Need To Union And Group Split Databases
Jun 10, 2008
We had a divestiture within our company. Now what used to be contained in one database in now split into two databases. One showing all history and one being all current data as of 6/1/2008. Is there an easy way to Union or Join these? Right now I'm currently doing a simple UNION ALL, but can't group the two select statements:
SELECT
Year,Location,QtySold
FROM
historydb
UNION ALL
SELECT
Year,Location,QtySold
FROM
currentdb
Can't do a subset and group both of these selects. How would some of you pro's do this? Right now I can put this in a simple view and then create a SP off of this view that would do this grouping, but it seems like I should be able to do it all in one query. Thanks.
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Mar 30, 2000
I have 2 tables, each with one ID field, a separate
Date and Time fields and a number of other fields.
The tables contain duplicates on the ID field.
I want to do a UNION keeping only the record with the latest
Date and Time.
This would work:
SELECT MyTab.myKeyField, Max(MyTab.myDate) AS myDate
FROM (SELECT myKeyField, myDate
from Table1
union
SELECT myKeyField, myDate
from Table2) AS MyTab
GROUP BY MyTab.myKeyField
But is only taking care of Date, not Time (some records have
the same date but different times)
The other problem is, when I add more fields, I have to
include them in the GROUP BY clause, and this way I end up
with duplicates (because some other fields have different
values)
Is there a way to do this?
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Jul 23, 2007
I'm converting our companies binary file data to SQL Server data. I'm a developer, not a dba, and can't seem to get my company to hire a dba, so I need some advice from the community. I have an application running right now, it looks like it will take a week to run. Here's my estimates of the database size once it 's finished being loaded:
Database Size: 20 Gig
Largest Table (# of rows): 15 million rows
Number of Tables: 37
Other Details: I'm going to use Web Merge Replication to replicate filtered data to 500 customers.
QUESTION:
At what point do I need to consider splitting the database up onto multiple servers?
Or, is it better to split up the database into multiple databases on one server?
Someone suggested to me to split up each customers data into a separate database on the server (i.e. ~500 databases). Is this an accepted practice?
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Nov 13, 2015
I am having an issue when trying to union all between two databases.
This is the error:
Implicit conversion of varchar value to varchar cannot be performed because the collation of the value is unresolved due to a collation conflict.
I have updated the collation in both DB to Latin1_General_CI_AS and I am still getting the error when running the query.
The queries run separately ok. why I am still getting the collation error.
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Oct 17, 2007
What is the standard way to union tables with exactly the same schema that are in different databases?
For example:
Code Block
USE db1 SELECT * FROM table1
UNION
USE db2 SELECT * FROM table2
this will return the following error:
Msg 156, Level 15, State 1, Line 3
Incorrect syntax near the keyword 'use'.
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Feb 5, 2008
Hi everyone, I'm working with SSRS 2000 and I have my report grouped by =Fields!ID.Value , but each ID has just the ID#, or an A or OT at the end. EX. ID# 12345, is divided and shows me like if there are 3 different Employees: 12345, 12345-A, and 12345-OT. I want 12345 and 12345-A, to be grouped in one, and 12345-OT, be displayed seperately. Is this possible? Do I have to write a special command??? all help is useful so please help.
Thanks,
Abner
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Jul 20, 2005
Hello,So my table contains say 100,000 records, and I need to group thecategories in fld1 by the highest count of subcategories. Say fld1contains categories A, B, C, D, E.All of these categories contain subcategories AA, AB, AC, AD,...AJ, BA,BB...BJ, CA, CB, CC...CJ, etc in fld2.I am counting how many subcategories are listed for each category. LikeA may contain 5 of AA, 7 of AB, 3 of AC, 11 of AD...1 for the rest and20 of AJ. B may contain 2 of BA, 11 of BB, 7 of BC, and 1 for the rest.I want to pick up the top 3 subcategory counts for each category. Wouldlook like this:Cat SubCat CountA AJ 20A AD 11A AB 7B BB 11B BC 7B BA 2So event though each category contains 10 subcategories, I only want tolist the top 3 categories with the highest counts as above. If I justdo a group by and sort I can get this:Cat SubCat CountA ... ...AAAAAA...B ... ...BBBBB...But I just want the top 3 of each category. The only way I can think ofto do this is to query each category individually and Select Top 3, andthen Union these guys into one query. The problem is that I have tohardcode each category in the Union query. There may be new categoristhat I miss. Is there a way to achieve what I want without using Union?Thanks,Rich*** Sent via Developersdex http://www.developersdex.com ***Don't just participate in USENET...get rewarded for it!
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Sep 19, 2007
Hi all,
I have two table having datas like
Table1
--------------------------------------------------------------------
A C1 C2 C3 C4
--------------------------------------------------------------------
x 0 0 3 2
x 0 1 0 2
x 0 0 2 1
y 1 5 2 0
Table2
--------------------------------------------------------------------
A C1 C2 C3 C4
--------------------------------------------------------------------
x 0 0 1 4
y 1 0 3 1
y 1 2 0 0
y 0 0 5 1
select * from(
select A,C1,C2,C3,C4 from Table1 group by A
union
select A,C1,C2,C3,C4 from Table2 group by A
)as t
Result:
--------------------------------------------------------------------
A C1 C2 C3 C4
--------------------------------------------------------------------
x 0 1 5 5
y 1 5 2 0
x 0 0 1 4
y 2 2 8 2
But i need the result like i.e grouped by column 'A'
--------------------------------------------------------------------
A C1 C2 C3 C4
--------------------------------------------------------------------
x 0 1 6 9
y 3 7 10 2
select * from(
select A,C1,C2,C3,C4 from Table1 group by A
union
select A,C1,C2,C3,C4 from Table2 group by A
)as t group by A
The above query gives the following error
[Error Code: 8120, SQL State: S1000] Column 't.C1' is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause.
Please help me out.
-Anand
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May 15, 2015
Here is my sql code. I'm using a "union all" to merge Incidents and Service Requests into one table. This works fine when I don't use the "group by". When using "group by" to get the total number of tickets per "Area" it is giving me duplicates. So it is returning a distinct list of "Area" from both select statements.
SELECT
IRAreaDN.DisplayNameas 'Area'
,Count(IR.Id) as 'Total Requests'
--,IRSupportGroupDN.DisplayNameas 'Support Group'
--, CAST(DATEADD(MI,DATEDIFF(mi,GETUTCDATE(),GETDATE()),IR.CreatedDate) AS DATE)as 'Created Date'
--, CreatedByUser.UserName as 'Created By User ID'
[Code] ....
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Mar 9, 2008
I have a query similar to the following, but it gives the following error:
'Invalid column name 'GroupName'.'
SELECT 'Primary' as GroupName, City
FROM PrimaryTable
UNION ALL
SELECT SpecialGroupName AS GroupName, City
FROM Table2
GROUP BY GroupName, City
GroupName is varchar(30)
Any ideas why this would fail. Thanks in advance.
Terry
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Jul 20, 2005
I attempted to create a view in SQL Server 2000 that Unions twoqueries. The first part of the query gets data from the local server,the second part gets info from a linked server. (The query works finein Query Analyzer.)I received this error when I tried to save the query:ODBC error: [Microsoft][ODBC SQL Server Driver] The operation couldnot be performed because the OLE DB provider 'SQLOLEDB' was unable tobegin a distributed transaction.[Microsft][ODBC SQL Server Driver][SQL Server][OLE/DB providerreturned message: New transaction cannot enlist in the specifiedtransaction coordinator.]After a little reading I discovered the "Database limitation":"A view can be created on a table only in the database the viewcreator is accessing".That's my problem... is there a simple solution or alternative tocreating a view?Thanks,Matt
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May 14, 2015
I have a wide fact table that I'm feeding to an SSAS cube. I was advised that splitting the measure group into two will improve performance when querying the cube.
I cannot find any documentation that supports this, in fact I get a blue curved line suggesting that I merge the measure groups since they have the same dimensionality and granularity.
I guess the best practice is what the blue line states, but without knowing the internals of SSAS I can undestand that a smaller measure group may be easier to handle, or create more specific aggregations for.
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Feb 18, 2008
How can I stop a group from being split across 2 pages?
1 table group
1 detail group consisting of 2 rows, can be N number of these per table group
e.g.
TG1
DG1row1
DG1row2
DG2row1
DG2row2
...
DGnrow1
DGnrow2
TG2
DG1row1
DG1row2
DG2row1
DG2row2
...
DGnrow1
DGnrow2
<--page break should occur here-->
TG3
DG1row1
DG1row2
DG2row1<--but it is actually appearing somewhere like this-->
DG2row2
...
DGnrow1
DGnrow2
If TG can fit on one page, then it should do so
I can't put a page break after a group, as it may only be 4 rows, this would be too wasteful
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May 1, 2015
I was contacted by the SAN team to test backup/restore of larger databases using a split-mirror backup (BCV) or clone that is taken from production db server and copied to another sql box. They want to use this process once a week. I see the mounted drives with the data/log files. All looks good. Initially I attempted to attach the databases and received (Unable to open the physical file db.mdf Operating System Error 5 Access is denied). I manually granting SQLServerMSSQLUser$<computer_name>$<instance_name> on all of the physical files 20 total. That worked.
Since this will be weekly, the SAN team performed the copy again and now none of the databases can communicate with the newly copied files. NTFS permissions need to be set again. I'm getting (Operating System error 21: the device is not ready). Is there something that I'm missing in this process how the vendor BCV clones the data and SQL communicates with the copied files as I was thinking it would be more automated process?
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Sep 22, 2014
I am trying to use SQL to pull unique records from a large table. The table consists of people with in and out dates. Some people have duplicate entries with the same IN and OUT dates, others have duplicate IN dates but sometimes are missing an OUT date, and some don’t have an IN date but have an OUT date.
What I need to do is pull a report of all Unique Names with Unique IN and OUT dates (and not pull duplicate IN and OUT dates based on the Name).
I have tried 2 statements:
#1:
SELECT DISTINCT tblTable1.Name, tblTable1.INDate
FROM tblTable1
WHERE (((tblTable1.Priority)="high") AND ((tblTable1.ReportDate)>#12/27/2013#))
GROUP BY tblTable1.Name, tblTable1.INDate
ORDER BY tblTable1.Name;
#2:
SELECT DISTINCT tblTable1.Name, tblTable1.INDate
FROM tblTable1
WHERE (((tblTable1.Priority)="high") AND ((tblTable1.ReportDate)>#12/27/2013#))
UNION SELECT DISTINCT tblTable1.Name, tblTable1.INDate
FROM tblTable1
WHERE (((tblTable1.Priority)="high") AND ((tblTable1.ReportDate)>#12/27/2013#));
Both of these work great… until I the OUT date. Once it starts to pull the outdate, it also pulls all those who have a duplicate IN date but the OUT date is missing.
Example:
NameINOUT
John Smith1/1/20141/2/2014
John Smith1/1/2014(blank)
I am very new to SQL and I am pretty sure I am missing something very simple… Is there a statement that can filter to ensure no duplicates appear on the query?
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Jul 30, 2007
I have a huge MDF File - 120 GB File (Had setup as 1 MDF initially) -- Did not anticipate that the DB would grow to that size!!
Anyways.. I heard that the general performance woul grow if i had them as "File Groups"..
Is there anyway - to split the existing MDF file into Mutliple files as a File Group?
Where should i start? Can someone please direct me..
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Jul 23, 2014
So we have our HA group servers and databases, now we want to deploy schema changes to the HA group databases.
1.) Can we deploy the changes to Server2.mydatabase whilst still having Server1.mydatabase available to users?
2.) If yes, what is involved in doing so
3.) If no, What is the best suggestions to apply schema changes to HA databases.
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Oct 28, 2013
automatically replicates new databases to Availability Group partners - if you do a little prep work on your environment first.To make it work:
1) Create linked servers on all group members pointing to all other servers in the group, with names matching the hostnames they represent.
2) Ensure suitable credentials (or 'current context' impersonation) for linked servers. Also: Enable RPC and RPC OUT
3) Run the DDL code below.
4) Schedule hadr_replicate_queue on [master] to run as often as you want initial syncs to occur. Every 5-10 minutes is plenty for most purposes.
5) Connect to an availability group listener and call CREATE DATABASE :)
I use a slightly more extended version of this code at home to do things like permissions synchronization across replicas - I essentially allow applications to install direct to an availability group replica and then have all the relevant objects replicate to other nodes. I don't really like going through manually and doing things, even though there's an AddIn from SQLSkills for management studio - it still requires manual intervention.
The main use I have for this at home is that I'm using the Azure pack, and want to automatically ensure that my newly created 'SQL Server Cloud' databases are highly available, plus it means when I install a non-alwayson aware product it doesn't require any extra work afterwards to allow failover to another machine.
* AlwaysOn Self-Population Script
* By: Steve Gray / steve@mostlyharmful.net
* Usage: Free, but buy me a beer if you're ever in Brisbane.
**/
USE [master]
GO
IF EXISTS (SELECT * FROM sys.tables WHERE name='hadr_pending_replicate')
[code]....
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Apr 28, 2014
I came across an issue while migrating from SQL 2005 to SQL 2012 and using AlwaysOn Group. For some strange reason, when ever i connect to the Listener name for each AlwaysOn group, it list all the databases which is on the SQL instance, so i would be able to see databases that is not part of that Availability Group. I am not using default port, so have to put the port after the Name to connect and both Instance and Listener are using different port.
Testing the fail over works fine too, when i perform a manual failover, i can connect to any of the databases in the group from my application with no problem.
Considering that the Listener Port is different to the port which the instance is using?
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Apr 20, 2015
I am setting up Availability Groups and I want to use the secondary replica to perform the full copy_only backups to reduce the load on the primary replica.But what is the best way to check for successful full backups on Availability Group databases?
Previously I could check the system table msdb.dbo.backupset but this is not available for copy_only backups.So I wonder how people are monitoring that their full backups have been successful?
Do you just check that the SQL Agent job that runs the backup was successful?
Or do you search the SQL Server Error Log for entries like "Database backed up. Database: xxx" where database xxx is in an Availability Group?
Or is there a better method?
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Jun 12, 2014
SQL Server 2008 r2...
I have a query which does 3 selects and Union ALLs each to get a final result set. The performance is unacceptable - takes around a minute to run. If I remove the Union All so that the result sets are returned individually it returns all 3 from the query in around 6 seconds (acceptable performance).
Any way to join the result sets together without using Union All.
Each result set has exactly the same structure returned...
Query below [for reference]...
WITH cte AS (
SELECT A.[PoleID], ISNULL(B.[IsSpanClear], 0) AS [IsSpanClear], B.[SurveyDate], ROW_NUMBER() OVER (PARTITION BY A.[PoleID] ORDER BY B.[SurveyDate] DESC) rownum
FROM[UT_Pole] A
LEFT OUTER JOIN [UT_Surveyed_Pole] B ON A.[PoleID] = B.[PoleID]
[Code] .....
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Apr 29, 2008
Why the sequence different?
select * from (
select id=3,[name]='Z'
union all select 1,'G'
union all select 2,'R'
union all select 4,'Z'
) as t
order by [name]
--result:
---------
--1 G
--2 R
--4 Z
--3 Z
select * from (
select id=3,[name]='Z'
union select 1,'G'
union all select 2,'R'
union all select 4,'Z'
) as t
order by [name]
--result:
----------
--1 G
--2 R
--3 Z--changed
--4 Z
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Sep 29, 2015
I have an SSRS 2012 table report with groups; each group is broken ie. one group for one page, and there are multiple groups in multiple pages.
'GroupName' column has multiple values - X,Y,Z,......
I need to group 'GroupName' with X,Y,Z,..... ie value X in page 1,value Y in page 2, value Z in page 3...
Now, I need to display another column (ABC) in this table report (outside the group column 'GroupName'); this outside column itself is another column header (not a group header) in the table (report) and it derives its name partly from the 'GroupName' values:
Example:
Value X for GroupName in page 1 will mean, in page 1, column Name of ABC column must be ABC-X Value Y for GroupName in page 2 will mean, in page 2, column Name of ABC column must be ABC-Y Value Z for GroupName in page 3 will mean, in page 3, column Name of
ABC column must be ABC-Z
ie the column name of ABC (Clm ABC) must be dynamic as per the GroupName values (X,Y,Z....)
Page1:
GroupName Clm ABC-X
X
Page2:
GroupName Clm ABC-Y
Y
Page3:
GroupName Clm ABC-Z
Z
I have been able to use First(ReportItems!GroupName.Value) in the Page Header to get GroupNames displayed in each page; I get X in page 1, Y in page 2, Z in page 3.....
However, when I use ReportItems (that refers to a group name) in the Report Body outside the group,
I get the following error:
Report item expressions can only refer to other report items within the same grouping scope or a containing grouping scope
I need to get the X, Y, Z ... in each page for the column ABC.
I have been able to use this - First(Fields!GroupName.Value); however, I get ABC-X, ABC-X, ABC-X in each of the pages for the ABC column, instead of ABC-X in page 1, ABC-Y in page 2, ABC-Z in page 3, ...
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Nov 6, 2006
Hi all,
I have a Union All transformation with 4 inputs and one output when I debug the package the sum of the different inputs rows does not match the row count in output.
I don't understand, I've used the Union All transform many times and I've never seen this.
Any idea why this could happen ?
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Dec 10, 2007
Dear Readers,Is it possible, like in Access, to link to tables in other SQL databases that are on the same server? I have a query that I originally had in Access that queered from multiply databases. It did this by having those other tables in the other databases linked to the database that had the query.
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Nov 27, 2007
Hi!
I've posted a feedback with Microsoft to see if we can get them to fix the issue described below, but so far no one from Microsoft has commented to let us know what they're doing about this problem! I'm posting this here to see if maybe we can get more people to rate this feedback or chime in on what a pain it is! Please feel free to add your own comments or how you had to work around this issue and whether or not you think this is something Microsoft should be addressing NOW.
https://connect.microsoft.com/SQLServer/feedback/ViewFeedback.aspx?FeedbackID=311679
Provide Individual Page Numbering per Group and Total Pages per Group
Currently in a Reporting Services report, you can't readily reset the page number for each group in a table, nor can you display the total number of pages per group. For example, if I'm printing invoices and each invoice is a separate group, I'd like to be able to print "Page 1 of 5" , "Page 2 of 5" etc. for the first invoice, then "Page 1 of 3" when the next invoice begins, and so on. This was easy in Crystal Reports. I realize that Crystal Reports has a two-pass process that enables that kind of pagination. However, this is REALLY important functionality that's just missing from Reporting Services and I'm hoping you'll provide it REALLY SOON! Yeah, I know there are work-arounds if you can know exactly how many rows of information there are on each page. But gosh! That's not practical, especially if you have second level groups inside the main group or text blocks in rows that can 'grow' to more than one line. I've read a couple of work-arounds, but none of them works correctly and consistently when more than one user is running the same report or when you print the report while you're looking at it on the screen. I still may need access to the overall report page number and the overall total number of pages, so don't get rid of that. It's just that if you're doing this already for the entire report, I don't see why you can't do it per group! Lots of people have been asking for this for years, and I don't understand why it hasn't been implemented.
I've read a few articles on this topic, but no one has come up with a decent work around. My theory is that Microsoft should be addressing this immediately. This is major functionality that's just plain missing from SSRS and should have been there from the start. If anyone from Microsoft can let us know what's going on with this issue or if anyone would like for me to clarify this further, feel free to let me know.
Thanks!
Karen
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Nov 6, 2015
I have an SSRS report with groups that when exported to excel contains drill-in's (plus marks on left side). The issue I have is that for all the groups in the drill-in, those cells become merged. I want to keep the group drill-in but have the cells UNMERGED. I have heard this can be done with the RDL XML but I don't know what to modify to accomplish this.
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Jan 10, 2014
I'd like to ask how you would get the OUTPUT below from the TABLE below:
TABLE:
id category
1 A
2 C
3 A
4 A
5 B
6 C
7 B
OUTPUT:
category count id's
A 3 1,3,4
B 2 5,7
C 2 2,6
The code would go something like:
Select category, count(*), .... as id's
from TABLE
group by category
I just need to find that .... part.
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Sep 25, 2003
I have a user in SQL Server with a NT login of Mike
I changed his NT account to Mikel in User Manager
Now when I try to add Mikel, Im getting error 15401.
Do I need to delete NT login in SQL Server 'Mike' account first ?..before adding 'Mikel' ?
Can I go into the Master database and just change Mike login to Mikel ?
Thank you
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Feb 28, 2014
I'm having a fight with Reporting Services at the minute when trying to compute an average at the row group level for a value summed in a column group.I have the following column groups:
Year
Month
Date
And the following row groups:
Region
Product
SubType (hidden, data at the date level is summed to Product)
At the moment I'm computing the average for SubType for each Date at the Product level (giving a decimal value), so for each day I end up with a nice average, that works. However I am unable to average that average over the whole Year for a Product. The issue being that I'm trying to combine Row Groups (Product) and Column Groups (Date/Year)
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May 1, 2014
select top 15 count(*) as cnt, state from table
group by state
order by cnt desc
[code[...
Can the above three queries be combined into one and still be fast, if so how?What i am trying to go is an item count, by group, similar to ones Inbox in Outlook.
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Nov 21, 2007
I have a need to show a row inside a table group to simulate a header row for the data rows inside the group. The table will not have a real header or footer. Thanks for the help.
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Jan 5, 2008
I have one domoain in the forest. The domain level is set to Windows 2000 native mode and forest level is set to mixed mode. My SQL server 2005 server joined to this domain. I added a brand new domain local group and add a normal user account to this domain local group. I login to the SQL server 2005 server and make a query "SELECT * FROM sys.login_token". I cannot see my domain local group in sys.login_token. However, if I add my account to a global group, I can see it there.
Then, I setup another forest. This time, I have domain level set to Windows 2003 mode and forest level is set to Windows 2003 native mode. I do the same testing. This time, I can see my domain local group in sys.login_token.
Why does SQL server 2005 has this limitation? Is it a bug?
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