Having A Mental Block On An Exclusive Join

Feb 9, 2008

Hi, I've got three tables that I'm trying to pull data from. The first is a family of rings, the second is the individual rings and the third relates one ring to another:

RingFamilies
------------------------------------
FamilyID pk | FamName
------------------------------------

Rings
-------------------------------------------
RingID | FamilyID fk | RingName
-------------------------------------------

RingAssociations
-----------------------------------------
RingID1 pk/fk | RingID2 pk/fk
-----------------------------------------

I'm trying to pull a list of RingIDs and names for a given FamilyID. To complicate it, I want to exclude rings that are already associated to a given RingID, i.e. I only want the unassociated rings in a given family. To complicate it even a little more then name needs to be the FamName+RingName...is this possible? Thanks!

Given @FamID and @RingID
Result Table
------------------------------------------------
RingID | FamName + RingName
------------------------------------------------

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T-SQL Mental Logic Block

May 21, 2006

SELECT src_terrier.Areacode, src_terrier.siteref, src_terrier.estatename, src_terrier.Securitised, src_terrier.unitref, src_terrier.unittype, src_terrier.unittype_count, src_terrier.tenantname, src_terrier.tenantstatus, src_terrier.tenantstatus_count, src_terrier.unitstatus, src_terrier.unitstatus_count, src_terrier.floortotal, src_terrier.floortotocc, src_terrier.initialvacarea, src_terrier.initialvacnet, src_terrier.TotalRent, src_terrier.NetRent, src_terrier.FinalRtLsincSC, src_terrier.ErvTot, src_terrier.tenancyterm, src_terrier.landact, src_terrier.datadate, src_div_mgr.div_mgr, src_portfolio_mgr.portfolio_mgr, src_centre_list.propcat

FROM src_terrier INNER JOIN src_centre_list ON src_terrier.siteref = src_centre_list.Site_Ref AND src_terrier.Areacode = src_centre_list.Division INNER JOIN src_div_mgr ON src_centre_list.Division = src_div_mgr.division INNER JOIN src_portfolio_mgr ON src_centre_list.Portfolio_no = src_portfolio_mgr.portfolio_no

WHERE (src_terrier.datadate = @dt_src_date) AND (@chr_div is null or src_terrier.Areacode = @chr_div) AND (@vch_portfolio_no is null or src_centre_list.Portfolio_no = @vch_portfolio_no) AND (@vch_prop_cat is null or src_centre_list.propcat = @vch_prop_cat)

How can I modify this function in two ways

1. I want the value of src_terrier.siteref to be matched to a different table src_tbl_budget.siteref. I want all rows in src_terrier.siteref and only the one row from the new table where the siteref is matched.

2. Also part of the new query, not only do I want it to match the siteref, I also want it to only match the mm/yyyy of the parameter entered (src_terrier.datadate = @dt_src_date) in the WHERE statement.

Is that any simpler?

Regards



Toni Chaffin
aka Toni


 

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Jul 9, 2007

I'm having a mental block here and would like to get things straight. All this while trying to learn and deploy SSB.



I belive my scenario is perfect for this solution. So I'm asking for your help. Simply I have the following process:

1. A record is inserted into a table.

2. Take this transaction and convert to XML file

3. Send XML version to web service where it is processed and the result is returned.

4. take the result and insert as into a different table (from the first).



My requirement to this process is that each step updates a status indicator in the original table. Second, since communication to the web service is not reliable, the message should retry until service is restored. Or failing that, after a timeout, should be in a state that can be restarted. And, lastly, the process sohuld be restartale in the event of failure.



I'm confident that the tasks and requirements are pretty simple and straighforward. But I'm not sure of the implementation.

1. Created initial record table.

2. Created SQL statement that converts single row to XML document

3. Created CLR Stored procedure that takes an XML and submits to Web Service and collects response.



So I think the question are;

1. Do I create two conversations? One for each direction of the message. ('to' the web svc and 'from' the web svc)

2. Do I create an intermediate table that feeds a queuefor the return message.

3. Where do I place the logic to update the Status flag? At the beginning of the next step? or the end of the executing step?

4. How do I ensure that a transaction is not lost from the time sent to the web service to the receipt of the response?





I'm using 'Pro SQL Server 2005' by Thomas Rizzo as a reference. Are there any better references? Most google responses seem to point to articles reiterating the base concepts. Would the 'Pro Sql 2005 Service Broker' book provide answers to my questions?

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Sep 25, 2007

Sorry for the akward title, not sure how to say this. I have a Person table and a addresses table. Each person may have many address records as shown below:

Person
-----------
PersonID | AutoNum
fName | varchar
lName | varchar
...etc

Addresses
---------------
addressID | AutoNum
personID | int (FK)
address1 | varchar
city | varchar
state | varchar
isPrimary | bit
...etc


What I'm trying to do is select all from Person and the city and state of each person's primary address. A little voice keeps saying subquery...but I can't figure it out. So far I have the SQL below, but if there is no address or no address where isPrimary = 1, it fails to return the person record. I need the person record regardless of if they have a primary address. Does that make sense?


Doesn't return all Person records:

SELECT Person.*, Address.City, Address.State
FROM Person LEFT OUTER JOIN Address
ON Person.PersonID = Address.PersonID
WHERE (Address.isPrimary= 1)
ORDER BY Person.lName, Person.fName

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Mar 12, 2007

Here is the situation i am stuck with, see the example first and below explained the problem:

-- 'SESSION A

create table foo (

id integer,

pid integer,

data varchar(10)

);

begin transaction

insert into foo values ( 1, 1, 'foo' )

insert into foo values ( 2, 1, 'bar' )

insert into foo values ( 3, 1, 'bozo' )

insert into foo values ( 4, 2, 'snafu' )

insert into foo values ( 5, 2, 'rimrom' )

insert into foo values ( 6, 2, 'blark' )

insert into foo values ( 7, 3, 'smeg' )

commit transaction

create index foo_id_idx on foo ( id )

create index foo_pid_idx on foo ( pid )

begin transaction

insert into foo values ( 9, 3, 'blamo' )

-- 'SESSION B

begin transaction

select id, data from foo with ( updlock, rowlock ) where id = 5;



-- Problem:

-- Uncommitted transaction in session A, with insert into table FOO, aquires lock on index foo_pid_idx which BLOCKS select with ( updlock, rowlock ) in session B.

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Rajesh.

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as
begin

[Code] ....

In the above script @i is declare in the if block only when the @pcntr value is 1. Assume the above stored procedure is called 5 times from this script

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go

As i said earlier `@i` variable exists only when `@pcntr` is `1`. Therefore when i call the stored procedure for the second time and so forth the control cannot enter the if block therefore @i variable wouldn't even exist. But the script prints the value in `@i` in each iteration, How comes this is possible should it throw an error saying `@i` variable does not exist when `@pcntr` values is greater than `1`?

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andrew, apples
bob, banana
bob, apples
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Rogue SQL below (from Site Server).

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Feb 11, 2004

I have created a SQL Agent job that is supposed to essentially duplicate a production database to another database. The code I am using is:

step1
__________________________________________________ ______
declare @sql varchar(8000)
set @sql=''
select @sql=@sql+'kill '+cast(spid as varchar)+char(13)+char(10)
from sysprocesses where dbid=12

--Print (@SQL)
exec(@sql)

step2
__________________________________________________ ________

RESTORE DATABASE HIWDYNARPT FROM PRDBACKUP
WITH REPLACE
__________________________________________________ ______

This works when I test it during the day, however when it runs at night I get the following error in the job log:

Database in use. The system administrator must have exclusive use of the database to run the restore operation. [SQLSTATE 42000] (Error 3101) Backup or restore operation terminating abnormally. [SQLSTATE 42000] (Error 3013). The step failed.

I'm not sure why this happens because I have killed all open threads in step 1, and then create my own new thread in step two. Maybe someone else is initiating a new thread to quickly between the steps???

Anyway, I am trying to use:
__________________________________________________ __
ALTER DATABASE HIWDYNARPT
RESTRICTED_USER
WITH ROLLBACK IMMEDIATE
__________________________________________________ ____

...as an alternative to the T-SQL killing PID's, but SQL 7.0 SP4 does not seem to support restricted user like 2000. It keeps giving me a syntax error. Does anyone have any suggestions?

If I bring step 1 and step 2 together, separated by "GO", could this fix the problem?

Thanks in advance!

Ryan Hunt

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I alread tried following:
use master
go
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So ran
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go
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Feb 21, 2000

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Feb 25, 2001

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May 31, 2008

Hi!

We're using a backup with sql server agent when doing a backup / restore
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fails:

Executed as user: DOMAINAdministrator. Exclusive access could not be
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RESTORE DATABASE is terminating abnormally. [SQLSTATE 42000] (Error 3013).
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Is it related to unhandled lock? I've resolved this by restarting the sql
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One more question. Is it OK to backup/restore database while there're users
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Apr 1, 2004

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May 12, 2008

Hi ,
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Select statements should have always shared lock.I am not getting why
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5/6/2008 12:38 spid4s Unknown Deadlock encountered €¦. Printing
deadlock information
5/6/2008 12:38 spid4s Unknown Wait-for graph
5/6/2008 12:38 spid4s Unknown Log Viewer could not read information
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5/6/2008 12:38 spid4s Unknown KEY: 9:72057594050117632 (8d036f07c58f)
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5/6/2008 12:38 spid4s Unknown Grant List 3:
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5/6/2008 12:38 spid4s Unknown Requested By:
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Value:0Γ—38baa20 Cost0/11888)
5/6/2008 12:38 spid4s Unknown Log Viewer could not read information
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5/6/2008 12:38 spid4s Unknown Wait List:
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May 5, 2008

Purpose
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Example
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Application Utilization
I€™m working on a system that has multiple threads that are each responsible managing data from the same normalized table. Each of these system threads work on the same unique record in parallel. Therefore it is possible that thread (0)€™s changes could be overwritten by thread (n)€™s. I would like to have each thread open the unique record exclusively and release it when finished. All of the other threads would loop until the record is released.

Questions

1. Is it possible to implement this at the server level?

2. What would be the easiest best practice for implementing this functional requirement?

Thanks,
Sean

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Sep 29, 2007

Hi All,

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Apr 11, 2007

Hi



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Jun 15, 2007

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Server: Msg 3101, Level 16, State 1, Line 1
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Hi all. I have read and implemented the very helpful threads on backing up and restoring with user instance posted with MFriedlander. Thank you. However, during the rs.SqlRestore(srv) command I am getting the following error "Restore failed for Server '\.pipe4A1F91FF-F6FE-45 sqlquery'. "
"Exclusive access could not be obtained because the database is in use."

I have implemented the changedatabase method as described in that thread.

SqlConnection.ChangeDatabase("master")

right before the line

rs.SqlRestore(srv)

I do not use the default instance of sql express, but I do use an instance called 'test' for my app. Should my changedatabase method also refer to my sql instance?

I am running from VS 2005 debug (F5) when it fails and cannot think of anything that would be locking it. Any help would be appreciated. Thank you. Below is the full code of the restore.

Robert



Dim sqlconnection As SqlConnection = New SqlConnection(My.Settings.dbTestConnectionString)

sqlconnection.Open()

MsgBox(sqlconnection.Database.ToString())

Dim ServerConnection As ServerConnection = New ServerConnection(sqlconnection)

Dim srv As Server = New Server(ServerConnection)

'Declare a BackupDeviceItem by supplying the backup device file name in the constructor, and the type of device is a file.

Dim bdi As BackupDeviceItem

bdi = New BackupDeviceItem(txtRestoreFile.Text, DeviceType.File)

''Define a Restore object variable.

Dim rs As New Restore

'Set the NoRecovery property to true, so the transactions are not recovered.

rs.NoRecovery = True

rs.ReplaceDatabase = True

'Add the device that contains the full database backup to the Restore object.

rs.Devices.Add(bdi)

'don't know why the below norecovery is changed to false

rs.NoRecovery = False

'Specify the database name.

rs.Database = sqlconnection.Database.ToString()

sqlconnection.ChangeDatabase("master")

'Restore the full database backup with no recovery.

rs.SqlRestore(srv)

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Hi everyone,



Hope somebody can help me on this.



I did a full BACKUP for two SQL databases using SQL Server Managament Studio. When trying to RESTORE the DBs, I get the following error:



"System.Data.SqlClient.SqlError: Exclusive access could not be obtained because the database is in use. (Microsoft.SqlServer.Smo)"



There are NO users using the application. These are DBs for the Portfolio Server 2007 application.



After exploring a little bit, I found that there are several "SLEEPING" processes with an "AWATING COMMAND" flag. The processes come from the Portfolio Server Application, maybe from previous sessions.



Can they be deleted? if so, would there be any serious consequences?



Thank you for your help on this.



Oscar E.

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