What Are The Biggest Tables And Indexes?
Apr 17, 2008Is there any way to know which ones are the biggest (In Mb) tables and indexes in my database?
thanks
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What Are The Biggest Tables And Indexes?
Apr 17, 2008Is there any way to know which ones are the biggest (In Mb) tables and indexes in my database?
thanks
TABLES AND INDEXES
Jun 7, 2001How do I move a table (test1) to a physical file group, and the table(test1) indexes to another file group. One clustered index and 3 nonclustered indexes. Thanks!!!!
View 4 Replies View RelatedIndexes On Tables
Oct 9, 2001Hello List,
I've a customer table and It has two indexes only. But when I view from the query analyser it list ten indexes with the following name:
"_WA_Sys_status_01EAB64E"
I do not know, what does the above index does and i remember, I did not created that. When trying to drop that, It says, Its not an index. I dont know, what to do. Would somebody please advice me on this.
Thanks,
Indexes On Tables
Mar 17, 2006Hi,
Can someone point me to where I can find out if an SQL server table has an index ? I was in enterprise manager and brought up properties for any given table but was unable to find the information.
Thanks,
Jeff
How To Get The Second Biggest Number Using Sql Query?
Sep 20, 2007Hi,
Now I have a task to get the second biggest number using sql query. I know that we can get the biggest number using SQL very easily: select Max(NumColumn) from aTable.
For example, I have the following records:
NumColumn
1
2
3
4
10
11
18
If I use "select Max(NumColumn) from aTable", I will get the number: 18.
But I need to use SQL to the second biggest number: 11.
How to do that? Thanks.
Indexes On Related Tables...
Jun 17, 2007Hi,
I have 2 tables with this design: one has ArticleID as primary key and multiple other fields and one has GroupID as primary key and multiple other fields. Each article can belong in multiple groups so I created a new table called articleGroups with only 2 fields: ArticleID and GroupID to show the groups associated with each article. There is a relation between this table and each of the main 2 tables. My question is, in the articleGroup table, does it make any sense to create an Index on ArticleID, GroupID or both? Since the group is needed for each article the Groups will always be queried everytime the article is queried. So, I am not sure if an index is needed?
Thank you,
Regards,
Iulian
Trying To Select The Lower Biggest Recored
Aug 14, 2006Hi there ;
I've a photo viewer which shows the image based on a datetime QueryString. I've a couple of buttons like next, prev, last, .... .
in the "prev" for instance, i want to select the image with a datetime that is lower than the current image datetime, and is the biggest one of course.but i'm stuck in it!
By the way i use .net 2.0 & Sql 05 Express
thanks in advance
Selecting The Two Biggest Values Of A Field
Mar 13, 2006I need to do a SQL query based on the two biggest values of a field. PLS , what s the SQL syntax : select * from Table where PRICE ......Ex: if the values of the field PRICE are : 50, 40, 100, 30 and 150.The request should select the rows that have Price equal 100 or 120Thanks a lot for help
View 2 Replies View RelatedBiggest Hurdle While Implementating Replication
Apr 7, 2008Hi,
I wanted to know What is the biggest hurdle that i can faced while implementing replication?
Do let me know.
Thanks in advance.
-- Chetan
Selecting The Two Biggest Values Of A Field
Mar 13, 2006I need to do a SQL query based on the two biggest values of a field. PLS , what s the SQL syntax : select * from Table where PRICE ......
Ex: if the values of the field PRICE are : 50, 40, 100, 30 and 150.
The request should select the rows that have Price equal 100 or 120
Thanks a lot for help
How To Select The Biggest Five Values From Table
Dec 15, 2006as i stated in the subject i want to gather the biggest five records from the table with sql, how can i do that?
View 5 Replies View RelatedHow To List Tables,indexes,views Etc...
Jun 16, 2003Hi,
I want to list the table names in a database "mydev_db".What would be the query ?.
I want to run a similar query to find out the indexes,views,stored_procs etc.
Regards,
Copernicus
Changing Indexes In Replicated Tables
Dec 19, 2001I need to drop and recreate indexes in some of my tables that are currently been replicated. I am not sure how this will affect my ongoing replication. Will this cause a problem for me? Please help
Bright
How Much Space In A Db Is Available For Allocation To Tables And Indexes?
Nov 19, 2007I was trying to find out how much space is available in a 2000 db for allocation to tables and indexes. I am trying to find the amount of space that has to be used-up before another allocation is automatically made to the database. I looked at sp_spaceused but BOL is rather sketchy at defining what the numbers it returns really mean. Is the "unallocated space" the value I am looking for?
Thanks,
Michael
Should I Create Indexes On Views Or Tables
May 22, 2007I have a pretty large database that has tables that will contain millions of rows of records. I will predominantly be using Views just to select the data. (I will not be performing any updates or inserts). I propose creating indexes on the views. My question is - if I create indexes on my views, do I have to create them on the tables as well? Is it good practice to create indexes on tables by default even if I am not going to be performing select statements directly on my tables but via my indexed views? Any advice is appreciated.
Thanks
Ran
Alter Index For All Tables/indexes In A DB
Oct 22, 2007
In SQL Server 2000 one could DBReindex every index that exists in a given database. You can do the same in SQL Server 2005. But how can this be done with the new Alter Index command? It does not allow me to pass in a variable for the object. Any ideas on how to get this done in with Alter Index in 2005? Thanks!
This I can't get to work:
DECLARE
@TableName nvarchar(100)
SET @TableName = 'Account'
USE database;
GO
ALTER INDEX ALL ON @TableName
REBUILD
GO
USE RZTQ5OL02
DECLARE @TableName varchar(255)
DECLARE TableCursor CURSOR FOR
SELECT Name from sys.sysobjects where type = 'U'
OPEN TableCursor
FETCH NEXT FROM TableCursor INTO @TableName
WHILE @@FETCH_STATUS = 0
BEGIN
DBCC DBREINDEX(@TableName,' ',90)
FETCH NEXT FROM TableCursor INTO @TableName
END
CLOSE TableCursor
DEALLOCATE TableCursor
Placing Additional Indexes On System Tables
Apr 26, 2000Anyone know how to place additional indexes on system tables?
View 1 Replies View RelatedWhere Does Indexes Stored In The SQL Server System Tables
Nov 19, 1998hi, 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
Rebuilding Large Database Tables And Indexes
Jul 7, 2015I have come across a database system which isn't designed to work optimally. It is fairly large (~400GB) and performance of loading and querying is degrading (improper data types, fragmented indexes, non unique clustering key and other problems). So, I have quite a task in front of me, but I am up for the challenge. I figure this is not a unique situation, many of us would have come across this before. I have done this before too, but only for smaller databases, some of the operations here I expect to take a couple of hours or more to complete (depending on load/infrastructure speed etc, I know).
My plan is thus:
+ Take a full backup of the database
+ Set the recovery model of the DB to simple
+ Drop non clustered indexes
+ Drop clustered indexes
+ Remove PKs (wrong data types, too large!)
+ Narrow data types (add new column, update column in batches to old value, rename new column to old column)
+ Add PKs, which will create clustered indexes automatically based on PK ID
+ Create non clustered indexes
+ Run a SHRINKDB (normal operations I would never do this, but this is a special case, ensure log file is truncated to a logical size especially after all those table modifications...)
+ Set the recovery model of the DB to Full
+ Ensure everything works OK or better
Fastest Way To Copy Tables And Their Indexes Between Servers?
Nov 13, 2006The DTS Task Copy Server Objects is PAINFULLY slow.
The Copy Table Wizard is fast but generates an unmanagable DTS and does not bring over the indexes.
Any tips or tricks to copy tables, data and indexes and a reasonable speed?
Thanks,
Carl
Creating Indexes On Tables From The Database Explorer
Jan 16, 2006I would like to create an index on a table from the Database Explorer.
I am using Microsoft Visual C# 2005 Express Edition.
I downloaded Microsoft SQL Server Management Studio Express with the intention of using it to create an index, but it does not seem to find the database that I created from the Database Explorer.
Thanks!
I Need A Query To Find Indexes Names For Some Kind Of Tables
Apr 9, 2008Hi,
I need a query to get the index names of particular tables. for eg.. i have some tables like emp_data,emp_job....etc..Now i want to find all indexe names for those tablenames that starts with emp........ Plz help me...
SQL Server 2014 :: Memory Optimized Tables And Indexes
Feb 18, 2015I'm just beginning to experiment with memory optimised tables.
I have two sets of near identical tables - one set normal, the other set memory optimised with DURABILITY=SCHEMA_ONLY - and am running test queries against these. When I say that the two sets are "near identical", I mean that they are the same except for the primary keys: for the normal tables these are defined as PRIMARY KEY CLUSTERED whereas for the memory-optimed ones they are defined as PRIMARY KEY NONCLUSTERED HASH WITH (BUCKET_COUNT=nnnn) as per the requirements for such tables.
I then run a pair of test queries, again identical but one referencing the normal tables and the other referencing the memory optimised ones.
(The query uses an inner join on three tables with row counts of approx 3m rows, 100000 rows and 5000 rows.)
The query against the normal tables runs noticeably faster than that against the memory optimised ones. To try to find out why, I examined the execution plans. the plan for the memory optimised query suggests that I have a missing index: but of course I can't create this againsty a memory optimised table. Is this a bug or am I missing something? Why the performance between the two should be so different?
Sql2005 SSIS - Doesn't Transfer The PKs And Indexes Of Tables
Jul 23, 2007Hello,
I created ssis package to transfer tables from one DB to another.
However, I don't find the option where I can make that the transfer with the indexes and pks of the tables. in sql2000 I had this option.
appriciate your help.
Kubyustus
DB Engine :: How To Find List Of Indexes On Tables On Which Views Has Been Created
Aug 28, 2015The views are in XYZ production database and user needs the list of indexes on the tables on which the views has been created.
query to find list of indexes on the tables on which the views has been created.
SQL Server 2008 :: Update Statistics On Tables Of Database After Rebuild Indexes?
Nov 5, 2015If I rebuild some indexes that are above 30% of average fragmentation, should I after that update statistics?
Also, How can I see if I Need to update statistics^on the tables of my database?
Sliding Window Scenario For Shifting Partitions...do All Indexes Need To Be Built On The Staging Tables?
Oct 31, 2007Kimberly Tripp describes a recipe for switching partitions in and out, thru the use of staging tables, when it comes time to "slide the window" on a partitioned table. She says that the clustered index (on staging) must be the same as that chosen for the partitioned table itself but she doesnt discuss whether or not all of the non clustered indexes need to be the same too once the
ALTER TABLE Orders
SWITCH PARTITION 1
TO OrdersOctober2002
and
ALTER TABLE OrdersOctober2004
SWITCH TO Orders PARTITION 24
run. For the data being switched out, I wouldnt want to do anything extra. For the data being switched in, I'd like to understand if she is implying that all other indexes would be built automatically as a result of the 2nd ALTER statement?
Kimberly's article is at http://www.sqlskills.com/resources/Whitepapers/Partitioning%20in%20SQL%20Server%202005%20Beta%20II.htm#_Toc79339965
Removal Of Selected Indexes / Script Index Create For List Of Indexes
Jul 1, 2014I'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?
Creating Indexes On Columns That Are Foreign Keys To Primary Keys Of Other Tables
Jul 16, 2014what the best practice is for creating indexes on columns that are foreign keys to the primary keys of other tables. For example:
[Schools] [Students]
---------------- -----------------
| SchoolId PK|<-. | StudentId PK|
| SchoolName | '--| SchoolId |
---------------- | StudentName |
-----------------
The foreign key above is as:
ALTER TABLE [Students] WITH CHECK ADD CONSTRAINT [FK_Students_Schools]
FOREIGN KEY([SchoolId]) REFERENCES [Schools] ([SchoolId])
What kind of index would ensure best performance for INSERTs/UPDATEs, so that SQL Server can most efficiently check the FK constraints? Would it be simply:
CREATE INDEX IX_Students_SchlId ON Students (SchoolId)
Or
CREATE INDEX IX_Students_SchlId ON Students (SchoolId, StudentId)
In other words, what's best practice for adding an index which best supports a Foreign Key constraint?
Drop All Indexes In A Table, How To Drop All For User Tables In Database
Oct 9, 2006Hi,I found this SQL in the news group to drop indexs in a table. I need ascript that will drop all indexes in all user tables of a givendatabase:DECLARE @indexName NVARCHAR(128)DECLARE @dropIndexSql NVARCHAR(4000)DECLARE tableIndexes CURSOR FORSELECT name FROM sysindexesWHERE id = OBJECT_ID(N'F_BI_Registration_Tracking_Summary')AND indid 0AND indid < 255AND INDEXPROPERTY(id, name, 'IsStatistics') = 0OPEN tableIndexesFETCH NEXT FROM tableIndexes INTO @indexNameWHILE @@fetch_status = 0BEGINSET @dropIndexSql = N' DROP INDEXF_BI_Registration_Tracking_Summary.' + @indexNameEXEC sp_executesql @dropIndexSqlFETCH NEXT FROM tableIndexes INTO @indexNameENDCLOSE tableIndexesDEALLOCATE tableIndexesTIARob
View 2 Replies View RelatedA Question About Clustered Indexes Forcing Rebuild Of Non-clustered Indexes.
Sep 18, 2007So I'm reading http://www.sql-server-performance.com/tips/clustered_indexes_p2.aspx and I come across this:
When selecting a column to base your clustered index on, try to avoid columns that are frequently updated. Every time that a column used for a clustered index is modified, all of the non-clustered indexes must also be updated, creating additional overhead. [6.5, 7.0, 2000, 2005] Updated 3-5-2004
Does this mean if I have say a table called Item with a clustered index on a column in it called itemaddeddate, and several non-clustered indexes associated with that table, that if a record gets modified and it's itemaddeddate value changes, that ALL my indexes on that table will get rebuilt? Or is it referring to the table structure changing?
If so does this "pseudocode" example also cause this to occur:
sqlstring="select * from item where itemid=12345"
rs.open sqlstring, etc, etc, etc
rs.Fields("ItemName")="My New Item Name"
rs.Fields("ItemPrice")=1.00
rs.Update
Note I didn't explicitly change the value of rs.fields("ItemAddedDate")...does rs.Fields("ItemAddedDate")=rs.Fields("ItemAddedDate") occur implicitly, which would force the rebuild of all the non-clustered indexes?
SQL Server 2008 :: Logic To Rebuild Only Clustered Indexes / Skipping To Rebuild Non Clustered Indexes In Same Table
Jun 25, 2015I have a requirement to only rebuild the Clustered Indexes in the table ignoring the non clustered indexes as those are taken care of by the Clustered indexes.
In order to do that, I have taken the records based on the fragmentation %.
But unable to come up with a logic to only consider rebuilding the clustered indexes in the table.
create table #fragmentation
(
FragIndexId BigInt Identity(1,1),
--IDENTITY(int, 1, 1) AS FragIndexId,
DBNAME nvarchar(4000),
TableName nvarchar(4000),
[Code] ....