SQL Server 2008 :: Creating Index Including Non-key Columns
Jul 9, 2015Does including non-key columns work for the performance of an index?
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SQL Server 2008 :: Creating Index - Add Unique Key That Will Cover 3 Fields
Sep 30, 2015Table Name: Denominator
Already has the following constraint:
PK_Denominatorclustered, unique, primary key located on PRIMARY DenominatorID
How can I add a unique key that will cover the 3 fields --> MemberID,MeasureID,TimePeriodID
I also want to know whether we can include the " WITH ( IGNORE_DUP_KEY=ON ) "
SQL 2012 :: Creating Index On Multiple Columns Separately
Jul 28, 2015I used following query to identify missing indexes:
SELECT mid.statement , mid.included_columns, mid.equality_columns, mid.inequality_columns,
migs.avg_total_user_cost * (migs.avg_user_impact / 100.0) * (migs.user_seeks + migs.user_scans) AS improvement_measure,
'CREATE INDEX [NCIX_' + CONVERT (varchar, mig.index_group_handle) + '_' + CONVERT (varchar, mid.index_handle)
+ '_' + LEFT (PARSENAME(mid.statement, 1), 32) + ']'
+ ' ON ' + mid.statement
[Code] ....
I think I need to only create few if an index is covering all columns then I do not need to create more indexes for separate columns or should I create separate index as suggested?
Similarly:
CREATE INDEX [NCIX_20187_20186_TL_SRV_Stationary_Stock_Transact] ON [TL_SRV_Stationary_Stock_Transaction] ([SerialNo],[StationaryStatus]) GO
CREATE INDEX [NCIX_20189_20188_TL_SRV_Stationary_Stock_Transact] ON [TL_SRV_Stationary_Stock_Transaction] ([StationaryStatus]) INCLUDE ([SerialNo]) GO
[Code] ....
Should I create all indexes above or use minimum number of indexes which covers all columns as mentioned in above create index statements?
Including Columns With SQL Server Allow Nulls Checked
Jun 13, 2006Why is it that when I include a column from my SQL Server database table, which has it's Allow Nulls checked, in the data source of a control that the record becomes not update-able? How do I get around this?
View 1 Replies View RelatedMultiple Columns Index/Key (does It Free Me From Creating A Single Column Indexes???)
Apr 12, 2007I hope i'm in the right place, but thanks anyway....
Actually i have 2 questions (regarding sql-server Indices/Keys):
1) I have an index, which is consisted of 4 columns.
I've read elsewhere that this index functions (as well) as an index (single column
index) on the first column of this multi-column index.
Does this mean that if i'd like to have (in addition) Indices on all of the 4 columns
seperately i need to define only 3???
2) I have a unique key consisted of multiple columns.
I'd like to save an index to this combination of columns as well (to speed up
things in DB...).
Does the definition of a multiple-columns key free me from defining the multiple-
columns index???
can anyone explain the main diference between Keys and Indices???
Multiple Columns Index/Key (does It Free Me From Creating A Single Column Indexes???)
Apr 16, 2007I hope i'm in the right place, but thanks anyway....
Actually i have 2 questions (regarding sql-server Indices/Keys):
1) I have an index, which is consisted of 4 columns.
I've read elsewhere that this index functions (as well) as an index (single column
index) on the first column of this multi-column index.
Does this mean that if i'd like to have (in addition) Indices on all of the 4 columns
seperately i need to define only 3???
2) I have a unique key consisted of multiple columns.
I'd like to save an index to this combination of columns as well (to speed up
things in DB...).
Does the definition of a multiple-columns key free me from defining the multiple-
columns index???
can anyone explain the main diference between Keys and Indices???
thanks,
Ran Kizi
SQL Server 2014 :: Creating A Table With Updatable Columns And Read-only Columns
May 26, 2015Here is My requirement, I'm not sure if this is possible. Creating table called master like col1, col2 col3, col4 , col5 ...Where Col1, col2 are updatable - this can be done easily
Col3, col4 are columns in another table but these can be just a read only ?? Is this possible ? this is possible with View but not friendly with share point CRUD...Col 5 is a computed column of col 2 and col5 ? if above step can be done then sure this can be done I guess.
SQL Server 2008 :: Cluster Index Key Value
Sep 24, 2015I have a table which has cluster index on col1 column. If i insert 10 into my table what would be cluster index key value?Is it going to be 10 as well? How do i get cluster index key value?
View 5 Replies View RelatedSQL Server 2008 :: Changing The Clustered Index?
Feb 27, 2015After reading some comments here I decided to look at tables to see if any had a clustered index that was a unique identifier. Yep. So if I have a table with a unique identifier as the primary key/clustered index and an identity column that is indexed, I would like to make the identity a clustered index (maybe even the primary key) and make the unique identifier a unique non-clustered index (not the primary key).
Does this sound reasonable?If I do this will I need to drop and recreate the other indexes? Or maybe just rebuild the other indexes?
Currently:
CREATE TABLE Payments (
IDX INT IDENTITY(1,1) NOT NULL,
GUID UNIQUEIDENTIFIER NOT NULL DEFAULT(NEWID()),
.....
-- many other columns
);
GO
ALTER TABLE [dbo].[PAYMENTS] ADD CONSTRAINT [PK_PAYMENTS_GID] PRIMARY KEY CLUSTERED ([GUID] ASC);
GO
CREATE NONCLUSTERED INDEX [IX_Payments_ID] ON [dbo].[PAYMENTS] ([IDX] ASC);
GO
Would like:
ALTER TABLE [dbo].[PAYMENTS] ADD CONSTRAINT [PK_PAYMENTS_IDX] PRIMARY KEY CLUSTERED (IDX ASC);
GO
CREATE UNIQUE NONCLUSTERED INDEX [IX_Payments_GUID] ON [dbo].[PAYMENTS] (GUID ASC);
GO
SQL Server 2008 :: Index Alignment In Partitioning?
Apr 1, 2015I've yet to use partitioning in a production environment, and pretty much last ran any partitioning related code a few years back when looking at certification; so I'm definitely not an expert on the matter and only loosely clued up on the concepts.
I've recently started with a new employer, and they have just implemented a new system for sms messaging. The database tables tracking the sms messages being sent are going to get big and so they have created decided to implement partitioning on some of the tables using a partition scheme on the CreatedDate column; the DBA involved in designing the partitioning has left and I'm picking this up.
The relevant DDL for the table is below:-
CREATE TABLE [Message].[Sms](
[SmsId] [bigint] IDENTITY(250000001,1) NOT NULL,
[CreatedDate] [datetime] NOT NULL CONSTRAINT [DF_Sms:CreatedDate] DEFAULT (getdate()),
CONSTRAINT [PK_Sms:SmsId] PRIMARY KEY NONCLUSTERED
[code]....
There are some issues with the above that I will be addressing seperately (e.g. the clustered index should be unique as it contians the unique key, and the fillfactors are daft), but my concerns for this post are below.
1) How to define the Primary Key and enforce it's uniqueness whilst trying to ensure it's aligned with the partition in order to be able to switch out old data once an as yet undefined retention period has passed. In books online it states:- "If it is not possible for the partitioning column to be included in the unique key, you must use a DML trigger instead to enforce uniqueness. " Books online - Special Guidelines for Partitioned Indexes. However, I'm not sure what this means, nor how I create the primary key to use the partition function seeing as it doesn't have the CreatedDate in the unique key?
2) The original partition function was envisaged as the following:-
CREATE PARTITION FUNCTION [DateFunction](datetime) AS RANGE
LEFT FOR VALUES (N'2014-01-01T00:00:00.000'
, N'2014-04-01T00:00:00.000'
, N'2014-07-01T00:00:00.000'
, N'2014-10-01T00:00:00.000'
, N'2015-01-01T00:00:00.000'
, N'2015-04-01T00:00:00.000'
, N'2015-04-02T00:00:00.000'
, N'2015-04-03T00:00:00.000'
, N'2015-04-04T00:00:00.000'
, N'2015-04-05T00:00:00.000')
GO
There is a procedure that has been created and scheduled daily that will create a new partition for each day, and then merge these together at the end of the quarter. My understanding of partitioning is that this is a bad idea, as it will result in merging several populated partitions together. Is my understanding correct? If so, I'm planning on removing the day partitions at the end of the function, and simply adding quarterly partitions, maintaining a spare empty partition at the end of the table. Would this make more sense?
SQL Server 2008 :: Index Fragmented Quickly
Apr 8, 2015I just did index defragmentation for some databases include MSDB . I notice there are 3 indexes from MSDB database that fragmented quickly ( I did rebuild last nite at 10 PM - > fragmentation level becomes zero but today at 9 am it become 80 % ).The indexes are backupsetuuid, backup media family uuid, backupmediasetuuid. I am thinking to set the fill factor for those indexes = 80 respectively.
View 6 Replies View RelatedSQL Server 2008 :: Index Changes In Production And Baseline
Jul 1, 2015We are adding 4-5 indexes to one database and dropping 2 unused indexes. I don't have proper testing environment. How to monitor these indexes changes? Do we need to run any baseline but we don't get load all the time same load all the days
View 8 Replies View RelatedSQL Server 2008 :: Creating Tables From ERD
Mar 3, 2015I need to write create table statements for the er diagram that I attached. I am new to sql and I have trouble integrating foreign keys with these bigger er diagrams.
These are the tables I need to create:
Create Table Author(...)
Create Table Writes(...)
Create Table Book(...)
Create Table Copy(...)
Create Table Loan(...)
Create Table Customer(...)
SQL Server 2008 :: How To Know If A Table Has Non-unique Clustered Index
Oct 30, 2015Give a user table ‘MyTable’. How to know whether the table contains a non-unique clustered index by using SQL query?
View 2 Replies View RelatedSQL Server 2008 :: Creating And Transferring Permissions?
Mar 24, 2015I have existing domain users with SQL logins and having different set of permissions, we are migrating to new domain, and we have new user ID's with new domain. Is there any way through query I can create an user and copy the permissions.
View 0 Replies View RelatedSQL Server 2008 :: Creating New Category Name For Jobs
Jun 27, 2015I created 2 jobs under sql jobs. How to set up the custom category for my new jobs. It is going under uncategorized but I want to create DBA Monitor category.
View 1 Replies View RelatedSQL Server 2008 :: How To Delete Or Drop Index To Free Up Space
May 31, 2015I am new to mssql server. There is a table on one of my databases that occupies a lot of space. And the space usage is as follows: (all values in KB)
reserved: 42329064
data: 16272288
index: 26050032
unused: 6744
This table takes up almost 80% of my database size, and the information is this table just captures the time spent by a user on the website(not very critical data)
I would like to know how to delete the entire index (which is what is occupying most space) to free up disk space. the index is a clustered index.
SQL Server 2008 :: Newly Created Index And Execution Plan
Jun 17, 2015I run a query
select col1, col2, col3, col4
from Table
where col2=5
order by col1
I have a primary key on the column.The execution plan showing the clustered index scan cost 30% & sort cost 70%..When I run the query I got missing index hint on col2 with 95% impact.So I created the non clustered index on col2.The total executed time decreased by around 80ms but I didn't see any Index name that is using in the execution plan.After creating the index also I am seeing same execution plan
The execution plan showing the clustered index scan cost 30% & sort cost 70% but I can see the total time is reducing & Logical reads on that table is reducing.I am sure that index is useful but why there is no change in the execution plan?
SQL Server 2008 :: Put Clustered Index On 8 Column Natural Key Or On Identity Key
Aug 2, 2015I am extremely new to database design, and I ran into a problem that I know comes up often, however has many opinions...
Basically I have a table that is going to have 50+ columns. The natural key on this table is actually 8 columns wide, 4 of them being Varchar columns by default. (varchar(50)'s).
I have added an identity column, (1,1) to the table, however I put the clustered index on the 8 natural keys... My plan is to rebuild the clustered index once nightly when the system isn't in use (after 7 pm).
I know others would say it would be better to have the clustered key on the 1,1 column and then add indexes on the other 8 fields... However I don't quite understand why honestly...
Every single query against this table will use the 8 columns, and will NOT use the Identity column (1,1) because they are calls from other systems that do not know the Identity column....
Therefore if your database is set up for query speed, and every single query has to have a value for 8 columns to get a valid result, does it make sense to put a clustered index over the 8 columns?
If not why? Why is putting a clustered index on an identity column (that will literally never be used in a query) a better solution?
SQL Server 2008 :: Trapping Failing Index Rows Or Source
Oct 14, 2015that violates the targets referential integrity?I am getting error Msg 2601, Level 14, State 1, Line 1Cannot insert duplicate key row in object XXX with unique index YYY.The statement has been terminated.I would like to know if there is a way to examine or determine what source rows are not conforming to the unique index.I'm fine with dropping and reestablishing the index, and i know its cataloged somewhere because during index creation, the error message does tell you the row details clobbering index creation. Ideally i would like to be able to trap all the failing rows and see what i can do about rehabilitating them or ignoring them or managing them some other way, but id like to know what the server knows when it will not create the index.
View 2 Replies View RelatedSQL Server 2008 :: Creating Multiple Copies Of A Database
Mar 21, 2015I am creating a program that will take a master database and create separate databases for class room training.creating my own app to do this since it will have other stuff to do.i will have a master database that i will need to create multiple copies of. 2-20 copies, it is about 7GB large. it is used in a classroom training course for our company software. it will also copy a folder on the server onto multiple subfolders.each computer in the classroom will access its own copy of the database/windows folders.
What i am looking for is a fast/reliable way to create the multiple database copies. then when the training class is over and a new one is getting started, we will run my program to reset everything back to start.Should i detach/copy/attach or create a master backup and restore it 20 times. What kind of user access pitfalls will i need to look out for.
SQL Server 2008 :: Creating Primary Key On Temporary Table?
Apr 30, 2015Environment: Microsoft SQL Server Standard Edition (64-bit), 10.0.5520.0
I was doing a code review for another developer and came across this code:
CREATE TABLE dbo.#ABC
(
ReportRunTime DATETIME
,SourceID VARCHAR(3)
,VisitID VARCHAR(30)
,BaseID VARCHAR(25)
[Code] ....
This EXECUTES with no error or warning message.However, if I change this to CREATE the PK in an ALTER TABLE statement, I get the (expected by me) error:
CREATE TABLE dbo.#ABC
(
ReportRunTime DATETIME
,SourceID VARCHAR(3)
,VisitID VARCHAR(30)
,BaseID VARCHAR(25)
,OccurrenceSeqID INT
[code]...
==> Msg 8111, Level 16, State 1, Line 17 Cannot define PRIMARY KEY constraint on nullable column in table '#ABC'.
==> Msg 1750, Level 16, State 0, Line 17 Could not create constraint. See previous errors.
(note: As the #ABC table is an actual copy of a few of the columns in a "permanent" table, I will likely change the definition as follows such that the columns are defined to match the names / datatypes / NULLability:
SELECT TOP 0
CAST('01-01-1980' AS DATETIME) AS [ReportRunTime]
,SourceID
,VisitID
,BaseID
,OccurrenceSeqID
[Code] .....
SQL Server 2008 :: Getting Error While Creating Linked Servers
Sep 15, 2015Below is the syntax I am using for creating Linked server from SQL Server i.e windows 2008 R2 standard to Postresql database running on Linux 32 bit Debian (Linux turtle 3.2.0-4-686-pae #1 SMP Debian 3.2.46-1+deb7u1 i686 GNU/Linux) and the version of Postresql is 8.3
/****** Object: LinkedServer [HGCDEV] Script Date: 09/15/2015 17:03:37 ******/
EXEC master.dbo.sp_addlinkedserver @server = N'HGCDEV', @srvproduct=N'', @provider=N'MSDASQL', @datasrc=N'172.16.20.159',@provstr=N'UID=web;PWD=dev123'
/* For security reasons the linked server remote logins password is changed with ######## */
EXEC master.dbo.sp_addlinkedsrvlogin @rmtsrvname=N'HGCDEV',@useself=N'False',@locallogin=NULL,@rmtuser='web',@rmtpassword='dev123'
This the error I am getting " Cannot initializee the data source object of OLE DB provider "MSDASQL" for linked server "HGCDEV".
How to setup the linked server........... Below are the drivers installed on the SQL server
PostgreSQL35W
PostgreSQL30
SQL Server 2008 :: Estimate Forecast Space For Non-clustered Index On A Table
Apr 22, 2015What is the best way to forecastestimate space for non-clustered index on a table?
Example :
Table name : Test123
Row : 170000000
Reserved : 18000000 KB
Data : 70000000 KB
Index: 40000000 KB
Note: Test123 already has clustered index and 2 non clustered indexes.
SQL Server 2008 :: Execution Plan Ignoring Index Insisting On Key Lookup
Sep 15, 2015I have query with an expensive Key Lookup on a joined table. The predicate is the column that I'm joining on, and the output list contains two columns from the joined table.
I've created a basic non-clustered index covering the predicate column and include-ing the two output columns. However, the execution plan ignores this, and insists on using the primary key of the joined table to do the expensive key lookup. I've tried adding the included columns to the index directly and there's no change. I've also tried running dbcc freeproccache and no change.
SQL Server 2008 :: Creating Rows Between Dates In Single Statement
Apr 21, 2015I am trying to find an easy way to create multiple of just two date in a single sql statement.
E.G.
A statement using the parameters
@StartDate = '2015-01-01'
@EndDate = '2015-01-05'
Ends up with rows:
'2015-01-01'
'2015-01-02'
'2015-01-03'
'2015-01-04'
'2015-01-05'
What would be the best way to do this ?
SQL Server 2008 :: Backup Device Creating Backups With A New Transaction Log For Each Day
Jun 19, 2015Having a lot of problems with backup device creating backups with a new transaction log for each day. This is causing the backups to grow way to fast. Seems to be random with our clients. Created new device backups but getting same problem. A manual backup selecting overwrite all existing backup sets will fix it. But starts the cycle all over again.
View 9 Replies View RelatedLanguage Error When Creating FULLTEXT INDEX By Using SQL Server 2005 Management Express!
Apr 12, 2007Hello..
When I used Microsoft SQL Server 2005 Management Studio Express to Create FULL TEXT INDEX by this code:
CREATE FULLTEXT INDEX ON txtfilestbl(txtfile) KEY INDEX PK_txtfilestbl ON ForumsArchiveLibCtlg WITH CHANGE_TRACKING AUTO
It returns this ERR MSG:
Informational: No full-text supported languages found.
Informational: No full-text supported languages found.
Msg 7680, Level 16, State 1, Line 1
Default full-text index language is not a language supported by full-text search.
I Use same this code to create FULL TEXT INDEX by using Microsoft SQL Server 2005 Management Studio, and it was working properly.
What I have to do?
SQL Server 2008 :: Does List Of Page IDs Allocated For A Table Change During Index Rebuilds
Jul 16, 2015We noticed a deadlock 3-4 weeks ago on a table (table1) and deadlock graph was captured.
When I am analyzing the deadlock graph, page number using DBCC PAGE, I am getting the object id for a different table (table2). But deadlock graph shows the name of the object as table1.
Is it possible that subsequent defragmentation of indexes would have caused the respective page id to got re-allocated to a different table? I checked the deadlock graph lately only after 3-4 weeks.
How Dose It Matter For The Non-clustered Index Key Columns And Included Columns?
Apr 24, 2007Hi, all experts here,
Thanks a lot for your kind attention.
As I am creating the non-clustered indexes for the tables, I dont quite understand how dose it really matter to put the columns in the index key columns or put them into the included columns of the index?
I am really confused about that and I am looking forward to hearing from you and thank you very much again for your advices and help.
With best regards,
Yours sincerely,
SQL Server 2008 :: Creating Multiple Charts Based Off Of Main Chart
Jun 4, 2015I have this main chart setup. It pulls data from a query based on the selected parameters.
I want to create multiple charts for every catagory in the result set.
On the main chart there is a catagory called "Missing".
I want a chart for this category to display when the main chart is loaded. So below the main chart it would show a chart for each of the categories on the main chart.
Basically this report returns information on a certain part number displaying its problem types. Then I want it to create other charts for each problem type displaying the problem sub-types.
SQL Server 2008 :: Using Decimal Columns In SUM Function
Jul 21, 2015Recently I have come across a requirement where i need to design a table.
There are some columns in table like below with DECIMAL Datatype:
BldgLength
BldgHeight
BldgWeight
Based on my knowledge, i know that values before Floating-Point will not be more than 4 digits.
Now as per MSDN,
Precision => 1 - 9
Storage bytes => 5
so i can create column as:
BldgLengthDECIMAL(6,2) DEFAULT 0
OR
BldgLengthDECIMAL(9,2) DEFAULT 0
Now while reading some articles, i came to know that when we do some kind of operation like SUM Or Avg, on above column then result might be larger than current data type.
So some folks suggested me that i should keep some extra space/digits considering above MATH functions, to avoid an Arithmetic Over Flow error.
So my question is what should be value of DataType for above column ?
SQL Server 2008 :: Calculating Median Over 2 Columns?
Aug 13, 2015I have a database with 1million+ records in and i'm trying to collect the median values of column(2) for all distinct values in column (1)
Example DB:
Column 1 Column 2
978555 500
978555 502
978555 480
978555 490
978324 1111
978324 1102
978311 122
978311 120
978994 804
978320 359
and I need it to display on SELECT as
column 1 column 2
978555 495
978324 1106
978311 121
978994 804
978320 359
Is this possible on 2008 R2?