I need to determine the actual date/time that a message was placed on the queue. In my "activated" procedure I want to log this information and pass it along to further processing routines. From what I can tell, the Queue table itself does not have this information captured.
View 4 RepliesOk, im making some progress. So what i have is a Message Queue Task which is bound to a message queue connection manager (which 'tests' ok). The Message Queue Task is set to recieve, variable from string message (declared a variable of type string) and to remove the message from the queue. The output of that task is piped into the data flow task.
The data flow task expands into a XML Source which is configured to get its input from the string i declared in the Message Queue Task and i point the schemas path to an appropriate schema. I then pipe the output of that into a SQL server destination which ive mapped all the columns from the XML message to a table (which the SQL server destination created for me).
It all looks good on paper, and builds properly with no errors etc. There is already a message in the appropriate private queue. When i go to debug it, it just sits on the Message Queue Task node (its yellow) and goes no further. No data is put into the DB. I have put a watcher on the link between the XML Source and the SQL server destination, and can see no data being piped through.
Even if i send another message, the execution of my package doesnt step passed the Message Queue Task. Its just sitting there waiting for something? what? I thought it would block until there was a message on that queue, and then process it if and when it arrives. But it doesnt seem to do that.
Any ideas??
I read on MSDN that you need integration services installed. I have checked and i do, and its running. Is theres something else i need to configure?
Help!
Simple Question.
I have a requirement to read XML Messages from a Remote private MSMQ.
These messages are essentially Database records that will need cleaning up and insterting into a Local Database table.
Is this possible with SSIS?
Would Biztalk be a more suitable tool for this type of process?
If its possible, are there any resources taht can point me in the right direction?
Thanks for your help!
J.
I have a C# application that get data (i.e. select Firstname, LastName from person) to form a DataSet object (i.e. PersonName variable inside my code). Then I want to post this DataSet object into a local private queue (the path is: .privatemyTestQ). Note that I carefully labled the message to be "Variables Message" (as needed per anothre thread discussion here in this forum).
I created a receiving package, in which I want to use SSIS's Message Queue task to retreive the above DataSet object (from C# application). I got failure:
[Message Queue Task] Error: An error occurred with the following error message: "Root element is missing.".
However, As a comparison research, I created another SSIS sending-package. And I used ADO.NET provider to get the same data to store the sull result set in a package-level variable. Then I use Message Queue task to post this variable (i.e. object) to the same private queue above. Then I run my above receiving package. I was successful to read back the messge that I posted from SSIS sending package. (Please note that if I use OLEDB provider for sending package to get data from database, the MSMQ task for sending failed due to serializtion issue for __ComObject. With ADO.NET provider, the result set is represented as a type of DataSet).
I then curiously looked into message body from Computer Management Counsol. I found that message sent from SSIS is in SOAP format while message from my C# application is NOT in SOAP (but only in XML format). Obviously SSIS MSMQ task serialize objects into SOAP format.
Can anyone here please help on how to serialize my DataSet object from my C# app) in compliance with the MSMQ task's spec so that I can read message from Q using SSIS package.
I use Visual Studio 2005 and MSMQ 3.0 version.
Your help is appreciated.
Is it possible to modify the sequence of messages in a SSB queue? Or to create messages so that their sequence is based on a value in the message rather than the order in which they were sent to the queue?
I am trying to determine if SSB will help me solve a situation where BizTalk needs to process a prescribed sequence of messages that may not be received in the correct order. (i.e. I need to resequence the messages). Each message contains a field with the sequence number and also a field identifying the total number of messages in the sequence.
I realise that the Sequential Convoy Aggregrator EAI pattern can potentially provide a solution to this, or even the Sequence Guards pattern by McGeeky, but I guess I was hoping that SSB might provide a slightly more efficient solution(?)
Thanks,
Dan
Hi was wondering whether it is possible to log somewhere outside SB that there are messages in the transmission_queue because the Target queue was disabled.
I was testing this scenario:
try to send messages on a disabled queue and log the problem.
But the transmission_status from the trasmission_queue is always empty.
This is the code that I tried to execute between the send and the commit and after the commit:
WHILE (1=1)
BEGIN
BEGIN DIALOG CONVERSATION .....
SEND ON CONVERSATION ......
if select count(*) from sys.transmission_queue <> 0
BEGIN
set @transmission_status = (select transmission_status from sys.transmission_queue where conversation_handle=@dialog_handle);
if @transmission_status = ''
--Successful send - Exit the LOOP
BEGIN
UPDATE Mytable set isReceivedSuccessfully = 1 where ID = @IDMessageXML;
BREAK;
END
ELSE
raiserror(@transmission_status,1,1) with log;
END
ELSE
BEGIN
UPDATE [dbo].[tblDumpMsg] set isReceivedSuccessfully = 1 where ID = @IDMessageXML;
BREAK;
END
END
COMMIT TRANSACTION;
As I wrote before the @transmission_status variable is always empty and I have the same result even if I put the code after the commit transaction!
Maybe what I'm trying to reach has no sense?
With the event notification I can notify when the queue is disable because the receive rollsback 5 times but what if by mistake the target queue is disabled outside the SB environment? I can I catch it and handle it properly?
Thank you!Marina B
How To Use Message Queue Task In Integration Services
Hi Folks,
I've found a pretty good code example on http://www.dotnetfun.com for a Asynchronous Trigger.
I've parsed through the Code, to understand how to wirte my own Async Trigger with a Service Broker, but the Code isn't working! It seems that the stored procedure don't receive the messages in the queue, but the queue get's filled.
MessageType
CREATE MESSAGE TYPE myMsgXML
VALIDATION = WELL_FORMED_XML;
Contract
CREATE CONTRACT myContractANY
(myMsgXML SENT BY ANY)
Queue
CREATE QUEUE myQueue
WITH STATUS = ON,
RETENTION = ON,
ACTIVATION
(
STATUS = ON,
PROCEDURE_NAME = sp_myServiceProgram,
MAX_QUEUE_READERS = 5,
EXECUTE AS SELF
)
Service
CREATE SERVICE myService ON QUEUE myQueue (myContractANY)
Procedure (greped from http://www.dotnetfun.com/)
CREATE PROC sp_myServiceProgram
AS
-- This procedure will get triggered automatically
-- when a message arrives at the
-- Let's retrieve any messages sent to us here:
DECLARE @XML XML,
@MessageBody VARBINARY(MAX),
@MessageTypeName SYSNAME,
@ID INT,
@COL2 VARCHAR(MAX);
DECLARE @Queue TABLE (
MessageBody VARBINARY(MAX),
MessageTypeName SYSNAME);
WHILE (1 = 1)
BEGIN
WAITFOR (
RECEIVE message_body, message_type_name
FROM myQueue INTO @Queue
), TIMEOUT 5000;
-- If no messages exist, then break out of the loop:
IF NOT EXISTS(SELECT * FROM @Queue) BREAK;
DECLARE c_Test CURSOR FAST_FORWARD
FOR SELECT * FROM @Queue;
OPEN c_Test;
FETCH NEXT FROM c_Test
INTO @MessageBody, @MessageTypeName;
WHILE @@FETCH_STATUS = 0
BEGIN
-- Let's only deal with messages of Message Type
-- myMsgXML:
IF @MessageTypeName = 'myMsgXML'
BEGIN
SET @XML = CAST(@MessageBody AS XML);
-- Now let's save the XML records into the
-- historical table:
INSERT INTO tblDotNetFunTriggerTestHistory
SELECT tbl.rows.value('@ID', 'INT') AS ID,
tbl.rows.value('@COL2', 'VARCHAR(MAX)') AS COL2,
GETDATE() AS UPDATED
FROM @XML.nodes('/inserted') tbl(rows);
END
FETCH NEXT FROM c_Test
INTO @MessageBody, @MessageTypeName;
END
CLOSE c_Test;
DEALLOCATE c_Test;
-- Purge the temporary in-proc table:
DELETE FROM @Queue;
END
Send Message in a Update Trigger
SELECT @XML = (SELECT * FROM inserted FOR XML AUTO);
-- Send the XML records to the Service Broker queue:
DECLARE @DialogHandle UNIQUEIDENTIFIER,
@ConversationID UNIQUEIDENTIFIER;
/*
The target Service Broker service is the same
service as the initiating service; however, you
can set up this type of trigger to send messages
to a remote server or another database.
*/
BEGIN DIALOG CONVERSATION @DialogHandle
FROM SERVICE myService
TO SERVICE 'myService'
ON CONTRACT myContractANY;
SEND ON CONVERSATION @DialogHandle
MESSAGE TYPE myMsgXML
(@XML);
-- Let's detect an error state for this dialog
-- and rollback the entire transaction if one is
-- detected:
IF EXISTS(SELECT * FROM sys.conversation_endpoints
WHERE conversation_handle = @DialogHandle
AND state = 'ER')
RAISERROR('Dialog in error state.', 18, 127);
ELSE
BEGIN
--I want to list the queue after the trigger so I disabled
--END CONVERSATION @DialogHandle;
COMMIT TRAN;
END
The Problem is, that the Procedure doesn't even get started! So I tried to receive the Queues manually
WAITFOR (
RECEIVE message_body, message_type_name
FROM myQueue INTO @Queue
), TIMEOUT 5000;
and I run always into the timeout and get nothing back. A Select * FROM myQueue gives me some results back. Why I can't recevie?
Would be grateful for help, or at least a good tutorial, I haven't found one yet....
thx and greez
Karsten
I have a strange situation in an Message queue task in SSIS.
I serialize an object in a C# application and add that to an MSMQ as a string. I also ensure that I set the label to "String Message" so that my Message Queue Task can actually receive the message as a String message to variable.
I created an SSIS package that has an Message Queue listener that feeds into a Script task inside a for-each loop.
For each message that I obtain, I invoke a script task that retrieves the value of the variable and then processes this information.
When I enter the entry into the MSMQ, it goes in perfectly fine (since I also tested retrieving this entry from a C# app). However when I use the same logic on the SSIS package using the Script task, I get junk chinese characters.
Has this happened to anyone else?
Any feedback would be great!
Anup
Here is the code for the script task:
mports System
Imports System.Data
Imports System.Math
Imports Microsoft.SqlServer.Dts.Runtime
Public Class ScriptMain
Public Sub Main()
Dim statusMessage As String
statusMessage = CType(ReadVariable("ReviewerHealthXmlMessage"), String)
System.Windows.Forms.MessageBox.Show(statusMessage)
Dts.TaskResult = Dts.Results.Success
End Sub
Private Function ReadVariable(ByVal varName As String) As Object
Dim result As Object
Try
Dim vars As Variables
Dts.VariableDispenser.LockForRead(varName)
Dts.VariableDispenser.GetVariables(vars)
Try
result = vars(varName).Value
Catch ex As Exception
Throw ex
Finally
vars.Unlock()
End Try
Catch ex As Exception
Throw ex
End Try
Return result
End Function
Private Sub WriteVariable(ByVal varName As String, ByVal varValue As Object)
Try
Dim vars As Variables
Dts.VariableDispenser.LockForWrite(varName)
Dts.VariableDispenser.GetVariables(vars)
Try
vars(varName).Value = varValue
Catch ex As Exception
Throw ex
Finally
vars.Unlock()
End Try
Catch ex As Exception
Throw ex
End Try
End Sub
End Class
I am implementing a message queue system in SQL Server 2000. My queue table looks something like this:
[MessageId] [uniqueidentifier] NOT NULL,
[MessageType] [uniqueidentifier] NOT NULL,
[Status] [tinyint] NOT NULL,
[SubmittedTime] [datetime] NOT NULL,
[StartTime] [datetime] NOT NULL,
[DispatchedTime] [datetime] NULL,
[CompletedTime] [datetime] NULL,
[MessageData] [image] NULL
This is how I retrieve the next message for processing:
SELECT TOP 1 *
FROM [Queue].[MessageQueue] WITH (ROWLOCK, UPDLOCK, READPAST)
WHERE [StartTime]=@pStartTime AND [MessageType]=@pMessageType AND [Status]=@pStatus
ORDER BY [StartTime]
and mark it as being processed:
UPDATE [Queue].[MessageQueue] SET [Status]=1 WHERE [MessageId]=@pMessageId
After message has been processed I delete it from the queue:
DELETE FROM [Queue].[MessageQueue] WHERE [MessageId]=@pMessageId
All database accesses are transactional with default READ COMMITTED. The problems start when there are a few concurrent accesses: I get deadlocks when retrieving next message. If I do not delete message after processing then there is no deadlock. But this is not what I need.
I played with different isolation levels and locking hints and was able to avoid deadlock using TABLOCKX:
SELECT .... FROM [Queue].[MessageQueue] WITH (TABLOCKX)
But in this case you cannot concurrently retrieve messages which was my goal from the beginning. How do I achieve this?
Thank you,
Alex
Hello,
I'm using the Message Queuing task to create a local private queue message. Everything works great on a 32 bit machine. When I try this on a 64 bit Itanium Cluster I keep getting the message "Message queue service is not available" in my SSIS log. I've using this string as my path "ClusterNameprivate$QueueName". Does anyone know of any issues with the Message Queue task on 64 bit or a cluster? The Message Queue service is up and running, it doesn't make sense.
Thanks,
Andy
I'm trying to use the message queue task in SSIS 2005 and not getting very far. Right off the bat I'm trying to create a Message Queue Connection Manager and when I enter the path, trying both "seawxxxx estq" (my local computer name) or ". estq" and test it, it comes back with "invalid path". Have done quite a bit of searching around and can't find anything on this particular error.
Suggestions? Thanks in advance.
Hi,
I am using distributed transactions where in I start a TransactionScope in BLL and receive data from service broker queue in DAL, perform various actions in BLL and DAL and if everything is ok call TransactionScope.Commit().
I have a problem where in if i run multiple instances of the same app ( each app creates one thread ), the threads pop out the same message and I get a deadlock upon commit.
My dequeue SP is as follows:
CREATE PROC [dbo].[queue_dequeue]
@entryId int OUTPUT
AS
BEGIN
DECLARE @conversationHandle UNIQUEIDENTIFIER;
DECLARE @messageTypeName SYSNAME;
DECLARE @conversationGroupId UNIQUEIDENTIFIER;
GET CONVERSATION GROUP @conversationGroupId FROM ProcessingQueue;
if (@conversationGroupId is not null)
BEGIN
RECEIVE TOP(1) @entryId = CONVERT(INT, [message_body]), @conversationHandle = [conversation_handle], @messageTypeName = [message_type_name] FROM ProcessingQueue WHERE conversation_group_id=@conversationGroupId
END
if @messageTypeName in
(
'http://schemas.microsoft.com/SQL/ServiceBroker/EndDialog',
'http://schemas.microsoft.com/SQL/ServiceBroker/Error'
)
begin
end conversation @conversationHandle;
end
END
Can anyone explain to me why the threads are able to pop the same message ? I thought service broker made sure this cannot happen?
Hello,
I have almost finished to design my Service Broker application and I found out something strange.
I was tring to handle the Target queue disabled scenario, because I want to save to message that was not sent so I can create an alert to the user to say that some messages as not been sent.
To disable to queue I run:
Alter queue [dbo].[Receivedqueue] with status = off
I had the Event Viewer in front of me and I have seen the suddenly it appeared a lot of this informational events:
Event Type: Information
Event Source: MSSQLSERVER
Event Category: (2)
Event ID: 9724
Date: 15/06/2007
Time: 15:00:47
Description:
The activated proc [dbo].[OnReceived] running on queue TestReceiver.dbo.Receivedqueue output the following: 'The current transaction cannot be committed and cannot support operations that write to the log file. Roll back the transaction.'
For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
What this message means?
I would like to avoid to have it because it appears a lot of time and I don't want to fill up my Event Viewer!!
I don't know of it is important but in the moment I executed the code there was not CONVERSING conversation and all the queues were empty.
Somebody has seen this error before or I have to send to the forum the [dbo].[OnReceived] code as well?
thankx
Marina B.
This is the first time I've used SQL Server Integration Services, and I have it installed with SP2 applied on my local machine. I have created a Package, and dropped a Message Queue Task on it. I have pointed the Message Queue Connection Manager at a private queue on my machine. I have set the "Message" property to "Send message", I have changed the message type to "String Message" and entered "Test string" into the StringMessage property. When I execute the package (by clicking the "Start debugging" button on the toolbar), I get the following error message in the Execution Results:
[Message Queue Task] Error: An error occurred with the following error message: "The ServicedComponent being invoked is not correctly configured (Use regsvcs to re-register).".
There is no more diagnostic data that I can see in the Execution Results. Can anyone please explain to me how I can get this working?
Thanks!
Bryan
Hello!
In running some performance tests on a Queue using a message size of ~5KB, we found that we can process (SEND and RECEIVE) on the order of 600 - 800 messages / second. However, we have found that INSERTs of new messages to the Queue appear to take great precedence over DELETEs of received messages from the queue. In particular, we found that during heavy use the total size of the Queue (as determined using the sp_spaceused procedure) equals about the number of total messages processed, not the number of messages on the queue.
When we stop sending messages, the overall size of the Queue table appears to decrease slowly, so there is a background process that is obviously doing some work there to clean up the received messages from the Queue. What I would like to know is if we can affect that background process in any way so that the messages are cleared out more quickly. The performance has been determined to suffer appreciably once the Queue size grows to greater than about 3GB in size. We also notice timeouts on the RECEIVE statements when the Queue size is that large.
Thanks for any help --
Robert
Hello -I am trying to determine the last time a SP was executed. Does anyoneknow how to do this? I'm trying to cleanup some databases.Thanks!*** Sent via Developersdex http://www.developersdex.com ***Don't just participate in USENET...get rewarded for it!
View 3 Replies View Related
Hi, I'm sorry if this is the wrong place to ask this question. These forums are overwhelming and I couldn't find the appropriate place to post.
I am wondering if there is some way to determine when a query has completed. What I want to do is use a PleaseWaitButton in asp.net when the user clicks to run a query and have the button reactivate after the query has completed. I know how to set a specific wait time but I do not want the user to have to wait a default time for the query to complete. Any help you may provide would be greatly appreciated.
Thanks!
This is driving me nuts..
I'm trying to extract some data from a table in oracle. The oracle table stores date and time seperately in 2 different columns. I need to merge these two columns and import to sql server database.
I'm struggling with this for a quite a while and I'm not able to get it working.
I tried the oracle query something like this,
SELECT
(TO_CHAR(ASOFDATE,'YYYYMMDD')||' '||TO_CHAR(ASOFTIME,'HH24:MM : SS')||':000') AS ASOFDATE
FROM TBLA
this gives me an output of 20070511 23:06:30:000
the space in MM : SS is intentional here, since without that space it appread as smiley
I'm trying to map this to datetime field in sql server 2005. It keeps failing with this error
The value could not be converted because of a potential loss of data
I'm struck with error for hours now. Any pointers would be helpful.
Thanks
I have a table of machine data that captures fault codes, time machine stopped and time machine started. I can easily calculate the downtime, but how do i take the last start time and subtract it from the next stop time (1 row from the next row) to get an up time. I need it to group by short date and fault as I intend to use Excel as a reporting tool and pulling in all data will not fit. What is the most efficient way?
Thanks,
Lee
I am trying to figure out how to calculate the average time between phone calls for a user. The initial requirement is to calcualte this on all calls for an entire month but I would guess that would lead to other periods as well, such as daily, weekly, etc. One hurdle is what to do when going from one day to the next. I could possibly just week out any times between calls that are greater than a certain amount of time to address that.
Any way, here is a small sample of what I'll be dealing with. Any ideas on how to approach this or get it to work would be greatly appreciated.
Code Block
CREATE TABLE #avetime (origdate datetime, duration_seconds int, duration_minutes decimal(9,2), phoneuser varchar(20), calltype varchar(15))
INSERT into #avetime VALUES ('Jan 7 2008 9:19AM', 21, 0.4, 'Coleman', 'Long Distance')
INSERT into #avetime VALUES ('Jan 7 2008 9:19AM', 48, 0.8, 'Coleman', 'Long Distance')
INSERT into #avetime VALUES ('Jan 7 2008 9:33AM', 81, 1.4, 'Coleman', 'Long Distance')
INSERT into #avetime VALUES ('Jan 7 2008 9:35AM', 87, 1.5, 'Coleman', 'Internal')
INSERT into #avetime VALUES ('Jan 7 2008 9:37AM', 27, 0.5, 'Coleman', 'Internal')
INSERT into #avetime VALUES ('Jan 7 2008 9:42AM', 13, 0.2, 'Coleman', 'Long Distance')
INSERT into #avetime VALUES ('Jan 7 2008 9:43AM', 84, 1.6, 'Coleman', 'Long Distance')
INSERT into #avetime VALUES ('Jan 7 2008 12:00PM', 914, 15.2, 'Coleman', 'Long Distance')
INSERT into #avetime VALUES ('Jan 7 2008 2:24PM', 3, 0.1, 'Coleman', 'Internal')
INSERT into #avetime VALUES ('Jan 8 2008 10:13AM', 21, 0.4, 'Coleman', 'Long Distance')
INSERT into #avetime VALUES ('Jan 8 2008 10:33AM', 482, 8.0, 'Coleman', 'Long Distance')
INSERT into #avetime VALUES ('Jan 8 2008 11:49AM', 56, 0.9, 'Coleman', 'Long Distance')
I'm looking for a way of taking a query which returns a set of date time fields (probable maximum of 20 rows) and looping through each value to see if it exists in a separate table.
E.g.
Query 1
Select ID, Person, ProposedEvent, DayField, TimeField
from MyOptions
where person = 'me'
Table
Select Person, ExistingEvent, DayField, TimeField
from MyTimetable
where person ='me'
Loop through Query 1 and if it finds ANY matching Dayfield AND Timefield in Query/Table 2, return the ProposedEvent (just as a message, the loop could stop there), if no match a message saying all is fine can proceed to process form blah blah.
I'm essentially wanting somebody to select a bunch of events in a form, query 1 then finds all the days and times those events happen and check that none of them exist in the MyTimetable table.
Hi There
I am trying to establish the date a database was last used.
At first i checked out sp_helpfile and sysfiles to see if there was a date last modified, i also tried using xp_cmdshell to check the date on the actual .mdf or .ldf on the o/s but if the file has not grown the date will be the create date.
I need to establish the date a database was last used, either the last time someone logged into it or the last time any sort of command was run against the database, i cannot use sysprocesses as there are no connections to the database, so i need to determine the last time there actually were any processes run against this database.
And i need to use tsql, checking audit logs etc is not viable, can anyone help ?
Thanx
I have a table that contains the SKU and a period of time the SKU was available to purchase (StartDtKey and EndDtKey). I am trying to write a query determine which skus were available during a given date range. The DtKeys correspond to a date in our calendar table and are in order. So DtKey 5 is 4 days after DtKey 1.
Code:
CREATE TABLE #SKU(
[SKU] varchar(10) NULL,
[StartDtKey] int NULL,
[EndDtKey] int NULL);
INSERT INTO #SKU VALUES ('Sku1',1,9)
,('Sku2',2,6)
,('Sku3',10,20)
,('Sku4',5,9)
,('Sku5',25,30)
Example:
Which SKUs were available on at least one day between DtKey 7 and DtKey 9?
Answer:
Sku1, Sku4
This is the logic I need to incorporate in to sql
if the getdate() < term start date then R
if the getdate() > term date date and getdate() < term end date then C
if the getdate() > term end date then H
I have come up with the following type of case statement that will allow me to determine the first two values (to a degree), however , I need to evaluate the end date as well.
Is there a way to look at multiple columns in a case statement?
CASE
WHEN DATEDIFF(DD,GETDATE(),TRM_BEGIN_DTE) >0 THEN 'R' else 'C' end
Hi All,I have to a few backups restored from a set of backup files. Thebackup files have been removed from the drive because of some storageconstrains...For some data comparison reasons, I need to figure out the actual dateof these backup files that is used to restore these databases. Isthere any system table I can query to figure the actual backup timesof these databases...Any help will be much appreciated.. Thanks in advance.- Aravin
View 1 Replies View RelatedIs it possible to determine an index create date in SQL Server 2008 R2? The index in question is not a primary key.
View 8 Replies View RelatedDECLARE @varDate datetimeDECLARE @varMonthDate datetimeDECLARE @varYear datetimeDECLARE @varFOM varchar(10)DECLARE @NumDaysInMonth as intselect @varDate = '2/1/2004'select @varMonthDate = MONTH(@varDate)select @varYear = YEAR(@varDate)select @varFOM = CAST(CAST(@varMonthDate as int) as varchar) + '/1/' +CAST(CAST(@varYear as int) as varchar)select @NumDaysInMonth = DATEDIFF (day,@varFOM,DATEADD(mm,1,@varFOM))select @NumDaysInMonth as DaysInMonth
View 1 Replies View RelatedGiven the data below, I have a couple needs:
1) Query to determine if any date ranges overlap (regardless of category, e.g., row ids 6 & 7 below)
2) Query to determine if any date ranges of the same category overlap
declare @t1 table (id int primary key, category int, start_date datetime, end_date datetime)
insert @t1 select 1, 1, '1/1/2015 12:00:00 AM', '1/15/2015 12:59:59 PM'
insert @t1 select 2, 1, '1/16/2015 12:00:00 AM', '1/31/2015 12:59:59 PM'
insert @t1 select 3, 1, '2/1/2015 12:00:00 AM', '2/15/2015 12:59:59 PM'
insert @t1 select 4, 1, '2/16/2015 12:00:00 AM', '2/28/2015 12:59:59 PM'
insert @t1 select 5, 1, '3/1/2015 12:00:00 AM', '3/15/2015 12:59:59 PM'
[code]....
Hello,
This is info that I am still not certain about and I just need to make sure, my gut feeling is correct:
A.
When a procedure is triggered upon reception of a message in a queue, what happens when the procedure fails and rolls back?
1. Message is left on the Queue.
2. is the worker procedure triggered again for the same message by the queue?
3. I am hoping the Queue keeps on triggering workers until it is empty.
My scenario is that my queue reader procedure only reads one message at a time, thus I do not loop to receive many messages.
B.
For my scenario messages are independent and ordering does not matter.
Thus I want to ensure my Queue reader procedures execute simultaneously. Is reading the Top message in one reader somehow blocking the queue for any other reader procedures? I.e. if I have BEGIN TRANSACTION when reading messages of the Queue, is that effectively going prevent many reader procedures working simultaneously. Again, I want to ensure that Service broker is effectively spawning procedures that work simultaneously.
Thank you very much for the time,
Lubomir
I am trying to load previous days data at 3 am via a SSIS job.
The Date variable is initiated as DATEADD("dd",-1, GETDATE()) in the for loop.
Now, as this job runs at 3 am, and I set the variable as GETDATE() - 1, it excluded the data from 12 am to 3 am in the resultset as Date is set as YYYY-MM-DD 03:00:00:000 I need this to be set as YYYY-MM-DD 00:00:00:000
How can i do this?
Hi There
I have issues around forwarding message being dropped because they exceed the forwarding message time to live.
I cannot find anything in BOL or the net regarding changing the message time to live value to be higher, does anyone know where i change this setting ?
Thanx
In SQL Server 2000:
How do I convert a Julian date to a Gregorian date?
How do I convert a Gregorian date to Julian?
Examples please.
Many thanks in advance.
Gary Andrews