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Thank you for your advice. I already used Interbase in the past, it is a good database but not light enough for what I intend to do.
I would most probably choose it for professional clients running on a network (I've read SQLite is not good for transactionnal network access), but my needs are too basic even for Interbase.
Note - I don't say for FireBird since I don't know it.
Yarp
http://www.senosoft.com/
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Hi,
I have a problem with and app that is connected to an SQL 2000 database
The user got a new server dual CPU 3.2 GHz Pentium 4 with 2G memory and the app is slower compare with the old machine a dual CPU 755 MHz Pentium 3 with 512 memory.
If you use the TCP/IP connection in ODBC driver, the new machine is very slow.
If you use Name Pipe in ODBC, both machine a doing well.
The old machine it is working well with both TCP/IP and Pipes.
Does anybody have any idea why it is such a big difference between TCP/IP and pipes for the new machine? The different is from 1 minute to 10 minutes for an operation.
Any thoughts are welcome
Thanks,
Florian
-- modified at 15:01 Friday 16th June, 2006
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my guess is Named-Pipes and ODBC are better at buffering, while TCP/IP works to a point then TCP/IP becomes saturated and network performance decreases.
(but there's a lot of variables here)
'g'
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I have a table "tbl_order" with to the fields "customer_number" and "date". there can be multiple rows with the same customer_number, but the date fields are allways unique.
these or potential rows in my table:
cust_no | date | item
---------------------------
21 2006-01-06 shovel
21 2006-03-05 axe
21 2006-05-05 widget
45 2006-05-01 fish tank
45 2006-05-02 ...
For every cust_no i want to retreive only the row with the earliest date. How can this be done?
what i want is this:
------------------------
21 2006-01-06 shovel
45 2006-05-01 fish tank
Any help would be greatly appreciated
/ Stefan
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//---------Below is code:----------------------------------------------------
string conn_str="Provider=MSDAORA.1;User ID=navuser2;Data Source=orcl;Password=navuser2";
OleDbConnection conn=new OleDbConnection(conn_str);
conn.Open();
OleDbCommand cmd = new OleDbCommand();
cmd.CommandText = "select * from test";
cmd.Connection = conn;
OleDbDataAdapter adap=new OleDbDataAdapter(cmd);
DataSet dtset=new DataSet();
adap.Fill(dtset,"test");
string ins= "insert into TEST values(30,'900')";
DataTable tab1;
tab1=dtset.Tables["test"];
DataRow r1;
r1=tab1.NewRow();
adap.InsertCommand=new OleDbCommand(ins,conn);
tab1.Rows.Add(r1);
adap.Update(dtset,"test");
conn.Close();
//------------------------------------------------------------------------
1.The above code is working fine for insert statements. How to use the above code in case if we are trying to update database with more than 1 updated row of dataset. e.g. instead of using "insert into TEST values(30,'900')";, use "update test set emp=100". Here we donot know how many rows will be updated in dataset.
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Hi,
I'm running SQL Server evaluation version, and it sould ne close to the 6 month expiry date. How do I check when it expires?
Regards,
ma se
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*solved* this is what you get for posting questions at 8:30pm local time *sleepy*
after some more digging i have noticed a second column that has a int, 0, 1 or 2, and it exactly correlates with the "fuzzy date". so a second flag is being used to achieve this
***
i am trying to convert data from one system (stored in MS SQL) into a different system stored in MySQL.
in the MS SQL some records are stored with a "fuzzy date", they only has a year, no day and no month. we have the same concept the new system, where we store the date as 00/00/1988
using a SQL client on MySQL with one of these dates i am told it is 01/01/1988, but if i issue the same query on the MySQL command line i am told the date is 00/00/1988, so i have to distrust what clients are telling me.
in the MS SQL database i have tried "enterprise manager version 8" and it is telling me the date is 01/01/1988, but the software (i have NO access to any source code for the old system) reports the date as "1988", no day and no month.
either the old system uses some flag somewhere to say "this is a fuzzy date" or the MS SQL client is "protecting" me from the invalid data.
in MSSQL the column is of type "datetime", and i have found dates that show as "01/01/1985" and "03/2001" in the old system, so i can rule out the theory that you cannot record data on the 1st January.
any pointers or bright ideas would be most welcome. i know something about MySQL but am learning MSSQL as i go along 
zen is the art of being at one with the two'ness
-- modified at 15:34 Thursday 15th June, 2006
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Look for ISDATE(), CAST(), CONVERT() DATEPART() and DATENAME() functions in BOL.
Farhan Noor Qureshi
if (this == this) thow this;
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Hi,
I am passing the customer id to DataBase and I want it should return the recordset. Can you pls let me know how to do it in ESQL. I am new to ESQL. It would be grate if you also let me know how to access each individual field.
Thanks
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Does this "ESQL" thing come with any sort of docs?
Farhan Noor Qureshi
if (this == this) thow this;
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Hi all,
Please help me its very urgent for me..
How we can disable and enable the unique constraint for an index.
I have tried ALTER Table_name disable CONSTRAINT constraint_name; But it is giving error no such constraint is present..
This unique constraint is on index...and not on single index it is on multiple index...
Please try to solve my problem
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This link[^] gives a pretty good explanation for all uses of constraints.
Chris Meech
I am Canadian. [heard in a local bar]
When no one was looking, every single American woman between the ages of 18 and 32 went out and got a tatoo just above their rumpus. [link[^]]
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What DB are you using?
Farhan Noor Qureshi
if (this == this) thow this;
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i have a data base called DBTest on machine one and contains a table called DTTable1
and i have the same database DBTest on machine Tow.
now i filled the data into DTTable1 on machine one from "A" to "K"
and i filled the data from "L" to "Z" on machine Two.
What i want is to Combine the data from DTTable1 in the Machine One with the DTTable1 on Machine Two.
How that can be done?
Faris Madi
Nothing Comes Easy (N.C.E.)
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Hi!
It depends if you want to combine the content within a SQL statement without transferring the data permanently or if you want to create a third table that physically contains the combined data.
If you need a query and you do not want to tranfer the data
1. create a linked server from machine one to two (or the other way round; you can do this in SQL Server management studio (2005) or Enterprise Manager (2000)
2. select * from DBTest.dbo.DTTable1 union all two.DBTest.dbo.DTTable1
As an alternative to 1 you can also use OPENQUERY or OPENROWSET (see SQL Server Books Online for details).
If you want to move the combined data into a third table use DTS (SQL 2000) or SSIS (SQL 2005). With these tools it is quite easy to move data from one table into another.
Hope this helps.
Regards,
Rainer.
Rainer Stropek
Visit my blog at http://www.cubido.at/rainers
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Hi,
I am new for database query. I am using Ms Access to store data. In Ms Access the date is in format of MM-DD-YYYY. I want to retrive that date in DD-MM-YYYY format. Can any body tell me how to convert this date format.
Thanks in advance.
Mike
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Format$(mydate,"dd-mm-yyyy")
----------
Some problems are so complex that you have to be highly intelligent and well informed just to be undecided about them.
- Laurence J. Peters
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Hi,
I'm wondering if it's possible to join ALTER TABLE statements so I don't have to have a bunch of ExecuteNonQuery commands.
ALTER TABLE Products ALTER COLUMN ItemNumber TEXT(15)
ALTER TABLE ItemsSold ALTER COLUMN ItemNumber TEXT(15)
thanks,
Ron
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As far as I know this is not possible.
Regards,
Rainer.
Rainer Stropek
Visit my blog at http://www.cubido.at/rainers
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You could create this stored procedure, then just execute it with a delimited list of table names:
CREATE PROCEDURE AlterMyTables
@cTablesToAlter varchar(500)
AS
declare @cSQL varchar(100)
declare @nLoc int
declare @nLoc2 int
select @nLoc = 1
while (@nLoc<len(@cTablesToAlter))
begin
select @nLoc2 = CHARINDEX(',',@cTablesToAlter,@nLoc + 1 )
if (@nLoc2=0)
select @nLoc2 = len(@cTablesToAlter) +1
select @cSQL = 'ALTER TABLE ' + SUBSTRING(@cTablesToAlter,@nLoc,@nLoc2-@nLoc) + ' ALTER COLUMN ItemNumber TEXT'
exec(@cSQL)
select @nLoc = @nLoc2 +1
end
----------
Some problems are so complex that you have to be highly intelligent and well informed just to be undecided about them.
- Laurence J. Peters
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Thanks Eric, I'll give it a try.
Ron
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I'm working on my first data base project. We're recording some historical information from a product, and it seems natural to go ahead an put it in a data base for later retrieval.
Here are some of the things I'm considering:
ODBC: I want independence from the actual DBMS. I'll provide a 'default' data base with the product, but want to give the customer the option of having us record our information directly in his data base.
SQL Server 2005 Express: I'm looking at this for my 'default' data base. It's free, and the install appears to be easy.
MFC: Yeah, I know MFC is horribly old school, but this is an add-on to an existing MFC-based product. .NET is out of the question. We're developing using VS.NET 2003, by the way.
Service: I don't know if it makes a difference, but this will probably be implemented as a service.
Do you guys have any sources or suggestions for 'best practices', tips, or "do's and don'ts"?
Software Zen: delete this;
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