SQL 2012 :: How To Test A Proposed Index Addition
Sep 29, 2015
My goal is to be able to include test information in the change request that will make the operations manager confident that the change can proceed. Right now all I can think of is to add the index in dev and staging and compare some before and after stats. But I am concerned that an index change might also affect other operations besides SELECTs - such as updates, transactions, or scheduled jobs.
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Feb 23, 2005
How can I test if a table already has a specific index present?
Id normally test for an object with: if object_ID('My Object') is null then...
What technique works with an index? Or can you use the object_Id function, how do you reference the index?
Many thanks.
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Jun 25, 2015
I need to restore test DB from production backup but once it is restored I would need all the permissions of sql logins and windows AD account intact in test Db as it was before.
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Sep 30, 2015
I am using Full Text Index to index emails stored in BLOB column in a table. Index process parses stored emails, and, if there is one or more files attached to the email these documents get indexed too. In result when I'm querying the full text index for a word or phrase I am getting reference to the email containing the word of phrase if interest if the word was used in the email body OR if it was used in any document attached to the email.
How to distinguish in a Full Text query that the result came from an embedded document rather than from "main" document? Or if that's not possible how to disable indexing of embedded documents?
My goal is either to give a user an option if he or she wants to search emails (email bodies only) OR emails AND documents attached to them, or at least clearly indicate in the returned result the real source where the word or phrase has been found.
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Mar 5, 2015
I have a clustered index that consists of 3 int columns in this order: DateKey, LocationKey, ItemKey (there are many other columns in this data warehouse table such as quantities, prices, etc.).
Now I want to add a non-clustered index on just one of the other columns, say LocationKey, like this:
CREATE INDEX IX_test on TableName (LocationKey)
I understand that the clustered index keys will also be added as key columns to any NC indexes. So, in this case the NC index will also get the other two columns from the clustered index added as key columns. But, in what order will they be added?
Will the resulting index keys on this new NC index effectively be:
LocationKey, DateKey, ItemKey
OR
LocationKey, ItemKey, DateKey
Do the clustering keys get added to a NC index in the same order as they are defined in the clustered index?
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Jan 27, 2015
After breaking the mirroring database to allow testing on the DR site, is the only way to re-establish the mirroring again to copy the backups from the actual production site ?. Can something be done on the DR site to put back the mirroring after the test ?.
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Sep 9, 2014
What are the tables are having the Default Constraint those table's Script the User can't generate but remaining tables He/She can generate,If i want DENY he/she to do not generate the script those are not having the DF Constraints what should i do.....
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Dec 11, 2014
I am try to put together options in regard to creating a test environment for our Dynamics NAV system. The environment will be mainly used to test new releases / changes ahead of applying them to production.The 2 options I am considering are…
1.Create a second Test instance on our Production SQL Server to host a test database
2.Purchase a set of SQL developer licences and having a totally separate server for our test environment.
My preference would be option 2. However I need to build a convincing case that this is the best way forward. I wondered if I could tap into the thoughts of the SQL Central community and see how other approach this.
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Jul 23, 2014
I am attempting to create a Test db from a full backup of the production db. With 2012, I cannot do it the the way i had done it in previous versions (and now i understand why because of Logical names).
The Test db runs in the same instance as Prod db.
I attempted to run this but come up with errors. This is what i executed:
RESTORE DATABASE TEST FROM DISK = 'E:<path>FULL.BAK'
WITH REPLACE, RECOVERY,
MOVE 'PROD' TO 'E:<path>TEST.MDF';
The errors are all cannot execute due to PROD is in use.
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Mar 3, 2015
Setting up Transaction Replication in test environment. I am willing to bet that most of you take a production backup (if so, how, and using what?), restoring the database to your test environment, then running a snapshot to your subscriber and away you go.
But perhaps you take a backup of your publisher and subscriber, if so, how do you know there are no inconsistences because there were transactions sitting on the distributor?
What do you do if you have additional indexes on the subscriber for reporting, that are not on the publisher?
Here at work we are having issues with getting consistent databases set up with T Rep, missing rows, duplicate keys at subscriber etc. How to avoid these issues.
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May 29, 2015
I am creating my first SSIS package, simple, I read a file, a computation and then write it to an excel.
I am getting the message: "Test connection failed because of an error in initializing provider." The database is NOT remote. My computer is slow though. after about 10 or 15 seconds after clicking the button to test my connection, I get the message and much more. The message asks me if the instance name is correct. I don't know what this would be. This message is on the first task, reading the file (finding the file).
The last sentence of the long message is: "Named pipes provider: Could not open a connection to SQL Server (2).
My question is: Why am I getting this message and what do I need to do to resolve this problem?
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Oct 19, 2015
I am trying to send out notifications when jobs complete (fail or succeed). I have database mail working fine on my DEV server, but I am having issues with it on my PROD server. I am currently having people look into if McAfee may be blocking it.
I am able to send out a test email from SSMS>Management>Database Mail, but when I set a Notification for a job, the job will complete and in the history, it will say "NOTE: Failed to notify 'User' via email."
I have created an Operator and set up Profiles and Accounts, just as I did on my DEV server.
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Dec 5, 2013
I have a closed polygon that coincidently is in the shape of Iowa :) I have a point that is within the state and a point WELL outside it, but I get weird results that I don't expect when I try to get it to tell me that the point is within the polygon. Here is some basic code, with long coordinates data.
DECLARE @g geography,
@pIn geography,
@pOut geography
SET @g = geography::STPolyFromText('POLYGON((-91.119987 40.705402, -91.129158 40.682148, -91.162498 40.656311, -91.214912 40.643818, -91.262062 40.639545, -91.375610 40.603439, -91.411118 40.572971, -91.412872 40.547993, -91.382103 40.528496, -91.374794 40.503654, -91.385399 40.447250, -91.372757 40.402988, -91.385757 40.392361, -91.418816 40.386875, -91.448593 40.371902, -91.476883 40.390968, -91.490158 40.390762, -91.500221
[code]...
(1 row(s) affected)As I read that there is a distance of about 7864 meters, this is close to what I would expect, so that's ok. The point outside I would expect a distance as well so that is confusing.. Then we have the intersects, it says that the point inside does NOT intersect but the one outside DOES, this is backed up by the intersection values.
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Oct 12, 2015
We are setting up a test lab environment with 100 machines. We want one master testing db that gets replicated to each to run scripted application tests nightly.
My goal is to minimize the amount of work to move this thing to each of the 100 test machines. I am wondering if we need to even have the sql local and invest in a monster db server with 100 copies of the db we restore and each test machine point to their own db on that server, or if I should use db mirroring or something to get the master test db to each of those machines instead.
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Dec 3, 2001
Any idea what is this error that I am getting when trying to change the db owner of the database as sa.Currently owner is different than sa.
Server: Msg 15110, Level 16, State 1, Procedure sp_changedbowner, Line 46
The proposed new database owner is already a user in the database.
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Oct 17, 2006
Now that we have a good programming model in SSIS - the question is whether to write automated unit tests for your packages, and would it generally be a good idea for packages?
Also - if yes to write tests - then where to find more informations regarding How to accomplish that?
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Nov 27, 2007
hi every one,
i need to test SSIS pacakge which will import data from different database where record count is around 5 millions.
iam planning to test it through c# code as well as manually also.
SSIS source : consist of 7 tables
SSIS destination :consist of 7 tables
Using c# code iam trying to run ssis package through batch file.
i am putting expected rowcount, column count in an excel file and comparing same with destination tables by writing query implementing ADO.Net concept.
am i going right way ,can any one suggest best and productive way to test the ssis package .
what are the other things i need to test it.
do any one can add test cases to it.
S.No
Test Case
1
Verify all the tables have been imported.
2
Verify all the rows in each table have been imported.
3
Verify all the columns specified in source query for each table have been imported
4
Verify all the data has been received without any truncation for each column.
5
Verify the schema at source and destination
6
Verify the time taken /speed for data transfer
7
Fields truncated due to difference in length of the field at destination.
Regards
Arif shareef
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Mar 24, 2014
I have a table with primary key and also clustered index on that primary key column. I need almost all columns from that table. When I wrote the select column names, it showing that Index scan occurred. How can I avoid that Index scan and change to index seek? When I check the fragmentation of that Index it is showing more than 34%. Is that fragmentation is ok or do I need to reorg the Index?
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May 5, 2014
I have a question regarding indexes.
If i have cluster and NC index on same column,does it degrade performance on DML statements ? any advantage on select statements.
Is it good to have both indexes on same column ?
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Oct 1, 2014
observed below error in sqlserver2012.index was out of range. Must be non-negative and less than the size of the collection.
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Mar 20, 2015
how to fragment an index so I can test it's fragmented performance on an iSCSI LUN.I can test without an index, that's fine. I can test with a newly created index (of course that means it's not fragmented) and that's fine.But what I want to do is DELIBERATELY FRAGMENT () an index to 90%+ fragmented to test it's performance.
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Aug 28, 2007
How can i make a sum (concatenation) of strings of one column in a table.
for example i have a table like this
field1 field2
1 abc
1 bcd
2 sdf
2 sdd
I want to get these strings added group by field 1
Thanks
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Jan 24, 2001
For an existing table containing data, how would you add a primary key field, that contains a value for each row?
(Under Access I'd just add a new field and set it to type AutoNumber, but you can't do that in SQL Server)
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Jan 15, 2002
Hi Everybody,
I hv executed the following query in the Query Qnalyzer
(Ofcourse I am Using SQL 2000 Enterprise Edition) and Surprisingly
I am getting the Output as follows,
query:-
select '5' + 10
Output:- 15
Can anybody please tell me, why it is happening like this? OR Did I miss any Configuration Parameter in the Server Settings?.
Tks in Advance,
Sam
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May 12, 2008
Hi
Is there anyway to perform a addition on two items in a COUNT query?
For example if i use the followig query:
SELECT
Region
,COUNT(*)
FROM Regions
GROUP BY Regions
It would give me the following results:
Region1 22
Region2 33
Region3 21
Region4 4
Region5 9
Region6 61
However I would want it display the the combined totals Region1 and Region2 together so it would give the figure of 55.
Is this possible?
Thanks
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Dec 6, 2006
i have the idea that 23+null=null
now following is my case with 2 columns as:
salary bonus
1 null
2 5
3 null
i have to find the total salary(i.e. salary+bonus)
this is how i managed to do it:
select empname,(salary + commission) as 'total salary'
from emp
where commission is not null
union
select empname,salary from emp
where commission is null
now my question is,wht if the case now is different as below:
salary bonus hra
1 null 6
2 5 null
3 null null
now how do i calculate total salary(i.e. salary+bonus+hra)
am a beginner
help appreciated
cheers
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Mar 22, 2007
hi guys,
I have got something like this,
A S D
Bi Ar 23
Bi Ar 12
As Ar 52
As Ar 11
Ap Jo 24
I Have 3 columns. First 2 columns are Text and the third one is Number. I need to see if any duplicate values are there in first 2 columns. If so then i need to add the values of 3 columns and make it one. So the output should look like this,
A S D
Bi Ar 35
As Ar 63
Ap Jo 24
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Nov 12, 2013
I am experiencing of problem relating to the error message on the production SQLServer2012;
Index was outside the bounds of array. (Microsoft.SqlServer.Smo)
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Mar 28, 2014
I want to know more details about the Clustered Index Delete. Is that Clustered Index Delete in the execution plan is good or bad or we can neglect that cost. Is there any way to avoid that clustered Index delete operator from the execution plan.
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Mar 31, 2014
When creating a column store index, are there any reasons not to include all columns, besides index size of course? i.e. will the index be more versatile with more columns or should I treat it exactly like its a standard index, putting only necessary columns, in the correct order?
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Jun 2, 2014
We have few tables where we do truncate load or only do insert activities , why do the cluster index get fragmented very often to > 80%?
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Jun 11, 2014
When I go to SQL 2012 through SSMS 2005, I get the message Index outside the bounds of array. Will it fix if I install SSMS 2012? Do I need to remove SSMS 2005?
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Jul 29, 2014
- What are your thoughts on adding clustered index on datetime (createdDate , native GUID) column. The data will be be physically organized in the clustered index allowing range operations to perform its duties. But will the GUID column make any impact ( drawbacks) should it be made part of the clustered key ?
The GUID column will provide the lookup with the required indexes to support.
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