Defining A Clustered Key
Sep 5, 2006SQL server 2000: I'm told I need to define a clustered key on an existing table Scores for the rows absID and revID.
what is the syntax for this? I'm looking online but not finding it.
thanks.
Dave
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DB Engine :: How To Convert Unique Clustered Index Into Clustered Primary Key To Use With Change Tracking
Sep 4, 2015We are going to use SQL Sever change tracking. The problem is that some of our tables, which are to be tracked, have no primary keys. There are only unique clustered indexes. The question is what is the best way to turn on change tracking for these tables in our circumstances.
View 4 Replies View RelatedDB Design :: Script To Create Table With Primary Key Non-clustered And Clustered Index
Aug 28, 2015I desire to have a clustered index on a column other than the Primary Key. I have a few junction tables that I may want to alter, create table, or ...
I have practiced with an example table that is not really a junction table. It is just a table I decided to use for practice. When I execute the script, it seems to do everything I expect. For instance, there are not any constraints but there are indexes. The PK is the correct column.
CREATE TABLE [dbo].[tblNotificationMgr](
[NotificationMgrKey] [int] IDENTITY(1,1) NOT NULL,
[ContactKey] [int] NOT NULL,
[EventTypeEnum] [tinyint] NOT NULL,
[code]....
Data Warehousing :: Difference Between Primary Key With Clustered And Non-clustered Index
Jul 19, 2013I have created two tables. table one has the following fields,
                     Id -> unique clustered index.
        table two has the following fields,
                     Tid -> unique clustered index
                     Id -> foreign key of table one(id).
Now I have created primary key for the table one column 'id'. It's created as "nonclustered, unique, primary key located on PRIMARY". Primary key create clustered index default. since unique clustered index existed in table one, it has created "Nonclustered primary key".
My Question is, What is the difference between "clustered, unique, primary key" and "nonclustered, unique, primary key"? Is there any performance impact between these?
Restore A Database On Clustered Server From A Non-clustered Backup File.
Aug 24, 2006Hello,
How do I restore a sql database that is on a clustered server from a sql database backup file that is on a non_clustered server?
Thanks,
Serey
Create Clustered Or Non-clustered Index On Large Table ( SQL Server 7 )
Jan 4, 2008I have large table with 10million records. I would like to create clustered or non-clustered index.
What is the quick way to create? I have tried once and it took more than 10 min.
please help.
Converting A Clustered Index On A PK Identity Field To Non-clustered
Sep 8, 2006Hi there, I have a table that has an IDENTITY column and it is the PK of this table. By default SQL Server creates a unique clustered index on the PK, but this isn't what I wanted. I want to make a regular unique index on the column so I can make a clustered index on a different column.
If I try to uncheck the Clustered index option in EM I get a dialog that says "Cannot convert a clustered index to a nonclustered index using the DROP_EXISTING option.". If I simply try to delete the index I get the following "An explicit DROP INDEX is not allowed on index 'index name'. It is being used for PRIMARY KEY constraint enforcement.
So do I have to drop the PK constraint now? How does that affect all the tables that have FK relationships to this table?
Thanks
SQL 2012 :: Remember Definitions Of Clustered And Non Clustered Indexes?
Nov 24, 2014What is the easiest way to remember the definitions of clustered and non clustered indexes.
View 9 Replies View RelatedData Warehousing :: Primary Key Has Both A Clustered And Non-clustered Constraint
Sep 30, 2015I have a really super slow stored proc that does something simple. it updates a table if certain values are received.
In looking at this the matching is done on the Primary Key, which is set as a Clustered index, looking further I have another constraint, that sets the same column to a Unique, Non-Clustered.
I am not sure why this was done, but it seems to be counter productive. I have read only references to Which one is better on a primary key, but not can their be both and if it is "Smart".
How To Alter A Non Clustered Primary Key Constraint To Clustered
Feb 26, 2008Hello,
I've a table with primary key defined as non-clusterd, now without dropping it can I modify the existing index to clustered through tsql as I had to write some migration script and in that script I wanna do this.
Thanks in Advance,
Rohit
Defining Key In VB
Mar 24, 2008Hi,I have a table with uniqueidentifier column as its primary key. If I insert a record into this table by defining the key of this record in VB code (Dim myId As Guid = Guid.NewGuid ... is it??), is it possible that I receive the primary key violation error since the new record has an id which is already exists in the table? Thanks in advance
View 5 Replies View RelatedDefining Alert
Aug 7, 2003if in response to an alert i have defined a job and this job is scheduled for 10.00 am daily, will this job execute daily or only in response to the alert?
also i have set notifications to my computer in alert as well as in job. buti get notification defined in job and not in alert. why is it so?
Defining Primary Key
Feb 1, 2008Hello
I have this 3 tables, Customer, Transaction and Book. Since a customer can buy the same book more than one time, I've defined Transaction_Nr as primary key of Transaction and put Customer_Nr and Book_Nr as foreign keys. So the layout is more or less like this :
Customer {Customer_Nr, Customer_Name}
Transaction {Transaction_Nr, Date, Book_Nr, Customer_Nr}
Book {Book_Nr, Book_Name}
So now my question is, would it have been better, to define Transaction_Nr, Book_Nr and Customer_Nr as a combined primary key or to leave Transaction_Nr alone ? What would be the difference ?
Thanks !
Defining Relationships
May 9, 2008How do I define a relationship using SQL Server Management Studio?
I can create a view and drag columns between tables easily enough. Is there a way to do this with tables and not views?
Any help appreciated.
Thx
Defining Complex Query ...
Feb 3, 2008Hi All,
I have two tables.First is CAT_TABLE_LIST ;FIELD_NAME OPPOSITE_NAME TBL_NAMEHeight (mm) COL_1 TBL_13Cylinder volume (cm³) COL_5 TBL_13Torgue (daN.m) COL_7 TBL_13Cylinder weight(kg) COL_13 TBL_13Pump Type COL_9 TBL_13Fuel Consumption Col_22 TBL_22Color Col_41 TBL_09--------------------------------------------------------------------Second is TBL_13 (there are a few tables for each distict value for CAT_TABLE_LIST.TBL_NAME column );STOCK_CODE COL_1 COL_5 COL_7 COL_13 COL_9FC-25 12,5 5 15.000 45 DP 75FT-45 27 9 40.000 35 DP 101--------------------------------------------------------------------the CAT_TABLE_LIST.TBL_NAME holds relevant table name and CAT_TABLE_LIST.OPPOSITE_NAME holds columns names of that relavant table.The issue is, the columns of relevant tables dynamicly created. I mean if i insert new row to CAT_TABLE_LIST like that;INSERT INTO CAT_TABLE_LIST ('Size(USA)','Col_77','TBL_13')the new column will created for TBL_13 ;ALTER TABLE TBL_13 ADD Col_77 VARCHAR(200)And if i delete a row from CAT_TABLE_LIST, in the same transaction the column will droped from relevant table, as followsDELETE CAT_TABLE_LIST WHERE TBL_NAME ='TBL_13' AND OPPOSITE_NAME='Col_77'goALTER TABLE TBL_13 DROP COLUMN Col_77--------
Expected select query result is (for TBL_NAME = 'TBL_13' AND STOCK_CODE ='FC-25' ) .....STOCK_CODE OPPOSITE_NAME FIELD_NAME VALUEFC-25 COL_1 Height (mm) 12,5FC-25 COL_5 Cylinder volume (cm³) 5FC-25 COL_7 Torgue (daN.m) 15.000FC-25 COL_13 Cylinder weight(kg) 45FC-25 COL_9 Pump Type DP 75------------------------------------------------------------------------------How can i get this result ?
Thanks in advance...
Defining A Select Command
May 17, 2006I'm trying to populate a DropDownList from my SQL database. I'm using C# 2005 and when I compile my code I get an error. Compiler Error Message: CS0103: The name 'myConnection' does not exist in the current context
using System;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class Default3 : System.Web.UI.Page
{
private string connectionString = WebConfigurationManager.ConnectionStrings["mewconsultingConnectionString"].ConnectionString;
protected void Page_Load(object sender, EventArgs e)
{
SqlCommand myCommand = new SqlCommand();
myCommand.Connection = myConnection;
myCommand.CommandText = "SELECT * FROM tblPau";
myConnection.Open();
SqlDataReader myReader;
myReader = myCommand.ExecuteReader();
myReader.Read(); // The first row in the result set is now available.
lstPau.Items.Add(myReader["PauSiteName"]);
myReader.Close();
myConnection.Close();
}
}
Key Factors For Defining Indexes.
Aug 21, 2004Hello,
Plz explain me what are the key factors or conditions one should consider while defining indexes on a field.
Regards,
Shailesh
Problems Defining An XML DataSource
Sep 27, 2007Hi there,
I'm trying to follow Lesson 1 for using XML Data in a Report here: http://msdn2.microsoft.com/en-us/library/ms345338.aspx
When I go to my local wsdl I see that the target namespace is:
http://schemas.microsoft.com/sqlserver/2005/06/30/reporting/reportingservices
I create my datasource to point to my local asmx and tested it by going directly to the URL which worked. I then create a dataset in my report which points to this datasource and has this as the query string:
<Query>
<SoapAction>http://schemas.microsoft.com/sqlserver/2005/06/30/reporting/reportingservices/ListChildren</SoapAction>
</Query>
I've created 2 parameters - Item (/) and Recursive (1).
When I try and execute the query, I get the following error:
An error occured while executing the query.
Error while reading xml response.
Error while reading xml response. (Microsoft.ReportingServices.DataExtensions)
Any help would be appreciated. Thanks.
Clustered/Non-clustered Indexes And B-Trees
Jan 31, 2005I would like to find information on Clustered and Non-clustered indexes and how B-trees are used. I know a clustered index is placed into a b-tree which makes sense for fast ordered searching. What data structure does a non-clustered index use and how? I tried to find info. on the web but couldn't get much detail...
View 3 Replies View RelatedClustered And Non Clustered Index On Same Columns
Nov 1, 2007I have a table<table1> with 804668 records primary on table1(col1,col2,col3,col4)
Have created non-clustered index on <table1>(col2,col3,col4),to solve a performance issue.(which is a join involving another table with 1.2 million records).Seems to be working great.
I want to know whether this will slow down,insert and update on the <table1>?
Defining A Query In A Table Adapter
Nov 26, 2007Now, I don't know if what I want to do is possible, but here goes. In the table I want to query, there is an "approval status" column, of type Int32. There are four approval levels, 1, 2, 3 and 4. What I want to set up is a query in the table adapter that can return all entries of one or more approval levels. In "raw" sql, I would do something like: SELECT * FROM facility_table WHERE (approved IN (1,2,3));What I want to do though, is to have the list of approval codes to be a parameter that I can pass to the table adapter query, so the where clause becomes "WHERE (approved IN (@approval))", and I pass a string with the list of approval codes. But the query designer doesn't want to cooperate with me, as it insists that "@approval" should be an int32.Any suggestions?
View 1 Replies View RelatedDefining Connections As Private Variables
Apr 7, 2006Is there any harm in defining a SqlConnection as a private class variable for a web page?Private SqlConnection cn = new SqlConnectection(ConfigurationManager.ConnectionStrings["MyString"].ConectionString);The connection is only opened in certain event handlers, and is closed right after use. It was always my understanding that creating the connection is not a big deal but opening the connection is. Is that correct?
View 1 Replies View RelatedDefining AS400 Linked Server
Jul 20, 2005Can anyone help me understand what it takes to define a Linked Serverconnection to an IBM eSeries (AS400)? Do I need Microsoft's SNA Serveror some other product or can I simply do it with the tools provided withSQL Server 2000?Any guidance would be very appreciated. Thanks.Farid
View 3 Replies View RelatedAutomatically Defining Primary Keys
Aug 13, 2007Hi,
I am new to SQL Server platform, i want to define primary keys automatically other than using an identity. For a table called indicator i want it primary keys to be like ind_001, ind_002, ind_003 and so on.
Can anybody help me on how to do this? I am new to this platform so i will appreciate it if suggestions are explained very clearly. Thank you
Query Defining Parameter Dropdowns Is Run Twice!
Jan 24, 2007I built a very simple report which uses a query to define the options in the parameter€™s dropdown. I used that same dataset to define the default for that parameter (meaning that it will just pick the first row from the dataset and use that as the default). When I run the report watching a Profiler trace on the SQL database, it runs that query twice. (Presumably, that€™s once to fill the dropdown list and once to figure out the default.) That seems silly to me since it is the same query that is the same dataset in Reporting Services. Is there any way around this? My parameter bar is rendering twice as slowly as it should be.
I've tested against SSRS 2005 SP1 and the CTP of SP2.
How To Use Value Of A Variable In Defining Data Type
Dec 14, 2007
HI Experts,
I have same table structures in two database and one master table which contains Table id, Table name,primary key, data type of primary key. i have to comapare
Tables in both tha database and as per result i have to do insert,update or delete.
for that i have written query :
DECLARE @rowcount_mastertable FLOAT
SET @rowcount_mastertable = (select count(*) from master_table)
DECLARE @TABLE_ID float,
@TABLE_NAME varchar (100),
@primary_key varchar (100),
@Primarykey_DATATYPE varchar (50),
DECLARE @COUNTER FLOAT
SET @COUNTER = 1
WHILE (@Counter <= @rowcount_mastertable)
Begin
SET @TABLE_NAME = (SELECT TABLE_NAME FROM MASTER_TABLE TABLE_ID = @COUNTER)
SET @primary_key = (SELECT primary_key FROM MASTER_TABLE WHERE TABLE_ID = @COUNTER)
SET @Primarykey_DATATYPE = (SELECT Primarykey_DATATYPE FROM MASTER_TABL WHERE TABLE_ID = @COUNTER)
--In below line i want to declare a variable and datatype should be same as what we got from master table so that i can use this @MAX_primary_key to fetch --max of primary key from table name where table id is 1
DECLARE @MAX_primary_key @Primarykey_DATATYPE
SELECT @MAX_primary_key = MAX(@primary_key) FROM @TABLE_NAME
WHERE TABLE_ID = @COUNTER
---But by running it i am getting error that "Incorrect syntax near '@Primarykey_DATATYPE'. and "Must declare the variable '@MAX_primary_key'.
Please suggest
Thanks in Advance
Simple Query Chooses Clustered Index Scan Instead Of Clustered Index Seek
Nov 14, 2006the query:
SELECT a.AssetGuid, a.Name, a.LocationGuid
FROM Asset a WHERE a.AssociationGuid IN (
SELECT ada.DataAssociationGuid FROM AssociationDataAssociation ada
WHERE ada.AssociationGuid = '568B40AD-5133-4237-9F3C-F8EA9D472662')
takes 30-60 seconds to run on my machine, due to a clustered index scan on our an index on asset [about half a million rows]. For this particular association less than 50 rows are returned.
expanding the inner select into a list of guids the query runs instantly:
SELECT a.AssetGuid, a.Name, a.LocationGuid
FROM Asset a WHERE a.AssociationGuid IN (
'0F9C1654-9FAC-45FC-9997-5EBDAD21A4B4',
'52C616C0-C4C5-45F4-B691-7FA83462CA34',
'C95A6669-D6D1-460A-BC2F-C0F6756A234D')
It runs instantly because of doing a clustered index seek [on the same index as the previous query] instead of a scan. The index in question IX_Asset_AssociationGuid is a nonclustered index on Asset.AssociationGuid.
The tables involved:
Asset, represents an asset. Primary key is AssetGuid, there is an index/FK on Asset.AssociationGuid. The asset table has 28 columns or so...
Association, kind of like a place, associations exist in a tree where one association can contain any number of child associations. Each association has a ParentAssociationGuid pointing to its parent. Only leaf associations contain assets.
AssociationDataAssociation, a table consisting of two columns, AssociationGuid, DataAssociationGuid. This is a table used to quickly find leaf associations [DataAssociationGuid] beneath a particular association [AssociationGuid]. In the above case the inner select () returns 3 rows.
I'd include .sqlplan files or screenshots, but I don't see a way to attach them.
I understand I can specify to use the index manually [and this also runs instantly], but for such a simple query it is peculiar it is necesscary. This is the query with the index specified manually:
SELECT a.AssetGuid, a.Name, a.LocationGuid
FROM Asset a WITH (INDEX (IX_Asset_AssociationGuid)) WHERE
a.AssociationGuid IN (
SELECT ada.DataAssociationGuid FROM AssociationDataAssociation ada
WHERE ada.AssociationGuid = '568B40AD-5133-4237-9F3C-F8EA9D472662')
To repeat/clarify my question, why might this not be doing a clustered index seek with the first query?
Help Needed -- Dynamically Defining Files In Connection Manager
Nov 12, 2007I am pretty new to SQL Server 2005 and SSIS. I am trying to dynamically load files into SQL Server 2005 using files/paths contained in tables. I have a key table in my SSIS package that defines which files should be processed, some default values that will be associated with each file (ie CompanyKey and PeriodKey) and the file path (see below for example):
CompanyKey
PeriodKey
ProcessFlag
FileName
2
61
FALSE
2005TB200501.xls
2
62
FALSE
2005TB200502.xls
2
63
FALSE
2005TB200503.xls
2
64
TRUE
2005TB200504.xls
2
65
TRUE
2005TB200505.xls
2
66
TRUE
2005TB200506.xls
2
67
TRUE
2005TB200507.xls
2
68
TRUE
2005TB200508.xls
2
69
TRUE
2005TB200509.xls
2
70
TRUE
2005TB200510.xls
2
71
TRUE
2005TB200511.xls
2
72
TRUE
2005TB200512.xls
The package I am developing is supposed to loop through this table checking for files with ProcessFlag = TRUE. For those files, it will load all of the records/columns (prefaced with the company and period keys) into a common table.
Do I have to manually create data sources for each file or is there a way to dynamically define the connection and process the connection?
Any assitance you could provide would be greatly appreciated!
Thanks.
Vik
Defining Custom Roles With Limited Access To SQL Objects
Jan 29, 2007Hi!
I'm assisting in the creation of a development enviroment with SQL Server 2005, and I need to assign some custom roles, in particular, a Stored Developer Role should be able to create, modify and execute Stored Procedures but they should not be able to alter tables or views, but should be able to retrieve/insert data from those tables.
I've tried with the default roles in 2005 to no avail.
Is there a relatively easy way to accomplish this with a database alredy populated with objects of both kinds? (SP's and Tables / Views)
Thanks!
Defining An Event Inside Of An Assembly =&&> UNSAFE (no Workarounds?)
Oct 20, 2006Can someone verify that an assembly containing an interface with an event definition, such as...
public interface A {
event EventHandler Foo;
}
... can never be loaded under SAFE or EXTERNAL_ACCESS ?
It appears that the compiler-generated add_xxx and remove_xxx have the MethodImpl(MethodImplOptions.Synchronized) attribute defined by default, and "Explicit synchronization is not allowed". The same limitation also applies to classes by default, although technically one is able to define the implementation directly (clearly not ideal).
Microsoft Sql Server Management Object--Getting Problem In Defining DataType
Mar 28, 2008Hiii
I am working on a application where I will upload my excel sheet.Then the application will read the header and will create a table to store the excel sheet.
When the excel sheet will be uploaded first it will read the header of the excel and will display it inside a gridview to choose which columns are to be created along with datatype.I am giving u a snapshot
Column Name
Select
Datatype
Group Code
Emp No
Mem code
Amount
So Here the user is selecting tha data type.So I am passing the data type to my functions.But while assigning the datatype I am getting error that can no convert from sting to Microsoft.SqlServer.Management.Smo.DataType.I am giving u the demo codeprivate void button1_Click(object sender, EventArgs e)
{ServerConnection objsvrconn = new ServerConnection();
objsvrconn.LoginSecure = false;objsvrconn.ServerInstance = "DEMO";
objsvrconn.Login = "sa";objsvrconn.Password = "sa";
Server objsvr;objsvr = new Server(objsvrconn);
//objsvr.ConnectionContext.Connect();Table tb = objsvr.Databases["Demo"].Tables["Temp"]; Column c = new Column(tb, "GrpCode");
DataType dt = new DataType();dt.SqlDataType =(DataType)"Varchar" ---I am getting the error here.It only accecept from a enum i.e Datatype.Typename but doesnot accept like this
dt.MaximumLength = 10;
c.DataType = dt;
tb.Columns.Add(c);
tb.Alter();
}
Please help me.
Reporting Services :: Defining Element-path Using Namespace Prefix?
Sep 28, 2015I have an XML file that some of the nodes are represented with a namespace prefix. I have found the "msdn" page where shows the possibility to filter using the Namespace Prefix, but I have not been successful at it.
View 4 Replies View RelatedDB Engine :: Defining MAX And MIN Server Memory Settings On 2 Node Cluster
Sep 29, 2015On first Node A: The server has 16 GB of physical RAM.Â
On second Node B: The server has 10 GB of physical RAM.
Now, this being Active Active, Node A can be clustered on failure onto Node B..Now reporting server is configured under these two nodes, with defined MAX and MIN server memory of 12 as MAX and 0 is min IN GB.Now with this setting on SQL whenever the cluster moves, such config make OS goes low on node for 10 GB.I am only left with option of switching this MAX and MIN to a default setting or is there any other alternative such as script which can change this setting accordingly when cluster moves to respective server.