DataSet .xsd Use / Re-use Concepts?
Dec 6, 2006
Hi all,
I've asked this question on another forum on the 2nd October 2006 and has gone unanswered to date.
I'd like to discuss SQL Express DataSet controls use / re-use concepts.
As I have been so busy sorting out the ins-n-outs and the dos-n-dont's of database connections n usage I haven't had a chance to focus on this issue.
Let me exagerate to make my point.
Lets say I have 10 forms.
Each has the standard DataSet, BindingSource, TableAdapter, and BindingNavigator.
Each form has the exact same general (broad scope: select * from myTable, myTable2 etc) query.
My solutions explorer has 1 Dataset .xsd for each forms query:
myDataset01.xsd
myDataset02.xsd
myDataset03.xsd
....
myDataset10.xsd
Is this how I should handle the datasets?
Keeping all dataset/querys seperate. One for each form. And possible multiples for each form?
(In case I want to adjust the number of returned fields on a specific form.)
Or is there a better way (not thru code) to have each form point to the same dataset controls?
i.e. have form2 thru form10 point to the datacontrols on form1? (doesn't sound right now that I've written it.)
Or is there a better way (not thru code) to have each form point to the same Dataset .xsd?
And should I?
i.e. reuse the one Dataset .xsd.
At the moment I'm thinking its all just text any way.
And each dataset has to be reconnected and data retrieved from the database anyway.
So does it really matter?
As I recall, I was having so many crashes when setting up the dataset .xsd that I found it was safer to have just one dataset per query.
I've ordered VS 2005 Pro and hope its more stable.
-----
I've also found that if I update the SQL Express Table thru Management Studio
(and I believe thru the database explorer in the vb.net IDE) that the .xsd file gets lost.
i.e. I have to go thru and duplicate the changes.
Is there an easier way?
Thanks,
Barry G. Sumpter
Currently working with:
Visual Basic 2005 Express
SQL Server 2005 Express
Developing Windows Forms with
101 Samples for Visual Basic 2005
using the DataGridView thru code
and every development wizard I can find within vb.net
unless otherwise individually stated within a thread.
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Sep 7, 2007
Hi,
What are top & main priority concepts that each realtime developer should/must know in SQL Server?
Versions 2000 & 2005
I am new to SQL Server.
Thanks
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Jun 30, 2000
I heard from my friend that, in "Oracle 8i", they have Array concepts.
Is there any "ARRAY CONCEPTS" available in SQL Server 7.0?. I have seen in BOL, there they have given command like,
"SetToArray(«Set»[, «Set»]...[, «Numeric Expression»])"
Like 'C'-Language, can we able to store datas in that. If that so, can anyone give explanations on that.
thanks in advance.
Srinivasan
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Jun 17, 2006
I'm struggling to find anywhere some recommended techniques for synchronizing two databases.
I am writing a smart-client app that will have its own database, and then connect and synchronize with the server when available.
Can somebody send me some links that discusses some of these ideas in detail?
Thanks
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May 26, 2015
I have a report with multiple datasets, the first of which pulls in data based on user entered parameters (sales date range and property use codes). Dataset1 pulls property id's and other sales data from a table (2014_COST) based on the user's parameters. I have set up another table (AUDITS) that I would like to use in dataset6. This table has 3 columns (Property ID's, Sales Price and Sales Date). I would like for dataset6 to pull the Property ID's that are NOT contained in the results from dataset1. In other words, I'd like the results of dataset6 to show me the property id's that are contained in the AUDITS table but which are not being pulled into dataset1. Both tables are in the same database.
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Oct 1, 2015
I have a small number of rows in a dataset, Table 1. There is a CLOB on a large dataset, Table 2. They join on a PK. I would like to retrieve this CLOB and add it to the data flow for Table1. In short I want to emulate the following:
Table 1:Â Small table without CLOB, 10 rows.Â
Table 2: Large table with CLOB, 10,000,000 rows
select CLOB
from table2
where pk = (select pk from table1)
I want this to return the CLOBs for the small number of rows in Table 1. The PK is indexed obviously so it should be a fast look up.
Table 1 and Table 2 live on different Oracle databases. How do I perform this operation efficiently in SSIS? It seems the Lookup and Merge Join wont do this.
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May 27, 2015
I have a report with multiple datasets, the first of which pulls in data based on user entered parameters (sales date range and property use codes). Dataset1 pulls property id's and other sales data from a table (2014_COST) based on the user's parameters.
I have set up another table (AUDITS) that I would like to use in dataset6. This table has 3 columns (Property ID's, Sales Price and Sales Date). I would like for dataset6 to pull the Property ID's that are NOT contained in the results from dataset1. In other words, I'd like the results of dataset6 to show me the property id's that are contained in the AUDITS table but which are not being pulled into dataset1. Both tables are in the same database.
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May 21, 2007
I found out the data I need for my SQL Report is already defined in a dynamic dataset on another web service. Is there a way to use web services to call another web service to get the dataset I need to generate a report? Examples would help if you have any, thanks for looking
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Oct 12, 2007
Is there any way to display this information in the report?
Thanks
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May 7, 2008
Hi,
I have a stored procedure attached below. It returns 2 rows in the SQL Management studio when I execute MyStorProc 0,28. But in my program which uses ADOHelper, it returns a dataset with tables.count=0.
if I comment out the line --If @Status = 0 then it returns the rows. Obviously it does not stop in
if @Status=0 even if I pass @status=0. What am I doing wrong?
Any help is appreciated.
ALTER PROCEDURE [dbo].[MyStorProc]
(
@Status smallint,
@RowCount int = NULL,
@FacilityId numeric(10,0) = NULL,
@QueueID numeric (10,0)= NULL,
@VendorId numeric(10, 0) = NULL
)
AS
SET NOCOUNT ON
SET CONCAT_NULL_YIELDS_NULL OFF
If @Status = 0
BEGIN
SELECT ......
END
If @Status = 1
BEGIN
SELECT......
END
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Apr 11, 2008
i have two datasets.one dataset have old data from some other database.second dataset have original data from sql server 2005 database.both database have same field having id as a primary key.i want to transfer all the data from first dataset to new dataset retaining the previous data but if old dataset have the same id(primary key) as in the new one then that row will not transfer.
but if the id(primary key) have changed values then the fields updated with that data.how can i do that.
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Dec 19, 2006
Hi,
I have two datasets in my report, D1 and D2.
D1 is a list of classes with classid and title
D2 is a list of data. each row in D2 has a classid. D2 may or may not have all the classids in D1. all classids in D2 must be in D1.
I want to show fields in D2 and group the data with classids in D1 and show every group as a seperate table. If no data in D2 is available for a classid, It shows a empty table.
Is there any way to do this in RS2005?
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Sep 3, 2015
Using this IIF statement:
=CountDistinct(IIF(Fields!Released_DT.Value = Fields!Date2.Value, Fields!Name.Value,
Nothing))
Released_DT = a date - 09/03/2015 or 09/02/2015
Date2 = returns another date value in this case 09/03/2015
What I'm trying to do is: count distinct number of people (Fields!Name.Value) if the Relased_DT = Date2.My IIF statement is returning a zero value.
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Apr 5, 2007
Hi every body...
I have a probleme
I have a web Services which contains a method getValue(IDEq (int), idIndicator(int), startTime(dateTime), endTime(dateTime))
I need to call this method. But my problem is how pass parameter ?
I see the tab Param but it isn't work as I wait,... maybe I do a mistake...
I want that statTime and endTime are select by the user via a calendar for example...
now idIndicator and idEq was result of an other dataSet from a xml datasource...
But I don't how integrate dynamically... I try to enter a parameter via the param tab, and create and expression :
=First(Fields!idEq.Value, "EquipmentDataSet")
but when i execute the query, the promter display <NULL>...
So I don't know how to do and if it is possible !
I hope someone can help me !
Thank you !
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Dec 3, 2007
Hi experts,
I'm not sure my design is normal or not. Please give me some advice.
I've a dataset and query by a field name 'companyid'.
select * from companyid where companyid = @icompany which @icompany is a input field.
if user select all, i'll send 0 to @icompany then I need to select all records.
question 1. How can I get all records? (i think about this query select * from companyid <> 0)
if user select for example companyid = 1, i'll send 1 to @icompany and the query work fine.
question 2. How can I change the query to adopt this 2 condition?
Thanks a lot,
Jeff
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Feb 22, 2007
I am faced with a common situation but there is a little twist that makes it unique and has me stumped. Hopefully someone can point me to a solution or give me enough guidance to figure it out.
Here is the situation, I am loading an XML file into a Dataset and need to update SQL tables from that Dataset but the tables are slightly different than in the DataSet. I am using C#, asp.net 2.0, visual studio 2005 and sql server 2005.
When I loaded the XML into the Dataset, the Dataset contained 19 tables. I individually loaded each table from the Dataset and determined from that which tables I needed and didn't need as well as determinined which fields I needed or not. I used this information to create my SQL tables.
Briefly, when creating the SQL tables, I used the dataset table name as the SQL table name and used the same column names as well. the only difference from the Dataset tables and SQL tables is 1 column has a different name (or to be more specific, a column exists in the datset that does not exist in the sql table and a column exists in the SQL table that does not exist in the dataset table). Also, some tables in the dataset do not exist in the sql Database.
I know that I can spin through each row of the tables I need in the Dataset and create an insert command from the row data and insert that into the SQL table but I have 11 tables to do that with. I would like to take advantage of ADO.NET and push the datset information into sql data but I am confused on how to do this.
I am confused because not all tables in the dataset are represented in the sql database and though the tablenames and most of the columns have the same name, it is not an exact fit.
Can anyone point me to a solution or give me a good game plan that I can search on to help me load my dataset info to a sql DB.
I appreciate any help I can get.
Thanks.
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Aug 24, 2007
hi developers
i've a table named users where i store the city id ,
this city id -> citymaster (cityid,stateid)->state master (cityid,stateid) ->country master (countryid,stateid).
now i need to make the query fetches the columns like this
username,cityid,stateid,countryid
how can i do this
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Jun 5, 2008
I using a stored procedure to update profile...
set ANSI_NULLS ON
set QUOTED_IDENTIFIER ON
GO
-- =============================================
-- Author:
-- Create date:
-- Description:
-- =============================================
ALTER PROCEDURE [dbo].[SP_UpdateProfile]
-- Add the parameters for the stored procedure here
@regUserID nvarchar(20),
@regName nvarchar(50),
@regEmail nvarchar(50),
@regMobile nvarchar(10),
@regPinCode nvarchar(10),
@regCity nvarchar(12),
@regState nvarchar(12),
@RValue int output
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT ON;
-- Insert statements for procedure here
UPDATE tblUserDetails
SET
regName= @regName,
regEmail= @regEmail,
regMobile= @regMobile,
regPinCode= @regPinCode,
regCity= @regCity,
regState= @regState
WHERE regUserID=@regUserID
END
here i updating the profile according to the userID..
My doubt is how to get these various values selected in a dataset and how to retrieve from tat dataset... please friends help me out...
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Jun 8, 2008
I am using storedprocedure for a process... i am selecting 4 variables from the stored procedure as a ouput parameters.. now please help me in working with a dataset to collect the 4 variables and read the variables from the dataset...
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Jan 17, 2005
Hey,
I am using the following stored procedure, but as it is now it returns 2 datasets. I need it to return only 1.
ALTER PROCEDURE dbo.Test2
(
@Location varchar(250),
@FromDate datetime,
@ToDate datetime
)
AS
SET NOCOUNT ON
CREATE TABLE #Temp1 (themonth varchar(12), theyear varchar(12), averagedaystofilltotal float, averagefillratetotal float,
delaytimetotal float, responsetimelagtotal float)
INSERT INTO #Temp1(themonth, theyear, averagedaystofilltotal, averagefillratetotal, delaytimetotal, responsetimelagtotal)
EXEC rptStatsGraphicalYEARoverYear @Location, @FromDate, @ToDate
Create table #Temp2(averagedaystofilltarget float, averagefillratetarget float, responsetimelagtarget float)
INSERT INTO #Temp2(averagedaystofilltarget, averagefillratetarget, responsetimelagtarget)
EXEC Test1
SELECT * FROM #Temp1
Select * from #Temp2
drop table #Temp1
drop table #Temp2
Would anyone have any suggestions on how to modify this procedure so that it returns only one dataset, but yet still keeps the data seperated? Or is this even possible?
Thanks
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Jul 9, 2006
ok, i have a question.
im developing an application, and want to know some pro's and con's with using a dataset or using direct connection to database...
also a breif description of what a dataset is would be very handy...
Thanks, Justin
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May 22, 2008
hi
i m working on ERP with VB.Net and SQLserver2005.
i have some problem with that query.
In the here is two administrator
1- administrator
2-HR administrator
in the table,code written on login srceen and query is following.
SELECT userGroupMaster.groupName FROM userGroupDetails INNER JOIN userGroupMaster ON userGroupDetails.groupName = userGroupMaster.groupName INNER JOIN UserNameMaster ON userGroupDetails.userName = UserNameMaster.UserName WHERE (UserNameMaster.UserName = '" & gl_strUserName & "')
whenever i execute it then error comes due two administrator.
I wanna use dataset in that query to read first administrator.
Ashish
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May 30, 2007
i am having a stored procedure and i want to use dataset to retrieve the first row of my table.
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Jun 4, 2007
hi,
how do I get value from second dataset (in multi dataset report)
in some function it provide scope parameter like
Sum(Fields!amount.Value, "DS2")
but now I need to show the value without using function
thks,
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Apr 2, 2008
Hi all,
If i have dataset in Dotnet Code,Can i use that dataset to report design?
Any body know.
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Jul 24, 2007
I have come into a company where my predesessor used a TON of differently named RDS files to connect to the same SQL Server Database; the same connection string, login id, etc. My suspicion is that he thought that datasources were the same as datasets and created one for each. I can't find a difference in any of them; except their name.
Is there any good reason to do this?
Should they all have been changed to be something generic like "ConnectTo{servername}Production.RDS (instead of {Report Name}.RDS)??? What is the easyiest way to change them all to the same RDS file?
Any thoughts?
Thanks,
Keith
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Apr 26, 2008
Hi everybody!
Can we have more than one DataSet in one list?
Thanks for your help!
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Jan 16, 2007
How to transfer data in a table in dataset to a table in sql server ?
i.e. I want to transfer the table values in excel to a table in sql server. I have populated the excel table in a dataset. I just want to know how to transfer from dataset to sql server.
Thanks
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Jan 24, 2007
I have a dataset that uses generated stored procedures to do its select, insert, update, delete. I am inserting a row to that dataset, and after the update, using the ID of newly created row. This worked just fine until I added triggers to some of the tables on my DB, and now, when I insert a row, the row's ID is not available after the update (it's 0) Any idea what happened / what I have to do to fix this? Thnx!
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Feb 15, 2007
Hello Team
i want to insert more than one row to the dataset before update the sqladapter for ex i want to insert rows for orderlines then i send them all to sql by updating adapter
is it done by javascript ? because when i press the button a postback hapend then it clears the dataset so the new row clears the old one
any idea Thanks lot
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Feb 26, 2007
Hi, I am trying to figure out how to update a dataset. Below is my sample code but it gives me this error on the mySqlDataAdapter.Update line.Dynamic SQL generation for the UpdateCommand is not supported against a SelectCommand that does not return any key column information. I looked around and it seems like I'm supposed to add a Primary Key but I did that and still get nothing. Below is my page load code... it is based on the quickstart at http://quickstarts.asp.net/QuickStartv20/howto/doc/adoplus/UpdateDataFromDB.aspx but I'm still having trouble and not sure what I'm missing. 1 // Create a new Connection and SqlDataAdapter
2 SqlConnection myConnection = new SqlConnection("Server=localhost;uid=user;pwd=password;database=northwind");
3 SqlDataAdapter mySqlDataAdapter = new SqlDataAdapter("Select * from Customers", myConnection);
4 DataSet myDataSet = new DataSet();
5 DataRow myDataRow;
6
7 // Create command builder. This line automatically generates the update commands
8 // for you, so you don't have to provide or create your own.
9 SqlCommandBuilder mySqlCommandBuilder = new SqlCommandBuilder(mySqlDataAdapter);
10
11 // Set the MissingSchemaAction property to AddWithKey because Fill will not cause
12 // primary key & unique key information to be retrieved unless AddWithKey is specified.
13 mySqlDataAdapter.MissingSchemaAction = MissingSchemaAction.AddWithKey;
14 mySqlDataAdapter.Fill(myDataSet, "Customers");
15
16 showData(myDataSet);
17
18 // Set PK of table to CustomerID ??
19 DataColumn[] pk = new DataColumn[1];
20 pk[0] = myDataSet.Tables["Customers"].Columns["CustomerID"];
21 myDataSet.Tables["Customers"].PrimaryKey = pk;
22
23 // Edit some data
24 myDataSet.Tables["Customers"].Rows[0]["ContactName"] = "Maria Anders2";
25 //DataRow myDataRow1 = myDataSet.Tables["Customers"].Rows.Find("ALFKI");
26 //myDataRow1["ContactName"] = "Maria Anders2";
27
28 showData(myDataSet);
29
30 //Update DB
31 mySqlDataAdapter.Update(myDataSet, "Customers");
32 Thanks!
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Feb 27, 2007
I have a class that works fine using the SQLDataReader but when I try and duplicate the process using a Dataset instead of a SQLDataReader it returnsa a null value.
This is the code for the Method to return a datareader
publicSqlDataReader GetOrgID()
{
Singleton s1 = Singleton.Instance();
Guid uuid;
uuid = new Guid(s1.User_id);
SqlConnection con = new SqlConnection(conString);
string selectString = "Select OrgID From aspnet_OrgNames Where UserID = @UserID";
SqlCommand cmd = new SqlCommand(selectString, con);
cmd.Parameters.Add("@UserID", SqlDbType.UniqueIdentifier, 16).Value = uuid;
con.Open();
SqlDataReader dtr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
return dtr;
This is the code trying to accomplish the same thing with a Dataset instead.
public DataSet organID(DataSet dataset)
{
Singleton s1 = Singleton.Instance();
Guid uuid;
uuid = new Guid(s1.User_id);
string queryString = "Select OrgID From aspnet_OrgNames Where UserID = @UserID";
SqlConnection con = new SqlConnection(conString);
SqlCommand cmd = new SqlCommand(queryString, con);
cmd.Parameters.Add("@UserID", SqlDbType.UniqueIdentifier, 16).Value = uuid;
SqlDataAdapter adapter = new SqlDataAdapter();
adapter.SelectCommand = cmd;
adapter.Fill(dataset);
return dataset;
}
Assume that the conString is set to a valid connection string. The Singlton passes the userid in from some code in the code behind page ...this functionality works as well.
So assume that the Guid is a valid entry..I should return a valid dataset but its null.
Additionally if I change the sql query to just be Select * From aspnet_OrgNames I still get a null value...I am assuming I am doing something wrong trying to fill the dataset.
Any help would be appreciated.
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Mar 1, 2007
Have an XML file that i load in to a Dataset. works fine, it builds its own scheme perfectly.
I loop through that data to load a check list which also works wonderfully.
two questions based on that.
1) can i add a column after the fact? I want to basically update the the info in the dataset to store if the record was checked in the check list. if not, i can manipulate one of the already defined columns, but i would rather not.
2) what is the best way to update data with in the dataset? Never really done anything but pull data from one. how do i locate the correct row to update ("select name from tbl where name = " + checklist.items[index].tostring(); update row)
sorry for the fairly basic question. i appreciate the help.
Justin
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