I want to write sql query which runs in a background on cyclic basis. Basically i want to count the row entries of 1 table and store the data and the count in two distinct columns.
View 3 RepliesI have query on grouping data on weekly basis..
1. Week should start from Monday to Sunday
2. It should not consider current week data(suppose user clicks on report on Tuesday, it should display the data for last week).
3. I want output like below
Week1,week2,week3..... week12,AverageofWeek
12 , 10 ,0.........0 12
Hi
I wrote a simple sql query to get the shortest path length from node 1 to all the other nodes. Since there's a loop in the graph, I want to prevent it from going back to some nodes it has expanded before.
I got the following error:
Msg 253, Level 16, State 1, Line 2
Recursive member of a common table expression 'CTE_Sample' has multiple recursive references.
It is referring to "and Table1.t NOT IN (select fr from CTE_Sample)"
Can somebody help me to solve it?
btw. How to use the UNION, EXCEPT or INTERSECT operators when doing the recursive join? It seems I must use UNION ALL.
Thanks!
drop table Table1
CREATE TABLE Table1 ( fr int, t int)
INSERT Table1 VALUES (1, 2)
INSERT Table1 VALUES (2, 3)
INSERT Table1 VALUES (3, 4)
INSERT Table1 VALUES (1, 3)
INSERT Table1 VALUES (1, 4)
INSERT Table1 VALUES (4, 5)
INSERT Table1 VALUES (4, 2)
GO
WITH CTE_Sample (fr, t, level) AS
(
SELECT Table1.fr, Table1.t, 1 AS level
FROM Table1
WHERE fr=1
UNION ALL
SELECT Table1.fr, Table1.t, level+1
FROM Table1
INNER JOIN CTE_Sample ON Table1.fr = CTE_Sample.t
and Table1.t NOT IN (select fr from CTE_Sample)
)
SELECT CTE_Sample.t, min(CTE_Sample.level)
FROM CTE_Sample
group by CTE_Sample.t
Performance issue.
I have a very complex Stored Procedure called by a Job that is Scheduled to run every night.
It's execution takes sometimes 1 or 2 hours and sometimes 7 hours or more.
So, if it is running for more than 4 hours I stop the Job and I run the procedure from a Query Window and it never takes more than 2 hours.
Can anyone help me identify the problem ? I want to run from the Job and not to worry about it.
Some more information:
- It is SQL 2000 Enterprise with SP4 in a Cluster (It happens the same way in any node).
- The SQL Server and SQL Agent services run using a Domain Account that have full Administrative access.
- When I connect to a Query Window I also use a Windows Account.
- There is no locks or process bloking or being blocked while the job is running.
- Using the Task Manager the processor activity is ok, no more than 30 % in any processor.
I want to write a query to generate a report. I have a date column which will be holding all the business dates. No dates of Saturday and Sunday are allowed. What I am looking for is, I want to get the result of every 5th business day of each month. A month could start with any day. I just want only the 5th business day.
View 9 Replies View RelatedWhat I really need is to find the entries that have the word LVAD but on either side there should be a space chartacters.In other words I don't want to see the following coming from the query "SILVADENE ([PHI] SULFADIAZINE)"How can we write this query to search only for any entry that has the word " LVAD " ?
Select top 100 * FROM tbl_abc
where
AIMS_Value like '%LVAD%'
I need to get results on quarterly basis, matching 2 quarters AUTOMATICALLY.
- As the new quarter starts, it needs to match the last quarter results.
SELECT DATEADD(mm, (QUARTER - 1) * 3, year_date) StartDate,
DATEADD(dd, -1, DATEADD(mm, QUARTER * 3, year_date)) EndDate,
QUARTER QuarterNo
[Code] ....
Here is my Query, I don't know whether I'm getting it right?
--Quarter 1
SELECTD.MerchantName, A.MID, A.TID, ISNULL(SUM(A.SumTrxnMon), 0) AS SumTrxnMon, E.FullName, E.DxBEmail
INTO#Quarter1
FROMdbo.tblRPT_Spend AS A INNER JOIN
dbo.tblMer_DeployORetrieveTerm AS B ON A.MID = B.MID AND A.TID = B.TID INNER JOIN
[Code] ....
I have create Store procedure for all the Source and destination table for loading new and updated record.
For example I have below Store procedure
1-SP_Archive_using_merge_Fdoor
2-SP_Archive_using_merge_Fdoop
now I want to call all the sp on the basis of input like If filename is Fdoor then it shold fire the SP_Archive_using_merge_Fdoor , if file name is Fdoop then it shoilud fire the SP_Archive_using_merge_Fdoop like that .
below is the 2 sp .
--First SP
ALTER PROCEDURE [dbo].[SP_Archive_using_merge_Fdoor]
AS
BEGIN
SET NOCOUNT ON
DECLARE @Source_RowCount int
DECLARE @New_RowCount int
[code].....
I have to write a Stired Procedure with the following functionality.
Write a simple select query say (Select * from tableA) result is
ProdName ProdID
----------------------
ProdA 1
ProdB 2
ProdC 3
ProdD 4
Now with the above result, On every record I have to fire a query Select SUM(sale), SUM(scrap), SUM(Production) from tableB where ProdID= ["ProdID from above query"].How to write this query in a Stored Procedure so that I can get the required SUM columns for all the ProdID's from first query?
Basically I'm running a number of selects, using unions to write out each select query as a distinct line in the output. Each line needs to be multiplied by -1 in order to create an offset balance (yes this is balance sheet related stuff) for each line. Each select will have a different piece of criteria.
Although I have it working, I'm thinking there's a much better or cleaner way to do it (I use the word better loosely)
Example:
SELECT 'Asset', 'House', TotalPrice * -1
FROM Accounts
WHERE AvgAmount > 0
UNION
SELECT 'Balance', 'Cover', TotalPrice
FROM Accounts
WHERE AvgAmount > 0
What gets messy here is having to write a similar set of queries where the amount is < 0 or = 0
I'm thinking something along the lines of building a table function contains all the descriptive text returning the relative values based on the AvgAmount I pass to it.
I have to calculate the Total number of days present and absent for a singel student.
AS of now i have 3 tables.
1.Daily attendance - Columns -[Guid][,AcademyId],[StudentId],[Date],[Status],[Reason]
2.Student details - Columns - [Guid],[FullName],[DOB],[Address]
3.Class Details - Columns - [Guid],[AcademyId],[Class],[Section],[Startdate],Enddate]
So now i have loaded all the data into the table.
I can fetch the counts for total present and absent
Query i have tried is
Declare
@StudentId Uniqueidentifier ='0B2D4D41-8D33-4D79-A981-03E0F093F458'
Begin
select A.StudentId ,A.Date,Count(Date)Total,B.Guid,
[Code] ....
AS result of this query i get the data.Present count and Absent count from date inserted in Dailyattendance tables.
SO my problem is if the student have promoted to next class then by this query it will count the before year also how do i need to calculate the count according to the Class StartDate and Enddate as i mention in the Class Details table what will be the query.
I have a SSRS report developed in SQL 2012. When I exporting the report into word the back ground colour of page header missing. When Exporting to PDF and Excel page header BG colour showing.
View 0 Replies View RelatedOn a webpage, there are filters to choose from. Like date, amount, SSN (multiple filters can be choosen).I have a single query so far. SqlCommand cmd = new SqlCommand("SELECT [column1], [column2], [column3], [column4], [column5] FROM [table] WHERE [column4] = 'condition4' AND [column5] = @total_bill AND [last_change] >= @txtStartDate AND [last_change] <= @txtEndDate ", Conn) ; cmd.Parameters.Add(new SqlParameter("@total_bill", total_bill1.Text)); cmd.Parameters.Add(new SqlParameter("@txtStartDate", txtStartDate.Text)); cmd.Parameters.Add(new SqlParameter("@txtEndDate", txtEndDate.Text)); I want to break the query so that it executes on the basis of different sets of conditions (filters). If I dont select date filter, then the above query will not execute properly.Please help.
View 2 Replies View RelatedWe are using SSRS 2012. We have a report that conditionally formats a background color for some cells. The report renders properly in a browser and in Excel 2003 format. In Excel format all cells after the first one that meets the condition are highlighted, even if only one cell should.
The sample expression that triggers this condition looks like this:
=IIF(Fields!VIOL_NOTE.Value="Internal","Green","No Color")
All cells after the first one that meets the condition Fields!VIOL_NOTE.Value="Internal" have a green background.
Excel 2003 (proper) results:
Excel (improper) results:
Every night all our DBCC CHECKDB runs on all our databases. The trouble is one of them is very large and the database is inaccessible whilst this runs. DBCC CHECKDB (dbname) WITH physical_only executed by user found 0 errors and repaired 0 errors. Elapsed time: 0 hours 24 minutes 46 seconds
This normally happens fairly shortly after the backup, and normally (but not always) after a series of these entries in the log.SQL Server has encountered 7976 occurrence(s) of I/O requests taking longer than 15 seconds to complete on file [D:Program FilesMicrosoft SQL ServerMSSQL11. MSSQLSERVERMSSQ LDATA empdb.mdf] in database [tempdb] (2).Would this cause SQL to automatically run a CheckDB.
I'm running a query, actually its an insert that works when using the TSQL below.
However when I try to use the debugger to step through and using the exact same values as those below I get the following error:
[Microsoft][ODBC SQL Server Driver]Invalid character value for cast specification
Its Killing me because everything else works, but this. Can somebody help.
DECLARE @NoteID INT,-- NULL OUTPUT,
@Note_Description NVARCHAR(3000),-- = NULL,
@Date DateTime,-- = NULL OUTPUT,
@ByWho NVARCHAR(30),-- = NULL,
@FK_Action_Performed NVARCHAR(40),-- = NULL,
@FK_UserID INT,-- = NULL,
@FK_JobID INT,-- = NULL,
@Job_Date DateTime,-- = NULL,
@Start DateTime,-- = NULL,
@Finish DateTime,-- = NULL,
@BeenRead NVARCHAR(10),-- = NULL
@FK_UserIDList NVARCHAR(4000)-- = NULL
--SET @NoteID = 409 --NULL OUTPUT,
SET @Note_Description = 'Tetsing'
--SET @Date DateTime = NULL OUTPUT,
SET @ByWho = 'GeorgeAgaian'
SET @FK_Action_Performed = 'Worked hard'
SET @FK_UserID = 5
SET @FK_JobID = 29
SET @Job_Date = 28/01/03
SET @Start = '1:00:20 PM'
SET @Finish = '1:00:20 PM'
SET @BeenRead = 'UnRead'
SET @FK_UserIDList = '1,2,3'
--AS
--SET NOCOUNT ON
SET NOCOUNT ON
SET XACT_ABORT ON
BEGIN TRANSACTION
SET @Date = GETDATE()
-- Insert Values into the customer table
INSERT Note (Note_Description,
Date,
ByWho,
FK_Action_Performed,
FK_UserID,
FK_JobID,
Job_Date,
Start,
Finish)
SELECT --@NoteID,
@Note_Description,
@Date,
@ByWho,
@FK_Action_Performed,
@FK_UserID,
@FK_JobID,
@Job_Date,
@Start,
@Finish
-- Get the new Customer Identifier, return as OUTPUT param
SELECT @NoteID = @@IDENTITY
-- Insert new notes for all the users that the note pertains to, in this case this will be by the assigned
-- users.
IF @FK_UserIDList IS NOT NULL
EXECUTE spInsertNotesByAssignedUsers @NoteID, @FK_UserIDList
-- Insert New Address record
-- Retrieve Address reference into @AddressId
-- EXEC spInsertForUserNote
-- @FK_UserID,
--@NoteID,
-- @BeenRead
-- @Fax,
-- @PKId,
-- @AddressId OUTPUT
COMMIT TRANSACTION
--------------------------------------------------
GO
I was trying to modify a table and I got a "data error: cyclic redundancy check"
So I ran a DBCC CHECKDB and got this:
Server: Msg 823, Level 24, State 1, Line 3
I/O error 23(Data error (cyclic redundancy check)) detected during read of BUF pointer = 0x11c902c0, page ptr = 0x14d66000, pageid = (0x1:0x3d), dbid = 26, status = 0x801, file = d:MSSQL7datacontent_Data.MDF.
Connection Broken
This is scary stuff! What does it mean and how do I fix it?
I am able to run a query which runs FAst in QA but slow in theapplication.It takes about 16 m in QA but 1000 ms on theApplication.What I wanted to know is why would the query take a longtime in the application when it runs fast on SQL server?How should we try debugging it?Ajay
View 2 Replies View RelatedWhen i run it from sql server data tools on the test box it runs fine. However when i run it from the ssisdb directly i get the below error.
reload table tablename1 from Excel file:Error: The "filetoload.Outputs[Excel Source Output].Columns[Product]" failed because truncation occurred, and the truncation row disposition on "filetoload.Outputs[Excel Source Output].Columns[Product]" specifies failure on truncation. A truncation error occurred on the specified object of the specified component.
reload table t from Excel file:Error: There was an error with filetoload.Outputs[Excel Source Output].Columns[Product] on filetoload.Outputs[Excel Source Output]. The column status returned was: "Text was truncated or one or more characters had no match in the target code page.".
THis is so annoying. I have 3 ADO executes in my program. THe first one creates a view, the second one performs an outer join on that view and returns a result set, the third execute drops the aforementioned view. THe program that is using this is installed on about 200 computers scattered across Germany and Italy, all querying the same MSsql server 7.0. THe queries run quite quick when few users are actively using the program (after hours for example). however in the heat of the day performance goes up and down dramatically with identical queries taking from 1 to 20 seconds to return their result set. Now I initially thought 'bandwidth issue out of our server'. However I noticed that if I take those three queries and run them from the sql server enterprise manager( running on the same computer as the aforementioned program) then the queries run instantly and the data is in my result pane in less than 2 seconds ALWAYS....even when the program is dogging it with 20 second delays before the result set returns. I know it is hanging on the return of the result set as I put a stop after before each ADO execute in order to check which one was eating up my time. Why is there this dichotomy between running the queries from my enterprise manager versus running them from an ADO object. Both are using TCP/IP (no named pipes involved). I havent monkied with the attributes of the ADO result set so they are all set to default.
I have used the sql server profiler to trace these queries and they always run in less than 33 milliseconds. THe duration is also never more than 33 milliseconds. THis stinks of a network resource issue but what always leads me somewhere else is how consistent the performance of the enterprise manager is when it runs the exact same three queries.
Here is my slightly edited connection string
Public Const connection_string = "Provider=SQLOLEDB;Server=000.000.000.000;" & _
"User ID=johndoe;Password=janedoe;Network=dbmssocn;" & _
"database=fidojoe"
Here are the 3 ADO executes:
conn.Execute (sqlstr_create_view)
Set resultset1 = conn.Execute(sqlstr_get_providers_by_DMISID)
conn.Execute (sqlstr_drop_view)
Hi Guys,
I've got a stored proc used for order generation which runs long sometimes when called from within our app. A normal run will complete within 20s, a long run will get terminated by the app at the 6 minute mark.
When it runs long once, repeated attempts will also do so until I execute the same query the app did, but from within Query Analyzer. At which time the problem will disappear for a day or two. The app connects to the SQL Server 200 SP4 database using ADO.
I suspected statistics might be at fault here but have tried both "UPDATE STATISTICS table WITH FULLSCAN" and "DBCC DBREINDEX('table') to no avail. This issue has occurred and been worked around in this manner a few dozen times.
Any idea what might be going on here?
Here a code for finding all minimal loops (cyclic paths) in a graph
with vertexes of degree >= 3. Almost obviously that before seeking
for loops we should eliminate from the graph all its vertexes of degree < 3
(degree of a vertex is the number of edges outcoming from the vertex).
Note: there are no any 'parent' - 'child' nodes here. All vertexes are
absolutely equitable.
if object_id('g3')>0 drop table g3
if object_id('g3x')>0 drop table g3x
if object_id('g3y')>0 drop table g3y
if object_id('g3l')>0 drop table g3l
GO
create table g3y(v1 int, v2 int) -- ancillary table
GO
create table g3x(n int, v1 int, v2 int) -- ancillary table
GO
create table g3l(nl int, v1 int, v2 int)
-- table for storing of 'detected' loops
GO
create table g3(v1 int, v2 int)
-- table of test data with pairs of adjoining vertexes
-- each vertex is named by an arbitrary number
GO
insert into g3
select 2, 3 union all
select 2, 4 union all
select 1, 4 union all
select 3, 5 union all
select 5, 6 union all
select 1, 6 union all
select 4, 7 union all
select 6, 8 union all
select 3, 9 union all
select 1, 7 union all
select 2, 7 union all
select 1, 8 union all
select 5, 8 union all
select 2, 9 union all
select 5, 9 ----union all
/*
select 2, 13 union all
select 3, 13 union all
select 13, 14 union all
select 12, 14 union all
select 12, 15 union all
select 11, 15 union all
select 11, 13 union all
select 10, 11 union all
select 10, 12 union all
select 10, 14 union all
select 10, 15
*/
GO
insert into g3 select v2, v1 from g3
declare @i int, @n int, @v1 int, @v2 int
set @i=1
while 0=0
begin
set @n=1
truncate table g3x truncate table g3y
select top 1 @v1=g3.v1, @v2=g3.v2 from g3 left join g3l on
(g3.v1=g3l.v1 and g3.v2=g3l.v2)or(g3.v1=g3l.v2 and g3.v2=g3l.v1)
where g3l.nl is null if @@rowcount=0 break
insert into g3x select @n, @v1, @v2
while @v1<>(select top 1 v2 from g3x order by n desc)
begin
set @n=@n+1
insert into g3x select top 1 @n, v1, v2 from g3 where v2=@v1
and v1<>@v2 and v1=(select top 1 v2 from g3x order by n desc)
if @@rowcount=0
begin
insert into g3x select top 1 @n, v1, v2 from g3 where
v2 not in (select v1 from g3x union all select v2 from g3x) and
v1=(select top 1 v2 from g3x order by n desc) and not exists
(select 0 from g3y where g3y.v1=g3.v1 and g3y.v2=g3.v2)
if @@rowcount=0
if @n>2
begin
insert into g3y select v1, v2 from g3x where n=@n-1
delete from g3x where n=@n-1
set @n=@n-2
end
else
begin insert into g3l select 0, v1, v2 from g3x break end
end
else
begin
insert into g3l select @i, v1, v2 from g3x set @i=@i+1
end
end
end
select * from g3l order by nl
Below is what we get:
nl v1 v2
----------- ----------- -----------
1 2 3
1 3 5
1 5 6
1 6 8
1 8 1
1 1 4
1 4 2
2 1 6
2 6 8
2 8 1
3 4 7
3 7 1
3 1 4
4 3 9
4 9 2
4 2 3
5 2 7
5 7 4
5 4 2
6 5 8
6 8 6
6 6 5
7 5 9
7 9 3
7 3 5
Of course, in general case not all found by the code loops are minimal.
But this is exactly my approach:
firstly find any possible loops (avoiding excessiveness!!),
then, in WHILE loop, try to mark out minimal loop(s) from intersection of
two non-minimal loops... seems it will be an interesting t-sql job.
Good afternoon,
i'm new to Functions on the SQL server
I'm trying to create a dynamic query that would select the the column passed to the function from a certain table
my table called selected_Date, and has StartDate, and EndDate columns
when the user select for example "StartDate", i pass this as a variable to the function which runs the query. but i always gets back the passed string as a result..
here is my table
StartDate | EndDate
---------------------
20071231 | 20080306
here is my function knowing that i'm passing "Start" as a variable:
Code:
ALTER FUNCTION tu_efgn_int.Get_StartEndDates(@DateType varchar(10))
RETURNS varchar(8)
AS
BEGIN
DECLARE @vDate varchar(15)
Set @vDate= (Select @DateType + 'Date' From dbo.ps_tbl_SelectedDates)
RETURN @vDate
END
@vDate always returns "StartDate" as result instead of 20071231 why is that ?
Hi,
I am running the following MDX query through a DataReader and a Ado.Net Connection.
SELECT
{[Measures].[Deuda Total Nacional],
[Measures].[Deuda Total Nacional Maximo],
[Measures].[Cupo Nacional],
[Measures].[Porcentaje Utilizacion Maximo],
[Measures].[Pago Minimo Estado Cuenta],
[Measures].[Deuda Ultima Facturacion],
[Measures].[Dias Mora],
[Measures].[Dias Mora Maximo],
}
ON COLUMNS
,[Cuenta].[Cuenta].[Cuenta]*[Cuenta].[Rut].[Rut]*[Cuenta].[Dv].[Dv] ON ROWS
FROM [Bd Rtd]
WHERE [Tiempo].[Mes].&[2007-09-01T00:00:00]
The thing is, when I have about 10 thousand rows It runs in about 50 seconds which is good, but when I run this query and I have processed the cube with 100 thousand rows it runs out of memory and crashes.
I'm working in a shared development server with 1GB of memory for my project.
Is there any way to make it run anyway?? I mean even if it has to swap.
thanks
By the way when this thing goes into production it will have 1.5 million rows
I have a query which joins multiple tables. This query has suddenly begun to take up to 2 minutes to run (vs. 5-10 seconds previously).
No major change in number of records in the tables (currently about 220,000). When I remove the PK from one of the tables which then forces a tablescan, the query returns to running in 5-10 seconds. If I add the PK back, performance is back to 2 minutes.
Any suggestions short and/or long term?
Thanks for any help.
I have two servers: one production and one development. There is a third party query that runs on both servers. Yes, the query is poorly tuned - I cannot change it. In production, it runs in 54 minutes. In development, I have tried to let it run for days and it never completes.
Here's what I have tried so far:
Compared the settings of production vs. development. The settings are very similar - the development box is larger, 4 times more memory.
Max degree of parallelism is the same on both boxes.
No compression on both boxes.
The production server is fairly busy, the development server is empty - this is the only process running on it.
Plenty of free disk space.
Updated all statistics on all databases touched by the query on dev.
Indexing is the same on both boxes.
The development box is running MSSQL2012.
The production box is running MSSQL2008R2.
What I've noticed:
The query consumes a massive amount of CPU time.
HUGE number of reads (16 million reads for 10 writes according to sp_WhoIsActive)
Largest wait types are CXPACKET, SOS_SCHEDULER_YIELD and TRACEWRITE respectively.
wait_typesum_wait_time_mspct_wait_timesum_waiting_tasksavg_wait_time_ms
CXPACKET4142765580.7176307423.5
SOS_SCHEDULER_YIELD24146944.7532725530.0
TRACEWRITE19856343.914831338.9
I would like to create a query to find what user owns the job. It probably is in the master db, but I wouldn't know where to begin other than that. Telling me how to either change the job owner or create a job through t-sql would also help. Thanks
-Kyle
Hi All,
Recently we started using Pass throughs to perofmr large inserts, however we have started to notice that some of these pass throughs are executing twice, and therefore duplicating data.
Is this a known bug, and if not has anyone got any advice on what could be causing it?
We're connecting from Access 2002 (SP6) to SQL Server 2000 Enterprise.
The conenction string / code is as follows :-
Dim cmd As ADODB.Command
Set cmd = New ADODB.Command
Set cmd.ActiveConnection = CurrentProject.Connection
cmd.Properties("Jet OLEDBDBC Pass-Through Statement") = True
cmd.Properties _
("Jet OLEDB*** Through Query Connect String") = _
"ODBC;DSN=" & myDatabaseShort & ";DATABASE=" & myDatabase & ";UID=sa;PWD=" & Left(myDatabaseShort, 4) & ";"
It connects fine. My sql string is a straightforward Insert statement that only executes once via SQL Query Analyzer.
I'm calling the pass through using the following lines of code:-
cmd.CommandText = mysql
cmd.Execute
Can anyone see anything obvious that I'm doing wrong, or is this a known issue?
Cheers
Ok, I'll admit right off the bat that I never suspected that I'd ever raise this complaint, much less worry about how to fix the "problem" associated with it!
We're preparing to take a large set of changes (projects) to PeopleSoft Financials from development to test. The code is still somewhat rough, but it has been "desk checked" to ensure that it does what the developers think that it ought to do, and they've blessed it at that point. The code is now moving into the test phase, and the QA team is finding locking/blocking issues that we've never seen in this code before... Sort of a "lock avalanche" where no one process locks for very long, but many of them block one another to the point where applications actually "freeze" while almost never hitting a deadlock.
My solution was to create a "blitzkrieg" query / stored procedure that would periodically sample master.dbo.sysprocesses, master.dbo.sysdatabases, and apply one of the dm_ functions to gather information on locking, blocking, and deadlocking. My procedure runs nicely (it never hangs) and gets about 99.3% of the data that I want.
The problem is that the blasted query / stored procedure runs either too fast or too slow, depending on how you look at it. Because the dm_ function takes a few ms to run, there can be a situation where either a row appears as a false positive or as a missing row because of timing... Either the culprit shows up as a blocker, but by the time the victim spid is evaluated the block has cleared, or the row is skipped and by the time the victim is evaluated the block has occured.
The whole process runs in well under 100 ms when there is nothing to report, and I've never seen it run 200 ms yet under the worst conditions it has faced, so the code is fast... The problem is that I really don't want to try to enforce any kind of locking to resolve the issue, because that locking would impact performance and that is EXACTLY what I do NOT want to do.
Any suggestions?
-PatP
I have a query I developed and optimised as well as possible beforeconverting to a view.When running in query analyser the query runs in 15 to 18 seconds -which is acceptable.When "converting" into a view ( This is necessary for operationalreasons) and running with the same parameter it runs in 3 to 4minutes.Is there something I am unaware of ( well of course there is !!) -I was wondering why this occurs and how I can avoid / correct theissue.All advice gratefully received.Dave ( Still learning stuff about SQL Server every day!!)
View 1 Replies View RelatedA colleague of mine has a query which fails to run under SQLAgentbatch with the following error:The conversion of a char data type to a datetime data type resulted inan out-of-range datetime value. [SQLSTATE 22007] (Error 242) Thestatement has been terminated. [SQLSTATE 01000] (Error 3621). Thestep failed.He can run the same query sucessfully via query analyzer (i.e. noerrors, and it does what he wants)If I try to run the same query through Query Analyzer on myworkstation, I get a different error altogether:Server: Msg 242, Level 16, State 3, Procedure DateForGrouping, Line 11The conversion of a char data type to a datetime data type resulted inan out-of-range datetime value.Any idea what might be causing these differences in behaviourdepending on how and/or where the query is run from?The (working) statement in question is:================================================== ======================insert into Summary_ReferrerSalesselect DateCreated,ReferrerID,ReferrerIDCount,PUIDCount,ReferrerDescription,0 as TotalOrderValue,0 as TotalOrderLinesfrom vw_ReferrerPopularityWarning: Null value is eliminated by an aggregate or other SEToperation.(11996 row(s) affected)================================================== ====================And the table / view / function definitions (I take no responsibilityfor the view definition!) are:CREATE TABLE [Summary_ReferrerSales] ([DateCreated] [datetime] NULL ,[ReferrerID] [char] (2) NULL ,[ReferrerIDCount] [int] NULL ,[PUIDCount] [int] NULL ,[ReferrerDescription] [nchar] (100) NULL ,[TotalOrderValue] [numeric](18, 0) NULL ,[TotalOrderLines] [numeric](18, 0) NULL) ON [PRIMARY]CREATE VIEW dbo.vw_ReferrerPopularityASSELECT TOP 100 PERCENT COUNT(dbo.LogReferrerID.Referrer) ASReferrerIDCount,COUNT(DISTINCT dbo.LogReferrerID.PUID) AS PUIDCount,dbo.DateForGrouping(dbo.LogReferrerID.DateUsed)AS DateCreated,dbo.LogReferrerID.Referrer AS ReferrerID,dbo.LookupReferrerID.ReferrerDescriptionFROMdbo.LogReferrerID INNER JOIN dbo.LookupReferrerIDON dbo.LogReferrerID.Referrer = dbo.LookupReferrerID.ReferrerIDWHERE (dbo.LogReferrerID.DateUsed > CONVERT(DATETIME, '2003-09-0100:00:00', 102))GROUP BY dbo.LogReferrerID.Referrer,dbo.DateForGrouping(dbo.LogReferrerID.DateUsed),dbo.LookupReferrerID.ReferrerDescriptionHAVING (dbo.LogReferrerID.Referrer <> 'WS')AND (COUNT(dbo.LogReferrerID.Referrer) IS NOT NULL)AND (dbo.LookupReferrerID.ReferrerDescription IS NOT NULL)AND (dbo.DateForGrouping(dbo.LogReferrerID.DateUsed) >CONVERT(DATETIME, '2003-09-01 00:00:00', 102))AND (COUNT(DISTINCT dbo.LogReferrerID.PUID) IS NOT NULL)ORDER BY dbo.DateForGrouping(dbo.LogReferrerID.DateUsed) DESCCREATE TABLE [LogReferrerID] ([LogReferrerID] [int] NULL ,[Referrer] [varchar] (2) NULL ,[DateUsed] [smalldatetime] NULL ,[HTTPReferrer] [varchar] (1000) NULL ,[TargetURL] [varchar] (1000) NULL ,[QueryString] [varchar] (1000) NULL ,[PUID] [varchar] (50) NULL) ON [PRIMARY]CREATE TABLE [LookupReferrerID] ([ReferrerID] [char] (2) NOT NULL ,[ReferrerDescription] [varchar] (100) NOT NULL ,CONSTRAINT [PK_Lookup_ReferrerID] PRIMARY KEY CLUSTERED([ReferrerID]) ON [PRIMARY]) ON [PRIMARY]CREATE FUNCTION dbo.DateForGrouping (@RowDate datetime)RETURNS datetime ASBEGINdeclare @datestring char(10)set @datestring=cast(datepart(dd,@RowDate) as char(2)) + '/' +cast(datepart(mm,@RowDate) as char(2)) + '/' +cast(datepart(yyyy,@RowDate) as char(4))return cast(@datestring as datetime)END
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Hi all,
I know this sounds rather dumb but my select statement is running forever!
I am trying to execute the statement through my C# code.
If I try to run the query through sql server management studio, sometimes it runs fine, but sometimes it keeps running and never returns a value.
I am doing something like this:
###########################################################################################
String query = "SELECT studentID from StudentTable WHERE studentDeptID = '100' AND deptName = 'CS'";
SqlCommand command = new SqlCommand(query, connection);
Object myObject = command.ExecuteScalar();
############################################################################################
StudentTable contains roughly 1000 rows.
Somebody please help me out of this. Thanks in advance.
Surya
This is in ASP.NET 1.1. I have a performance problem with a webform. The form contains several bound fields and a couple datagrids. I fill the grids by creating a data adapter, then I use the adapter to fill a dataset, then I set the grid datasource to the dataset.
The query to fill one of the grids is getting a SQL timeout when running from my application (it takes about 40 seconds to complete). When I run the same SQL code from SQL Query Analyzer it runs in less than 1 second. (it is embedded sql in the app, not a stored procedure).
I suspect that something else is being requested from SQL during the postback that is causing a blocking issue or something but I can't tell exactly what is happening. I've tried tracing through the code and all that I can tell is that the timeout occurs during the dataadapter.fill command.
Has anyone else seen something similar? Is there a good way for me to see what SQL commands are being executed from ASP.NET? Any advice on debugging this would be much appreciated.