I am using SQL Server2012. Is it possible to insert a new_column to table at 10th of it's column_index ? Ofcourse I can select, but I wish to insert at particular index...Is it possible? Alter table Table1 add New_Column varchar(20) at 10 ??????
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Dear All.
We had Teradata 4700 SMP. We have moved data from TD to MS_SQL SERVER 2003. records are 19.65 Millions.
table is >> Order_Dtl
Columns are:-
Client_ID varchar 10
Order_ID varchar 50
Order_Sub_ID decimal
.....
...
..
.
Pk is (ClientID+OrderId+OrderSubID)
Web Base application or PDA devices use to initiate the order from all over the country. The issue is this table is not Partioned but good HP with 30 GB RAM is installed. this is main table that receive 18,0000 hits or more. All brokers and users are using this table to see the status of their order.
The always search by OrderID, or ClientID or order_SubNo, or enter any two like (Client_ID+Order_Sub_ID) or any combination.
Query takes to much time when ever server receive more querys. some orther indexes are also created on the same table like (OrderDate, OrdCreate Date and Status)
My Question are:-
Q1. IF Person "A" query to DB on Client_ID, then what Index will use ? (If any one do Query on any two combination like Client_ID+Order_ID, So what index will be uesd.? How does MS-SQL SERVER deal with these kind of issues.?
Q2. If i create 3 more indexes on ClientID, ORderID and OrdersubID. will this improve the performance of query.if person "A" search record on orderNo so what index will be used. (Mind it their would be 3 seprate indexes for Each PK columns) and composite-Clustered index is also available.?
Q3. I want to check what indexes has been used? on what search?
Q4. How can i check what table was populated when, or last date of update (DML)?
My Limitation is i Dont Create a Partioned table. I dont have permission to do it.
In Teradata we had more than 4 tb record of CRM data with no issue. i am not new baby in db line but not expert in sql server 2003.
I am thank u to all who read or reply.
Arshad
Manager Database
Esoulconsultancy.com
(Teradata Master)
10g OCP
Hi,
Please, What s the differnce between a column that s a primary key and a column that s a "key/index with Isunique=true"?
Thanks a lot.
Hi,Would like to know the performance differenece between Multi-columnIndex vs Single Column Indexes. Let's say I have a table with col1,col2, col3 along with a primary key column and non-indexed columns.In queries, I will use col1, col2, and col3 together and some timesjust one or two of these three columns. My questions is, should Icreate one index contains col1, col2, and col3, or create 3 seperatedcolumns. I.e. each column has its own index. Any performancedifference?Thanks a lot.
View 1 Replies View RelatedHello everyone, I am new to ERWIN and I need helps from the experts outthere.We are using ERWin 4.1.2771 and have reversed engineered some MS SQLServer 2000 databases.The problem we are having is that we have a FK on a column to a tablewhere the PK of the referencing table is on another column (such as anidentity column). We have a unique index on the column in the PK tableand SQL Server allows you to build a FK reference even though thecolumn is not defined as the PK.Does anyone know how to create this type of FK within Erwin?Thank You
View 2 Replies View RelatedI have to create a table with a clustered PK on col1, col2, col3 and insert 5.6 million rows. There are only 2 other columns in the table. Does it matter if I create table, insert, create PK or create table with PK then insert?
View 3 Replies View RelatedClearly, a non clustered index can improve the performance of a SELECT statement. Is the same true with an INSERT statement? My contention is that the use of a non clustered index will hurt the performace of an insert statement.
Ideas??
for MS SQL 2000
the following will work if I want to have UNIQUE Users.Name >>
INSERT INTO [Users] (Name)
SELECT Names FROM OtherUsers
where OtherUsers.Names not in (select Name from Users)
but if I have an UNIQUE INDEX on Users
CREATE UNIQUE INDEX [IX_Users] ON [Users] ([Name],[Category]) ON [PRIMARY]
how can I do it ?
INSERT INTO [Users] (Name, Category)
SELECT Names,Categories FROM OtherUsers
where OtherUsers.Names + OtherUsers.Categories not in (select Name, Category from Users) ?
how can I insert it wih an index on 2 or 3 columns ?
thank you for helping
Hi, I am working on performance issues. We have a database defined as the following. And I would like to know why I am getting the clustered index insert in showplan in profiler for a query?
I have a table with field a,b,c,d,e,f,g,h,,etc. The primary key consists
of a combination of field a and field b, which is a clustered index and
unique.
There is a computed column that is defined as field k001 that
consists of field a and field b combined. This computed
column is not persisted. It is not defined as unique even though
it is unique.
There is another computed column that is defined as field k005 it
consists of field d,e,a,b combined in that order. It is not persisted.
It is also not defined as unique, even though it is unique.
There is a non-clustered index on field k001 called k001_c.
There is a non-clustered index on field k005 called k005_C.
The following cursor is declared.
EXEC SQL
DECLARE C_RANGE CURSOR FOR
SELECT "A"
,"B"
,"C"
,"D"
,"E"
,"F"
,"G"
,"H"
,"I"
,"J"
FROM "TABLE_TEST"
WITH (INDEX(K005_C))
WHERE "K005" >= :K1--AREA
AND "K005" <= :K2--AREA
ORDER BY "K005" ASC
END-EXEC
My question is this. This statement when looked at in profiler does a
clustered index insert when each row is fetched. It shows in the
showplan.xml that this has 60% of the cost involved.
I thought maybe this was because the columns were not persisted.
So I persisted these two columns, (by the way just for other information
there are other computed columns in this table that are not persisted,
and use some of the same original fields). I then defined a temp table
using the same table defination for the original table. I persisted the
two columns, then did a select into the temp table( with identity insert off).
I then deleted the original table, and renamed the temp table to the original table.
I seemed to still get the clustered index insert. I do not remember if
the cost showed up the same.
My question is this. Why am I getting the clustered index insert on
a query?
Thanks, Kathy
Is there a way to avoid entering column names in the excel template for me to create an excel file froma dynamic excel using openrowset.
I have teh following code but it works fien when column names are given ahead of time.
If I remove the column names from the template and just to Select * from the table and Select * from sheet1 then it tells me that column names donot match.
Server: Msg 213, Level 16, State 5, Line 1Insert Error: Column name or number of supplied values does not match table definition.
here is my code...
SET @sql1='select * from table1'SET @sql2='select * from table2'
IF @File_Name = '' Select @fn = 'C:Test1.xls' ELSE Select @fn = 'C:' + @File_Name + '.xls' -- FileCopy command string formation SELECT @Cmd = 'Copy C:TestTemplate1.xls ' + @fn
-- FielCopy command execution through Shell Command EXEC MASTER..XP_CMDSHELL @cmd, NO_OUTPUT -- Mentioning the OLEDB Rpovider and excel destination filename set @provider = 'Microsoft.Jet.OLEDB.4.0' set @ExcelString = 'Excel 8.0;HDR=yes;Database=' + @fn
exec('insert into OPENrowset(''' + @provider + ''',''' + @ExcelString + ''',''SELECT * FROM [Sheet1$]'') '+ @sql1 + '') exec('insert into OPENrowset(''' + @provider + ''',''' + @ExcelString + ''',''SELECT * FROM [Sheet2$]'') '+ @sql2 + ' ')
I get this message when doing an insert into :
Msg 2601, Level 14, State 1, Line 1
Cannot insert duplicate key row in object 'dbo.ElementLocalCharacterised' with unique index 'ElementLocalCharacterised_uq'.
The statement has been terminated.
Now my question is : does this error mean that all inserts are done, despite those where the unique key produced a conflict? Or does it mean that none of the inserts are done (all are rejected because at least one gave a conflict) ?
If the second is the case I would like to know if it is possible to execute the insert into in a way that all inserts are done despite those that raise a conflict?
Thanks a lot for any suggestion !
Regards,
Fabianus
my favorit hoster is ASPnix : www.aspnix.com !
I receive this message when I try to run any report. The reportserver and reportservertempdb databases were upgraded using backup/restore from SQL2000 to SQL2005 on a separate server which is running RS2005 . Please help. Thanks
View 1 Replies View RelatedI have a page that has a drop down control that is used to control the items in a FormView. The drop down is bound to one SQLDatasource while the FormView is bound to another SQLDataSource. I've got everything working great. Selecting an item in the drop down reveals the details in the form view. the Form can be opened for editing and deleting. I even have the Insert working. But there lies my problem. Once the Insert is executed I'd like to take the Index value of the recently submitted item and set it to the SelectedIndex of my dropdown. Here is the code for each of the SQL events Sub FormViewUpdated(ByVal sender As Object, ByVal e As FormViewUpdatedEventArgs) Handles FormView1.ItemUpdated
confirmation.Visible = True
confirmation.Text = "<img src=""../img/smiley36.gif""> Your record has been updated."
Dim index As Integer = Me.DropDownList1.SelectedIndex
DropDownList1.DataBind()
Me.DropDownList1.SelectedIndex = index
End Sub
Sub FormViewDeleted(ByVal sender As Object, ByVal e As FormViewDeletedEventArgs) Handles FormView1.ItemDeleted
confirmation.Visible = True
confirmation.Text = "<img src=""../img/smiley36.gif""> Your record has been deleted."
DropDownList1.DataBind()
FormView1.ChangeMode(FormViewMode.ReadOnly)
End Sub
Sub FormViewInserted(ByVal sender As Object, ByVal e As FormViewInsertedEventArgs) Handles FormView1.ItemInserted
confirmation.Visible = True
confirmation.Text = "<img src=""../img/smiley36.gif""> Your record has been inserted."
DropDownList1.DataBind()
End Sub
I would like to do something similar to the Updated event in the Inserted sub. Notice I have a Me.DropDownList.SelectedIndex bit...I'd like to be able to set a variable to the new ID and then set the Me.DropDownList.SelectedIndex to that variable. My stored proc for the Insert reads like
ALTER PROCEDURE dbo.usp_INSERTHelp_Faq
(
@FAQQuestion varchar(500),
@FAQText ntext,
@FAQIndex varchar(500),
@ModifiedBy int,
@Help_FAQID int OUTPUT
)
AS
INSERT INTO Help_FAQ (FAQQuestion, FAQText, FAQIndex,ModifiedBy, Views)
VALUES (@FAQQuestion,@FAQText,@FAQIndex,@ModifiedBy,0)
SELECT @Help_FaqID = @@Identity
RETURN
So, the Stored Proc is set up to return the latest ID. Also, my SQLDataSource for the FormView has an InsertParameter: <asp:Parameter Direction="Output" Name="Help_FAQID" Type="Int32" />
Any thoughts on how to close the loop here? How do I get my hands on the new Help_FAQID?
Hi,
I am making a program in Visual Basic .NET with SQL Server 2000.
I have a table "MyTable" with a primary key named "Id". The primary key is 'Create Unique' checked and 'Index' selected. When I insert all the fields required, except "Id" of course, I need the new record's "Id" in my VisualBasic program, but I don't know how...
I must do one of them, but don't know how either of them:
-Create a trigger on insertion that will send to the user that sended the insert command the "Id" of the record just created.
or
-get the command in Visual Basic that will send the Insert command with a return field ("Id")
Thanks in advance,
Sebastien Anselmo
how to reduce the cost of clustered index insert ?
View 8 Replies View RelatedI have a query which is primarily a victim of blocking and a blocker itself for other queries. I studied the plan for this and it shows a 42% cost on CI insert operation. The insert is happening on a table (Table A) that has a PK. This PK is not a running number. It is also a business key (primary key) in another master table (Table B).
My understanding is that the cost is heavy because -
1, this PK is not an incremental number. It could be any number not in a sequence.
2. while inserting into CI, there must be a scan happening to find out the location where the index will be inserted.
How can I reduce the cost?
1. Should I go for partitioning of this table Table A? I am trying to do this but I am not able to find any suitable partition key looking at the JOINS and filter clauses where this table is being used in the applicaiton.
2. Should I introduce a surrogate key (running number) as a primary key so that CI is faster ?
Hi,
MSSql2000: According to docs:
"Columns of type bit cannot have indexes on them"
Its impossible to define index on bit column using EM but ‘create index …’ command in QA is working and the index is created.
I understand why not to create index like this but … its valid or invalid operation to create index on BIT column ?
Thanks
i've these following table and data
tblCamera
TransID | BranchID | X | Y | TransDate
---------------------------------------------
1 | 12 | 90 | 76 | 3/12/2007
2 | 9 | 45 | 79 | 3/12/2007
3 | 12 | 69 | 34 | 3/12/2007
4 | 12 | 78 | 56 | 3/12/2007
5 | 9 | 67 | 35 | 3/12/2007
6 | 12 | 78 | 56 | 3/12/2007
*TransID is a primary key
tblBranch
BranchID | BranchName
--------------------------
9 | Kota Raja
10 | Kota Alam
11 | Kota Lama
12 | Kota Tua
13 | Kota Hantu
*BranchID is a primary key
Which column need to put an index? Can anyone show me the best way?
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 ?
Is there any advantage to doing this:ALTER TABLE testtable ADDCONSTRAINT PK_sysUserPRIMARY KEY NONCLUSTERED (UserID)WITH FILLFACTOR = 100,CONSTRAINT IX_sysUserUNIQUE NONCLUSTERED (UserID)WITH FILLFACTOR = 100GOover just having the primary key? Does having both an index and aprimary key add anything?thankschris
View 6 Replies View RelatedI have a table in which a non-primary key column has a unique index on it.
If I am inserting a record into this table with a duplicate column value for the indexed column, then what will be the error number of the error in above scenario? OR How could I find this out?
A column of a table has values in the format - 35106;#Grandbouche-Cropp, Amy.
I need to format the column data in such a way that only the text after # (Grandbouche-Cropp, Amy) remain in the column.
The text before ;# (35106) should be inserted in to another column of the same table.
Below is the table structure:
create table [HR_DEV_DM].[CFQ_TEST].sp_CFQ_Commercial_Referrals
(
ID int identity,
PromotionalCode nvarchar(4000),
QuoteNumber nvarchar(100),
CreatedBy nvarchar(100),
Created datetime,
ModifiedBy nvarchar(100),
Modified datetime,
CreatedBy_SalesRepSharePointID int,
ModifiedBy_ModBySharePointID int
)
Hi, I was wondering how I can complete a column (which doesnt have an input one) with data.
For example:
I have a sql query which bring data of 3 columns
ID | FISRT NAME | LAST NAME
1 MIKE MORGAN
2 SARA JOHANES
So, I will insert that data in a FLAT FILE CONNECTION MANAGER, which I configured with 3 columns and I did the corresponding mapping in the FLAT FILE DESTINTATION.
Now, If I add one more column in the FLAT FILE CONNECTION MANAGER, I will not have it mapped to a input one, obviously. So, what I need is to add one more column to the flat file destination and complete it with zeros values in it.
Probably I can solve this part by introducing a DERIVED COLUMN and there I can configure the zeros that I want to add to the column. But I'm not sure if I can do that without having a input column.
So, the question will be, how can I add one column to a flat file which doesnt have a input and introduce any value that I want to it?
Hope I was clear
Thanks for your help.
Beli
All,Just want to make sure that I understand what's going on here.I have a table with IGNORE_DUP_KEY set on a unique, multi-columnindex.What I'm seeing is this:1) When performing a BULK INSERT, the UNIQUE index is not beingrespected and rows which violate the unique index are inserted.2) When performing a regular INSERT, the UNIQUE index is beingrespected and rows which violate the unique index ARE NOT inserted.Is this expected behavior.Also, I have some questions, given the index described.Q1) Will a regular INSERT that attempts to insert duplicate data getan error back or just a warning?Q2) How can I set things up so that a BULK INSERT would NOT allowduplicates to be entered into the table?Thanks,Wes Gamble
View 2 Replies View RelatedThis is for SQL 2000 (SP 2) using Enterprise Manager. I have a table with a unique index comprised of several int fields. The index needs to include an additional bit field that is part of the table. But when I go to modify the index, the bit field name doesn't appear in the Column Name list.
Can anyone shed any light on the problem?
Thanks.
I have an non-clustered index defined on an identity column(statusid) on a table containing 200k rows. The query optimizer chooses to do a table scan when doing the following select. Why would this be.
SELECT * FROM STATUS
WHERE statusid = 10000
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 ?
Hi there,
My 'where' clause contains the following...
startdate <= @Date AND enddate > @Date
Should I put one index on 'startDate' and another on 'endDate' or should I have one index that covers both columns?
I don't know what the difference would be.
Cheers, XF.
Can I create an index on a variation of a column that isn't actually inthe table?I have a ParcelNumber column, with values like123 AB-67012345ABC 000-00-04012-345-67AP34567890The blanks and non-alphanumeric characters cause problems with users,because sometimes they're there, and sometimes they aren't. So I wouldlike to create an index based on this column, with the non-alphanumericcharacters squeezed out. Of course I can add such a column to thetable and index it, but I'm wondering if it can be done withoutactually adding the column.Thanks,Jim
View 6 Replies View RelatedIn an effort to improve the speed of queries against my main table,I'll be indexing a column whose data type is varchar(50).Would I be better off (better performance) if I changed the column'sdata type to some numeric type? I would have to update the column'sdata to accomodate this, but I would do it if this offers aperformance gain.-- Bill
View 6 Replies View RelatedI'm having a hard time getting one of my tables to use a non clustered index that I have on a DateTime column.
A sample version of the table is something like this
CREATE TABLE Appointments
(
ID INT NOT NULL,
AppointmentDate DateTime NOT NULL
)
with a clustered primary key on ID and a nonclustered key on AppointmentDate.
This production table has over 1million rows and the problem I have is this:
If I do a SELECT * FROM Appointments where AppointmentDate >= '20060701' AND AppointmentDate < '20060702' the Non clustered index on the AppointmentDate column works fine. i.e. I'm returning all appointments for the 1st of July.
Now if I run the exact same query using datetime parameters, a Clustered index scan is performed instead of an index seek.
DECLARE @AppDate DateTime
SET @AppDate = '20060701'
SELECT * FROM Appointments WHERE AppointmentDate >= @AppDate and AppointmentDate < DATEADD(day, 1, @AppDate)
Any ideas why it would do this?
please explain the differences btween this logical & phisicall operations that we can see therir graphical icons in execution plan tab in Management Studio
thank you in advance
I have 1 client who keeps running into the following error on the subscriber and merge agents >
€śCannot insert duplicate key row in object 'MSmerge_genhistory' with unique index 'unc1MSmerge_genhistory'.€?
Last time we got this error I ran a reindex on table MSmerge_genhistory on the publisher database, I then successfully generated a new snapshot and the subscribers started to synchronize again. This time around I keep getting the error even after I follow these steps (I also ran all the jobs to clean up replication). The last time I ran into this error I created a job to reindex msmerge_genhistory on a nightly bases in an effort to avoid this problem. Can somebody please provide me with a workaround and also the reason why this error occurs in the first place.
Thank you in advanced,
Pauly C