2005: Creating Aggregate Function From .NET Assembly
Jul 17, 2006
Hello,
I am learning SQL Server 2005. I have (correctly) written in .NET
assembly DemoSQLServer with aggregate function AvgNoMinMax in class
Demo and I have added assembly to database DemoSQLServer. Now I need
to create aggregate in SQL Server. I tried this way:
CREATE AGGREGATE AvgNoMinMax(@v float) RETURNS float EXTERNAL NAME
[DemoSQLServer].[DemoSQLServer.Demo].[AvgNoMinMax]
Unfortunately I have error:
Incorrect syntax near '.'.
I don't know what's wrong. Please help.
Thank you very much!
/RAM/
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Jan 5, 2007
I have compiled a dll with the following code:
Imports System
Imports System.Data
Imports System.Data.SqlClient
Imports Microsoft.SqlServer.Server
Imports System.Data.SqlTypes
Public Class SICTrans
Public Shared Function TransSIC(ByVal inpSIC As String) As String
'Dim conn As SqlConnection = New SqlConnection("context connection=true")
Dim NewSIC, TempSIC, tempFSIC As String
If Len(NZ(inpSIC)) > 0 Then
TempSIC = NZ(inpSIC)
If Len(TempSIC) < 5 Then TempSIC = Left("00000", 5 - Len(TempSIC))
tempFSIC = Left(TempSIC, 2) + "." + Mid(TempSIC, 3, 2)
If Val(Right(TempSIC, 1)) > 0 Then
tempFSIC = tempFSIC + "/" + Right(TempSIC, 1)
End If
End If
NewSIC = tempFSIC
TransSIC = NewSIC
End Function
Public Shared Function NZ(ByVal input As String) As String
If Not (input Is Nothing) Then
Return input
Exit Function
End If
Return String.Empty
End Function
End Class
Which compiles fine...
i then use the following code to create the assembly in SQL which is fine:
USE NARD
GO
CREATE ASSEMBLY SICCodeTrans
FROM 'c:SICCodeTrans.dll'
WITH PERMISSION_SET = SAFE
GO
but when i goto create the function with the following code it wont have it!
CREATE FUNCTION TransSICCode(@inpSIC varchar)
RETURNS varchar
AS EXTERNAL NAME
SICCodeTrans.SICTrans.TransSIC
GO
It gives me the following error message
Msg 6505, Level 16, State 1, Procedure TransSICCode, Line 1
Could not find Type 'SICTrans' in assembly 'SICCodeTrans'.
Any ideas??????????
Thanks
Marek Kluczynski
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Aug 2, 2006
Hi
I am a bit paranoid about what I just did to my SQL Server 2005 with this CLR experiment.
I created a Class Lib in C# called inLineLib that has a class Queue which represents an object with an ID field.
in another separate namespace called inLineCLRsql, I created a class called test which will hold the function to be accessed from DB, I referenced and created an instances of the Queue class, and retrieve it's ID in a function called PrintMessage.
namespace inlineCLRsql{
public static class test{
public static void PrintMessage(){
inLineLib.Queue q = new inLineLib.Queue();
int i = q.queueId ;
Microsoft.SqlServer.Server.SqlContext.Pipe.Send(i.ToString());
}
}
}
to access this from the db, I attempted to create an assembley referencing inLineCLRsql.dll. This didn't work as it complained about inLineLib assembly not existing in the db. I then attempted to create an assembley for inLineLib but it barfed saying System.Management assembly not created.
so what I did is (and this is where I need to know if I just ruined sql server or not):
1- ALTER DATABASE myDB SET TRUSTWORTHY ON;.
2- CREATE ASSEMBLY SystemManagement
FROM 'C:WINDOWSMicrosoft.NETFrameworkv2.0.50727System.Management.dll'
WITH PERMISSION_SET = UNSAFE
3- CREATE ASSEMBLY inLineLibMaster
FROM 'D:inLineServerinLineLibinDebuginLineLib.dll'
WITH PERMISSION_SET = unsafe
4- and finally
CREATE ASSEMBLY inLineLib
FROM 'D:inLineServerCLRSQLinlineCLRsqlinDebuginlineCLRsql.dll'
WITH PERMISSION_SET = SAFE
Everything works after those steps (which took some trial and error). I can create a sproc like:
CREATE PROC sp_test AS
EXTERNAL NAME inLineLib.[inlineCLRsql.test].PrintMessage
and it returns the Queue ID
Is there anything unadvisable about the steps above?
Thanks for your help
M
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Aug 15, 2007
Running [dbo].[insertlogin] ( @log = hiten, @pas = hiten ).A .NET Framework error occurred during execution of user-defined routine or aggregate "insertlogin": System.Data.SqlClient.SqlException: Must declare the scalar variable "@Log".System.Data.SqlClient.SqlException: at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection) at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) at System.Data.SqlClient.SqlInternalConnectionSmi.EventSink.ProcessMessagesAndThrow(Boolean ignoreNonFatalMessages) at Microsoft.SqlServer.Server.SmiEventSink_Default.ProcessMessagesAndThrow(Boolean ignoreNonFatalMessages) at System.Data.SqlClient.SqlCommand.RunExecuteNonQuerySmi(Boolean sendToPipe) at System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(DbAsyncResult result, String methodName, Boolean sendToPipe) at System.Data.SqlClient.SqlCommand.ExecuteNonQuery() at SqlServerProject1.StoredProcedures.insertlogin(SqlString log, SqlString pas).No rows affected.(0 row(s) returned)@RETURN_VALUE = Finished running [dbo].[insertlogin]. ***************************************************************all i am trying to do is : creating a SP in VS using managed code and then trying to execute it. But every time i get the above error. If you can tell me how to edit connection string in this that would be very helpful. At present i am using : Using conn As New SqlConnection("context connection=true") I tried to do "" ALTER ASSEMBLY SqlServerProject1 WITH PERMISSION_SET=EXTERNAL_ACCESS""but i get this error "" Msg 10327, Level 14, State 1, Line 1ALTER ASSEMBLY for assembly 'SqlServerProject1' failed because assembly 'SqlServerProject1' is not authorized for PERMISSION_SET = EXTERNAL_ACCESS. The assembly is authorized when either of the following is true: the database owner (DBO) has EXTERNAL ACCESS ASSEMBLY permission and the database has the TRUSTWORTHY database property on; or the assembly is signed with a certificate or an asymmetric key that has a corresponding login with EXTERNAL ACCESS ASSEMBLY permission. If you have restored or attached this database, make sure the database owner is mapped to the correct login on this server. If not, use sp_changedbowner to fix the problem.""" *********************************************************************Plz help
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Aug 21, 2007
Hiiiiiiii all
I have to make a user defined function in c# as the class liberary and create a dll file, now i want to use this function in SQL Server 2005 as a part of CLR Integration
I have tried like this
CREATE ASSEMBLY abc
FROM 'C:abc.dll'
WITH PERMISSION_SET = SAFE
but it gives me
incorrect syntax error
so plzzzzz anyone help me wht to do in my probbbbbbbbb???????
Pratik Kansara
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Oct 19, 2007
Can any1 tell me why i am getting an error
SELECT DISTINCT
--p.voucher,
--p.amount,
p.siteID,
b.siteID,
SUM((round(b.total,2,2)) - SUM(round(p.amount,2,2))) AS OutStandingBalance,
SUM((round(b.total,2,2)) - SUM(round(p.amount,2,2))) AS CashCheque,
SUM((round(b.total,2,2)) - SUM(round(p.amount,2,2))) AS Vouchers
FROM
BillingTotal b,
Payment p
--WHERE
-- s.sitename=@cmb1
--AND p.siteid = s.siteid
-- p.voucher = 0
-- p.voucher = 1
GROUP BY p.siteID,b.siteID
Msg 130, Level 15, State 1, Line 1
Cannot perform an aggregate function on an expression containing an aggregate or a subquery.
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Apr 12, 2007
I am trying to create an assembly on a sql server 2005 machine but it gives me following error:
Msg 33009, Level 16, State 2, Line 2
The database owner SID recorded in the master database differs from the database owner SID recorded in database 'XYZ'. You should correct this situation by resetting the owner of database 'XYZ' using the ALTER AUTHORIZATION statement.
I tried using the alter authorization statement to change the owner.
It did not work.
I am able to create same assembly on another test database but can not create it on this database.
Is this because of orphan logins?
Thanks for the help.
Harshal.
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Apr 12, 2007
I am trying to create an assembly on a sql server 2005 machine but it gives me following error:
Msg 33009, Level 16, State 2, Line 2
The database owner SID recorded in the master database differs from the database owner SID recorded in database 'XYZ'. You should correct this situation by resetting the owner of database 'XYZ' using the ALTER AUTHORIZATION statement.
I tried using the alter authorization statement to change the owner.
It did not work.
The same assembly is created on another test database but can not create it on this database.
Is this because of orphan logins?
Thanks for the help.
Harshal.
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Mar 12, 2008
I encountered something strange, deploying the following assemblies
CREATE ASSEMBLY [Sentry]
AUTHORIZATION [dbo]
FROM 'c:clrSentry.dll'
WITH PERMISSION_SET = EXTERNAL_ACCESS;
GO
CREATE ASSEMBLY [Sentry.XmlSerializers]
AUTHORIZATION [dbo]
FROM 'C:clrSentry.XmlSerializers.dll'
WITH PERMISSION_SET = SAFE;
GO
Sentry.XmlSerializers errored out with:
Msg 6218, Level 16, State 2, Line 2
CREATE ASSEMBLY for assembly 'Sentry.XmlSerializers' failed because assembly 'Sentry.XmlSerializers' failed verification. Check if the referenced assemblies are up-to-date and trusted (for external_access or unsafe) to execute in the database. CLR Verifier error messages if any will follow this message
[ : Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializerContract::CanSerialize][mdToken=0x600006e][offset 0x00000001][token 0x01000019]System.TypeLoadException: Could not load type 'Sentry.SentryDataService.SentryDataService' from assembly 'Sentry, Version=1.0.2764.18017, Culture=neutral, PublicKeyToken=null'. Type load failed.
The interesting thing is that when I deploy this locally on my machine, there are no problems whatsoever. Using sp_configure the servers appear to be set up the same way. The database also has trustworthy set on for both.
Anything, I could be missing? Thanks
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Nov 27, 2006
I created a UDT Type (using MS Server Express Edition and Visual Basic 2005 express) but I get some errors:
Msg 6556, Level 16, State 1, Line 6
CREATE TYPE failed because it could not find type 'UDTProj' in assembly 'UDTProj'.
Msg 6597, Level 16, State 1, Line 6
CREATE TYPE failed.
That is my code:
Public Structure UDT_interval
Private adresse As String
Private beginn As Date
Private ende As Date
End Structure
************in Transact-SQL
//register the UDTProj assembly
USE TestData;
CREATE ASSEMBLY UDTProj
FROM 'C:MS Visual StudioMyOutputinReleaseUDTProj.dll '
WITH PERMISSION_SET = SAFE;
// create the UDTProj type
CREATE TYPE dbo.UDTProj
EXTERNAL NAME UDTProj.[UDTProj];
or
CREATE TYPE dbo.UDT_interval
EXTERNAL NAME UDTProj.[UDT_interval];
>Msg 6556, Level 16, State 1, Line 6
CREATE TYPE failed because it could not find type 'UDT_interval' in assembly 'UDTProj'.
Msg 6597, Level 16, State 1, Line 6
CREATE TYPE failed.
can anyone help me?
Regards.
D.M
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Mar 7, 2007
Hi,I have developed a Stored procedure to output text to a text file, after doing a lot of reading here.
I want to be able to output data to a Postgres database, to be used for web mapping. I have referenced an Assembly Npgsql.dll so I can send updates to the postgres database when my ms sql database is updated. However, after building my class library, when I try to CREATE ASSEMBLY in sql server 2005 express, it sends out a message:
Msg 10301, Level 16, State 1, Line 1
Assembly 'ClassLibrary1' references assembly 'system.drawing, version=2.0.0.0, culture=neutral, publickeytoken=b03f5f7f11d50a3a.', which is not present in the current database. SQL Server attempted to locate and automatically load the referenced assembly from the same location where referring assembly came from, but that operation has failed (reason: 2(error not found)). Please load the referenced assembly into the current database and retry your request.
The error seems to be in the Npgsql.dll assembly, can anybody please shed some light on this.
I tried to load the system.drawing assembly, and can do so in Unrestricted mode. It then spits out the same problem for System.Windows.Forms.dll.
I am still very new to all of this so any help would be appreciated.
Cheers,
Jatz91.
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Apr 10, 2006
Hi
I want to use CLR for developing database object such as stored procedures.
I have read the "Getting Started with CLR Integration" from MSDN help and successfully create my first procedure.
I create an assembly in SQLServer2005 with this code:
CREATE ASSEMBLY helloworld from 'c:helloworld.dll' WITH PERMISSION_SET = SAFE
My questions are :
How should I deal with helloworld.dll after creating Assembly?
Can I delete this file?
What should I do for uploading my application on the webserver?
Should I upload any .dll file?
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Dec 20, 2007
Hello,
The main problem I am currently facing is that I do not have the following directory to place the DLL file: C:Program FilesMicrosoft SQL Server80ToolsReport Designer. It is the "Report Designer" part that is missing. I tried adding it, but that didn't work.
Any ideas why that is?
Thank you.
-Gumbatman
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Feb 21, 2008
Does anyone know how to make a query and use an aggregate function? This is my current code...any help would be great.
"SELECT tblTopic.Topic_ID, tblTopic.Subject, MAX(tblThread.Message_date) AS MessageDate, tblThread.Message FROM (tblThread INNER JOIN tblTopic ON tblThread.Topic_ID = tblTopic.Topic_ID) WHERE (tblThread.Message_Date LIKE '%' + @fldGenus + '%' GROUP BY tblTopic.Topic_ID, tblTopic.Subject, tblThread.Message">
Also, How can i limit the query to only bringing up 5 records?
I'm trying to get a datagrid to show the 5 most recent forum posts for a particular category.
Thanks.
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Mar 9, 2007
Hello, I need to use last() aggregate function in MS SQL Server 2005 but it is not built in.How to replace this functionality?Thanks.
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Apr 3, 2007
I have three tables, tblschedule, tblresource and tblemployeename.
in tblschedule table there are scheduleID, resourceID and employeeID. In tblResource there are ResourceID and ResourceName. In tblemployeename there are EmployeeID, EmployeeFName and EmployeeLame. I want to have a report that show how many times the resource has been reserved by employee. i would like to have a report. Look like the following:
ResourceName EmployeeFName EmployeeLName (Or use EmployeeName) Number of record.
How to write a query? I use asp.net as front end.
Thank for your help.
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Mar 4, 2004
Hi
I have a query where I need to use an aggregate function MAX in where clause, I know that MAX cannot be used in a Where clause because it is an aggregate function. Can anyone help me out in writing this query?
SELECT * FROM ACCOUNT_REVIEW AR INNER JOIN
QUESTION_RESPONSE ON
AR.Review_ID = QUESTION_RESPONSE.Review_ID
WHERE (MAX(AR.Review_Date) IS NULL)
I need it asap. Thanks in advance,
K
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Mar 19, 2006
Hey everyone, I'm looking for a way to insert a count of a set of records into a table and then read that table and produce an XML file from that dataset. The problem that I'm coming across is that when you do this type of query you have to specify one of the values from the table and then get a count for the number of records of that particular range of values.
The table that I am trying to get the data from will look something like this:
ItemID ModuleID Description ......1 2869 blah blah blah2 2869 blah blah blah3 2869 blah blah blah4 2690 bit bit bit5 2690 bit bit bit6 2690 bit bit bit
So I count the 2869's and 2690's and place the ModuleID and the count of the ItemID's in another table.
Then I need to extract the data from the table and put it into an XML file that is readable by the ReadXML method in ASP.NET.
So far I've got the SPROC to do only one record at a time but I would like one that does the whole table rather than one at a time using a parameter.
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Mar 8, 2004
I am trying to write an update statement based on an aggregate and it will not let me. Please find below the SQL.
update abtimesummary
set hours = sum(a.hours)
from abtimestore a
join abtimesummary b
on (cast(a.weekno as varchar(10)))+'-'+(cast(a.empno as varchar(10))) = b.summaryid
and this is the error message:
Server: Msg 157, Level 15, State 1, Line 2
An aggregate may not appear in the set list of an UPDATE statement.
Can someone tell me how to get round this please?
Many thanks
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Jun 15, 2004
hi there,
I have a query that works on sybase and want to make it also works on SQL Server.
The problem is that in this query I 'm using a subquery in an aggregate function.
It seems that SQL Server unlike Sybase doesn't support the use of subquery in aggregate function.
How can I overcome this problem.
Thanks,
Fady
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Jan 20, 2006
I am working on a view in SQL Server 2005.
I am trying to get a list of the number of sessions each user had by user. I tried doing it this way, but
SELECT userid, MAX
((SELECT COUNT(DISTINCT sessionId) AS SESSIONCOUNT
FROM dbo.Sessions AS OD
HAVING (sessionId = O.sessionId))) AS MAXSESSION
FROM dbo.Sessions AS O
GROUP BY userid
but it throws an error 'Cannot perform an aggregate function on an expression containing an aggregate or subquery.'
Is there an elegant solution for this?
Thanks,
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Aug 7, 2007
Hello,
I column that calculated at run time in insert , can i gruop by this column,the new one that not exist yet
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Apr 11, 2008
I have a table like this below:
<PRE>
Page Book Release MaxPages
1234ABC A1
1234ABC B2
9999ABC D1
9999ABC E2
7777ABC A1
7777ABC C2
</PRE>
I want to select every page of the book, but only the highest release of that page.
Something Like:
Select Book, Page, Max(Release), MaxPages
From Table
But I can't quiet figure it out.
Thanks for any help.
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Feb 6, 2014
If you use Coalesce with Count will it return all values even when null? Reason I pose this question to you is that I am running the below query and am getting escalated results than what should be returned. 1st stop on the debug train is how does Coalesce handle it....for example Boston should return only 143 but the query retunrs 194 for Boston?
Code:
Select
Count(NumOnsite),
originatingCity,
Coalesce(Convert(varchar(4000),NewspaperNames), Convert(varchar(4000),MagazineNames)) As PaperNames
From readytoshipOffsite
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Jul 2, 2015
Why aren't we getting proper MAX(DOJ) value in Weird_Maxgroup Column in the below query ? Similar thing happens with MIN() function as well.
Is there something that I am missing here ?
;WITH CTE AS
(
SELECT 1 AS ID, 10000 AS SALARY,GETDATE() AS DOJ
UNION ALL
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UNION ALL
SELECT 3, 190000,GETDATE() + 10
[Code] ....
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May 6, 2008
Hello,
I want to count how many occurences their is of each date that is returned by my sql query. I am not sure how to add the aggregate function code to my query I know how to just tell it to count all records, but not to tell it to count for each group of dates. For example I want it to count how many times 5/6/08 shows up in the returned results and so on. Here is my query I currently have. Any help would be greatly appreciated! Thanks!
The enc_timestamp is my date field.
Select a.template_id, a.enc_timestamp, a.created_by, b.first_name, b.last_name, b.last_name +', ' + b.first_name as fullname
From template_audit a
Join user_mstr b on a.created_by = b.user_id
GROUP BY a.template_id, a.enc_timestamp, a.created_by,b.first_name, b.last_name
Having a.template_id IN (543,3172,3031,3030,3134,3135,3171,1401,1937,3985,3173,2320,57,849,1775,1400,1747,3695,3957,3750,3954,3027,3241)
ORDER BY a.enc_timestamp, b.first_name, b.last_name;
Thanks in advance,
Sherri
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May 22, 2008
Hi guys,
Does anybody know a convenient way to return the product of a column, similar to something like the 'sum' function?
If I have a table of form id-date-value, I'd like to do something like:
select id, date, product(val)
If not, does anyone know of a way one could structure this as a subquery?
If all else fails, I suppose I'll have to resort to a loop or cursor, but I'd rather not.
Any help would be much appreciated.
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Jan 15, 2014
I am trying to use the following syntax and it is saying I can't use an aggregate function in a subquery. I can't use a GROUP BY in this case because if another field in the project table (such as status) is different, that project will show up twice.So in this case I am using this syntax to show the most recent quote within the project.
SELECT PROJECT.*, QUOTE.QuoteDate, QUOTE.QuoteCode
FROM PROJECT LEFT JOIN QUOTE ON PROJECT.ProjectID = QUOTE.ProjectID
WHERE QUOTE.QuoteDate=(SELECT Max(Q.QuoteDate) FROM QUOTE Q WHERE Q.ProjectID = PROJECT.ProjectID);
My goal here is to show the most recent quote within each project (there can be multiple revisions of a quote within each project). I want to show other fields such as the status of the quote, but if the status is different between quotes, the GROUP BY on that field will cause it to be listed more than once. All I want to show is the most recent quote for each project.
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Dec 23, 2014
I have a query that I need to group by by using the aggregate function using MSSQL...
I want to be able to group the following columns into ONE line:
AddedDescription, OurRef, MaterialName, StockFamily, DateCreated, WJCStatusID AND THEN have WeightToSend Summed for all lines that are grouped above.
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Mar 18, 2006
Hi,
I just started database class
Today is the first day i'm writtng code in sql
SO when i try to run this code
SELECT CUSTOMER.CUS_CODE,CUS_BALANCE, SUM(LINE_UNITS*LINE_PRICE) AS TotalPurchases
FROM CUSTOMER, INVOICE, LINE
WHERE CUSTOMER.CUS_CODE=INVOICE.CUS_CODE AND INVOICE.INV_NUMBER=LINE.INV_NUMBER
GROUP BY CUSTOMER.CUS_CODE;
It says "You tried to execute quiry that does not include the specified expression 'CUS BALANCE' as a part of aggregate function.
Please help me to fix it.
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May 6, 2006
I have made an aggregate function sql (as far as I understand).I need the sum but also the features column. But I can only read one column in the select.Here is the select trying to read two columns:
select oitems.catalogid,oitems.features, sum(oitems.numitems) as SumOfItems from oitems
here is the error:
[Microsoft][ODBC Microsoft Access Driver] You tried to execute a query that does not include the specified expression 'features' as part of an aggregate function.
...anyone?
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Jun 30, 2007
Hi,
I've the following query:
select F_Mode, Issue_Count, Sum(Issue_Count) as IssueSum, milestone from rpt_fact_Paretos
Group By F_Mode having milestone = 'SDS'
Sample Data:
F_Mode Issue_Count milestone
Fail1 5 SDS
Fail2 6 SDS
If the above query is executed, the resultset is:
Fail1 5 5 SDS
Fail2 6 6 SDS
Question: I'm not getting the SUM of Issue_Count. I agree that I'm using F_Mode as Group By and hence the result. But if I use milestone as Group By I won't get all the F_Mode in the result set.
I'm looking for a result like this:
Fail1 5 11 SDS
Fail2 6 11 SDS
How can I achievce this?
Thanks in advance,
SD
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Mar 21, 2008
SELECT [LastNameOfProfessor], avg(ProfessorRating) AS [Average] FROM [Table1] GROUP BY [LastNameOfProfessor]
How would I order this by [Average]?
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