Performing Mathematical Transcations With A Sql Server Database

Feb 20, 2008

Hi,
I would like to know if its possible to add/subtract/multiply/divide values between a cell in a database and a textbox/label on a web form? how would I go about doing this?
 
Also, I would like a number from a cell to appear in a label when a page first loads. How can I achieve this?


 

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SQL Server 2000 Deadlock Concurrent Select Transcations

Oct 14, 2007

There are a series of traces of transactions for essentially the same units of work. Each includes a retrieving the same table "Select" from the database. The first 4 transactions ran concurrently. The last one ran about 7 minutes later with no other concurrent transactions.

The elapsed times for the database accesses for each of the first 4 is significantly higher than the last one.
Can you think of any database optimazation that might improve this?


Are there any utilities available than can be used for stand-alone testing of SQL Server database performance?
E.G. they would measure response time for reading/writing large/small amounts of canned data once/multiple times with concurrent/nonconcurrent access.

SQL Server Database is on 2000.I am not sure about the ISOLATION level in the Java code.

Basically I am new to SQL Sever....Please ans the above questions and provide me the direction to proceed on these questions

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Linked Servers And Transcations

Feb 25, 2004

Hello

I'm trying to run an update on data in one SQL Server, based on data from another SQL Server (they're linked). It seemed to take forever, even with just one row in the table, so I tried making a dummy query that just printed some stuff on the screen. This also took forever, so I tried doing the same thing, but not as a transaction. Then it worked perfectly!

What is the problem with linked servers and transactions? Does anybody have an explanation as to why they can't be combined? Or even better, does anybody have a solution for combining them?

Thanks

Martin N Jensen

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More Questions On Try Catch W/transcations

Apr 10, 2008

Lets say that within a procedure, you start a transaction. Within the transaction there are three blocks of code, each surrounded by try/catch blocks. The first statement succeeds, but the 2nd fails and doesnt enter its catch block because for example it was inserting into a table that didnt exist at the time the procedure ran. So then, the engine will terminate the procedure and return, but there will still be a transaction open. How can you handle this situation?

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Ensuring Database Is Updated In Mobile Device When Performing Merging

Jul 24, 2007

Hi,

I am using web service to synchronize data between SQL Server 2005 on a desktop and a SQL Server Mobile Edition on a mobile device.

Initially, when i added the data source to my mobile application, my .sdf only has 3 records. I am then supposed to retrieve 97 more records from the desktop server when my mobile application runs. After performing merging, I clicked (on my device emulator) on the .sdf deployed under my mobile application and the query analyzer showed all 100 records.

Does this mean my mobile database has been successfully updated with all 100 records? If not, how do I check that? The reason why I am asking this is that the file size of this .sdf with 100 records is still the same as the initial .sdf with only 3 records. How is this possible?

Am I missing anything or getting some concepts wrong? Please enlighten. Thanks.

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Mathematical Query

Sep 28, 2007

how to round the exponential values.

for example my input is 8.14444367893246e-4

my expected output should be 8.14444367893246

how to achieve this?

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1 Log File Can Contain More Records After Performing Backup Database Statement, 2 Why Can't Insert Data When Is Log Is Not Full

Feb 14, 2008

question 1:

i found that database log file can contain more records after performing backup database statement.

for example:

i create a database and limit the log file to 2mb. then i create a table and insert data.

If i backup the database before i insert data , the database file can contain 192 records unitl the log file is full.


If i don't perform the 'backup database' statement.
The 'dbcc sqlperf(logspace)' indicate the utilization ratio is less than 40% after inserting 192 records

why?

I list my code:



Code Snippet
create database db_test
on primary
(
name=db_test,
filename='C:Program FilesMicrosoft SQL ServerMSSQL.1MSSQLDatadb_test.mdf'
)
log on
(
name=db_test_log,
filename='C:Program FilesMicrosoft SQL ServerMSSQL.1MSSQLDatadb_test_log.ldf',
maxsize=2mb
)
go
backup database db_test to disk='db_test.bak' --- if i don't execute this line, log file can contain a lot of record
go
create table db_test..table1(col char(8000))
--insert data to fill up the database log
declare @n int
set @n=0
while @n<192
begin
insert into db_test..table1 values(replicate('a',8000))
set @n=@n+1
end








question 2:
i create a database and limit the log file to 2mb. Then i create a table and insert data in an endless loop.

After the inserting operation executing for a while, the 9002 error occurs, indicate the log file for the database is full.
But the 'dbcc sqlperf(logspace)' command indicate the unilization ratio is low, and log_reuse_wait_desc in sys.database is 'CHECKPOINT'
And I can insert data , and i'm sure the state of log_use_wait_desc is 'CHECKPOINT'.


As i known, the checkpoint can't truncate log under full recovery model. Only the back log operation can truncate the transaction log.
So log is not full, why 9002 error is encounterd. and why the log_reuse_wait_desc return 'CHECKPOINT'?


I list my code:



Code Snippet
create database db_test
on primary
(
name=db_test,
filename='C:Program FilesMicrosoft SQL ServerMSSQL.1MSSQLDatadb_test.mdf'
)
log on
(
name=db_test_log,
filename='C:Program FilesMicrosoft SQL ServerMSSQL.1MSSQLDatadb_test_log.ldf',
maxsize=2mb
)
go
create table db_test..table1(col char(8000))

--insert data to fill up the database log
declare @n int
set @n=0
while @n<>-1
begin
insert into db_test..table1 values(replicate('a',8000))
end








any suggestions?


thanks in advance.

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How Can Store Mathematical Questions

Jan 10, 2008

hello sir
Thank for ur response to me in such a way.
I m student of cs in final semester & designing a project for online test series for all subject like mathematics, physics, chemistry, geography. Ihave a pb for storing mathematical questions which includes special symbols in organic chemistry structural farmulas etc.How can we store in database. i m sending a test paper for better understanding. plz help me.I will be hioghly obliged to u for this.

Your's sincerely
Avanish Yadav

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Mar 5, 2008

What is the equivalent in Transact SQL for VB.net ^ (Exponent Operator)

I have a following equation in VB.net
DotGain = ((1 - 10 ^(D0 - D50)) /(1 - 10 ^ (D0 - D100))) * 100 - 50
where D0, D50 and D100 are decimal variables


Working on creating a SQL UDF where @D0,@D50 and @D100 are transact sql decimal variables

DECLARE @DotGain decimal
DECLARE @D0 decimal
DECLARE @D50 decimal
DECLARE @D100 decimal

SET @D0 = 0.10
SET @D50 = 0.54
SET @D100 = 1.20

SELECT @DotGain = 1 - POWER(10,(@D0 - @D50)) / 1 - POWER(10,(@D0 - @D100)) * 100 - 50


but it is giving me different result in TSQL than VB2005

Can someone correct me?

Thanks in advance.

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Aug 5, 2007

I've created a sql statement that retrieves number data from various table joins. The number data is then grouped according to various categories. What I need to do is to calculate the average of all the number data in a particular group. How do i go about this? Once calculated, the average needs to be displayed under the data.

For example, the report will list say five numbers (some sets may have more, it depends on how much data is returned based on the query), then under the five numbers, the average is given

2
4
3
6
0

Average: 5

What technique is best? Do I have to calculate the numbers in sql or do I need to configure the report to calculate the average? If so, how? Can someone show me step by step how to do averages for a set of data in the reporting services?

I am completely new to doing reports, I'm just a hobbyist, and I've only used databases to retrieve basic data, but not make manipulations for reports.

Any help will be appreciated.

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Sep 17, 2006

Hi

I would like to is there any way we can store mathematical equations, that can be typed using equations 3.0, in sql server database as a column. What would be the datatype for the same.

Thanks

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Sep 17, 2014

I am having 4 Columns Qty decimal(12,3),CF1 Decimal(12,3),CF2 Decimal(12,3),Flag TinyInt.

I want to perform following without using case if it is possible.

When value of Flag is 0 then Qty*(CF2/CF1)
When value of Flag is 1 then Qty

And i Don't want to use any functions like isnull,NullIf,IIF even not union or union all.How to do this calculation without using any function.

Actually i am having more then 100000 rows in table and if i use functions then my index might not be called.,that why want to avoid cases and functions.

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Query Using Mathematical Function Of Values From 2 Tables Has A Performance Problem

Aug 2, 2007

When I am executing a query that uses a mathematical function on values from 2 tables the query takes much longer than the same query that uses values from 1 table, even though the join remains the same.

Why is this happening?
Is there a way to bypass this problem?

Long query ( values from 2 tables ) :
SELECT
MAX ( ( SIGN ( attribute.keyValue- ( -2027587559 ) ) *SIGN ( attribute.keyValue- ( -2027587559 ) ) -1 ) *-1*data.val ) AS maxVal
FROM
DATA data,
ATTR attribute,
TREE_ELEMENT elm,
TREE_ELEMENT subject
WHERE
data.elmId=elm.id
AND attribute.keyValue IN ( 345647222,1569153803,1569146115,-2027587559 )
AND subject.id=elm.subjectId
AND subject.name = ‘test’


Short query ( values from 1 table ) :
SELECT
MAX ( ( SIGN ( data.keyValue- ( -2027587559 ) ) *SIGN ( data.keyValue- ( -2027587559 ) ) -1 ) *-1*data.val ) AS maxVal
FROM
DATA data,
ATTR attribute,
TREE_ELEMENT elm,
TREE_ELEMENT subject
WHERE
data.elmId=elm.id
AND attribute.keyValue IN ( 345647222,1569153803,1569146115,-2027587559 )
AND subject.id=elm.subjectId
AND subject.name = ‘test’


Long query execution plan:
Execution Tree
--------------
Stream Aggregate ( DEFINE: ( [Expr1004]=MAX ( ( sign ( [attribute].[keyValue]--2027587559 ) *sign ( [attribute].[keyValue]--2027587559 ) -1 ) * ( -1*[data].[val] ) ) ) )
|--Nested Loops ( Inner Join )
|--Hash Match ( Inner Join, HASH: ( [elm].[id] ) = ( [data].[elmId] ) , RESIDUAL: ( [data].[elmId]=[elm].[id] ) )
| |--Nested Loops ( Inner Join, OUTER REFERENCES: ( [subject].[id] ) )
| | |--Index Seek ( OBJECT: ( [TREE_ELEMENT].[TREE_ELEMENT_NAME_IDX] AS [subject] ) ,
SEEK: ( [subject].[name]=’test’ ) ORDERED FORWARD )
| | |--Index Seek ( OBJECT: ( [TREE_ELEMENT].[TREE_ELEMENT_APP_ID_IDX] AS [elm] ) ,
SEEK: ( [elm].[subjectId]=[subject].[id] ) ORDERED FORWARD )
| |--Clustered Index Scan ( OBJECT: ( [DATA].[PK__DATAS_SAMPL__485B9C89] AS [data] ) )
|--Table Spool
|--Index Seek ( OBJECT: ( [ATTR].[TREE_Z_IDX] AS [attribute] ) ,
SEEK: ( [attribute].[keyValue]=-2027587559 OR [attribute].[keyValue]=345647222 OR [attribute].[keyValue]=1569146115 OR [attribute].[keyValue]=1569153803 ) ORDERED FORWARD )



Short query execution plan:
Execution Tree
--------------
Stream Aggregate ( DEFINE: ( [Expr1004]=MAX ( [partialagg1005] ) ) )
|--Nested Loops ( Inner Join )
|--Stream Aggregate ( DEFINE: ( [partialagg1005]=MAX ( ( sign ( [data].[keyValue]--2027587559 ) *sign ( [data].[keyValue]--2027587559 ) -1 ) * ( -1*[data].[val] ) ) ) )
| |--Hash Match ( Inner Join, HASH: ( [elm].[id] ) = ( [data].[elmId] ) , RESIDUAL: ( [data].[elmId]=[elm].[id] ) )
| |--Nested Loops ( Inner Join, OUTER REFERENCES: ( [subject].[id] ) )
| | |--Index Seek ( OBJECT: ( [TREE_ELEMENT].[TREE_ELEMENT_NAME_IDX] AS [subject] ) ,
SEEK: ( [subject].[name]=’test’ ) ORDERED FORWARD )
| | |--Index Seek ( OBJECT: ( [TREE_ELEMENT].[TREE_ELEMENT_APP_ID_IDX] AS [elm] ) ,
SEEK: ( [elm].[subjectId]=[subject].[id] ) ORDERED FORWARD )
| |--Clustered Index Scan ( OBJECT: ( [DATA].[PK__DATAS_SAMPL__485B9C89] AS [data] ) )
|--Index Seek ( OBJECT: ( [ATTR].[TREE_Z_IDX] AS [attribute] ) ,
SEEK: ( [attribute].[keyValue]=-2027587559 OR [attribute].[keyValue]=345647222 OR [attribute].[keyValue]=1569146115 OR [attribute].[keyValue]=1569153803 ) ORDERED FORWARD )

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Aug 28, 2007

Hi



I am trying to create a scale-out deployment of Reporting Services
2005 on a NLB cluster web farm by following the instructions in:
http://technet.microsoft.com/en-us/library/ms159114.aspx


However, when I install and configure Reporting Services on the second
node, and then go back to the first node to join the second node to
the scale-out deployment (as described in step 11 under 'To install
and configure the second report server instance"), I get the following
exception:


ReportServicesConfigUI.WMIProvider.WMIProviderException: An unexpected
error has occurred. Details:


The RPC server is unavailable. (Exception from HRESULT: 0x800706BA) ---

> System.Runtime.InteropServices.COMException (0x800706BA): The RPC


server is unavailable. (Exception from HRESULT: 0x800706BA)
at
System.Runtime.InteropServices.Marshal.ThrowExceptionForHRInternal(Int32
errorCode, IntPtr errorInfo)
at System.Management.ManagementScope.InitializeGuts(Object o)
at System.Management.ManagementScope.Initialize()
at System.Management.ManagementScope.Connect()
at
ReportServicesConfigUI.WMIProvider.RSInstances.GetInstances(String
machineName)
--- End of inner exception stack trace ---
at
ReportServicesConfigUI.WMIProvider.RSInstances.GetInstances(String
machineName)
at
ReportServicesConfigUI.WMIProvider.RSInstances.GetInstance(String
machineName, String instanceName)
at
ReportServicesConfigUI.Panels.ClusterManagementPanel.ConfigureWebFarm(Objec­t
sender, RSReportServerInfo[] rsInfos)


I have spent hours searching for ideas, but so far no success. I have
also tried the following:


1. Enabling DTC access
2. Ensuring RPC service is running on both web and db servers
3. Installing WMI Windows Installer Provider
4. Granting admin rights on both db and web servers to the account
under which Reporting Services is running


Any help or suggestions would be greatly appreciated. It looks like
this should be a straight-forward task.


Thank you.

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Hi,

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Thanks

Pete Burton
(IT Support)
Durham Aged Mineworkers Homes Association

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Jan 29, 2007

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Is the best way to do this to also backup the Transaction Log, and then perform a DBCC SHRINKFILE command? It just seems like there should be an easier way...?

Thanks!

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Dec 21, 2005

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SELECT CallDate, CallTime, Mid(CallRecordData, 68, 3) AS Extension, 'I' AS Direction, Mid(CallRecordData, 34, 11) AS Called,
Val(Mid(CallRecordData, 18, 2)) + Val(Mid(CallRecordData, 21, 2))/ 60 AS Minutes, Val(Mid(CallRecordData, 21, 2)) AS Seconds
FROM CallRecords
WHERE (CallDate = ?) AND (CallTime >= ?) AND (CallTime < ?) AND (Mid(CallRecordData, 30, 1) <> '9')

When I preview in the Transform Data Task, I get:
Package Error
Error Source: Microsoft JET Database Engine
Error Description: No value given for one or more required parameters.

When I look at the parameters, they are listed. I check their values, and they have the appropriate values (DateCalled, String, 07/14/2005) (StartTime, String, 06:30) (EndTime, String, 07:00)

When I run it in the build query or in Access with a linked table to the source, I can enter the values when asked for them and it works.

Thanks for any help you can provide.

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OLE DB provider "SQLNCLI11" for linked server "<ip of Linked Server>" returned message "Protocol error in TDS stream".
OLE DB provider "SQLNCLI11" for linked server "<ip of Linked Server>" returned message "Communication link failure".

Msg -1, Level 16, State 1, Line 0

Session Provider: Physical connection is not usable [xFFFFFFFF].

OLE DB provider "SQLNCLI11" for linked server "<ip of Linked Server>" returned message "Communication link failure".

Msg -1, Level 16, State 1, Line 0

Session Provider: Physical connection is not usable [xFFFFFFFF].

OLE DB provider "SQLNCLI11" for linked server "<ip of Linked Server>" returned message "Communication link failure".

Msg 10054, Level 16, State 1, Line 0

TCP Provider: An existing connection was forcibly closed by the remote host.

How I can resolve it. I've read on Distributed Transactions but I understand that it only applies to manipulation statements?

Both are SQL servers. Linked Server is SQL2008R2 if not mistaken. Local DB Engine is SQL2014.

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Can anyone assist me in solving this problem:

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Thanks,

Rey

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Table:PR
WBS1 WBS2 WBS3
123-456 1000 01
123-456 1000 02
123-456 2000 02
567-890 2000 01
567-890 2000 02

Table:PR_Template
WBS2 WBS3
1000 00
1000 01
1000 02
2000 00
2000 01
2000 02

After Insert I should have:

wbs1 wbs2 wbs3
123-456 1000 00
123-456 1000 01
123-456 1000 02
123-456 2000 00
123-456 2000 01
123-456 2000 02
567-890 1000 00
567-890 1000 01
567-890 1000 02
567-890 2000 00
567-890 2000 01
567-890 2000 02




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What I have now will find the values that need to be inserted for a particular project but I don't know how to go through each project and perform the insert:

Select * from PR_template Where Not Exists
(Select Wbs1, Wbs2, Wbs3 from PR where PR.WBS2 = PR_Template.WBS2
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359 358 Invoice 3/5/2008 4:13:52 pm
360 358 Shipping 3/5/2008 5:11:09 pm
361 358 Receiving 3/6/2008 4:22:01 am

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Msg 208, Level 16, State 1, Line 1
Invalid object name 'dbo.rpt23t'.
Msg 4104, Level 16, State 1, Line 7
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Table_Playlist
-----------------
ID (int)
MediaType (char)
MediaId (int)

Table_Audio
-----------------
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Table_Video
--------------
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Hope that makes sense. Thanks

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Performing Backups Using Network Resource

Sep 16, 1998

I`m having difficulty performing a SQL dump using a network drive. I have successfully created a backup device on a network drive but when I go to perform a backup using it I get the following error message: "Can`t open dump device `RSS4DATARSA3_Dump.Dat`, device error or device off line. Please consult the SQL Server error log for more details. (Message 3201)" I can successfully perform a backup using a local drive but not this network drive. I have checked the permissions on the network drive and is seems ok. I use the following command to try to perform the backup: "DUMP DATABASE RSA3 TO DISK = `Rss4DataRSA3_Dump.Dat WITH STATS = 10, INIT". Any help would be most appreciated. Thanks in advance!

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