Spaced Used By Col In Index Page Is Total Length Of Col Or Data It Stores In It
Apr 9, 2015
i have one col in a nonclusted index which is bigint 8 bytes follwoing result shows min_record_size_in_bytes and max_record_size_in_bytes is 20 that is 12+8 page size is 8 kB. does that mean a record will use 20 bytes in a page or it will only use the space equalent to data stored in the col.what i have seen is page count is same weather i put some data in the col or null
select * From sys.dm_db_index_physical_stats(9,343,null,null,'DETAILED')
database_idobject_idindex_idpartition_numberindex_type_descalloc_unit_type_descindex_depthindex_
levelavg_fragmentation_in_percentfragment_countavg_fragment_size_in_pagespage_countavg_page_
space_used_in_percentrecord_countghost_record_countversion_ghost_record_countmin_
record_size_in_bytesmax_record_size_in_bytesavg_record_size_in_bytesforwarded_
record_countcompressed_page_count
999208304101HEAPIN_ROW_DATA102.9527559055118116253.187540514.196627131208358500016516516500
9992083041141NONCLUSTERED INDEXIN_ROW_DATA202553.21699.3544600938967585000202020NULL0
9992083041141NONCLUSTERED INDEXIN_ROW_DATA2101115.510254509513221600262626NULL0
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Jun 9, 2004
Does anyone know how I can determine the number of page writes that have been performed during a set period of time? I need to figure out the data churn in that time period.
TIA
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Oct 3, 2007
Folks:
I would like to know the total length of data type in a table. I ran the following query. Will this give me the correct information? I also ran sp_columns <table name> and it too give the length. But There is a difference in the numbers. Am I doing something wrong and which is the correct the query or sp_column.
select sum(length) from syscolumns
where id in (select id from sysobjects
where name = 'XYZABC')
sp_columns XYZABC
Thanks !
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Jun 24, 2014
I have a field Char(10) named bank, and another one Char(15) named namebank.
I need to create a TSQL query, but i need to preserve the white space on my first field named bank and concatenate with the other namebank, this last i dont need white space.
B001 Bank 123
How can accomplish this query.
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Mar 27, 2008
For those of you who would like to reference my exact issue, I'm dealing with the RSExecution SSIS package at the "Update Parameters" data flow task, at the Script Component.
The script tries to split parameter data into name and value. Unfortunately, I have several reports that are passing parameters that are very large. One example has over 65,000 characters all in the normal "¶mname=value&parm2=value..." format.
The code in the script works fine until it gets to one of these very large parameter sets. I have figured out what is causing the issue. Here's some code:
Dim paramBlob as Byte()
paramBlob = Row.BlobColumn.GetBlobData(0, Row.BlobColumn.Length)
The second parameter of the .GetBlobData function takes an INTEGER as its count! Therefore, no matter what kind of datatype I pass to the string that the script will later split, it will be limited to 32767 characters.
THIS IS A PROBLEM!!!
Does anyone know a workaround for this issue? I need all of the parameter data to be reported, and I would hate to have to skip over rows like this. Also, if I'm missing something, please fill me in!
Thanks for your help in advance,
LOSTlover
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Nov 28, 2006
Hello I have a project that uses a large number of MS Data access pages created in Access 2003 and runs on MS SQL2005.
When I am on lets say my client, (first page in a series) data access page and I have completed the fields in the (DAP), I am directing my users to the next step of the registration process by means of a hyperlink to another Data access page in the same web but in a linked or sometimes different table.
I need to pass data entered /created on the first page to the next page and populate the next page with some data from the first page / table. (like staying on the client name and ID when i go to the next page)
I also need the first data access page to open and display a blank or new record. Not an existing record. I will also be looking to creata a drop down box as a record selector.
Any pointers in the right direction would be appreciated.
I am some what new to data access pages so a walk through would be nice but anything you got is welcome. Thanks Peter€¦
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Jan 19, 2008
Hello,I need to learn where mssql server stores its data. I knew it was inProgram filesCommon filesBut I cant find.. Its urgent pls..Thanx
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Jul 24, 2007
hi,
in my report i have amount field. i want to display its total (sum) on each page..... i have tried runningvalue in tablefooter but it gives final total.......means grand total... i have also tried sum function in tablefooter & set repeateoneachpage = true but it gives same result.............. and i want pagewise totals...... anybody can help me...................
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Mar 21, 2007
DB design question
I have multiple tables with information about a user. The tables are Roles, Users, Groups and Profiles.
For a user session I need information from all those tables. Would it be better to make a table called UserSession and collect the necessary data from the above mentioned tables and stick them in one the UserSession table or should I just write a query that goes out and gets the data from the different tables.
What is better practice and what is faster?
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Nov 24, 2015
What is the reason behind Index key length limitation upto 900 bytes?
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Oct 22, 2007
Howdy all,
I have an Execute SQL Task that may return a result set. If it returns a result set, I'd like to log a failure in my package with the results visible.
I have logging turned on and that's working great. I've read about assigning results to a user variable of type Object and that's great. I can shred my results, thanks Jamie, with a Foreach loop no problem. Within that loop, I've got some VB that manipulates the values and will call Dts.Events.FireError as appropriate. However, VB is frowned upon here so my boss has asked that I push the VB logic into a Control Flow item.
I've built custom components already so I've got some familiarity with the process. Where I'm stuck at is figuring out _what_ the actual object type is in my code. The Connection manager is Native OLE DBSQL Native client. My Execute SQL Task uses a connection type of OLE DB with a Full result set. Results are stored in a variable named ErrorResultSet. Within the Execute method, I currently have this code set up in an attempt to pick apart the object and discover the available methods.
Code Block
Variables _variableCollection = null;
if (variableDispenser.Contains("ErrorResultSet"))
{
variableDispenser.LockForRead("ErrorResultSet");
}
variableDispenser.GetVariables(ref _variableCollection);
// Iterate through the variables that we were
// able to lock. Assigning values to entities as
// available.
foreach (Variable _en in _variableCollection)
{
switch (_en.Name)
{
case "ErrorResultSet":
Object _rs = _en.Value;
System.Type _type;
_type = _rs.GetType();
System.Data.DataSet _realResults;
_realResults = _rs as System.Data.DataSet;
// My expectation is that the cast of _realResults would
// not fail.
break;
}
}
// unlock before we go
_variableCollection.Unlock();
return DTSExecResult.Success;
At this point, my assumption is that the unboxed type of the recordset is not in the System.Data.DataSet inheritance chain as the cast failed. Anyone have insight into what it is? I can't seem to get any hits on google for what it's using behind the scenes in the Foreach ADO Enumerator.
Beyond the immediate question, anyone have thoughts on how else I can solve the problem? I had thought perhaps the task could raise an event if it returned rows but it didn't seem to have that functionality. Even if that had worked, telling the logging provider to capture the result set into the log might have been too much for native functionality. Another option I was thinking about would be to continue using the Enumerator and my custom component is a pure rewrite of the current Script task with the obvious downside being that I'd lose the generic-ness I was hoping to get with being able to hit my dataset.
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May 29, 2008
I'm seeing this error in my application log. Not quite sure how it started happening all of a sudden. I'm not quite sure where to start on this one.
Any suggestions greatly appreciated!
Thanks,
Mike123
Exception information:
Exception type: SqlException
Exception message: Operation failed. The index entry of length 1007 bytes for the index 'tblMessage25' exceeds the maximum length of 900 bytes.
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Aug 3, 2007
Hello,
I have report in which I have created groups base on the customer name. Can anybody please tell me how to get the total page counts for the individual group? I have page break after every new group and I am able to reset page count to 1 when new group start but I am getting the total number of pages for a particular group.
For ex, let say I have 4 groups, 1 group has 3 page, 2 group has 2 pages and 3 group has 6 page and 4th group has 7 pages I need something like,
For 1st group
'Page 1 of 3€™ when user click next page it should be 'Page 2 of 3' etc
Similarly for other groups as wll.
Thanks!
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Sep 26, 2006
I know how to reset the page numbers with each group, but how do you reset the total page number within each group.
EX. Code for page of total pages
="Page " & Globals.PageNumber & " of " & Globals.TotalPages
EX. Code to reset within a group
Custom Code:
Shared offset as Integer
Shared currentgroup as object
Public Function GetGroupPageNumber(group as Object, pagenumber as Integer) as Object
If not (group = currentgroup)
offset = pagenumber - 1
currentgroup= group
end if
return pagenumber - offset
end function
=Code.GetGroupPageNumber(ReportItems!Category.Value(grouping),Globals!PageNumber)
What I need is code for a combination of the two...to display code for page of total pages that resets within a group.
Any help is greatly appreciated.
Thanks!
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Aug 25, 2007
Hi everyone,Does exist an easy way to count the actually number of queries executed within a page?I've searched here and in google but found anything...Thanks in advance!
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Sep 17, 2007
I have a non-clustered index on a table. If I rebuild or reorganize it in SQL 2005, the total fragmentation percent reported by properties/fragmentation on the index stays at 33%.
Why doesn't the fragmentation go to 0% ?
If I totally drop/create the index, starts even higher, but beorg or rebuild simply goes to 33%. This even if using with use temp db for sort option.
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Jun 22, 2004
I have a table column like "First Name". How do I select that from the table.
It gives me an error if I write query:
select "First Name" from table1.
Any clues?
Thanks
Vinnie
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Jun 20, 2007
Hi,
I have requirement to display Total number of Rows in a Report in Page Header.
I have written the following code in Page header it shows RowCount for the Page only.
=Count(ReportItems!textboxInTableCell.Value)
Can anyone please help on this?
Regards
Raghav
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Feb 14, 2008
Friends,
I am using SSRS (Sql server reporting services) for one of my report related to EIS-MIS.
i want group wise page numbering and also display the no. of pages for that particular group.
e.g suppose group 1 has 5 pages then it should display
page no. 1 /5, 2/5,3/5,4/5, 5/5. now suppose group change then it shold display 1/4 like this
I have already implemented groupwise page numbering using then custom code and i have call that function from the header portion of the report.
now the question is how can i display the total no. of pages in particular group?
For that i have add one count column in query itself but as we know we can't use field value in header and footer portion and also we can't use global variables in data portion.
So kindly guide me
Thanks,
Manoj Patel
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Feb 8, 2001
Just upgraded from 6.5 to 7 and in query analyzer I get double spaced results on queries that previously single-spaced. Installed 2000 QA and still get same results. Is there a setting that we are missing or a workaround to this?
Note ==> The cursor query returns single spaced results when ran alone.
Test code below:
DECLARE @pol char(10)
DECLARE testcursor CURSOR FOR
SELECT policy_no FROM policy_history
WHERE policy_chg_end_dt is null and policy_deleted_sw = 0
OPEN testcursor
FETCH NEXT FROM testcursor INTO @pol
WHILE @@FETCH_STATUS <> -1
BEGIN
SELECT @pol
FETCH NEXT FROM testcursor INTO @pol
END
CLOSE testcursor
DEALLOCATE testcursor
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May 5, 2015
is it possible to separate Grand Total of a sub group to a new page?
I tried using advanced mode, find the first line the Grand Total section and set its "RepeatOnNewPage" to true, but, when I execute the report, it will throw an error something like the value of RepeatOnNewPage of the TablixMemeber must be the same as its previous object.
I need my report pages to separate by subGroup(SubGroupA, SubGroupB, A+BTotal).
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Jan 22, 2008
Hi
I have a table called "Jobs" on my SQL server. I have an access front end which connects to this as well as some access backend tables.
We have 30+ users on the system. There are 1000s of records in this "jobs" table.
For some reason, at certain points of the day all users are stopped from updating a group of records. No-one can update values in a clump of records. It is usually 10-20 records that are numerically together.
When i kick everyone off the system, and log back those particular records seem to be unlocked.
I can rule out permissions on the Jobs table. i am failry certain they have been set correctly.
To me it sounds like Page locking. Now i am new to SQL server. I am inheriting a recently created sql system.
But i notice there are multiple indexes formed on this JOBS table. I looked at one in particular. It is a "ClientName" field.. I noticed under this index > options...it says "Use Page locks when accessing the index".
Am i interpreting this right... But anyone searching under this field, will page lock on that table.
And...if my memory serves me right, "page locking" locks a group of all the nearest records?
Is this correct?
Does this sound like where my system is going wrong?
Thanks
Conor
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Nov 13, 2007
Hi there.
I'm trying to extract data from my SQL server & everything in the script I've got is working (extracting correct data) except for one field - which is for the most part it's off by +2 days (on a few occasions - I see it off by just +1 day or even +3, but it's usually the +2 days).
I'm told that it's due to the conversion formula - but - since SQL is not my native language, I'm at a bit of a loss.
The DB table has the date field stored as a type: CHAR (as opposed to 'DATE')
Can anyone out there help?
Please advise. Thanks.
Best.
K7
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Apr 17, 2005
I know the shortcut to 'defragging' the database to eliminate and
reclaim 'whitespace' in data and index pages is to setup a maintenance
plan. This doesn't work for me for two reasons:
1. I like to know how things work.
2. I can not create maintenance plans with my hosted provider.
I use the following T-SQL to rebuild all indexes on all tables:
-- exec sp_MSforeachtable "DBCC DBREINDEX ('?', ' ', 90)
But, does that not only address indexes? What about getting whitepace
back from data in tables themselves?
Am I over-thinking this?
When you're paying for SQL by the MB and generate a lot of data (with a
fair amount of churn) you want to keep it optimized and efficient,
right?
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Jul 23, 2005
I've just found a blocking lock occuring in a SQL Server.[color=blue]>From the waitresource, I found that the blocker has the following[/color]information:wait_info: PAGEIOLATCH_EXwait_resource: 14:1:564312And the blockee has the following information:wait_info: LCK_M_Swait_resource: KEY: 14:405576483:2 (7501a5aa8355)The problem is that I do not know which object is the blocker holding,for I understand that for a PAGE lock, it is in the format ofdatabase_id:file_id:page_idI know the db_id, the file_id but don't know how to map the page_id(564312) to a table/index in the database.Can somebody shed some lights on this? thks a lot.
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Jul 20, 2005
Hello,I not exactly sure how to determine the table when given the followinginformation:--Could not find the index for RID '999999' in index page('1:99999999'), index id ), database (whatever).--Can you someone tell how I use the system tables to determine whattable this index corresponds to? I'm assuming I used sysindexes andsysobjects somehow.Thanks in advance,JGB_DBA
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Dec 3, 2007
I am attempting to understand the behaviour of a nonclustered index in regards to page splitting.
If I had the following table:-
Col1, Col2, Value
This table has a Clustered index on Col1, Col2 and a NonClustered index on Col2 and include Col1, Values.
If inserts into Col1 were causing page splits in the Clustered index, what are the effects on the NonClustered index?
I am attempting to understand what happens to the NonClustered index in this scenario so that I can make a decision on what fillfactor to use.
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May 7, 2015
I have a report with multiple tables. I need to show each tables in different pages. When there is no data for tables/tables , it is coming with the next table which has data. I have given "Add a page break after" option in the tablix but still the tables are coming together when no data available. How can I show it in different page?
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May 22, 2006
I 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?
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Jan 25, 2008
Table A
5.6GB
80 million rows
Initial Page Space Used = 85.7% (sys.dm_db_index_physical_stats - avg_page_space_used_in_percent)
Index and data size are almost unchanged after an ONLINE rebuild of the clustered index. Page count actually goes up by 800. No fill factor or pad index settings. Page space used = 99.2%
During an OFFLINE rebuild the page count drops by ~20%. Page space used = 99.8%.
How can the pages be 99.2% used yet the number of pages hasn't gone done from the ONLINE rebuild?
I'm getting the feeling a shortcut was taken somewhere. Does an ONLINE rebuild only reorganize leaf level index pages but not any of the upper levels? Essentially it puts the pages in order but doesn't do any structure consolidation like OFFLINE?
It would seem that you're missing out on some of the benefits of defragmenting if your data is still spread across more pages and you don't get as many rows per read or it takes more reads to go down your tree to get to your data.
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Feb 27, 2008
Hi - I am pretty new to Reporting Services. I need to create a report where a single result row from the Select Statement populates an entire page of data. The regular grid or Matrix reports don't fit this need. Is there a simple way to do this?
Thanks - Dave
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Nov 27, 2007
Hi!
I've posted a feedback with Microsoft to see if we can get them to fix the issue described below, but so far no one from Microsoft has commented to let us know what they're doing about this problem! I'm posting this here to see if maybe we can get more people to rate this feedback or chime in on what a pain it is! Please feel free to add your own comments or how you had to work around this issue and whether or not you think this is something Microsoft should be addressing NOW.
https://connect.microsoft.com/SQLServer/feedback/ViewFeedback.aspx?FeedbackID=311679
Provide Individual Page Numbering per Group and Total Pages per Group
Currently in a Reporting Services report, you can't readily reset the page number for each group in a table, nor can you display the total number of pages per group. For example, if I'm printing invoices and each invoice is a separate group, I'd like to be able to print "Page 1 of 5" , "Page 2 of 5" etc. for the first invoice, then "Page 1 of 3" when the next invoice begins, and so on. This was easy in Crystal Reports. I realize that Crystal Reports has a two-pass process that enables that kind of pagination. However, this is REALLY important functionality that's just missing from Reporting Services and I'm hoping you'll provide it REALLY SOON! Yeah, I know there are work-arounds if you can know exactly how many rows of information there are on each page. But gosh! That's not practical, especially if you have second level groups inside the main group or text blocks in rows that can 'grow' to more than one line. I've read a couple of work-arounds, but none of them works correctly and consistently when more than one user is running the same report or when you print the report while you're looking at it on the screen. I still may need access to the overall report page number and the overall total number of pages, so don't get rid of that. It's just that if you're doing this already for the entire report, I don't see why you can't do it per group! Lots of people have been asking for this for years, and I don't understand why it hasn't been implemented.
I've read a few articles on this topic, but no one has come up with a decent work around. My theory is that Microsoft should be addressing this immediately. This is major functionality that's just plain missing from SSRS and should have been there from the start. If anyone from Microsoft can let us know what's going on with this issue or if anyone would like for me to clarify this further, feel free to let me know.
Thanks!
Karen
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Jun 10, 2015
I Have a table with #Sample like below
=================================
#Sample
id int,
SSN varchar(20),
State varchar(2)
Â
Sample Data:
ID SSN STATE
1 999-000-000 AB
2 979-000-000Â BC
3 995-000-000Â CD
=================================
We used filter logic based on the SSN & State.
We are passing these values through variables like
Declare @State varchar(2)
Declare @SSN varchar(20)
While run time these values are lets suppose @SSN = '999-000-000' & @State='ABC'
Now the Result is displayed with the state data Like 'AB' only.
Output: 1 999-000-000 AB
instead it should give system generated error.
Here I have 2 Questions:
1. Why it is taking 1st 2 Charecters?
2. Why it does not have any system generated for length?
I can do validation with Length function for these 2 variables however if have 100 variables then it should not feasible case. So, what is the reason behind?Â
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