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MySQL Has the following core functions:
connect(), query(), store_result(), fetch_[row, feild]() num_rows(), num fields(),
escape_string(), and close()
There are others, but those are the most used.
Data returned is all characters, and and you get to the data by:
row=fetch_row(query_result);
and row[N] = field N, it's that simple!
Is there anything that simple for ADO or ODBC? I'm trying to port a MySQL app to SQL Server, and having a hard time finding anything that simple. My real concern is handling user-defined queries. In MySQL it was as easy as:
con=connect();
query(con, user_sql);
result=store_restult(con);
feilds=num_fields(result);
while (row=fetch_row(result)){
for (f=0; f
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Hi
I want to develope an client application to update/retrieve data from a remote database namely SQL on some maching over the Internet. For example, application to connect to TheCodeProject database to retrieve the appropriate data, format it then output it. In the essence, it just acts like off-line forum reader , without having open the browser and offer some extra functionality like saving, attaching files, etc.... However i m still in the dark of how about to do it. I would like to ask some questions related to the matter:
1) Is C# the most appropriate language to do this?
2) What sort of configuration does the MySQL server needs to apply for my application to make a connection?
3) I want to make the interface of the application Outlook liked, how would i do so?
Thank alot for reading this and looking forward to receive your enlightment!
Best Regard
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I have windows xp proffesional.I install SQLServer2000 enterprise edition.When I wanted to install "SQL Server Components" it tell me it can't install server tools in this operating system and installed only client tools.
After installation I run Query analyzer.I have to connect to SQL Server.My compuetr name is 'MAZY' and I typed its name the name of server name.But when I clicked to connect to server I got this error:
---------------------------
SQL Query Analyzer
---------------------------
Unable to connect to server MAZY:
Server: Msg 17, Level 16, State 1
[Microsoft][ODBC SQL Server Driver][Shared Memory]SQL Server does not exist or access denied.
---------------------------
OK
---------------------------
I tried "windows authenication" and "SQL Server authenication" too.I get the same thing.In enterprise manager when I want to register my server I get the same error.Any idea? 
Mazy
"If I go crazy then will you still
Call me Superman
If I’m alive and well, will you be
There holding my hand
I’ll keep you by my side with
My superhuman might
Kryptonite"Kryptonite-3 Doors Down
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The error message about not being able to install server tools actually means it coudn't install SQL Server. This is probably because you're running a desktop OS instead of a server OS.
You should have a second disk with the Personal Edition on it, which will install on your machine.
- SQL Server 2000 Enterprise Edition and Standard Edition run on Microsoft Windows 2000 Server, Windows 2000 Advanced Server, Windows 2000 Datacenter Server operating systems, Microsoft Windows NT Server version 4.0 Service Pack 5 (SP5) or later, and Windows NT Server 4.0 Enterprise Edition with SP5 or later
- SQL Server 2000 trial software and SQL Server 2000 Developer Edition run on the operating systems listed above for the Enterprise and Standard Editions as well as on Windows XP Professional, Windows XP Home Edition, Windows 2000 Professional and Windows NT Workstation 4.0 with SP5 or later.
- SQL Server 2000 Personal Edition and SQL Server 2000 Desktop Engine run on the operating systems listed above for Enterprise and Standard Editions, as well as on Windows 98, Windows Millennium Edition (Windows Me), Windows XP Professional, Windows XP Home Edition, Windows 2000 Professional, and Windows NT Workstation 4.0 with SP5 or later.
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Thank you very much. 
Mazy
"If I go crazy then will you still
Call me Superman
If I’m alive and well, will you be
There holding my hand
I’ll keep you by my side with
My superhuman might
Kryptonite"Kryptonite-3 Doors Down
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I have a table with two BLOB fields...
If I read one blob (using GetChunk), modify, then write back (using AppendChunk), then read the other blob, modify, and then write this back, the changes made to the first blob are lost during the Update...
This can be fixed by reading the two fields and then writing them...
Is this a known bug in ADO/Jet???
(this is running on Win2K, Access Database, Jet4SP6)
Blade[DMS]
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I'm developing a site (under 10,000 more like 5,000  ), and I was trying to decide which database software I should use. I want to create a database for news articles. We didn't want to spend the money for SQL or any such software mainly because we are a non-profit organization and money isn't easily attainable. We do have licenses for Access, but is this actually the best way to go? And if you have any software recommendations or if I should try a different approach (not a databse) such as text files for each new article. I know of MySQL, but I am unfamiliar with it. We are using IIS on Windows 2000 Server. Your opinions, please .
Thanks very much, Sean
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I don't think Access would handle it, in my experience it tends to fall over after about 5-10 simultaneous connections. I understand MS SQL is probably out of range, so you could well look to RDBMS's like MySQL or even PostgreSQL. However, make sure you consider support, with a commercial product you do have someone to yell at when it all goes a little wonky!
On the other hand, possibly consider using the DB as nothing more than a reference. i.e. store the actual news articles in an XML file, and then format these using XSL. You can then store both of these in a table which would reduce the size down, and you could probably get away with the performance. Keeping entire articles in a DB is probably not a good thing anyway, let alone when you're limited to Access!
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I have a text file that I am reading in from and want to store the information in a recordset until all the values in the text file are read in. I am using find to find the row to put the value into but once I update a value and do a movefirst I get an unspecified error.
//while
m_pRecs->MoveFirst();
m_pRecs->Find(strTemp.AllocSysString(),0,ADODB::adSearchForward);
if (!m_pRecs->adoEOF)
m_pRecs->Fields->Item["Value"]->Value = strValue.AllocSysString();
//end while loop
I have also tried filtering without success. Clearing the filter gives me problems. I don't want the db that I am using to change so this recordset is essentially just a place holder until the text file is read in and the values are pulled back out of the recordset. Any help will be greatly appreciated.
Bill
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You need to update the recordset...
Or may be you need to test if you can update the recordset...
Regards
Carlos Antollini.
Sonork ID 100.10529 cantollini
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I put a m_pRecs->Update() and it caused the same unspecified error as the MoveFirst(). Just for my info. Doesn't the movefirst call update if the recordset has changed, I could be wrong that is why I am asking.
Thanks for replying,
Bill
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Could it possibly be the way I am assigning the value.
m_pRecs->Fields->Item["Value"]->Value = strValue.AllocSysString();
That is a general field in an excel spreadsheet. I have changed it to text and it acted the same.
Bill
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What cursor are using you?
Carlos Antollini.
Sonork ID 100.10529 cantollini
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I am currently using static, but have tried dynamic.
Bill
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Hi cpians.
Can you recommend any OO databases? Have you used any with .NET?
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Hello,
I have some data in a XML format. I have successfully read the data in a dataset. Now I want to add that data in the database. Anybody have a clue?
I can succesfully do the other way (reading from the database and populate a dataset).
Best regards,
Alexandru Savescu
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Check Update() function of OleDbDataAdapter and GetChanges() of DataSet.
Mazy
"If I go crazy then will you still
Call me Superman
If I’m alive and well, will you be
There holding my hand
I’ll keep you by my side with
My superhuman might
Kryptonite"Kryptonite-3 Doors Down
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Thanks! I'd already discovered that, but didn't want to answer my own post
Best regards,
Alexandru Savescu
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Example from SQL Server Books Online: To bring a standby server up after the primary goes down:
-- Restore the initial database backup on the standby server.
USE master
GO
RESTORE DATABASE MyNwind
FROM MyNwind_1
WITH STANDBY = 'c:\undo.ldf'
GO
-- Apply the first transaction log backup.
RESTORE LOG MyNwind
FROM MyNwind_log1
WITH STANDBY = 'c:\undo.ldf'
GO
-- Apply the next transaction log backup.
RESTORE LOG MyNwind
FROM MyNwind_log2
WITH STANDBY = 'c:\undo.ldf'
GO
-- Repeat for each transaction log backup created on the
-- primary server.
--
-- Time elapses.. .. ..
--
-- The primary server has failed. Back up the
-- active transaction log on the primary server.
BACKUP LOG MyNwind
TO MyNwind_log3
WITH NO_TRUNCATE
GO
-- Apply the final (active) transaction log backup
-- to the standby server. All preceding transaction
-- log backups must have been already applied.
RESTORE LOG MyNwind
FROM MyNwind_log3
WITH STANDBY = 'c:\undo.ldf' -- QUESTION 1: Why not just use "WITH RECOVERY" here??
GO
-- Recover the database on the standby server,
-- making it available for normal operations.
RESTORE DATABASE MyNwind
WITH RECOVERY
GO
Question 2:
I dont understand the use of the "undo" file. I mean, before u bring the standby online, u're going to apply the last transaction log anyway. And I presume u BACKUP the last log WITH NO_TRUNCATE - so, all uncommitted transaction will be backed up.
And in this case, why do we need the "undo" file?
QUESTOIN 3:
I really dont understand:
>Database Maintenance Wizard
>"Specify Log Shipping Destination"
>Add
>"Allow database to assume primary role", and Database Load State: "NORECOVERY", "STANDBY".
I tried different options, and all resulting destination database became "Read only" whether i put them on "NORECOVERY" or "STANDBY".
I thought NORECOVERY and STANDBY assumes the same meaning as in RESTORE DATABASE WITH NORECOVERY/STANDBY.
In NORECOVERY case, I expect that I cannot even READ from the destination database (but, problem, I could read from it using SELECTs, in my little test?). In case of STANDBY, only read permitted, no write (okay, this has been confirmed and i have no problem)
And documentation for "Allow database to assume primary role" is as follows:
"Specify if the destination server should be setup to be able to function as a primary server."
what da?? All destination database has been marked "secondary" and "read-only" under database properties even after i checked the "Allow database to assume primary role" checkbox!?
what lousy documentation..
Help! Been reading on this all day and toying with it, but still havent found a clue as to why...
thanx, any help will be appreciated!
norm
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How do you autoprompt for an ADO connection in Visual C++?
The code below shows how it is done with VB.
Set DBConn = New ADODB.Connection
With DBConn
.Properties("Prompt") = adPromptAlways
.Open ("driver={SQL Server};server=" & gServer & ";database=" & gDatabase)
End With
Thanks in advance for you help
Bill Ferreira
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if you are working with MFC use CDatabase. Call Open and pass the following for the parameters: Open("", false, false,"ODBC;" ,TRUE)
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Hi
I'm using an Access database with the Jet engine for my application. There is a requirement for the user to take the database home (sounds like a job for database replication I here you say) and that would be great... However, the only documentation I have seen is in VB... DAO and JRO are the tools that the MSDN suggests but gives not examples.
I would like to provide this replication facility within my app and not have to force the user to open access and do it from there. can anyone help?
Thanks in advance
Steve
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I've done that programatically in Visual C++ a few years ago. But don't have the code with me (I'll look for it, can't promise you anything)
There is an article un MSDN:
Implementing Database Replication with JRO
Wich is pretty good, the downside: is in VB, but you should be able to translate it.
Is totally doable.
Andres Manggini.
Buenos Aires - Argentina.
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Hi,
Any body can guide on how to connect to AS400 DB2 files using C#?
Many Thanks,
Jassim Rahma
Jassim Rahma
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I need to develop an application for multi user (8 users / time) which MSDE will not allow me to do because it allows max 5 users/time. I personally like DBF files but I have a problem in saving the user's prefrences & password. Can any one guide me please?
Jassim Rahma
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