d
WHERE d.OpDate <= a.OpDate
AND d.Amount > 0)) AS MovingAvg
FROM Operations AS a
ORDER BY a.OpDate
Best, Hugo
--
(Remove _NO_ and _SPAM_ to get my e-mail address)|||Bassam,
Thanks to Hugo for posting the DDL for the table, I will assume it is
correct. Here is a try, but do not compare to the table in the link, there i
s
an error there.
Error in the link:
Sale, 12/18 (300) 26.58 (7,975)
well, -300 * 26.58 should be 7,974.
select
a.OpDate,
sum(b.Amount) as number_of_units,
sum(b.Amount * b.UnitPrice) as total_cost,
(
select
sum(c.Amount * c.UnitPrice) / sum(c.Amount)
from
Operations as c
where
c.OpDate <= (
select
max(d.OpDate)
from
Operations as d
where
sign(d.Amount) >= 0 and d.OpDate <= a.OpDate
)
) as moving_avg_cost
from
Operations as a
inner join
Operations as b
on a.OpDate >= b.OpDate
group by
a.OpDate
order by
a.OpDate
go
AMB
"Bassam" wrote:

> Hello Hugo,
> Thank you for your input but result of your statement will calculate
> "Weighted Average" not "Moving Average"
> difference is shown in examples in this link
> http://www.fms.indiana.edu/auxiliary/inventory.asp
> if you open this page and search for weighted average you fill find the
> example which works with your statement but the just below example which i
s
> for moving average won't work
> i will post DDL and some data here to clear the case
> Regards
> Bassam
>
> "Hugo Kornelis" <hugo@.pe_NO_rFact.in_SPAM_fo> wrote in message
> news:hhme01diqfdiohvb2rj3t896k5deoc47e9@.
4ax.com...
> calculate
> after
>
>|||Hello Hugo,
Thank you, Clear and efficient ! , only last problem , what if a user need
to delete a purchasing happened at beginning of month - or adjust its unit
price value, that means all next averages used in next sales is wrong and
need to be recalculated, is there a way to recalculate unit price for sales
transactions ' i need to adjust that before using your statement again or
result will be wrong
to make situation more complicated is that it might also be more purchasing
down there with sales, i mean suppose user deleted 1 of 5 purchasing done at
beginning of the month , on day 1 , while other purchasing happened on day 5
, 8 , 12 , 14 remains , and there are sales in between. , how then i can
recalculate unit price (which is the moving average) for sales
transactions.in between ?
Thank you
Bassam

Can someone help me in understanding the output of this TSQL script

declare @.startdate datetime

declare @.enddate datetime

declare @.testvalue datetime

set @.startdate = '2005-12-31'

set @.enddate = '2006-12-29'

set @.testvalue ='2006-05-17'

if convert(varchar(20), @.testvalue, 102) between convert(varchar(20), @.startdate, 102) and convert(varchar(20), @.enddate, 102)

print 'yes'

else

print 'no'

-

The above script print yes with format specifier as 102 where as it prints no with format specifier as 102. Why/how does the format specifier affect the output?

I agree that there are better was of achieving what is done in the above script. But I am curious to know the why sql server behaves this way in the above query.

Thanks

Take a look at the output of the following SQL:

declare @.startdate datetime
declare @.enddate datetime
declare @.testvalue datetime
set @.startdate = '2005-12-31'
set @.enddate = '2006-12-29'
set @.testvalue ='2006-05-17'

SELECT Mode = 'No Format', TestVal = convert(varchar(20), @.testvalue),
StartVal = convert(varchar(20), @.startdate),
EndVal = convert(varchar(20), @.enddate)
UNION ALL
SELECT 'Format 102', convert(varchar(20), @.testvalue, 102),
convert(varchar(20), @.startdate, 102),
convert(varchar(20), @.enddate, 102)

This gives the following results:

No Format | May 17 2006 12:00AM | Dec 31 2005 12:00AM |Dec 29 2006 12:00AM
Format 102 | 2006.05.17 | 2005.12.31 | 2006.12.29

As you can see the no format provides date text strings which do not sort alphabetically in date order at all. Format 102 produces a text string which does sort in date order when sorted alphabetically so can be used in the comparison. Of course the simple way to do it is to perform the comparison directly on the date data.

|||

I agree with your explanation for format specifier 102. However, This means that my script in the first thread should work with the format specifier as 101. But it doesnt. Can you explain this behaviour please?

|||

If you are comparing date values, you 'should NOT' be converting to varchar!

It is wasted effort and slows your process down.

|||

That's the reason i mentioned in my first post that we can do this in a better way. I am of the opinion that we have to use datetime instead of varchar(20).

But what i want to know is why does the change in format specifier (in my query) change the output value.

With 101 format specifier the expression evaluates to false where as with 102 it evaluates to true. Need to know/understand this behaviour of SQL server wrt the format specifier change.

|||

For exactly the same reason - again this is a text-based comparison.

Here are the strings you are comparing, ordered alphanumerically ascending:

--102
2005.12.31 - @.startdate
2006.05.17 - @.testvalue
2006.12.29 - @.enddate

--101
05/17/2006 - @.testvalue
12/29/2006 - @.enddate
12/31/2005 - @.startdate

It's clear to see that in the second example, @.testvalue < @.enddate. In fact using format 101 makes your BETWEEN condition impossible to meet.

Chris

|||Thanks Chris!

Can somebody explain this event in Sql Server Profiler?

Sql Server 2005; debugging a web application that accesses multiple databases.

I'm debugging some tsql in my web application using Profiler. Every once in awhile an Audit Login event will show up. This event contains the following text data:

-- network protocol: TCP/IP
set quoted_identifier on
set arithabort off
set numeric_roundabort off
set ansi_warnings on
set ansi_padding on
set ansi_nulls on
set concat_null_yields_null on
set cursor_close_on_commit off
set implicit_transactions off
set language us_english
set dateformat mdy
set datefirst 7
set transaction isolation level read committed

When this event shows up, there is a noticable lag in the time it takes for the query to return. I'm wondering if anybody can tell me

1) What causes this event

2) How often can I expect this to happen. I.e., it happens once per application instance, once per application instance touching a database for the first time, once every X minutes, once every x queries executed, etc.

TIA!

Every time a new connection is made by a client -and is very normal and necessary.