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
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Transact SQL :: Iterating Through A Schedule With Recursions And Factors?
Jul 30, 2015I have a scenario in which a schedule is recorded like the top table below. Notice the start and end times, the meeting length, and the fact that you could book more than 1 meeting (book factor) during the times slot. The second table is the result needed. I have it working using the dreaded cursor, but I know there's got to be a more elegant solutions.
empID
bookFactor
mtgLen
mtgStart
mtgEnd
1
2
15
7/1/2015 8:00
[code]....
Key Factors For Efficiency Of SQL Server 2000 (performace Tuning)
Apr 18, 2007Hello All,
I am new to SQL Server 2000. I am eager to learn what factors/parameters are key for obtaining good retrieval performance of SQL Server 2000 (prompt response to user query).
I recall that someone told me that a recordset with asOpenStatic cursor type has higher speed than that of a recordset with other cursor types.
Is this true or false. Are there really some key parameters for perfomance tuning .
Thanks
SQL 2012 :: Replaying Workloads With Minimal External Factors
Apr 8, 2014I'm currently working on a project at work to test the effects of database compression, trying to obtain measurable data on the impact of the compression on other server resources, and therefore whether the reduction in space used is worth the extra overhead. This has involved taking a trace of a production customer's workload for a period of time and replaying it against a backup using Distributed replay in synchronised mode.
I'm then taking a trace of that replay, as well as using perfmon to record useful data about the server, before and after compression is enabled. Finally, I'm loading the traces into a tool called Qure to analyse the impact of the compression on reads, writes, CPU, overall duration etc.
What I'm finding is that even across 2 different 'baseline' runs, which are replaying the exact same workload against the exact same database, performance etc differs to a significant enough degree that it calls into question the validity of the test. I can only put this down to the fact this server is on a VM, which is affecting available resources, which in turn affects execution plans the workload is generating and causes different replays of the same workload. I'm therefore looking at doing this on a standalone server, but I still can't be sure the differences will go away.
How to make tests such as this as similar as possible on multiple runs, when elements outside of SQL Server are in effect out of my control?
Factors Affecting Effort Estimate For SSIS Package
Aug 30, 2007Hi,
I need to estimate the effort required in writing some SSIS packages.
Could anyone provide some pointers to the various factors (E.g. number of tables, source, etc.) which influence the effort estimate for SSIS packages?
Thanks in advance.
Regards,
B@ns
Note: Font, FontSize, BoldText, ShowBox, Character Count And More Factors Needed For Calculation(s)?
Jul 17, 2007Situation: In this stored procedure, I have to calculate in some manner: Font, FontSize, BoldText, ShowBox and number of characters to see how many lines it will take on a Crystal Report. Wondering if you have seen some like this on Web or have an ideas? Measurements(length, width) and character count seem appropriate. How about a function?
Uses Arial and fontsize can be 8pt - 28pt.
Thanks. TAEG
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 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
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
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?
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();
}
}
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.
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
Analysis :: Calculated Member From Aggregate And Non-aggregate Factors
Sep 22, 2015I have 2 Dimensions in SSAS (see below end), I want to create a calculated member, named
This_Year_Billable_Objective_Count, with its formula = BillableLastYear*(100+ BillableObjective)/100.
The first factor, Â BillableLastYear is a number, aggregated (sum) from child units.
The second factor, Â BillableObjective is a percent number (for example 28 means 28%), it's not aggregate. It's an dependent value for each unit.
How can I calculate This_Year_Billable_Objective_Count for each unit?
\ able 1
SELECT [UnitKey]
   ,[UnitID]
   ,[UnitName]
   ,[Unit2Name]
   ,[Unit3Name]
   ,[Unit4Name]
[Code] .....
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.
Reporting Services :: Defining Oracle Query Parameters - Report Designer
Sep 16, 2011I am a beginner with Report Designer (and with Reporting Services). Following the tutorials 'Adding parameters to filter Reports ...' I tried using the @symbol to add a parameter to my query: where code = @code_value...I get the error: ORA -000936 missing expression (msorlib) Is there another syntax that I should use to define a parameter/variable in query for my oracle dataset?
View 4 Replies View RelatedDefining Report Datasets For Package Data From SQL Server Integration Services (SSIS)
Feb 22, 2008Hi,
I'm using SQL 2008 Februar CTP and trying to use SSIS for Data Source as described in http://msdn2.microsoft.com/en-us/library/ms159215(SQL.100).aspx.
I've created SSIS package and preformed steps described in http://msdn2.microsoft.com/en-us/library/ms345250(SQL.100).aspx (after fixing version to 10.0.0.0).
Now I got next error when trying to add SSIS DataSource (in Report Designer - Visual Studio):
Error messageThe data extension SSIS could not be loaded.
Please help.
Matej
A 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?
Defining Command,commandtype And Connectionstring For SELECT Command Is Not Similar To INSERT And UPDATE
Feb 23, 2007i am using visual web developer 2005 and SQL 2005 with VB as the code behindi am using INSERT command like this Dim test As New SqlDataSource() test.ConnectionString = ConfigurationManager.ConnectionStrings("DatabaseConnectionString1").ToString() test.InsertCommandType = SqlDataSourceCommandType.Text test.InsertCommand = "INSERT INTO try (roll,name, age, email) VALUES (@roll,@name, @age, @email) " test.InsertParameters.Add("roll", TextBox1.Text) test.InsertParameters.Add("name", TextBox2.Text) test.InsertParameters.Add("age", TextBox3.Text) test.InsertParameters.Add("email", TextBox4.Text) test.Insert() i am using UPDATE command like this Dim test As New SqlDataSource() test.ConnectionString = ConfigurationManager.ConnectionStrings("DatabaseConnectionString").ToString() test.UpdateCommandType = SqlDataSourceCommandType.Text test.UpdateCommand = "UPDATE try SET name = '" + myname + "' , age = '" + myage + "' , email = '" + myemail + "' WHERE roll 123 " test.Update()but i have to use the SELECT command like this which is completely different from INSERT and UPDATE commands Dim tblData As New Data.DataTable() Dim conn As New Data.SqlClient.SqlConnection("Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|Database.mdf;Integrated Security=True;User Instance=True") Dim Command As New Data.SqlClient.SqlCommand("SELECT * FROM try WHERE age = '100' ", conn) Dim da As New Data.SqlClient.SqlDataAdapter(Command) da.Fill(tblData) conn.Close() TextBox4.Text = tblData.Rows(1).Item("name").ToString() TextBox5.Text = tblData.Rows(1).Item("age").ToString() TextBox6.Text = tblData.Rows(1).Item("email").ToString() for INSERT and UPDATE commands defining the command,commandtype and connectionstring is samebut for the SELECT command it is completely different. why ?can i define the command,commandtype and connectionstring for SELECT command similar to INSERT and UPDATE ?if its possible how to do ?please help me
View 2 Replies View RelatedSQL 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] ....