Using VS05 Pro, VB, Sql Express...
For a DBConcurrency exception, is there a way to determine the Column(s) that triggered the excepction? The exception itself does not seem to contain the information. You could probably write a very complex method comparing
DataRowVersions
, to determine which value is different, but that seems overkill.
Thanks!
Bob
What query should I run?
1. To determine whether a column is a rowguid or not using C# .NET 1.1
2. To add/modify column information and be able to set/change:
- Primary key
- Column Name
- Data Type
- Length
- Allow Null
- Default value
- Precision
- Scale
- Identity
- Identity Seed
- Identity Increment
- Row guid
Thanks a lot!
Do anyone know how to find out programmatically is a particular column in
a table is being used as a foreign key?
Thanks,
Kurt
Do anyone know how to find out programmatically is a particular column in
a table is being used as a foreign key?
Thanks,
Kurt
Does anyone know how to determine the base datatype of a column? I've tried using sp_columns but if there are user defined datatypes on the column it returns that name instead of the base datatype. I've also tries accessing systypes and syscolumns to determine the base datatypes.
Any tips or trick would really be apreciated!
Kurt
I need to determine if a value for a group of rows is the same or different and I am not sure where to begin. I am fairly new to writing T-Sql code. I am working with SQL Server 2005. This is a work assignment; I am not a student.
I have two tables: One for Course and another for CourseDays. As the Course table implies, it lists courses for a school. The CourseDays tables has a row for each day a course is held. For instance, one course maybe held on Monday, Wednesday, and Friday, so there would be three rows, one row for each day. A given course could be held in a different room for each day. I am trying to write a query that returns one row for each course, and if the room number is the same for each day the class is held, return that room number in the row, else return 'Various'.
Course table:
CourseID, Desc
1 English
2 History
3 Science
CourseDays table:
CourseID, Day, RoomID
1 M 320
1 W 445
1 F 680
2 T 123
2 Th 123
3 M 514
3 T 514
3 W 521
3 Th 901
3 F 521
Expected results:
CourseID, Desc, RoomID
1 English Various
2 History 123
3 Science Various
I simplified the example, as there are about 30 columns in the table and about half a million rows.
Hi all,
I'm new to this whole trigger 'thing', so forgive me if this question has been asked and answered a few times already.
I'm in the process of writing a trigger that will send an e-mail to an application admin when any table within a given database is altered (IE, a column is added or deleted). I can get the e-mail to fire off when that happens without any issue, but I'd like to be able to let the admin know which table was tweaked and what new column was added.
Is this a relatively easy thing to do and I'm just not finding the right built-in variable name, or does something more need to be done?
Thanks,
-Mike
Greetings everyone, I am attempting to build my first application using Microsofts Sql databases. It is a Windows Mobile application so I am using Sql Server Compact 3.5 with Visual Studio 2008 Beta 2. When I try and insert a new row into one of my tables, the app throws the error message shown in the title of this topic.
'((System.Exception)($exception)).Message' threw an exception of type 'System.NotSupportedException'
My table has 4 columns (i have since changed my FavoriteAccount datatype from bit to Integer)
http://i85.photobucket.com/albums/k71/Scionwest/table.jpg
Account type will either be "Checking" or "Savings" when a new row is added, the user will select what they want from a combo box.
Next is a snap shot of my startup form.
http://i85.photobucket.com/albums/k71/Scionwest/form.jpg
Where it says "Favorite Account: None" in the top panel, I am using a link label. When a user clicks "None" it will go to a account creation wizard, and set the first account as it's primary/favorite. As more accounts are added the user can select which will be his/her primary/favorite. For now I am just creating a sample account when the label is clicked in an attempt to get something working. Below is the code used.
private void lnkFavoriteAccount_Click(object sender, EventArgs e)
{
FinancesDataSet.BankAccountRow account = this.financesDataSet.BankAccount.NewBankAccountRow();
account.Name = "MyBank Checking Account";
account.AccountType = "Checking";
account.Balance = Convert.ToDecimal("15.03");
account.FavoriteAccount = 1;//datatype is an integer, I have changed it since I took the screenshot.
financesDataSet.BankAccount.Rows.Add(account);
//The next three lines where added while I was trying to get this to work.
//I don't know if I really need them or not, I receive the error regardless if these are here or not.
this.bankAccountTableAdapter1.Update(financesDataSet);
this.financesDataSet.AcceptChanges();
refreshDatabase();
}
the refreshDatabase() code is here:
private void refreshDatabase()
{
this.bankAccountTableAdapter1.Fill(this.financesDataSet.BankAccount);
//Aquire a count of accounts the user has
int numAccounts = financesDataSet.BankAccount.Count;
//Loop through each account and see which one is the primary.
for (int num = 0; num != numAccounts; num++)
{
//Works ok in frmMain_Load, but when my lnkFavoriteAccount_click calls this, it throws the error.
if (this.financesDataSet.BankAccount[num].FavoriteAccount == 1)
{
//Display the primary account on our home page. User can click the link label & be taken to their account register.
this.lnkFavoriteAccount.Text = this.financesDataSet.BankAccount[num].Name.ToString();
this.lnkFavoriteFunds.Text = this.financesDataSet.BankAccount[num].Balance.ToString();
break;
}
}
}
and my form_load code
private void frmMain_Load(object sender, EventArgs e)
{
refreshDatabase();
}
So, when I click on the lnkFavoriteAccount label, and my new row gets added, the app stops at the following line in my DataSet.Designer
[global:ystem.Diagnostics.DebuggerNonUserCodeAttribute()]
public byte FavoriteAccount {
get {
try {
return ((byte)(this[this.tableBankAccount.FavoriteAccountColumn]));
}
catch (global:ystem.InvalidCastException e) {
//Stops at the following line, this error was caused by 'if (this.financesDataSet.BankAccount[num].FavoriteAccount == 1)'
throw new global:ystem.Data.StrongTypingException("The value for column 'FavoriteAccount' in table 'BankAccount' is DBNull.", e);
}
}
set {
this[this.tableBankAccount.FavoriteAccountColumn] = value;
}
}
I have no idea what I am doing wrong, all of the code I used I retreived from Microsofts help documentation included with VS2008. I have tried used my TableAdapter.Insert() method and it still failed when it got to
if (this.financesDataSet.BankAccount[num].FavoriteAccount == 1)
in my refreshDatabase() method it still failed.
When I look, the data has been added into the database, it's just when I try to retreive it now, it bails on me. Am I retreiving the information wrong?
Thanks for any help you guys can offer.
Johnathon
Hi,
I have the following query
"SELECT Test_Question.Question_ID, Test_Question.Grade_Number as GNum, Test_Question.Question_Number as QNum, Question.Question_Text as QText , Answer.Answer_Number as AnsNum, Answer.Answer_Text as AnsTxt, Answer.ID AS Ans_ID FROM Test_Question, Question, Answer WHERE Test_Question.Active=1 AND Test_Question.Question_ID = Question.ID AND Test_Question.Deleted=0 and Test_Question.Test_Detail_ID ="+ currPTestId +" AND Question.ID = Answer.Question_ID GROUP BY Test_Question.Question_ID ORDER BY Test_Question.Question_Number, Test_Question.Question_ID, Answer.Answer_Number";
But I get an exception column Test_Question.Grade_Number is invalid in the select list because it is not contained in either an aggregate function or the group by clause.
Could some one point out what is the problem in the above query.
thanks in advance
shail
I would like to determine the largest numeric datatype scale of a column.
Decimal Largest Scale Solution found here.
Sample Data:
2222.0002430
2222.0000245
2222.0023455
OutCollection[1] holds the erroroutput columncollection.
metaData.OutputCollection[1].OutputColumnCollection.RemoveObjectByID(errOutputCol.ID);
some times 1 Or 2 columns gets deleted, after that the exception is raised.
Hi,
I have developed a Smart Device Application using VB.NET 2003 on top of Windows Mobile 2003 platform which is running on Symbol PPT 8846, a model used in our construction sites for gathering data bar-coded on Pipes, trucks...etc. This application uses SQL CE as its back-end database and since its difficult to cover our sites with WI-FI coverage, most of the time the application is running offline. As for that, on a daily basis, synchronization is done in the offices before the system is released into sites. I have been doing several implementations in several projects and till now everything is running fine but until I got a native exception on exporting the data back into the server database. The server database or main database is using Fox Pro and this is what led me to build a Web Service for communication between SQL CE and Fox Pro. Anyways, going back to that mysterious exception, I did some of my intensive debug on what caused it. As a start, I went through the code line by line to check if there was a memory leak from P/Invokes; but I was shocked that the exception was raised from "SQLCEDataAdapter.Fill(Dataset)" function. First thought came to mind was to hard reset and to re-install the application but no luck. Since it was about SQLCE, I moved towards checking the data found in the SQLCE database and tried to de-fragment the data found under the table needed for export. What I mean by de-fragmenting is that I grouped the data under different classes or families and created different tables depending on these classes. Then tried exporting again and Bingo the data was exported except one record...That was so weird!! huh? (The database had 515 records)
So I went for the Query Analyzer to try to view that record but no hope, it was taking too long to view the record, I just left it for more than 15 minutes and still no response from the Analyzer...it was so strange since there was only one record in that table!!!?!!! As going further, I was so curious why this record causing that native and inability to be viewed by the Analyzer?? I did testing on the column-level of that record and found out that you can view all the columns except two : nvarchar(200) and nvarchar (20)....I was able to resolve this problem with an SQL statement to update both columns with empty or dummy values...!!!!!
But after this resolution, I really don't know how it could be controlled later on!! and why it happened??
I would be glad if anyone can give me any advise on why such problem popped out and especially on the column-level in SQL CE?? And how to overcome it?
Thanks for your time and effort,
Looking forward to hear from as soon as possible...
Just for Clarification:
.NET CF 1.0 SP3
SQLCE 2.0
were used
I have visual studio 2005 with XP home. I'm trying to find out which service pack my SQL server is running as I've been told that Service pack 2 has a few bugs.
For example ADO Applications Report a Syntax Error When Column Names Contain Spaces. This appears to be an error i am recieving. I just wanted to confirm that it is a microsoft bug rather then something Im doing wrong.
Microsoft meantions the bug here: http://support.microsoft.com/kb/264687
I've been looking everywhere. I do not have the "query analyzer window" where you can find this out as I have VS 2005. How would I find this out.
Thank you
I'm moving data from one database to another (INSERT INTO ... SELECT ... FROM ....) and am encountering this error:
Msg 8114, Level 16, State 5, Line 6
Error converting data type varchar to numeric.
My problem is that Line 6 is:
set @brn_pk = '0D4BDE66347C440F'
so that is obviously not the problem and my query has almost 200 columns. I can go through one by one and compare what column is int in my destination table and what is varchar in my source tables, but that could take quite a while. How I can work out what column is causing the problem?
Hi,
I got an strange problem with one of my packages.
When running the package in VisualStudio it runs properly, but if I let this package run as part of an SQL-Server Agent job, I got the message "The script threw an exception: Exception of type 'System.OutOfMemoryException' was thrown." on my log and the package ends up with an error.
Both times it is exactly the same package on the same server, so I don't know how the debug or even if there is anything I need to debug?
Regards,
Jan
Hi
I was wondering if anyone has an idea of how we could find the table names and column names of the tables in our Sql server database at runtime/dynamically given our connection string? Please let me know.
Thanks.
Hi all,
How to determine the value for the bar in Neural Network Viewer? I know the value is displaying in the tooltips when we pointing to the bar in the table but i don't know how to get them. So where can i get those of calculation or data of score, probability of value1 and 2, and lift for value1 and 2 ? Is it get from the Microsoft Neural Network Content Viewer? which column and how to calculate? If not, please advise.
Hope my question is clear.
I am looking forward to hearing from you shortly and thanks a lot in advance.
Thanks!
With best regards,
Yours sincerely,
xuenly
I am trying to determine the next available order id using the method below. It works provided the table has a record in it. If it doesn't I get the error "Input string was not in a correct format." I am certain that it is because the query is returning a value of NULL. How can get around that or check for the NULL value?' Establish data connection...Dim sqlConn As New SqlConnection(ConfigurationSettings.AppSettings("connectionstring"))'Determine order id number...Dim order_id As IntegerDim strSQL As StringstrSQL = "Select MAX(order_id) from mkt_order"Dim sqlCmd As New SqlCommand(strSQL, sqlConn)Dim sqlDA As New SqlDataAdapter(sqlCmd)Dim sqlDS As New DataSetsqlDA.Fill(sqlDS, "item")If sqlDS.Tables(0).Rows.Count <> 0 Thenorder_id = Convert.ToInt32(sqlDS.Tables(0).Rows(0)(0).ToString()) + 1Elseorder_id = 1End If
View 1 Replies View RelatedGood day,
We have a web application (ASP) running on SQL Server 7.0.
Recently, the users are getting quite a lot of timeouts on
the database:
Microsoft OLE DB Provider for ODBC Drivers error '80040e31'
[Microsoft][ODBC SQL Server Driver]Timeout expired
The database is not supposed to be doing too much work, so I can't
understand why these timeouts are occuring. How can I determine
the cause of the timeouts?
The cause could probably anything from a trigger that's taking
too long, a query that's taking too long, or simply bad database design.
I've looked at SQL Server's Profiler, but could not yet use it
successfully to give me any hints of what could cause the timeouts.
Any ideas of how I can use Profiler, Performance Monitor, or any other
tool(s) to see what is happening in the background in the database,
i.e. how much processing a trigger is using, etc.
Thanks very much!
---
Gert Lombard
OSI Airport Systems
South Africa
I'm new to full text catalogs and we have a vendor who's code utilizes them. The database server is SQL 2005 and I am noticing the following message in the SQL log every minute.
Changing the status to MERGE for full-text catalog "ResearchCatalog" (5) in database "DBA_Test" (11). This is an informational message only. No user action is required.
A SQL job is running the following command every minute.
exec sp_fulltext_catalog 'ResearchCatalog', 'start_incremental'
What is the typical frequency for running an incremental?
Can the messages be suppressed?
Thanks, Dave
for sql servers how can i determine who [what accounts] are the dbas?
View 1 Replies View RelatedI've been doing a lot of reading on this and my head is starting tohurt! It seems to be quite a feat to work out how much memory isactually being used by our server.I'm running W2K advanced server with SQL 2000 EE, 8GB of RAM, a min of4GB and a max of 6GB is assigned to SQL server.I'm trying to work out whether we've assigned enough or toomuch/little memory to SQL server. My first thought was to let SQLdymanically manage its own memory and see how much it uses, of coursewhen AWE (/3GB /PAE) is enabled it will just use all that isavailable.In perfmon "target server memory" = 6.1GB, "total server memory" =6.1GB, "total pages" = 768000 ( x 8KB = 6.1GB).My second thought was to use "total pages" - the average "free pages"= average mem used, therefore giving me the average amount of memoryused by SQL. I found out that SQL uses a min of 4GB (the min weassigned) and the max of all the memory, 6GB.Is there an easier way of finding out how much memory is actually usedin this situation or is going by the above average the best way?What i'm unsure about is will SQL just use all memory assigned to ituntil it has the whole DB in memory? 20GB including indexes etc....Any help would be greatly apprechiated.
View 2 Replies View RelatedI need to determine when (maybe) and if (definitely) a SQL Agent job will run again. I need to maintain a table of the next pending execution for each job. I need to be able to update this table from within a SQL Agent job, but preferably from within an executing SSIS package in the job. Is this possible and if so, any suggestions on how?
Thanks
Hi all... This is the definition on the M/S site:
"Deterministic functions always return the same result any time they are called with a specific set of input values and given the same state of the database. Nondeterministic functions may return different results each time they are called with a specific set of input values even if the database state that they access remains the same."
Good... straight forward, right? Ok.... try entering thses command seperately:
Create Table Readings (ReadingDate DateTime Not Null);
Create Function [dbo].[funct_SameDate](@datReadingDate Datetime)
Returns DateTime
As
Begin
return @datReadingDate;
End
Alter table Readings add
[TempColumn] as (dbo.[funct_SameDate](ReadingDate)) PERSISTED NOT NULL;
Error on last command returns:
Computed column 'TempColumn' in table 'Readings' cannot be persisted because the column is non-deterministic.
Can someone please explain this to me? The same value is always being returned.
This does work:
Create Table Readings (ReadingDate DateTime Not Null);
Alter table Readings add [TempColumn] as (ReadingDate) PERSISTED NOT NULL;
I obviously want to do more things inside the function, but I can't get by the first step.
Any suggestions?
Thanks!
Forch
Hi,
I have a report that has a table with detail grouping. This table shows the sales by day for each product. The users only want to see the date field for the first item in the group. After that, they do not want to display this field (to reduce the data on the report). However, when the data wraps to a second page, they want the date to appear on the first row of the new page.
Is there any way to determine if a row is the first row on a page?
I tried using the RowCount, but that continues from the previous page.
Any thoughts?
Thanks!
David.
hi,
since I am kind o'new with SQL, I preffer get an advice fro you pro's: I created an application which performs access to a database on an SQL server. the application will be used by a few different users, each on a different computer. the application calls stored procedures, updatesinserts records in tables on the SQL and delete rows. what would be the best role to define the users activity ? How do I limit their activity ONLY to the specified actions ?
I'm working on a sproc that determines the next order id for a specified customer. The table has
custid int,
ordernum varchar(10)
Data is:
1000, 1000-001
1000, 1000-002
1001, 1001-001
1000, 1000-003
I need to know the next ordernum for the specified custid. For example, GetNextOrderNum(1000) should return 1000-004. GetNextOrderNum(1002) should return 1002-001 (since there aren't any orders yet).
I honestly don't know where to begin.
Can someone please help?
Hi All,
i am working with database mirroring and i need to be able to determine which database will be principal.
for example if server A is principle and server B is mirrored and server A is down, then server B take owner and become principle, after fixing server A i want it to be principle again,
is it possible ??
What is the most reliable way to determine the last LSN of a database? I've looked in sys.database_files to no avail. I've also looked in msdb.dbo.backupset which is accurate but only based on backups already performed not the current state of the database.
-joe
With an INSERT statement I add a record to a table.
Then I want to get the (autonumber) ID of the newly created record.
What is the fastest and best way to do this?
I need to determine which service pack we are running on our sql servers. I run SELECT @@VERSION and get it tells me that we are running 7.00.1020. I have a listing from google that tells me the value for each service pack, but my version doesn't match anything on the list.
Can you tell which service pack I am running based on the results of my query?
Thanks!
Great Monday Morning to one and all,
Setup: SQL7 w/SP4 running on W2K Pro
Table in Question:
I have a system that processes inserts that originate from automatic data collection subsystems on manufacuturing cells. The system processes about 2500 records a day. The system is isolated with no ready support or attention. My goal is to automate any and every reasonable admin task. My present activity centers on re-indexing the main table (receives the data from the inserts, supplies the data for web based reporting).
The table - tb_production_log - receives inserts that are time stamped and bear a Machine_id. The table has a clustered index built on the Machine_id (int) and Date_time (time of data's acquisition). The table only receives Inserts, the records are never Updated. No inserts are out of time sequence (no older records ever have to be 'wedged' in amongst existing records). Ulitmately, the table is tested daily for records with age > 365 days. Such records are Deleted.
For the past week, I have been running a monitoring stored procedure on my test box to track the fragmentation of the tb_production_log table. It's based on DBCC SHOWCONTIG with some extra tests. After capturing the SHOWCONTIG data, the sp runs a test query against the table to emulate a typical User report. I track the time this query takes. The query covers records over the last 7 days. (approx. 17,500 records involved). In addition, I track the time it takes Inserts to run. Inserts are done in batches from an external app. I get a RecordsPerSecond data point for each batch.
Great Monday Morning to one and all,
Setup: SQL7 w/SP4 running on W2K Pro
Table in Question:
I have a system that processes inserts that originate from automatic data collection subsystems on manufacuturing cells. The system processes about 2500 records a day. The system is isolated with no ready support or attention. My goal is to automate any and every reasonable admin task. My present activity centers on re-indexing the main table (receives the data from the inserts, supplies the data for web based reporting).
The table - tb_production_log - receives inserts that are time stamped and bear a Machine_id. The table has a clustered index built on the Machine_id (int) and Date_time (time of data's acquisition). The table only receives Inserts, the records are never Updated. No inserts are out of time sequence (no older records ever have to be 'wedged' in amongst existing records). Ulitmately, the table is tested daily for records with age > 365 days. Such records are Deleted.
For the past week, I have been running a monitoring stored procedure on my test box to track the fragmentation of the tb_production_log table. It's based on DBCC SHOWCONTIG with some extra tests. After capturing the SHOWCONTIG data, the sp runs a test query against the table to emulate a typical User report. I track the time this query takes. The query covers records over the last 7 days. (approx. 17,500 records involved). In addition, I track the time it takes Inserts to run. Inserts are done in batches from an external app. I get a RecordsPerSecond data point for each batch.