Calculated Fields In Queries Using Stored Procedures

Dec 20, 1999

Help!
I have converted my Access Jet database to a SQL Server database. In Access, I had many functions that I created to use in my queries. SQL Server does not allow for functions to be created. So, I had to create procedures in SQL Server to perform what my functions did.

I am trying to use the procedures I created on calculated fields within my SQL statement in my view. It returns an error stating that the procedure is not recognized.

How can I create functions to be used in my query?

Thanks.

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Retrieving Scalar Or Calculated Values From Stored Procedures With C#

Feb 4, 2007

I am trying to build an Sql page hit provider.  I am having trouble getting a count back from the database.  If I use ExecuteScalar it doesn't see any value in the returned R1C1.  If I use ExecuteNonQuery with a @ReturnValue, the return value parameter value is always zero.  Ideally I would like to use a dynamic stored proceudre if there are any suggestions for using them with C#.  My table has rvPathName, userName and a date.  I have the AddWebPageHit method working so I know data connection and sql support code in provider is working.  I think the problem is either in how I am writing the stored procedures or how I am trying to retrieve the data in C#.  Any help with this will be greatly appreciated.

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Sep 19, 2007

Hi,
 I have a quick question about pushing things onto the database to do.  It is supposed to be more efficient, and it is more secure.  The downside as far as I can tell is that one can end up with incredibly expensive and complex database deployment using costly servers and software. 
Is there an approach that minimizes database query time by moving much of the processing to the (less efficient) web server calling the database, and then only using simply queries.  One would then process the data in code, stripping it down to exactly what is needed, rather than doing complex things on the db itself.
An example of this might be that you want to parse a field on a particular char. and return only the first part of the string, up until this char occurs.  This can be done on the db server, but...
I understand that one might return extra information, but it seems there is a large potential payoff in less complexity and expense.
Anyway, if you know of such an approach and the name of it, I would appreciate hearing it,
Thanks

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Jun 12, 2006

Hello, I'm trying to create a Stored Procedure who receives the table name as a parameter, then uses a cursor to obtain every column name and then builds a string like SELECT col1, col2, ... from TABLE

In fact that would be the same as SELECT * FROM table; but I can't do this, because I'll be using this stored procedure to loop through many tables that has different quantity of columns with a DTS, and if a specify the *, then the DTS wouldn't let me do the select with tables with different quantity of fields.

Could you help me please, because my code isn't working:

CREATE PROCEDURE dbo.stp_Test
(
@tablename AS VARCHAR(50)
)

AS

DECLARE @columnname varchar(50)
DECLARE @strsql Nvarchar(500)
DECLARE @query varchar(4000)

SET NOCOUNT ON

DECLARE c1 CURSOR FOR
SELECT column_name FROM information_schema.columns
WHERE table_name = @tablename
OPEN c1
FETCH NEXT FROM c1 INTO @columnname
WHILE @@fetch_status = 0
BEGIN
IF (@strsql is null)
BEGIN
SET @strsql=@columnname
END
ELSE
BEGIN
SET @strsql = @strsql + ',' + @columnname
END

FETCH NEXT FROM c1 INTO @columnname
END
CLOSE c1
DEALLOCATE c1

SELECT @query = 'SELECT ' + @strsql + ' FROM ' + @tablename
EXEC @query

SET NOCOUNT OFF
GO

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Dec 17, 2007



Hi,


We have our DWH built in SQL Server 2005. We are doing reporting against the DWH and most of query logic is complex. For this purpose we have proposed to write SPs to encapsulate the logic and which in turn can be called from the Report Data Tab. But our IT Architect suggest us to have inline queries instead of SPs as that will reduce the overhead of going to the DBAs everytime the logic changes. As I am new to DWH+Reporting, I was really pondering over which way to go. Can anyone suggest a way out on this.
Thanks,
S Suresh

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Aug 18, 2004

Hello,

How can I get the name of the fields along with datatypes of a stored procedures.

Thanks in advance,
Uday.

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Mar 15, 2007

I know its a weird request, but we have created an application with sql server but our client wants a version which can be put onto disk.

We decided to create the stored procedures into queries, would this be the best idea and if so does anyone know if there is a freeware software that can do this or will I have to painstakingly re-create the queries?

Any advice would be greatly appreciated.

Many thanks
Smilla

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Jul 23, 2005

Hi,I'm adapting access queries to sql server and I have difficulties withthe following pattern :query1 : SELECT * FROM Query2 WHERE A=@param1query 2: SELECT * FROM Table2 WHERE B=@param2The queries are nested, and they both use parameters.In MS Acccess the management of nested queries with parameters is soeasy (implicit declaration of parameters, transmission of parametersfrom main query to nested query)that I don't know what the syntax should be for stored procedures.The corresponding stored procedure would be something likeCREATE TABLE #TempTable (...table definition...)INSERT INTO #TempTable ExecProc spQuery2 @Param2SELECT * FROM #TempTable WHERE A=@Param1And spQuery2 would be : SELECT * FROM Table2 WHERE B=@ParamI was wondering if this syntax would work and if I can skip theexplicit declaration of #TempTable definition.Thanks for your suggestions.

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Using Stored Procedures Are You Safe From Sql Injection If Your Not Using Dynamic Queries ?

Mar 12, 2008

Im reviewing my stored procedures for a new application and got to thinking about protecting against sql injection. I think im pretty safe since im using stored procedures and none of them use any 'exec' commands within them, but im not sure.
I was reading this article, and again all the examples that list a stored procedure, have an 'exec' command somewhere that is the culprit. So, in my case lets say I was doing something like this:

Im generally using regularexpression validation controls on the client side of the application and limiting the max length of the input there as well.


Am I safe, or do I need further input checking within the procedure ?




Code Snippet

CREATE PROCEDURE [dbo].[get_Uploads]
@app varchar(50)
--Init variables
SET @error_number = 0

BEGIN TRY
SELECT [Logid],[Filename],[Label],[UploadDate],[App]
FROM UploadLog au
WHERE [App]=@app
END TRY
BEGIN CATCH
SET @error_number = -2
END CATCH

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Thanks.

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Mar 7, 2007

Hello everyone,

I don't know what category would be appropriate for this question but security seems to be close enough.

I have this case scenario: I am running an automated application that extracts data from a web site and stores the data into a table on SQL server 2005. This information is not confidential in the extreme of social insurance #'s, bank account #s, but should not be seen by a typical employee (it has no use for them). After the data has been stored, it retrieves the data from the same table, processes it, and updates the same table. This application runs every hour infinitely.

Should all the insert, update, and select queries be stored under a stored procedure? I am not concern with performance. My concern would fall under design and security.

Is it worth to hide the details of inserting/updating/selecting behind a stored procedure? Or should I just allow the program to send select/update/insert SQL queries?

No employee (other then the developer and the DB admin) or customer ever access this table (They do not have permission from SQL). The username and passwords were created with security in mind.



Any thoughts or ideas?

Thanks for your time, Adrian

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Oct 5, 2004

Hi My friends

I have develop big Database System in Microsoft SQL Server 2000 and my DB System content more then 30 Table and also more then 150 Stored procedure and from that stored procedures I have call my the tables

But the problem when I change the name of any table, SQL Server don’t prompt my about the stored procedure that use that table .. so I cant remember witch Stored procedure use that table

By example if I am in programming language like C# or VB.NET when I try to change any name of any class the compiles catch all the error that coming from changing the name of the class and simply I will fix the problem because the compiler help me and list all the object content the error

But in SQL Server how can I search for stored procedure that use un existing table like compiler in any programming language ??

Or is there any why to solve my problem ??

And the above problem also there when I change the filed name

And thanks with my best regards

Fraas

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Drillthrough In Calculated Fields Enable When Drillthrough Option Is Disable In Original Fields, Is This A BUG?

Jan 21, 2008

Hi people
My users are having troubles with link to default drillthrough report when reports are exported to excel (they REALLY don't like this behavior ), so I decided set all of them disabled in report model, this work fine, but calculated field in reports has this drillthrough link.


Let me show you the situation. Entity Product has an UnitaryCost field, I set the EnableDrillthrough Property in False so when I export a report with this field, no link is shown.

But if I create in the report a calculated field Round(UnitaryCost) this field has a Drillthrough Link

Is this the standard and expected behavior? or its simply a BUG?

Have I done something wrong in my model? and in this case, How I can correct this?

regards.
Julio Diaz.

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Oct 19, 2006

This doesn't necessarily belong in this forum, but I'm starting here in the hopes of getting some direction.

Business users have asked me to "map" a spreadsheet to our Datawarehouse. The spreadsheet contains a lot of calculations.

I created a first pass, but it was difficult to map the Analysis Services cube data to the spreadsheet data and in the process I had to hard code a lot of things that will make the spreadsheet less flexible for additional data.

So my question is, where is the best place to put calculated fields. In my SQL Statements, in ths SSIS transformations, or in the Analysis Cube?

Any help, or pointers to more information, would be greatly appreciated.

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Apr 19, 2007

I had made some calculated fields within my data set. Later I had to change my stored procedure. When I refreshed my data set my calculated fields disappeared. Is there a way to not lose your calculated fields in a dataset when you refresh it?

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Jul 20, 2005

I have a table with some fields. break_mon, lunch_mon, dinner_mon, ent_mon,break_tue, lunch_tue, dinner_tue, ent_tue, .....etcI want to output the sum of the four monday columns as well as the sum ofthe four tuesday columns.I did this withSELECT break_mon+lunch_mon+dinner_mon+ent_mon AS mon_tot,break_tue+lunch_tue+dinner_tue+ent_tue AS tue_totFROM expense_reportI now want to add mon_tot and tue_tot AS total, but SQL is telling me thatit can not find mon_tot. Is there a way to do this? Thanks!DarrenMCP

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May 22, 2008



Hi ,

I have created a calculated data field for one of my data set. I use it for a table in my report.
But when I try to preview it, visual studio crashes and I get the following error message.

"An error occured during local report processing. An internal error occured on the report server.see the error log for more details."

I have not installd servers on my machine(only the sql tools). So I can not see error logs either.

Does any one know why this happenes?

Thanks

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Oct 1, 2007



I'm supposed to create a report like shown below.









Credit Tier
Jan-07
Feb-07
Mar-07

AA
0.00%
0.00%
0.00%

A
0.00%
0.00%
0.00%

B
0.00%
0.00%
0.00%

C
0.00%
0.00%
0.00%







Time columns go up to Dec 07. But I did not show all the columns.

The values are calculated as follows.
Field value for Jan07 = (No of Loans pass due in Jan07 / Total No of loans disbursed in Jan07)
Repayment due date is 5th of every month. if smbody does not pay on 5th, its considedred as pass due.


Source data tables look like this.

LoanTable(Disbursed date, userID, Amount, Status)

CreditTier table (Credit Tier, Rate) - Seems like no relationship with Loan table


we can identify pass due loans from status field in loan table. Status appears as 'Deliquency'.

Please Can any one help me to create this report?

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Jun 7, 2001

I have a problem.... I have a TSQL procedure that calculates employee overtime based upon days 1-5 of week being "in-week", and days 6-7 oweek being week-end overtime. The resulting data is then mailed to dept managers. My problem: for some reason the calculated colums are being generated at a width of 40 char per column. I somehow need to reduce the width to 8-10 characters per colum (this will eliminate the wraping that I currently get in my e-mails)... Any help would be appreciated... Thanks..Tom

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Feb 15, 2004

Hi
This may seem amazing and a stupid question but:

Consider there is a parent table A and child table B and we want to write a query that has some fields from A and a calculated field which indicates whether A has any child record in B or not. The Value 1 means Yes and 0 means No. Has anybody an idea to write this in SQL Server?

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Sep 21, 2015

I am trying to JOIN table on datetime column truncated to full minutes with other table, where I store time intervals (in order to have all minutes in result even when there was no event in main data table).

SELECT
dateadd(minute, datediff(minute, 0, StartTime), 0) as StartTimeMinute
,ApplicationName
,COUNT(*) as Requests
FROM dbo.Profiler as p INNER JOIN dbo.MinuteIntervals as i ON i.TIMEVALUE = p.StartTimeMinute
WHERE EventClass IN (10,12)
GROUP BY dateadd(minute, datediff(minute, 0, StartTime), 0), ApplicationName
ORDER BY StartTimeMinute

How to join on p.StartTimeMinute? I do understand why this doesn't work, as p.StartTimeMinute is calculated in my query, so JOIN cannot find it in original p table.

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May 22, 2008



Hi all

I have a calculated fields in report designer such as a + b + c + d. In sql server if I run this query

select a + b + c + d from table1

and any of a,b,c or d is null, the result is null.

whereas in calculated fields, it does not return null but infact ignores the null value and treats it as zero.

I want my calculated field to be null if any of the values are null.
Is it possible? I cannot use the isNothing function because I have too many fields and it will be quite cumbersome.

Thanks

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Sep 10, 2007


Hi everyone:

I am developing an SSRS report over a cube. When I drag and drop fields, it works fine. it runs in a few minutes. I am selectinng only from a single day - about 10,000 records. However, when I add some calculated fields it takes much longer. It's been running for 7 hours. The calculated fields fields are pretty simple. Some are selection of one field over another depending upon the value of a 3rd field. One is two fields multiplied together. One is a constant times a field. Something's obviously wrong here. Anybody seen this or have a solution?

Barry

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Jul 20, 2015

I have a simple report with a row grouping on teh Date and record_id from an sql query. I would like to find the row total.

The expression I have on the row is:

=IIF(Max(Fields!closing.Value) > 0, Microsoft.VisualBasic.Interaction.IIF(Max(Fields!opening.Value) > 0, IIF(Max(Fields!closing.Value) > Max(Fields!opening.Value), Max(Fields!closing.Value) - Max(Fields!opening.Value), Nothing), Nothing), Nothing)

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Jul 18, 2015

use Northwind
Go
select 
dbo.Orders.OrderID
,Cast(dbo.Orders.OrderDate As DATE)Order_Date 
, dbo.Customers.CustomerID 
, dbo.Customers.CompanyName 
, dbo.Products.ProductName

[code].....

I cannot use the alias field names as part of additional calculations for new columns. 

total_Amount and  Grand_Total cannot be done with my skill level.

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Mar 26, 2008



Hi,

I have three data sets. Data Set A is bound to my table in my report. There are also Data Sets B and C. All three data sets have the identical columns. I have setup data set A so that all of its fields are "Calculated". The calculation for each field will either pick the field from data set B or data set C based upon a parameter called BorC. So the calcualted fields in data set A look like the following:


=iif(Parameters!BorC.Value, First(Fields!MyField.Value, "dataset_B"), First(Fields!MyField.Value, "dataset_C"))

Problem is when I run the report I get internal error. Is it possible to populate one data set from the fields of another data set? If so is there some trick to doing this? Stripping this example down to one column in each of the data sets, and then just directly setting data set A from either B or C still gives me the same error. SO I set the one field in data set A to the following and it still doesn't work:

=First(Fields!MyField.Value, "dataset_B")

OR

=First(Fields!MyField.Value, "dataset_C")

This leads me to believe there is some fundamental problem with using another data set in a Calculated field. Since I think I have done this before I am convinced I am doing sommething wrong.

Any advice you have for me would be greatly appreciated!

Thanks.

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May 22, 2008

Hi

I am new to SQL Server and am migrating another database

In my original database I have a default(constant) type field and a calculated field both of which call the same user defined function: GetMyUID()

My Function GetMyUID() returns the current date, time and users initials, i.e. "20080522T09:31:15.250LSG"

When a record is first created both fields have identical values

As the record is updated over time my constant field stays constant and my calculated field reflects the time the record was last updated and the initials of that person. So my first field is called 'Created' and my second is called 'Updated'

I would have thought that something like this would be a pretty bog standard and very straightforward requirement in any database

However in SQL I am getting error messages about the return value being non deterministic

I searched the web and found advice that to sort the problem I need to use WITH SCHEMABINDING in my function definition

Unfortunately I am still getting the same 'non deterministic' error

I wonder if (in the quest to not have an overlong field) by looking up the persons initials from a 'STAFF' file rather than leaving the username in full tacked on to the end that this is causing the problem?

I can't imagine that what I am trying to achieve is rocket science but unfortunately have not been able to find any resource on the web that solves this issue for me

In desperation I turn to you

Please help (preferably by letting me have a few lines of code that return the current date/time followed by the username lookup of a Username's initials, here is a snippet of my code...


RETURN (Convert(VarChar(8),@DateTimeNow,112)+ Right(Convert(VarChar(30),@DateTimeNow,126),13)+dbo.myInitials())

Where the dbo.myInitials() calls:

RETURN (SELECT STAFF.Code from dbo.STAFF where STAFF.Login = dbo.myLogin())

and dbo.myLogin() calls

return UPPER(Right(System_User,PATINDEX('%\%',System_User)))

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Aug 10, 2015

I'm using the SQL below to work out recruitment figures. The query works well, but I now need to build this query into a DotNet application as a webpage. I therefore need to declare and manipulate the values such as 'Total', 'Jan' to 'Dec' and 'YearRecruited' in order to write these values into my chosen data control. I therefore need to know the datatypes of these calculated values.

Total I think is straightforward as DNAScreeningID is an int datatype. But what about the others?

SELECT YEAR(SamplingDate) AS YearRecruited,

COUNT(CASE WHEN month(SamplingDate) = 1 THEN DNAScreeningID END) AS 'Jan',
COUNT(CASE WHEN month(SamplingDate) = 2 THEN DNAScreeningID END) AS 'Feb',
COUNT(CASE WHEN month(SamplingDate) = 3 THEN DNAScreeningID END) AS 'Mar',
COUNT(CASE WHEN month(SamplingDate) = 4 THEN DNAScreeningID END) AS 'Apr',

[Code] ....

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Nov 29, 2006

Hello all,my first post here...hope it goes well. I'm currently working onstored procedure where I translated some reporting language into T-SQLThe logic:I have a group of tables containing important values for calculation.I run various sum calculations on various fields in order to retrievecost calculations ...etc.1) There is a select statement which gathers all the "records" whichneed calculations.ex: select distinct Office from Offices where OfficeDesignation ='WE' or OfficeDesignation = 'BE...etc.As a result I get a list of lets say 5 offices which need to becalculated!2) A calculation select statement is then run on a loop for each ofthe returned 5 offices (@OfficeName cursor used here!) found above.Anexample can be like this(* note that @WriteOff is a variable storing the result):"select @WriteOff = sum(linecost * (-1))From Invtrans , InventoryWhere ( transtype in ('blah', 'blah' , 'blah' ) )and ( storeloc = @OfficeName )and ( Invtrans.linecost <= 0 )and ( Inventory.location = Invtrans.storeloc )and ( Inventory.itemnum = Invtrans.itemnum )"...etcThis sample statement returns a value and is passed to the variable@WriteOff (for each of the 5 offices mentioned in step 1). This is donearound 9 times for each loop! (9 calculations)3) At the end of each loop (or each office), we do an insert statementto a table in the database.


Quote:

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Jun 5, 2015

This is so trivial but I cannot figure out where the calculated fields/measures area is in the PP window. Is there something to toggle it on and off? I used PP in Excel 2013 before and the area I'm talking about was at the bottom of the PP window. Now I'm with a new company who has Excel 2010 so I downloaded the PP add-in for Excel 2010. It is version 10.50.4000.0. This add-in does not have a calculated fields/measures are at the bottom of the PP window. Is it just a matter of 2010 vs. 2013 or is there a way to turn the frame area I'm talking about on?

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Oct 1, 2007



Can I make a calculated field by using two fields from different data sets?(I'm talking about SSRS data sets)

I tried to do that. But I got a error message.




"Report item expressions can only refer to other report items within the same grouping scope or a containing grouping scope."


Please can some one help me out?

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May 22, 2015

I am not sure if this is possible or not, we have two datasets and each one has an additional calculated field which breaks the value JobBilledExVAT into three years.

So it reports for example how much we billed in May 2015, 2014 and 2013.

I have got the table to display this when reporting on one dataset by grouping by year

The datasets both look similar to this 

SELECT
  Practice.ibvSalesByJob.JobBilledExVAT
  ,Practice.ibvSalesByJob.[Year]
FROM
  Practice.ibvSalesByJob
  INNER JOIN Practice.idvJobType

[Code] ...

The calculated field is 

=Switch(Fields!Year.Value = Parameters!Year.Value ,"15", Fields!Year.Value = Parameters!Pre1Year.Value ,"14", Fields!Year.Value = Parameters!Pre2Year.Value ,"13")
The field I am looking to add together is below
=Sum(Fields!JobBilledExVAT.Value)

If I do the below on the dataset associated with the matrix it displays the sum for each year correctly, I would however like to add the Sum(Fields!JobBilledExVAT.Value) from a different dataset (ABS1M) for the relevant year.

I tried this

=Sum(Fields!JobBilledExVAT.Value) + Sum(Fields!JobBilledExVAT.Value, "ABS1M")

However this adds 2015, 14 and 13 from ABS1M and doesn't add them individually if that makes sense? With the calculated field it only shows Year under the main dataset heading not 15, 14 and 13 separately.

I was think of using LOOKUP however I don't know how this would work as 15, 14 and 13 are not displayed under the dataset.

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Nov 12, 2015

I have created 60 queries and added them to my data model in Power Pivot/Excel 2016. I created some calculated fields for one of my queries but I would LOVE to know how to just copy these across all queries in the data model instead of having to create them in the data model for one query at a time. That will take forever. 

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