Question Relating To Table Size
Apr 9, 2008
Hi all,
I am still relatively new to the SQL world, and have just started looking at purging data from my databases which is older than 8 years old. I am using a routine from another forum on here to get a before Table size pre purge, and then running it again to get the new size after.
The thing i have found is that even though i have deleted over 1.5 million rows, there is actually no difference in the table size.
I have been looking at the UPDATE STATISTICS on the msdn web pages to see if i need to run this to update the information i am using for size comparisons, but it doesnt really tell me if this is one of the things that it updates, and was wondering if i was being dumb and missing something completely obvious here. The other thing i can think of is that even though the data has been deleted, the space has been retained in the indexes on the tables, and until i do a re-index i will not realise the space savings?
Many thanks in advance, and feel free to point and snigger if i have just missed something staring me in the face
Mark
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Aug 13, 2007
hi!
i have some what a definition table of the fields of the other table
name as DefinitionTable with data as follows
FieldType FieldName1 FieldDesc TxtColor FontStyle
8 FIELD1 ABC #1111 [fsbold]
8 FIELD2 CDE #2222 [fsitalic]
8 FIELD3 EFG #3333 [fsbold]
OrigTable
OrigKey FieldType FIELD1 FIEDL2 FIELD3 Results
1 8 test1 test2 test3 ok
so the e.g. FIELD1 is a data in DefinitionTable and a field name in OrigTable..
my problem is how to get the TxtColor in merging this table.. my sp in fetching the data but only the fielddescription is
create procedure Definition
@SearchKey int,
@FieldTypeint
as
begin
DECLARE @FieldName varchar(10),
@FieldDesc varchar(30),
@TextColor int,
@mysql varchar(4000)
SET NOCOUNT ON
SELECT @mysql = 'select o.origkey, '
DECLARE MyCursor CURSOR READ_ONLY FOR
SELECT FieldName1, FieldDesc FROM DefinitionTable
WHERE FieldType = @ResultType
Open MyCursor
FETCH NEXT FROM MyCursor INTO @FieldName, @FieldDesc
WHILE @@FETCH_STATUS = 0
BEGIN
select @mysql = @mysql + 'o.' + @FieldName + ' as ' + @FieldDesc + ', '
FETCH NEXT FROM MyCursor INTO @FieldName, @FieldDesc
END
CLOSE MyCursor
DEALLOCATE MyCursor
select @mysql = @mysql + ' o.results from OrigTable o where
FieldType = ' + @ResultType
execute(@mysql)
end
the result is Ok as
OrigKey ABC CDE EFG Result
8 test1 test2 test3 ok
But the problem is how to include the TxtColor or concatenate TxtColor with this output below
OrigKey ABC CDE EFG Result
8 test1+##1111 test2+#222 test3+#3333 ok
thanx,
mygt
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Jun 10, 2014
It is possible to find table size and in that table each row size.
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Mar 18, 2013
Is it possible to relate two tables (in the same db) using the PK (int) from one table to a UK (int, allownulls=No) from another?
I've tried, but had no success. Both tables are empty, so there is no way of having a null in the UK column that would prevent relating it to a PK. Just wanted to know if such relation is even possible before spending additional time on figuring out how to do it...
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Nov 29, 2006
Hi,
I am trying to relate two tables but both are from different databases. I have a database 'Current' which has a table 'case' and another database 'Org' which has a table 'employee'. I want to establish a one-to-many relationship between employee and case. I created a coulmn 'employee_key' in the case table & entered values matching the pkey of the employee table. Then I wrote a query using joins to access the table records.
select Org..employee.pkey, Current..case.assignedengineer, Current..case.pkey from Current..case join Org..employee on Current..request.employee_key=Org..employee.pkey
Although the above query works fine, there is no relation between the two tables of the two databases, I wanted to know if this is the right way to achieve what i want to or is there a way in which i can actually create a relationship between tables of two different datbases. Can anyone suggest/help???
Also, I wanted to know if i can relate 1 table of SQL Server db with another table of Oracle DB. Please help ...........
Thanks
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Nov 27, 2007
Hi,
I have couple of DBF files.. and when i get them into my scrub database the datatype for all the fields in char. but after i scrub the data i put them into a money feild.. so that if so that i can do any calculations that i want in the report...
Suppose if i keep as a char or varchar in my production database... is it possible to any calculation on it in my report.. just simple additions... and if yes... do i need to convert them into anything before doing the additions... The reason i am asking this is Some of the fields in the scrub database are empty and i want to keep them the same in my production database instead of showing 0.00 as a default.
Any help will be appreciated.
Regards
Karen
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May 9, 2008
hello experts
i have two sql select statements that selects data from two different tables. I want to concatenate these two sql queries into one singl query (through programming only not through joins). After concatenation i want to sent the single created query to my transection function so that it can select data from two different tables.
How can i acomplish this in vb .net or c#
thanks
fine regards
ali
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Jun 10, 2008
I am attempting to determine if a record for TODAY has been written. If one, I update it. If no records for TODAY have been created yet, I INSERT a new one. I am basing my "if" (C#) on a Select count(*) WHERE as shown below. My problem is that I do not know how to obtain the result. The debugger displays a -1 as the count and the IF falls through to its companion ELSE. Can anyone please set me straight? Oh, I build 'TestDate' from getdate and it ends up as a str like "6/10/2008". The Date column is also a varchar with the same kind of string as its contents.String fpsqlA = ("SELECT count(*) from DailyCounts WHERE Date = '"+testDate+ "'");
SqlCommand fpcmdA = new SqlCommand(fpsqlA, connStringDaily);fpcmdA.CommandType = CommandType.Text;
int iCount = fpcmdA.ExecuteNonQuery();SqlDataAdapter ad1 = new SqlDataAdapter(fpcmdA);
ad1.Fill(dtA);
//Test to see if a record for 'today' has already been written to the DailyCounts table. if (iCount <= 0)
{
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Mar 2, 2008
Hi,
i use this script that show me the size of each table and do the sum of all the table size.
SELECT
X.[name],
REPLACE(CONVERT(varchar, CONVERT(money, X.[rows]), 1), '.00', '') AS [rows],
REPLACE(CONVERT(varchar, CONVERT(money, X.[reserved]), 1), '.00', '') AS [reserved],
REPLACE(CONVERT(varchar, CONVERT(money, X.[data]), 1), '.00', '') AS [data],
REPLACE(CONVERT(varchar, CONVERT(money, X.[index_size]), 1), '.00', '') AS [index_size],
REPLACE(CONVERT(varchar, CONVERT(money, X.[unused]), 1), '.00', '') AS [unused]
FROM
(SELECT
CAST(object_name(id) AS varchar(50)) AS [name],
SUM(CASE WHEN indid < 2 THEN CONVERT(bigint, [rows]) END) AS [rows],
SUM(CONVERT(bigint, reserved)) * 8 AS reserved,
SUM(CONVERT(bigint, dpages)) * 8 AS data,
SUM(CONVERT(bigint, used) - CONVERT(bigint, dpages)) * 8 AS index_size,
SUM(CONVERT(bigint, reserved) - CONVERT(bigint, used)) * 8 AS unused
FROM sysindexes WITH (NOLOCK)
WHERE sysindexes.indid IN (0, 1, 255)
AND sysindexes.id > 100
AND object_name(sysindexes.id) <> 'dtproperties'
GROUP BY sysindexes.id WITH ROLLUP) AS X
ORDER BY X.[name]
the problem is that the sum of all tables is not the same size when i make a full database backup.
example of this is when i run this query against my database i see a sum of 111,899 KB that they are 111MB,but when
i do full backup to that database the size of this full backup is 1.5GB,why is that and where this size come from?
THX
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May 20, 2008
EDIT: Please skip over this and go to the 2nd post. After writing this, I realized it may be too complicated to comprehend, so I tried to simplify with another example which is found in the 2nd post. Or if you want you can read this one and try to understand it.
I would like to go over a design we came up with to handle a certain reporting requirement from an OLAP cube to see if this is a good approach. Also, I would like to hear about other designs that we can consider.
Here is the condensed version of the requirement.
We are measuring the performance of a bunch of portfolios. So among other dimensions, we have a portfolio dimension that holds the list of portfolios we are tracking. In a typical portfolio analysis, an analyst almost always looks at a portfolio's measures along side a benchmark portfolio's measures. A benchmark is another portfolio against which a selected portfolio is compared. So, for a given portfolio, there is a determined benchmark portfolio.
For example, an analyst might want to look at a measure called Annual_Yield for a portfolio called Portfolio_A. There will be an attribute on the member Portfolio_A that tells us what its benchark portfolio is. That attribute will basically be another member from the portfolio dimension. So, as a function of what an analyst chooses as the first portfolio (the subject portfolio), the cube should be smart enought to know what to select as the second portfolio (the benchmark portfolio).
To implement this, I am proposing the following structure for the table that will create the portfolio dimension.
PortfolioID, PortfolioName, Attr1, Attr2, ..., AttrN, BenchMarkID
1, Portfolio_A, blah, blah, ...., blah, 3
2, Porfolio_B, blah, blah, ...., blah, 3
3, Portfolio_C, blah, blah, ...., blah, null
4, Portfolio_D, blah, blah, ...., blah, 3
5, Portfolio_E, blah, blah, ...., blah, 6
6, Portfolio_F, blah, blah, ...., blah, null
So, the above data says that Portfolios A, B, and D uses Portfolio C as their benchmarks. And Portfolio E uses Portfolio F as its benchmark. Lastly, if a portfolio is used as a benchmark for other portfolios, then its BenchmarkID is null, meaning it doesn't get compared to anything, thus Portfolios C and F have null BenchmarkIDs. With this data, I would create a hierarchy in the portfolio dimension that has two levels. At the top level, there will be a portfolio and if that portfolio has a benchmark, then it will drill down to it.
With a portfolio dimension designed as such, I envision a fact table that looks like the following.
PortfolioID, SomeOtherDimIDs,....., Annual_Yield
1, , blah, ,....., 10%
2, , blah, ,....., 7%
3, , blah, ,....., 0%
4, , blah, ,....., 15%
5, , blah, ,....., 20%
6, , blah, ,....., 9%
So, going back to the original report which was looking at Annual_Yield by Portfolio_A, I would do an MDX statement such as
With Set [PortfolioAndBenchmark] As
DESCEDANTS(Portfolio_A)
Select
[Annual_Yield], [PortfolioAndBenchmark] On Columns,
Whatever Other Dimension On Rows
From
[Cube]
Does this make sense? The only concern I have is that I don't want the measures to aggregate along the portfolio hierarchy.
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Nov 23, 2007
Our mobile application using VS2005 with VB.net is ready and we are trying to set up the SQL CE on the server to test the remote connection procedures. Sql 2005 is based on a dedicated server and is accessed via the Web server which does not have Sql installed on it. We have installed the Sql Server Me Server Tools on the Web server and configured the Virtual directory with IIS. What we cannot get our heads around is how we link the database on the separate Sql server via the web server. When the Pda contacts the Web server via IIS we somehow need to redirect to the dedicated Sql server as it cannot be contacted outside of our network. We have been told that Sql Ce can link with an existing Sql 2005 database, how can we do this?
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Apr 2, 2006
I've been searching everywhere for a solution to this problem and no answers exist anywhere. When I try to create a new maintenance plan I get the following error. I've been told it may be related to SSIS but nobody has a solution. How do I fix this issue so I can create a maintenance plan.
Exception has been thrown by the target of an invocation. (mscorlib)
ADDITIONAL INFORMATION:
An OLE DB error 0x80004005 (Client unable to establish connection) occurred while enumerating packages. A SQL statement was issued
and failed.
An OLE DB error 0x80004005 (Client unable to establish connection) occurred while enumerating packages. A SQL statement was issued
and failed.
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Nov 18, 2015
I'm currently setting up a Tabular Model to do some research between several fact tables. Â In this example i have two fact tables (table 1 and table 2)Â which I've created a 1 to 1 relationship on phone number. Â Typically I create a relationship between these tables to find common data between the two. Â However, in this case I am trying to figure out the best way to model the data so that I can easily surface data from one table that does not exist in the other. Â I would liken this to a LEFT JOIN or a WHERE NOT EXISTS in SQL.
Table 1 has all of the data and Table 2 Only has a subset of the data from Table 1. Â What I'm trying to do here is display what attributes in Table 1 may play a part in records not existing in Table 2. What is the best way to model this?
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Sep 4, 2007
I am trying to resize a database initial log file from 500M to 2M. I€™m using€?
ALTER DATABASE <DBNAME> MODIFY FILE ( NAME = <DBLOGFILENAME, SIZE = 2 ) "
And I'm getting "MODIFY FILE failed. Specified size is less than current size." I tried going into the database properties and setting the log file to 2M, but it doesn€™t keep the changes.
Any help with this process?
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Mar 1, 2002
I have some question and would like ask experts:
The largest table in our database eats up above 4G . we do "sp_spaceused" for this table.The length of all columns of this table ( just int, char, varchar, money ,numeric fields types) is about 200 bytes, and the table has around 1,300,000 rows, but the reserved spaced for this table is 4,800,000kb and the data space is around 4,600,00kb.
How can average each row take 3.7kb ( the total size of all columns just 200 bytes)? Any other things I need check?
Any one can give any suggestion what cause this problem? or it is normal?
Thank you very much.
Judy
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May 18, 2001
Hello, Everyone,
Can anyone tell me how to find the size of a table in a DB?
Thanks,
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Nov 21, 2000
I'm trying to run a query or sp that will give me a
list of tables and the number of rows in it.
Is there any way for me to do this?
I appreciate the assistance.
Toni
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Dec 21, 1999
I am wondering if there is the limitation of maximum table size in SQL 6.5. I have a table with 2.6GB and 12,000,000 rows in SQL 6.5 database. Is this a problem?
TIA,
Stella Liu
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Jul 15, 1999
Is there a practical size limit, in MB's, of a table in SQL Server 6.5?
Is there a size, that once exceeded, degrades performance signifigantly?
I am speaking of raw megabytes. The table in question will consist of only 3 int columns but has the possiblity of becoming VERY LARGE (+1,000,000 rows). I am still in the design phase and can change my strategy if this will prove to be a problem.
Thanks for any help!
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Jan 14, 1999
hello all,
I am trying to solve this problem for quite some time.. I was wondering if I can get some help..
These questions are all abt. MSSQL 6.5
1. Is there a limit on the size of the table ?
2. Does it make sense to have more tables if the size of the row size is more that the limit set by 6.5 or i should let have more rows in a different table with duplicate entries for a particular field.
3. What is the number of rows before the performance of a query starts getting affected..
Thanks..
Sachin.
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Aug 26, 2002
I created a same table on two different server with same data. I run sp_sapceuse on both server and I got following result
it's useing 392 MB for table
name rows reserved data index_size unused
-------------------------------------------------------------------------------------------------------------------------------- ----------- ------------------ ------------------ ------------------ ------------------
DUNS_SITE 100000 401288 KB 400000 KB 1264 KB 24 KB
its using only 97.3 MB
name rows reserved data index_size unused
-------------------------------------------------------------------------------------------------------------------------------- ----------- ------------------ ------------------ ------------------ ------------------
DUNS_SITE 100000 99720 KB 99376 KB 328 KB 16 KB
WHY?????
Thanks
Manesh
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Jul 19, 2004
Hello,
How can i get the size of a table in sqserver 2000 ?
How can read a image field ?
Thanks for this answer.
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Mar 2, 2005
Is there a maximum or optimum number of rows I should have in a table so that I can have fastest search queries. I am a novice programmer just developed something for my work place.
The database has a table created by converting data from excel spreadsheets. There were 24 spreadsheets for 12 months each having approximately 500 rows. Designed this way the table will have approximately 24 * 500 = 12000 records. Should I consider redesigning the database to make searches faster
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May 25, 2006
Hi all,
How can I find the exact size in the disk occupied by a TABLE ?
When I execute "sp_spaceused" it returns the following parameters for a table
reserved
data
index_size
unused
Which of the parameters I should consider to calculate the exact space occupied by the table.
Thanks in advance,
Hari Haran Arulmozhi
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Jan 19, 2006
Is there any way I can find the size of each table?
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Jul 20, 2005
Is it better to have a table with 10,000 row or 10 tables of 100 rows?
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May 17, 2006
Hello,
If i want to know the size of table then how can i do it in SQL Server 2000 and in SQL Server 2005.
-- how much amount of data can a table store in sql.
-- On which thing the size of table depends.
or Can anyone give me a introduction about the size of table in sql
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Jul 10, 2006
Hi. I am trying to get a row count of each row of each table in the database. Is that possible? Using a SP or UDFS? I dont want the column size of each table but the total datasize of each row.So for example if I have 5 rows each in 3 tables I need a query that will return 15 rows with the size of each row(size of all coumn data summed together). Thanks.
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Jan 1, 2004
Been digging around, I want to query the size of a table (disc size)
Anything?
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Sep 15, 2004
Is there a way to get the size of a query of a table?
I know I can use DATALENGTH on every column in my query, but I thought there might be an easier way.
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Oct 30, 2004
is there an easy way to query the size of a table on disc?
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Feb 20, 2001
How do I find the average size of a row in a table? I need to calculate a row size in a number of tables, then sum those to find the average size of one record ( a hotel guest in this case), which includes entries in a dozen tables.
Thanks
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Mar 21, 2001
Hi all,
Is it possible to get the name and size of each index in a table? Please let me know.
Thanks in advance,
Praveena
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