|
Is it possible to have a DataView that do not contain all the columns of the corresponding DataTable? If so, how do I do it?
--------
"I say no to drugs, but they don't listen."
- Marilyn Manson
|
|
|
|
|
Hi ...
I am trying to use ADO disconnected recordset to insert data into a sql table. I am using AddNew(vField, vValue) with UpdateBatch(). The code below does not throw any exceptions ... but does not add data to the table.
Any comments are appreciated,
Thanks,
Chris
<br />
<br />
void CTestApp::TestDatabaseUpdateBatch1a(void) <br />
{<br />
int nDataCount = 0; <br />
long nIndex = 0; <br />
long nIndex2 = 0; <br />
<br />
CString csMessage; <br />
CString csErrorMessage;<br />
CString csTemp; <br />
CString csSQL; <br />
<br />
BOOL bIsOpen; <br />
BOOL bIsEmpty; <br />
<br />
long nCount = 0; <br />
int nTemp = 0; <br />
int nLimit = 0; <br />
<br />
int nTempInt = 0; <br />
long nTempLong = 0; <br />
double nTempDouble = 0; <br />
<br />
HRESULT hResult; <br />
<br />
SYSTEMTIME st;<br />
<br />
<br />
int i = 0; <br />
<br />
string strTemp; <br />
<br />
_variant_t sval;<br />
<br />
_variant_t vNull;<br />
vNull.vt = VT_ERROR;<br />
vNull.scode = DISP_E_PARAMNOTFOUND;<br />
<br />
COleSafeArray colesaFieldList;<br />
COleSafeArray colesaDataList;<br />
<br />
vector<COleSafeArray> *pvecDataList;<br />
<br />
pvecDataList = new vector<COleSafeArray>; <br />
<br />
<br />
COleDateTime oledtCurrentDate = COleDateTime::GetCurrentTime();<br />
<br />
COleVariant vCurrentDateTime; <br />
<br />
CMxTextParse *pMxTextParse = NULL; <br />
<br />
CMainFrame *pMainFrame = (CMainFrame *)AfxGetMainWnd(); <br />
CFrameWnd* pChild = pMainFrame->GetActiveFrame();<br />
CTestMeteorlogixView* pView = (CTestMeteorlogixView*)pChild->GetActiveView(); <br />
<br />
pView->WriteLog("Start TestDatabaseUpdateBatch1a."); <br />
pView->WriteLog("Load table using AddNew() and UpdateBatch()."); <br />
<br />
<br />
_ConnectionPtr pConnection = NULL;<br />
_RecordsetPtr pRecordset = NULL;<br />
<br />
try<br />
{<br />
pConnection.CreateInstance(__uuidof(Connection));<br />
<br />
bstr_t bstrConnect("Provider='sqloledb';Data Source='SQLDEV';"<br />
"Initial Catalog='AlphaNumericData';"<br />
"User Id=cmacgowan;Password=cmacgowan");<br />
<br />
pConnection->Open(bstrConnect,"","",adConnectUnspecified);<br />
<br />
pRecordset.CreateInstance(__uuidof(Recordset));<br />
<br />
<br />
csSQL = "SELECT * FROM dbo.AAMacgowanTest WHERE RecordId IS NULL";<br />
<br />
<br />
pRecordset->PutRefActiveConnection(pConnection);<br />
pRecordset->CursorLocation = adUseClient;<br />
<br />
<br />
pRecordset->Open(csSQL.AllocSysString(), vNull, adOpenStatic, adLockOptimistic, -1);<br />
<br />
if(pRecordset->GetState() != adStateClosed)<br />
{<br />
<br />
if((pRecordset->BOF) && (pRecordset->GetadoEOF()))<br />
{<br />
bIsEmpty = false;<br />
}<br />
<br />
<br />
if(pRecordset->GetadoEOF())<br />
{<br />
bIsOpen = false;<br />
}<br />
else<br />
{ <br />
pRecordset->PutRefActiveConnection(NULL);<br />
}<br />
}<br />
<br />
<br />
<br />
pRecordset->PutRefActiveConnection(NULL);<br />
<br />
nCount = 1; <br />
<br />
while(nCount > 0) <br />
{ <br />
nCount--; <br />
<br />
nDataCount = 10; <br />
<br />
if (nDataCount >= 0) <br />
{ <br />
<br />
COleSafeArray warningList;<br />
<br />
VARIANT vFieldList[25]; <br />
VARIANT vValueList[25]; <br />
<br />
int nFieldIndex = 0; <br />
int nValueIndex = 0; <br />
<br />
<br />
vFieldList[nFieldIndex].vt = VT_BSTR;<br />
vFieldList[nFieldIndex].bstrVal = ::SysAllocString(L"Name");<br />
nFieldIndex++;<br />
<br />
vFieldList[nFieldIndex].vt = VT_BSTR;<br />
vFieldList[nFieldIndex].bstrVal = ::SysAllocString(L"Section");<br />
nFieldIndex++;<br />
<br />
vFieldList[nFieldIndex].vt = VT_BSTR;<br />
vFieldList[nFieldIndex].bstrVal = ::SysAllocString(L"Code");<br />
nFieldIndex++;<br />
<br />
vFieldList[nFieldIndex].vt = VT_BSTR;<br />
vFieldList[nFieldIndex].bstrVal = ::SysAllocString(L"Latitude");<br />
nFieldIndex++;<br />
<br />
vFieldList[nFieldIndex].vt = VT_BSTR;<br />
vFieldList[nFieldIndex].bstrVal = ::SysAllocString(L"Longitude");<br />
nFieldIndex++;<br />
<br />
<br />
pView->WriteLog("Set data using AddNew() ..."); <br />
<br />
COleDateTime oledtCurrentDate2 = COleDateTime::GetCurrentTime();<br />
<br />
COleVariant vCurrentDateTime2(oledtCurrentDate2);<br />
<br />
memset(&st, 0, sizeof(SYSTEMTIME));<br />
st.wYear = 2000;<br />
st.wMonth = 1;<br />
st.wDay = 1;<br />
st.wHour = 12;<br />
<br />
for(i = 0; i < 10; i++)<br />
{<br />
<br />
nValueIndex = 0; <br />
vValueList[nValueIndex].vt = VT_BSTR;<br />
vValueList[nValueIndex].bstrVal = ::SysAllocString(L"BLUE");<br />
nValueIndex++;<br />
<br />
vValueList[nValueIndex].vt = VT_BSTR;<br />
vValueList[nValueIndex].bstrVal = ::SysAllocString(L"KSTP");<br />
nValueIndex++;<br />
<br />
vValueList[nValueIndex].vt = VT_I4;<br />
vValueList[nValueIndex].dblVal = 100 + nFieldIndex; <br />
nValueIndex++;<br />
<br />
vValueList[nValueIndex].vt = VT_R8;<br />
vValueList[nValueIndex].dblVal = 11.11 + nFieldIndex; <br />
nValueIndex++;<br />
<br />
vValueList[nValueIndex].vt = VT_R8;<br />
vValueList[nValueIndex].dblVal = 22.22 + nFieldIndex; <br />
nValueIndex++;<br />
<br />
pRecordset->AddNew(vFieldList, vValueList);<br />
}<br />
<br />
<br />
<br />
pView->WriteLog("Call UpdateBatch()."); <br />
<br />
pRecordset->PutRefActiveConnection(pConnection);<br />
<br />
pRecordset->UpdateBatch(adAffectAll);<br />
<br />
pRecordset->Close();<br />
pConnection->Close();<br />
<br />
} <br />
}<br />
}<br />
catch(_com_error *e)<br />
{<br />
CString Error = e->ErrorMessage();<br />
AfxMessageBox(e->ErrorMessage());<br />
pView->WriteLog("Error processing TestDatabase()."); <br />
}<br />
catch(...)<br />
{<br />
csMessage = "Undefined exception handled. Error message details \n\n"; <br />
<br />
hResult = GetAdoErrorMessage(m_pConnection, <br />
&csErrorMessage);<br />
<br />
csMessage += csErrorMessage; <br />
csMessage += "\nmethod: CTestMeteorlogixApp::OnTestDatabaseAdoBulkload()"; <br />
<br />
AfxMessageBox(csMessage);<br />
<br />
}<br />
<br />
csTemp.Format("Last Row %03d DIcastId = %s ", nIndex, strTemp.c_str()); <br />
pView->WriteLog(csTemp); <br />
<br />
pView->WriteLog("End TestDatabaseUpdateBatch1."); <br />
<br />
}<br />
<br />
<br />
<br />
<br />
<br />
Thanks,
Chris
|
|
|
|
|
Hello to all of you, good code-time for all. 
Partners, I'm having a problem and would like to ask for help. Is the following:
I would like to create an App with some reports built-in (no external files, ok?); now, when I create a CrystalReport, assign (in my App) a viewer and later try to execute App, it requests for login, bla, bla, bla (all those things you know) but my database doesn't have any of these, so, what's the matter here? . What is more, have also created a DB with pass and all of these but when filled out what is needed it always says "Logon failed". Suggestions?
Thanx in advance. May schwartz be with U.
Note: If you consider this question should be asked somewhere else, let me know, I'm a newbie here, ok?
|
|
|
|
|
What is the datasource of your report if its dataset, then i think there's no problem.
Or.. Try this one
*************************
private void applyLoginInfo(ReportDocument report){
TableLogOnInfo loginfo = new TableLogOnInfo();
foreach (Table table in report.Database.Tables){
loginfo = table.LogOnInfo;
loginfo.ConnectionInfo.ServerName = database.Server; //Pass the server name
loginfo.ConnectionInfo.DatabaseName = database.Database; //pass the db name
loginfo.ConnectionInfo.UserID = database.UserID; //user id
loginfo.ConnectionInfo.Password = database.Password; //password
table.ApplyLogOnInfo(loginfo);
}
}
I hope this will help you 
|
|
|
|
|
I need suggestions.
I am creating a new database for a referral system. I have my main table "tblProviders" along with other 15-20 child tables such as tblTypeFacility, tblLanguges, tblTypePrograms,tblEnvironment...etc.
So, the user will be able to select one or more type of facilities, languagess, etc for each Provider. How can I save this information on the database.
Do I need to normalize every child table.
tblProvider -> tblProviderTypeFacility <-> tblTypeFacility
How this is going to perform and how complicated will be when I create a search for one or more options (type facilities, languages, etc)using asp.
Some one mentioned to do my child table as a lookup table...I am not sure what is a lookup table.
Any suggestion will be great!!
|
|
|
|
|
If you normalise as you suggested then the following SQL-Select statement will find all of the providers who can speak English and French:
select P.ProviderId, P.ProviderName<br />
from Provider P<br />
where P.ProviderId in (select ProviderId from ProviderLangauge where LanguageCode = 'UK')<br />
and P.ProviderId in (select ProviderId from ProviderLanguage where LangauageCode = 'FR')
The performance would depend upon the database that you are using and how many records are in each table (make sure that your development database contains a similar number of records to what you would expect in your live database).
A composite unique index on "ProviderLanguage(LanguageCode, ProviderId)" would be useful for resolving the above query. I would expect a (possibly clustered) primary key on "ProviderLanguage(ProviderId, LanguageCode)" to help your provider-maintenance web page.
I would also strongly recommend that you get yourself a good book on SQL and database design (if you don't already have one). Good knowledge of these two areas tend to lead to much simpler ASP code and much faster performance.
Hope this helps.
Andy
|
|
|
|
|
Hi,
I kind of have a strange situation here. One of our customer needs a realtime notification when a particular action is taken on their data and want an xml file. So, I created a trigger and an extended stored procedure. My idea is to create the xml in the trigger by concatinating row values into xml using an NTEXT object.
So, my question is, can I create an NTEXT object, concatenate string data and then, pass that value to my extended stored procedure? Then, have the extended stored procedure create a text file somewhere on the hard drive and write out that NTEXT value to file?
I know this is very strange but I can't really figure out another, more efficient way of doing it.
Thanks in advance for any ideas,
Craig
|
|
|
|
|
In the Enterprise version of .NET, you can edit SQL scripts in the GUI and then run it against a database just as if you were working in Query Analyser. I have the Professional version, where thise feature is turned off (you can run simple queries in that version, but not complex scripts).
Does anyone know if there is a plugin or something similar, even from Microsoft, that will allow me to do this without purchasing the entire Enterprise version of .NET?
~Steve
|
|
|
|
|
When I try to create a database in VS.NET thru the Server Explorer window I get this error:
ADO Error:
'Could not obtain exclusive lock on database 'MODEL'. Retry the operation later.
CREATE DATABASE failed. Some file names listed could not be created. Check previous errors.'
I'm running VS.NET Professional with MSDE 2000, so this should work, I think.
Anybody else here seen this error? Is there anything I can do about it? I'm not seeing anything in the log files concering what's causing this...
Get that finger out of your ear! You don't know where that finger's been!
|
|
|
|
|
Hmmmm... "MODEL" is the database that is used as a template for all new databases, it shouldn't ordinarily be written to. The exclusive lock is probably requested to prevent others from updating MODEL while a new database is in the process of being created.
My suggestion is to check to see if any processes are accessing MODEL and stop them.
EuroCPian Spring 2004 Get Together[^]
"You can have everything in life you want if you will just help enough other people get what they want." --Zig Ziglar
|
|
|
|
|
Your suggestion worked - for some dumb reason I tried to do this while connected to the databases...all of them.  But when I tried to create the new db while only being connected to the instance, it worked. Yeah, I'm new at this...
Thanks for your help
Frederick S Jones
"Get that finger out of your ear! You don't know where that finger's been!"
|
|
|
|
|
I want to create a script the database that I will be deploying with my application. The problem is that when I generate a SQL script it only scripts the database schema/structure but not the data. There is some data in the database that I wish to include with my script.
How can I script the database so that it includes the entire database including the data?
Thanks.
|
|
|
|
|
Some suggestions:
You can write the INSERT statements in a script. It can be time consuming if there is a lot of data.
You can create an XML file that contains the data and your deployment package can load that into the database.
You can skip the scripting of the database schema and have the deployment install pre-filled database files and just script the connection of these files to the Master database (I'm assuming your using SQL Server - other databases may differ)
EuroCPian Spring 2004 Get Together[^]
"You can have everything in life you want if you will just help enough other people get what they want." --Zig Ziglar
|
|
|
|
|
Does anyone know what's the equivalent of SQL Server Notification Services in Oracle?
I'm primarily looking to maintain the consistency of the data caches obtained from reading the database to be sync'ed with any changes made to the database. i.e, need a way for apps to register interest & be notified when a row changes for e.g. Are there any classes/add-ons in the .NET framework that works with the Oracle database? Any pointers would be appreciated.
Chen Venkataraman
|
|
|
|
|
Hi,
I want to save Armenian UniCode Characters in my tables any body knows which collation should I choose for my DataBase ?!!
Thanks in advance .
|
|
|
|
|
Hi, everyone. I need help to SQL 2000 server in relation to obtain a backup for any database. I have some trouble using the backup of SQL 2000 server because the SQL agent must be stop first before start the backup. How I can automaticly start a backup without user interaction with the server?
Johnny Lizardo
|
|
|
|
|
BEGIN
BEGIN TRANSACTION
DECLARE @JobID BINARY(16)
DECLARE @ReturnCode INT
SELECT @ReturnCode = 0
IF (SELECT COUNT(*) FROM msdb.dbo.syscategories WHERE name = N'[Uncategorized (Local)]') < 1
EXECUTE msdb.dbo.sp_add_category @name = N'[Uncategorized (Local)]'
-- Delete the job with the same name (if it exists)
SELECT @JobID = job_id FROM msdb.dbo.sysjobs WHERE (name = N'MyDatabase backup1')
IF (@JobID IS NOT NULL) BEGIN
-- Check if the job is a multi-server job
IF (EXISTS (SELECT *
FROM msdb.dbo.sysjobservers
WHERE (job_id = @JobID) AND (server_id <> 0)))
BEGIN
-- There is, so abort the script
RAISERROR (N'Unable to import job ''MyDatabase backup1'' since there is already a multi-server job with this name.', 16, 1)
GOTO QuitWithRollback
END
ELSE
-- Delete the [local] job
EXECUTE msdb.dbo.sp_delete_job @job_name = N'MyDatabase backup1'
SELECT @JobID = NULL
END
BEGIN
-- Add the job
EXECUTE @ReturnCode = msdb.dbo.sp_add_job @job_id = @JobID OUTPUT , @job_name = N'MyDatabase backup1', @owner_login_name = N'sa', @description = N'No description available.', @category_name = N'[Uncategorized (Local)]', @enabled = 1, @notify_level_email = 0, @notify_level_page = 0, @notify_level_netsend = 0, @notify_level_eventlog = 2, @delete_level= 0
IF (@@ERROR <> 0 OR @ReturnCode <> 0) GOTO QuitWithRollback
-- Add the job steps
EXECUTE @ReturnCode = msdb.dbo.sp_add_jobstep @job_id = @JobID, @step_id = 1, @step_name = N'Step 1', @command = N'sp_Hmx_BackupDb ''MyDatabase'',''D:\Database\DbBackups'',''MyDatabase1.BAK''', @database_name = N'MyDatabase', @server = N'', @database_user_name = N'', @subsystem = N'TSQL', @cmdexec_success_code = 0, @flags = 0, @retry_attempts = 0, @retry_interval = 0, @output_file_name = N'', @on_success_step_id = 0, @on_success_action = 1, @on_fail_step_id = 0, @on_fail_action = 2
IF (@@ERROR <> 0 OR @ReturnCode <> 0) GOTO QuitWithRollback
EXECUTE @ReturnCode = msdb.dbo.sp_update_job @job_id = @JobID, @start_step_id = 1
IF (@@ERROR <> 0 OR @ReturnCode <> 0) GOTO QuitWithRollback
DECLARE @stDate as int -- default job start date is today
SET @stDate=0
DECLARE @today as datetime
set @today = DATEADD(day,0,GETDATE()) -- get start date
set @stDate = DATEPART(yy,@today)*10000 + DATEPART(mm,@today)*100 + DATEPART(day,@today)
-- Add the job schedules
EXECUTE @ReturnCode = msdb.dbo.sp_add_jobschedule @job_id = @JobID, @name = N'backup1', @enabled = 1, @freq_type = 4, @active_start_date = @stDate, @active_start_time = 010000, @freq_interval = 14, @freq_subday_type = 1, @freq_subday_interval = 0, @freq_relative_interval = 0, @freq_recurrence_factor = 0, @active_end_date = 99991231, @active_end_time = 235959
IF (@@ERROR <> 0 OR @ReturnCode <> 0) GOTO QuitWithRollback
-- Add the Target Servers
EXECUTE @ReturnCode = msdb.dbo.sp_add_jobserver @job_id = @JobID, @server_name = N'(local)'
IF (@@ERROR <> 0 OR @ReturnCode <> 0) GOTO QuitWithRollback
END
COMMIT TRANSACTION
GOTO EndSave
QuitWithRollback:
IF (@@TRANCOUNT > 0) ROLLBACK TRANSACTION
EndSave:
END
GO
-- Job Script generated by Cruncher - job |MyDatabase backup2|
-- Do Not Edit
BEGIN
BEGIN TRANSACTION
DECLARE @JobID BINARY(16)
DECLARE @ReturnCode INT
SELECT @ReturnCode = 0
IF (SELECT COUNT(*) FROM msdb.dbo.syscategories WHERE name = N'[Uncategorized (Local)]') < 1
EXECUTE msdb.dbo.sp_add_category @name = N'[Uncategorized (Local)]'
-- Delete the job with the same name (if it exists)
SELECT @JobID = job_id FROM msdb.dbo.sysjobs WHERE (name = N'MyDatabase backup2')
IF (@JobID IS NOT NULL) BEGIN
-- Check if the job is a multi-server job
IF (EXISTS (SELECT *
FROM msdb.dbo.sysjobservers
WHERE (job_id = @JobID) AND (server_id <> 0)))
BEGIN
-- There is, so abort the script
RAISERROR (N'Unable to import job ''MyDatabase backup2'' since there is already a multi-server job with this name.', 16, 1)
GOTO QuitWithRollback
END
ELSE
-- Delete the [local] job
EXECUTE msdb.dbo.sp_delete_job @job_name = N'MyDatabase backup2'
SELECT @JobID = NULL
END
BEGIN
-- Add the job
EXECUTE @ReturnCode = msdb.dbo.sp_add_job @job_id = @JobID OUTPUT , @job_name = N'MyDatabase backup2', @owner_login_name = N'sa', @description = N'No description available.', @category_name = N'[Uncategorized (Local)]', @enabled = 1, @notify_level_email = 0, @notify_level_page = 0, @notify_level_netsend = 0, @notify_level_eventlog = 2, @delete_level= 0
IF (@@ERROR <> 0 OR @ReturnCode <> 0) GOTO QuitWithRollback
-- Add the job steps
EXECUTE @ReturnCode = msdb.dbo.sp_add_jobstep @job_id = @JobID, @step_id = 1, @step_name = N'Step 1', @command = N'sp_Hmx_BackupDb ''MyDatabase'',''D:\Database\DbBackups'',''MyDatabase2.BAK''', @database_name = N'MyDatabase', @server = N'', @database_user_name = N'', @subsystem = N'TSQL', @cmdexec_success_code = 0, @flags = 0, @retry_attempts = 0, @retry_interval = 0, @output_file_name = N'', @on_success_step_id = 0, @on_success_action = 1, @on_fail_step_id = 0, @on_fail_action = 2
IF (@@ERROR <> 0 OR @ReturnCode <> 0) GOTO QuitWithRollback
EXECUTE @ReturnCode = msdb.dbo.sp_update_job @job_id = @JobID, @start_step_id = 1
IF (@@ERROR <> 0 OR @ReturnCode <> 0) GOTO QuitWithRollback
DECLARE @stDate as int -- default job start date is today
SET @stDate=0
DECLARE @today as datetime
set @today = DATEADD(day,7,GETDATE()) -- get start date
set @stDate = DATEPART(yy,@today)*10000 + DATEPART(mm,@today)*100 + DATEPART(day,@today)
-- Add the job schedules
EXECUTE @ReturnCode = msdb.dbo.sp_add_jobschedule @job_id = @JobID, @name = N'backup2', @enabled = 1, @freq_type = 4, @active_start_date = @stDate, @active_start_time = 010000, @freq_interval = 14, @freq_subday_type = 1, @freq_subday_interval = 0, @freq_relative_interval = 0, @freq_recurrence_factor = 0, @active_end_date = 99991231, @active_end_time = 235959
IF (@@ERROR <> 0 OR @ReturnCode <> 0) GOTO QuitWithRollback
-- Add the Target Servers
EXECUTE @ReturnCode = msdb.dbo.sp_add_jobserver @job_id = @JobID, @server_name = N'(local)'
IF (@@ERROR <> 0 OR @ReturnCode <> 0) GOTO QuitWithRollback
END
COMMIT TRANSACTION
GOTO EndSave
QuitWithRollback:
IF (@@TRANCOUNT > 0) ROLLBACK TRANSACTION
EndSave:
END
GO
Power corrupts and PowerPoint corrupts absolutely. - Vint Cerf
|
|
|
|
|
If I set my pool size is to 10,then 10 client connect to my database , what happend if 11th client request to connect to SQLSrever? Should it wait so one of 10th disconnect from databse or new pool create with size 10?
Mazy
"A bank is a place that will lend you money if you can prove that you don't need it." - Bob Hope
|
|
|
|
|
It will just create a new connection and add it to the pool. The 11th client will take the full overhead for connection creation.
Power corrupts and PowerPoint corrupts absolutely. - Vint Cerf
|
|
|
|
|
Sorry, I can't get it. New pool create or it will wait?
Mazy
"A bank is a place that will lend you money if you can prove that you don't need it." - Bob Hope
|
|
|
|
|
This[^] explains it better than I can.
brief summary: the 11th client in a 10 connection pool will wait for a connection to become free. If the wait exceeds the ConnectionTimeout property, an exception will be thrown.
Power corrupts and PowerPoint corrupts absolutely. - Vint Cerf
|
|
|
|
|
Thanks.
Mazy
"A bank is a place that will lend you money if you can prove that you don't need it." - Bob Hope
|
|
|
|
|
i
is there someone who know a database with the extension ".DTA" ,and which tools
can i open it ????
|
|
|
|
|
I hope this[^] helps
Josef
|
|
|
|
|
Has anyone ever used the .Data Provider Library[^] by ByteFX[^]? What are your opinions of it?
Thanks,
Josef
|
|
|
|
|
General 
News 
Suggestion 
Question 
Bug 
Answer 
Joke 
Praise 
Rant 
Admin 
Submit an article or tip
