Hi,
Can anybody help me how to Stop this 'System Creation Indexes' (Index Name like 'WA%')?.
Is there any method is available to delete the Existing 'System Indexes'?.
thanks,
Srini
Hi All,
In the manual I find the following comment for creating indexes.
"If partition_scheme_name or filegroup is not specified and the table is partitioned, the index is placed in the same partition scheme, using the same partitioning column, as the underlying table."
We are creating some dimensional models in SQL Server with about 100M rows in the largest fact tables.
What I have created are base tables which were on 'primary' and then created a clustered index over a partitioning scheme. I did this as I figured the data will go into the clustered index in any case.
However, when I then create indexes on these tables they do not look like they are petitioned....at least not as far as I can tell.
Q1. Is there some way to tell if the index was partitioned properly?
Q2. If the index is not partitioned is there any simply way to alter the table to the partitioning scheme? My reading of the manual tells me I have to unload, truncate, alter and then reload the table. Is there a better way?
Thanks in advance for your assistance.
Best Regards
Peter
Script they use to generate indexes in SQL 2005.
I have 2 databases on a separate instance. I want to script out all indexes from database1 then execute it on database2.
How to accomplish this task efficiently.
We are running SQL Server 2014 Enterprise Edition (64-Bit) on Windows 2012 R2 Standard (64-Bit).
1. When to create indexes, before or after data is added? Please address Clustered and Non-Clustered Indexes.
2. To move indexes to it's own filegroup, is it best to create the NON-Clustered Indexes on the separate filegroup with code similar to the example below?
CREATE NONCLUSTERED INDEX IX_Employee_OrganizationLevel_OrganizationNode
ON HumanResources.Employee (OrganizationLevel, OrganizationNode)
WITH (DROP_EXISTING = ON)
ON TransactionsFG1;
GO
I have read the following links that states that if you create the Clustered Index on a separate filegroup, it would also move the base table to that particular filegroup. (So I take it that you ONLY can move NON-CLustered Indexes to a separate filegroup.)
Placing Indexes on Filegroups:
[URL]
By default, indexes are stored in the same filegroup as the base table on which the index is created. A nonpartitioned clustered index and the base table always reside in the same filegroup. However, you can do the following:
• Create nonclustered indexes on a filegroup other than the filegroup of the base table.
Move an Existing Index to a Different Filegroup:
[URL]
Limitations and Restrictions
• If a table has a clustered index, moving the clustered index to a new filegroup moves the table to that filegroup.
• You cannot move indexes created using a UNIQUE or PRIMARY KEY constraint using Management Studio. To move these indexes use the CREATE INDEX statement with the (DROP_EXISTING=ON) option in Transact-SQL.
Hi evebodody
How to get arround and create Update trigger on system table(syscomments)
I am getting permission Error while trying to create it even I logged in as "SA" ?
I wanted to trace SESSION_USER and HOST_NAME on any changes
and save it to "Log Table"
i am creating/uploading a new file on the webserver, and if it is successfully i want to insert a record in the database (with the filename).is there a way to create a transaction for this so that if either operation fails they both fail?
View 2 Replies View RelatedI ran a SP that lists fragmented tables in our DB which listed almost all the tables and indexes in the DB. The list includes index names that start with "_WA_Sys_tablecolumn name_.....". Are these SQL Server generated indexes or are these statitics on the tables? What are they? If these are system generated indexes as I thought they were, how are they generated? Can these indexes be dropped or should one want to? IF so, how? Any effect on the DB performance if dropped?
Thanks for your advise.
Helen
Hi,Is het possible to find information about indexes in SQL Server 2000?Information like pad index, fill factor, index fields, SortinTempdb?Gr,Hennie
View 3 Replies View RelatedI have come across a user that has error 2525 errors on sysobjects tables throughout their SQL 6.5 system. The ids match and I can identify the index. But as they are system tables I cannot drop or rebuild the indexes.
Any ideas please?
The errors have been occuring for some time, so it is not an option to restore. I would like to avoid having to transfer data to and from another SQL Server.
Many Thanks
Anyone know how to place additional indexes on system tables?
View 1 Replies View Relatedhi, if exists (select * from sysobjects where id = object_id('dbo.MRDD_FINAL') and sysstat & 0xf = 3)
drop table dbo.MRDD_FINAL
This code was generated when I used the create a script to build a table from an existing table.
is there a way to check if a a table contains data or not,
The whole idea is to check if table A contains data, I need to truncate the table,otherwise I do nothing...
regards
Ali
Hi,
We have a client that has a large (5Gb) database replicated to 13 subscribers, the publisher is Sql 2005, the subscribers are Sql Express. The publication has as few filtered articles too. I have found that after several months of continuous running Replication Monitor is taking a long time to report history on each subscriber.
Do people tend to rebuild the indexes on the system merge replication tables on production servers, or should the standard replication jobs take care of this?
Thanks for your help
Graham
I'm working to improve performance on a database I've inherited, and there are several thousand indexes. I've got a list of ones which should definitely exist within the database, and I'm looking to strip out all the others and start fresh, though this list is still quite large (1000 or so).
Is there a way I can remove all the indexes that are not in my list without too much trouble? I.e. without having to manually go through them all individually. The list is currently in a csv file.
I'm looking to either automate the removal of indexes not in the list, or possibly to generate the Create statements for the indexes on the list and simply remove all indexes and then run these statements.
As an aside, when trying to list all indexes in the database, I've found various scripts to do this, but found they all seem to produce differing results. What is the best script to list all indexes?
Hello
I am running an script and the following sentence throws and error because the DTC service is not running in the Remote Server:
insert into MyLocalTable
execute synonym_MyRemoteProcedure @SomeParameter
Since a transaction is not declared within the script, why is the DTC required?
How can I avoid the usage of the DTC? Is there a way to say "this code is not within a distributed transaction"?
Thanks a lot.
Here is a simplified example of a problem I am facing.
I have 2 tables: Tasks and Employees.
Tasks:
(Task_ID, Task_Name, Task_Type, Task_Requirement, Employee_ID)
Employees:
Emp_ID, Emp_Name, Emp_Specialty, Emp_Task_Cnt, Max_Task_Cnt
Requirements: Write a MS SQLServer 2000 Storeed Procedure to:
1. Update the Tasks table by assigning the task to an Employee.
2. Incrememnt the employee's Emp_Task_Cnt for each Task assigned.
3. Match the Employee to the Task by matching the Task_Requirement to the Emp_Specialty.
4. Do not exceed the employee's Max_Task_Cnt.
I have a working solution to the requirements, but it involves using cursor logic. For all the obvious reasons, I wanted to avoid using a cursor (or cursor-like looping structure) but could not figure out any other way to avoid processing the Task table one record at a time because of the: "4. Do not allow an Employee's Task_Cnt to exeed the Max_Task_Cnt."
Q: Is there a way to do this without using a cursor and still meet all of the requirements?
I'm trying to performance tune a procedure and am sort of being thwarted by caching.
When I first run the procedure, it takes a few seconds which is too long in this case. Subsequent executions in Management Studio are nearly instantaneous, though, which I imagine is due to caching and does not reflect the behavior of the procedure in production.
Is there a way to disable caching so that each execution of the procedure in Management Studio will be consistent and reflect the "first run" performance?
This query uses a cursor to fetch a parameter and pass it to another Stored proc. Is there a straightforward way to do this without using a cursor?
declare @deleteunassigned int
declare cur_unassigned cursor for select distinct a.cust_cont_pk
from cust_cont a, cont_fold_ass b (NOLOCK)
where a.cust_cont_pk != b.CUST_CONT_PK
open cur_unassigned
fetch next from cur_unassigned into @deleteunassigned
while @@fetch_status = 0
begin
exec spDeleteCustContbypk @deleteunassigned
fetch next from cur_unassigned into @deleteunassigned
end
close cur_unassigned
deallocate cur_unassigned
GO
declare @deleteunassigned int
declare cur_unassigned
cursor for
SELECT DISTINCT a.cust_cont_pk
FROM cust_cont a,
cont_fold_ass b (NOLOCK)
WHERE a.cust_cont_pk != b.CUST_CONT_PK
open cur_unassigned
FETCH NEXT FROM cur_unassigned INTO @deleteunassigned
while @@fetch_status = 0
begin
exec spDeleteCustContbypk @deleteunassigned
FETCH NEXT FROM cur_unassigned INTO @deleteunassigned
end
close cur_unassigned
deallocate cur_unassigned
GO
Future guru in the making.
Using small stored procs or sp_executesql dramatically reduces the number ofrecompiles and increases the reuse of execution plans. This is evident fromboth the usecount in syscacheobjects, perfmon, and profiler. However I'm ata loss to determine what causes a compilation. Under rare circumstances theusecount for Compiled Plan does not increase as statements are run. Seemsto correspond to when there is no execution plan. It would seem to me thatcompilation is a resource intensive task that if possible (data and schemaare not changing) should be held to a minimum.How does one encourage the reuse of compile plans?Is this the same as minimizing compilation?Looks like some of this behavior is changing in SQL 2005....Thanks,Danny
View 3 Replies View RelatedI have a stored procedure spUpdateClient, which takes as params a number of properties of a client application that wants to register its existence with the database. The sp just needs to add a new row or update an existing row with this data.
I tried to accomplish this with code somethign like this. (The table I'm updating is called Client, and its primary key is ClientId, which is a value passed into the sp from the client.)
IF (SELECT COUNT(ClientId) FROM Clients WHERE ClientId=@ClientId) = 0
BEGIN
-- client not found, create it
INSERT INTO Clients (ClientId, Hostname, Etc)
VALUES (@ClientId, @Hostname, @Etc)
END
ELSE
BEGIN
-- client was found, update it
UPDATE Clients
SET Hostname=@Hostname, Etc=@Etc
WHERE ClientId=@ClientId
END
But the client apps call this every second or so, so soon enough I started getting primary key violations. It looks like one client would make two calls nearly at the same time, both would get a 0 value on the SELECT line, so both would try to insert a new row with the same ClientId. No good.
So then I added
SET TRANSACTION ISOLATION LEVEL SERIALIZABLE
BEGIN TRANSACTION
at the top, and a COMMIT at the bottom. I thought the first one in would get to run the whole sp, and the next one in would have to wait for the first to be done.
Instead I'm now getting deadlock errors.
If I understand the docs right, that's because the exclusive lock is not placed on the Clients table until the INSERT happens, not at the SELECT. So when two calls to the sp happen at nearly the same time (call them A and B), A does the SELECT and that locks Clients so nobody else can update it. Then B does the SELECT, locking Clients so nobody else (including A) can update it. Now A needs to exclusively lock Clients to do its INSERT, but B still has that read lock on it, and they're deadlocked.
I could catch the deadlock in my client app after SQL Server kills one of the transactions, but it seems to me there should be some way to set a lock at the top of the sp that says "nobody else can enter this sp until I exit it". Any such thing?
Thanks.
Nate Hekman
Hello.
I have been developing a small site that has two backend SQL Server databases. One for my application data and one for the ASPNETDB database that is created by the ASP .NET Configuration utility.
Is it possible to configure the ASP .NET Configuration tool to use my custom database instead of creating a second database called ASPNETDB?
Thanks in advance.
Kev
I am exclusively using Stored Procedures to access the database, i.e. there are no Ad-Hoc SQL statements anywhere in the C# code. However, one thing I need to be able to do is to allow filtering for data grids on my ASP.NET page. I want to do the filtering in the Stored Procedure using Dynamic SQL to set the WHERE clause. However, one fear of mine is SQL injection from the client. How can I avoid arbitrary SQL injection, yet still allow for a dynamic WHERE clause to be passed into the stored procedure?
Jason Pacheco
Hello all,
I currently have an asp script that is generating a 12 month rolling report. From asp I'm running a for loop with 12 iterations, each one sending the following query:
select count(a.aReportDate) as ttl from findings f left outer join audits a on a.aID = f.auditID
where f.findingInvalid <> 1 and month(aReportDate) = " & Mo & " and year(aReportDate) = " & Yr
where the Mo and Yr variables are incremented accordingly.
I actually have 4 sets of data being pulled back to populate a graph, so this results in 48 queries with each page load! Obviously not ideal. So I'm hoping to reduce this to 4 queries. I was playing with the following in enterprise manager:
DECLARE @DT DATETIME
DECLARE @CNT INT
SET @DT = '10/31/07'
SET @CNT = 1
WHILE(@CNT < 12)
BEGIN
select count(a.aReportDate) as ttl from findings f left outer join audits a on a.aID = f.auditID
where f.findingInvalid <> 1 and month(aReportDate) = month(@DT) and year(aReportDate) = year(@DT)
SET @CNT = @CNT + 1
END
I haven't yet added any logic to increment the date, but my concern is that it looks like it is returning 12 separate results. Is there any way to combine this all into one resultset that will be passed back to my asp script? Hopefully this makes sense?
Suggestions on a completely different approach would also be welcome.
Thanks!
Hi,
Hope someone could help me in revising a long running query. Here is the query
select *
from table1
where classid is null
and productid not in (
select productid
from table1
where classid = 67)
In here table1 could have several occurance of productid in which productid could have different classid. The possible values of classid are: NULL,1,2,3,67. Basically I am looking for all records whose classid is null but should never had an instance in table1 where its classid is 67.
Do you have something like a "join" statment that will only include all records in the left table that is not in the right table?
Hope someone could help me with this. Thanks in advance.
-Ruel
MS SQL Server 2005
I have a table in our system that hold temporary data for doing calculations. It will process several million records in it. each time they forecast our products.....
Is there any way to have the SQL server NOT add these transactions to the transaction log, since I'm going to wipe the data anyway? I'd like to be able to pick and choose the tables that are 'backed up' into the transaction log...
Please advice. Thanks
I am trying to figure out an efficient way of comparing two tables of identical structure and primary keys only I want to do a join where one of the tables reveals values for records which have been modified and/or updated.
To illustrate, I have two tables in the generic form:
id-dt-val
For which the 'val' in table 2 could be different from the 'val' in table 1 - for a given id-dt coupling that are identical in both tables.
Does anyone know of an efficient way I could return all id-dt couplings in table 2 which have values that are different from those with the same id-dt couplings in table 1?
NOTE: I am asking this because I am trying to avoid explicit comparisons between the 'val' columns. The tables I am working with in actuality have roughly 900 or so columns, so I don't want this kind of a monster query to do (otherwise, I would simply do something like where a.id = b.id and a.dt = b.dt and a.val <> b.val) - but this won't do in this case.
As a sample query, I have the following script below. When I attempt the where not exists, as you might expect, I only get the one record in which the id-dt coupling is different from those in table 1, but I'm not sure how to return the other records where the id-dt coupling is the same in table 1 but for where modified values exist:
create table #tab1
(
id varchar(3),
dt datetime,
val float
)
go
create table #tab2
(
id varchar(3),
dt datetime,
val float
)
go
insert into #tab1
values
('ABC','01/31/1990',5.436)
go
insert into #tab1
values
('DEF','01/31/1990',4.427)
go
insert into #tab1
values
('GHI','01/31/1990',7.724)
go
insert into #tab2
values
('XYZ','01/31/1990',3.333)
go
insert into #tab2
values
('DEF','01/31/1990',11.111)
go
insert into #tab2
values
('GHI','01/31/1990',12.112)
go
select a.* from #tab2 a --Trouble is, this only returns the XYZ record
where not exists
(select b.* from #tab1 b where a.id = b.id and a.dt = b.dt)
go
drop table #tab1
drop table #tab2
go
I really dont' want to have to code up a loop to do the value by value comparison for inequality, so if anyone knows of an efficient set-based way of doing this, I would really appreciate it.
Any advice appreciated!
-KS
The C++ application calls the database to look up property data. Onetroublesome query is a function that returns a table, finding data whichis assembled from four or five tables through a view that has a join,and then updating the resulting @table from some other tables. Thereare several queries inside the function, which are selected accordingto which parameters are supplied (house #, street, zip, or perhaps parcelnumber, or house #, street, town, city,...etc.). If a lot of parametersare provided, and the property is not in the database, then several queriesmay be attempted -- it keeps going until it runs out of queries or findssomething. Usually it takes ~1-2 sec for a hit, but maybe a minute insome failure cases, depending on the distribution of data. (~100 milproperties in the DB) Some queires operate on the assumption the input datais slightly faulty, and take relatively a long time, e.g., if WHEREZIP=@Zip fails, we try WHERE ZIP LIKE substring(@Zip,1,3)+'%'. Whileall this is going on the application may decide the DB is never going toreturn, and time out; it also seems more likely to throw an exception thelonger it has to wait. Is there a way to cause the DB function to fail ifit takes more than a certain amount of time? I could also recast it asa procedure, and check the time consumed after every query, and abandonthe search if a certain amount of time has elapsed.Thanks in advance,Jim Geissman
View 3 Replies View RelatedWhat is the experession to evaluate if the result of a computation would be a divide by zero error for a text box in report?
IIF(divide by zero, display nothing, else display computed result)...??
I have a Master/Detail table setup - let's call the master "Account" and the detail "Amount". I also have a "black box" stored procedure (BlackBox_sp) which carries out a lot of complex processing.
What I need to do is, for each Account, I need to iterate thtough it's Amount records and call the black box each time. Once I've finished going through all the Amount records, I need to call the black box again once for the Account. This must be done with the Account & Amount rows in a specific order.
So I have something along the lines of
Code Block
DECLARE Total int
DECLARE Account_cur
OPEN Account_cur
FETCH NEXT FROM Account_cur
WHILE FETCH_STATUS = 0
BEGIN
SET Total = 0
DECLARE Amount_cur
OPEN Amount_cur
FETCH NEXT FROM Amount_cur
WHILE FETCH_STATUS = 0
BEGIN
SET Total = Total + Amount
EXEC BlackBox_sp (Amount)
END
CLOSE Amount_cur
EXEC BlackBox_sp (Total)
END
CLOSE Account_cur
Any tips on another approach would be appreciated given the contraints I have.
Greg.
I have web site when people orders through website at same time, a problem can be arrive when allocating next primary key value to new record, using maximum number of records +1
how to avoid this problem and insert to sql server
please give me your ideas
Hi there,
I'm using a query to fetch data from a table where one of the criteria is IN(...) clause for the key column of the table.Now the data being retrieved is ordered by the key column of the table even though I haven't specified any order by clause.
I want to know if there a way in which the data being fetched is in the order of my IN(...) clause.
Thanx
Aby
Hi there!
Here is my situation:
table 'ReceiptHeader'
IDCustomerIDDateCreated
1225102/06/2002
1332102/09/2002
1444002/15/2002
table 'ReceiptDiscount'
IDDiscountIDReceiptHeaderIDAmount
111210.00
241250.00
311325.00
**a receipt can have multiple discounts**
Table 'ReceiptDetail'
ReceiptHeaderID LineItemIDTotal
121155.33
131145.33
141241.66
**for this example there is only one line item per receipt**
Without using a cursor, i would like to return a result set
like this one below using a set based solution...
ReceiptIDCustomerIDDiscountTotal
1225160.00155.33
1332125.00145.33
144400.00241.66
Thanks,
SF
Guys,
Is there a way to temporarily disable logging into the transaction log.
In our system, we perform purging of our database every night, where the purging consists of 2 steps:
1. For each table, insert the data, to be deleted, into a corresponding "purged" table, to remain there for one day only.
2. For each table, delete the unnecessary data (i.e. same data stored in purged tables in step 1)
During these 2 steps, the transaction log grows, and since we perform the transactional log back up, the back up at that time is huge. We are running a bit low on the hard disk space and I'd like to disable logging into the transaction log when these operations are performed.
I really don't care about being able to recover this data.
I thought that one option is to set the database to simple recovery, then perform the purging of the database, and then change back to full.
However, I think that trans log can grow even if recovery model is simple [although you won't be able to retrieve any changes].
So, is there a way to delete a portion of a table [or insert into it] so that no data is written to a transaction log (I know that we can use TRUNCATE if we need to remove whole table without logging)?
Thanks a lot
We have an SSAS instance where when we run the query "select * from $system.discover_traces" the creation time in the resultset shows a different time from when we actually started the trace.
for example if we have create the trace at 3.30pm it shows 7.35 pm in the Sql server management studio resultset when we run the query "select * from $system.discover_traces".