UDA And SQL Data Access
Mar 14, 2007
Is it possible for a user-defined aggregate to perform basic DML operations through ADO.NET (read, update, insert, delete)?
Why would I want to do that, you might ask? Rather than carry forward an accumulation of data, what I want to do is insert the data into a temporary table and retrieve it at the Terminate method call.
I created an aggregate to do the above using VS2005. My aggregate compiles, and deploys through VS2005, but I get the following error when I attempt to run it in debugger:
Data access is not allowed in this context. Either the context is a function or method not marked with DataAccessKind.Read or SystemDataAccessKind.Read, is a callback to obtain data from FillRow method of a Table Valued Function, or is a UDT validation method.
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Sep 22, 2015
I'm trying to re-write my database to de-couple the interface (MS Access) from the SQL Backend. As a result, I'm going to write a number of Stored Procedures to replace the MS Access code. My first attempt worked on a small sample, however, trying to move this on to a real table hasn't worked (I've amended the SP and code to try and get it to work on 2 fields, rather than the full 20 plus).It works in SQL Management console (supply a Client ID, it returns all the client details), but does not return anything (recordset closed) when trying to access via VBA code.The Stored procedure is:-
USE [VMSProd]
GO
/****** Object: StoredProcedure [Clients].[vms_Get_Specified_Client] Script Date: 22/09/2015 16:29:59 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
[code]....
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Jun 30, 2015
I have a client who has SSMS installed on her laptop. She is able to connect to the SQL server via SSMS in the office and query data on the server.
She needs to be out of site often and doesn't have internet access. She asks if the data tables can be "backed up" or saved on her laptop, so she can look at them without worrying connecting to the server. I am not sure if this can be achieved, as SSMS is built for accessing a server, not a desktop. Myself never have this need. If I really need it, I would go to Microsoft Access and create an ODBC connection to the datatables. But this client thinks that Microsoft Access is beneath her.
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Jul 20, 2015
HowTo: Import data to MS SQL 2008 from password protected Access DB ?
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Jun 10, 2015
I have recently upgraded to SQL2014 on Win2012. The Access front end program works fine.
But, previously created Excel reports with built in MS Queries now fail with the above error for users with MS 2013. The queries still work for users still using MS 2007.
I also cannot create any new queries and get the same error message. If I log on as myself on the domain to another PC with 2007 installed it works fine, so I don't think it is anything to do with AD groups or permissions.
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Nov 12, 2015
We need to insert data/rows from a SQL Server 2014 database into MS Access database. The problem is, there are so many columns (100+) in the table and there are so many insert transactions of this kind (from different tables) that it is not very easy to write the code in VB.NET that lists all column names.
Both the Access and SQL Server tables have the same number of columns and the equivalent data types, so inserting is not really the problem. It's just that is there a way to do an insert statement in T-SQL that does not name all the columns?
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Oct 30, 2007
Hi guys,
I've been developing desktop client-server and web apps and have used Access and SQL Server Standard most of the time.
I'm looking into using SQL CE, and had a few questions that I can't seem to get a clear picture on:
- The documentation for CE says that it supports 256 simultaneous connections and offers the Isolation levels, Transactions, Locking, etc with a 4GB DB. But most people say that CE is strictly a single-user DB and should not be used as a DB Server.
Could CE be extended for use as a multi-user DB Server by creating a custom server such as a .NET Remoting Server hosted through a Windows Service (or any other custom host) on a machine whereby the CE DB would run in-process with this server on the machine which would then be accessed by multiple users from multiple machines??
Clients PCs -> Server PC hosting Remoting Service -> ADO.NET -> SQL CE
- and further more can we use Enterprise Services (Serviced Components) to connect to SQL CE and further extend this model to offer a pure high-quality DB Server?
Clients PCs -> Server PC hosting Remoting Service -> Enterprise Services -> ADO.NET -> SQL CE
Seems quite doable to me, but I may be wrong..please let me know either ways
Thanks,
CP
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Apr 22, 2015
When i am trying to start our hospital software based on SQL server 2000, it shows Following Error.Search Condition is not valid, (DBNETLIB) Connection Open (connect()). SQL server does not exist or excess denied. Due to Fetch data.I run our software in Windows 8.1, while it smothly runs in previous version of Windows XP and 7.
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Jul 24, 2015
When I execute the below stored procedure I get the error that "Arithmetic overflow error converting expression to data type int".
USE [FileSharing]
GO
/****** Object: StoredProcedure [dbo].[xlaAFSsp_reports] Script Date: 24.07.2015 17:04:10 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
[Code] .....
Msg 8115, Level 16, State 2, Procedure xlaAFSsp_reports, Line 25
Arithmetic overflow error converting expression to data type int.
The statement has been terminated.
(1 row(s) affected)
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Feb 5, 2007
is there a step by step paper to get there? here is what i need to consider. I Iwill have many customers that will need their own set of records and access pages "branded for their company" each customer will have many clients. I am hosting this application on a windows 2003 server with SQL 2005 server enterprise.
I am using windows authentication, I have created a username in windows, then i added the windows user in SQL management studio in security, granted "DB Read" and "DB write" and again under the database security tab. still from the web authentication fails. i must be nissing a step or two?
I expect to set up a username for each database as i setup new customers.
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Nov 1, 2006
HiI'm having problems following the tutorial on creating a data access layer - http://www.asp.net/learn/dataaccess/tutorial01cs.aspx?tabid=63 - when I try to compile in Visual Studio 2005 I get namespace could not be found. I followed exactly the tutorial - I created a dataset and added this code in my aspx page. <asp:GridView ID="GridView1" runat="server" CssClass="DataWebControlStyle"> <HeaderStyle CssClass="HeaderStyle" /> <AlternatingRowStyle CssClass="AlternatingRowStyle" />In my C# file I added these lines... using NorthwindTableAdapters; <<<<<this is the problem - where does this come from? protected void Page_Load(object sender, EventArgs e) { ProductsTableAdapter productsAdapter = new ProductsTableAdapter(); GridView1.DataSource = productsAdapter.GetProducts(); GridView1.DataBind(); }Thanks in advance
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Apr 23, 2015
I'm currently working on a BI architecture for a customer, and consider to propose the Power BI data catalog as a data distribution layer. The customer will use Power BI, but also has other BI tools.
Are data sets in the data catalog available to other clients than Power Query alone? E.g. are there OData feed endpoints available? If not, what would be the best way to give other tools access to the data?
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Jun 9, 2013
I have two database(MYDB1 , MYDB2) on two different server's(SERVER1 , SERVER2) . I want to create an store procedure in MYDB1 on SERVER1 and get some data from a table of MYDB2 on SERVER2. How can i do this?
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Jul 13, 2015
I'm using a legacy application built using VB5 and SQL Server 7. After recompiling it, and putting the database in SQL Server 2012. I want to access the current login user using the SQL function SUSER_SNAME().
This is the code.
Set rdoRes = goDatabase.Connection.OpenResultset("select suser_sname()")
But I'm unable to get the current user login in the application. If I write any other SQL statement instead of this, then it runs. But only this statement is not running. Is there any security reasons for this?
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Sep 9, 2015
I have a table that is returning rows from a table query. It seems I have done it before but I cannot seem to get the right procedure to obtain the values. I will paste in the code below in which you will see my bad attempts at accomplishing what I need.
Dim uid As String
Dim pw As String
Dim em As String, fn, ln, mi As String
Dim par As String
Dim Field, n, j As Integer
Dim JJ As Integer
[code]...
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May 28, 2015
how I can load the CSV file data into the sql server table. I know there are ways like bulk insert and other to load the csv file data into the table. But in my case the table doesn't exist and has to be created at the run time. With simple insert in temp table we do like select * into #temp from tablename and that creates the temp table. So. I need something like that which create the temp table and load the data into it. because the CSV file would have different number of columns and names so I can not create the table structure in advance. I have to create the table at run time.
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Aug 7, 2015
I have an MVC asp.net application that stores many records in a table on sql server, in its own system. used the system for 2 months, worked fine accessing, changing data.
Now that other users are logging in? there is cross coupling going on. one user gets the data from another users sql search.
In the mvc app it had used the get async method to read the ID record from the db, i set that to synchronous. no effect; the user makes their own login id but that does nt matter either.
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Sep 10, 2007
I have one column in SQL Server 2005 of data type VARCHAR(4000).
I have imported sql Server 2005 database data into one mdb file.After importing a data into the mdb file, above column
data type converted into the memo type in the Access database.
now when I am trying to import a data from this MS Access File(db1.mdb) into the another SQL Server 2005 database, got the error of Unicode Converting a memo data type conversion in Export/Import data wizard.
Could you please let me know what is the reason?
I know that memo data type does not supported into the SQl Server 2005.
I am with SQL Server 2005 Standard Edition with SP2.
Please help me to understans this issue correctly?
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Mar 20, 2004
Aaarrgghhhhhhh, still searchin' for a nice step-by-step article to learn data access (all insert delete update commands) with the SQL Server .NET Data Provider found in [System.Data.SqlClient] namespace....
Can anyone plz help me to find it?
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Jun 10, 2015
I Have a table with #Sample like below
=================================
#Sample
id int,
SSN varchar(20),
State varchar(2)
Sample Data:
ID SSN STATE
1 999-000-000 AB
2 979-000-000 BC
3 995-000-000 CD
=================================
We used filter logic based on the SSN & State.
We are passing these values through variables like
Declare @State varchar(2)
Declare @SSN varchar(20)
While run time these values are lets suppose @SSN = '999-000-000' & @State='ABC'
Now the Result is displayed with the state data Like 'AB' only.
Output: 1 999-000-000 AB
instead it should give system generated error.
Here I have 2 Questions:
1. Why it is taking 1st 2 Charecters?
2. Why it does not have any system generated for length?
I can do validation with Length function for these 2 variables however if have 100 variables then it should not feasible case. So, what is the reason behind?
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Nov 25, 2015
I have a view that give me the data of all the batched. Now I am using a query on view to get a single batched data. when I am using direct query it was taking 0 sec but when I am using Through view "select * from myView where batched=2" then its taking 30 mnt.
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Jul 7, 2015
We have a daily process, which copies millions of rows of data from one DB to another over Linked Server. Just checking on the best practise, are there more efficient ways than the Linked server to copy millions of rows of data from one DB to another? I checked bulk insert but that transfers the data from the file to DB not DB to DB.
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May 21, 2008
Can anyone tell me how to access data from Stored Procedures using data adapters? My task is to select a row which is valid with data particular value. Suppose i had to get all values of particular user after validating username and password. Can anyone give me some hint regarding store procedure and retriving data from stored procedure using data adapters ? How can i bind data to dropdownbox of one field in the table using datasets and data adapters? How can i insert data in database using data adapters?Can any one solve this?
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Oct 26, 2015
I have a scenarios where if I execute select * from tbl it should display the all the records without waiting to release any lock. For example suppose I have one table called tbl and one session is updating one records and not committed yet and in other session if i execute select * from table I can see all the records, for that records it can show me older version. but my select statement should not wait to commit another session and also it should not show the modified data.
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Sep 23, 2015
I'm new to sql server. Last week I made my first cube. Everything went fine. But when I want to explore the cube (from the explore panel in Visual Studio 2012) in Excel then I'm getting the error "Initialization of the data source failed".
Check your database server or contact your database administrator. Make sure the external database is available, and then try the operation again. If you see this message again, create a new datasource to connect to the database.
I'm using Sql Server 2012. Visual studio 2012. Excel 2013 on Windows 10
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Oct 29, 2007
How can I read data from XML-file with exported data from MS Access? Which a dataflow component do I have to use?
Thanks in advance.
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Dec 20, 2006
I'm stucked in a problem and I thought if you would be so kind as to helping me to resolve it.
I'm implementing a clustering algorithm plugin for text mining. I've already read the tutorials and sample codes provided by the MSDN Library.
Well... My problem is: I can't go through the data when the Predict method is called. I've read that this method implements the "core" of the custom algorithms. Here is a small snippet of my code for you to understand my doubt:
STDMETHODIMP ALGORITHM::Predict(/* [in] */ IDMContextServices* in_pContext,/* [in] */ DM_PREDICTION_FLAGS in_Flags,/* [in] */ IDMAttributeGroup* in_pPredAttGroup,/* [in] */ DM_CaseID in_CaseID, /* [in] */ ULONG in_ulCaseValues,/* [in] */ DM_ATTRIBUTE_VALUE* in_rgValues,/* [in] */ ULONG in_ulMaxPredictions,/* [in] */ ULONG in_ulMaxStates, /* [out] */ DM_ATTRIBUTE_STAT** io_prgPredictions,/* [out] */ ULONG* out_pulPredictions) {
for(UINT i=0;i<in_ulCaseValues;i++) {
DM_ATTRIBUTE_VALUE& dmattributevalue = in_rgValues;
ULONG iAttribute = dmattributevalue.Attribute;
if (iAttribute == DM_UNSPECIFIED)
continue;
double dblValue = ::DblContinuous(dmattributevalue.Value);
char buffer[129];
sprintf(buffer,"%f ",dblValue);
RENAN_Log::log(buffer);
}
return S_OK;
}
As you can see, I'm going through in_rgValues to get its values, but i'm only obtaining the first register of the table on the database. I need to roll over a kind of resultset so I could access all the registers I need. Is there any way to do so ?
I expected Predict() received a matrix containing all my data, but the only thing I noticed that could represent the data is that in_rgValues vector. So I can go through this vector, but it holds only the first register of the table in the database (that's what's being saved on my log). I need all of the registers in order to pre-process the data and implement my clustering algorithm.
Well... That's it... I would be very pleased if you could help me.
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Feb 17, 2007
Hi all,
We have access database with lots of data in it. I want to move all the dat to the new database which has completely differenet database structure (e.g different tables, different rows).
What I was thinking is that there are 2 ways. one is manually, which will take long tome probably, and the other is to rum queries that will move the data from access to the new sql express. The question is how to that. I know that I used onw CSV files exported for ms access, but now the queries will be much more complex and I will use more then one table for te query.
How can I query from 2 different databases, which from one I read data(access), and from the other I write data (express)?
Thanks alot.
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Jun 25, 2007
hi:
i want to ask that i have developed a web application using ado.net.actually the records are more than 50000,but when i populate my dataset,50000 records in it.it consumes a lot of recources and memory and the application goes down.i access the record in dataset through "Dataset.Tables.Rows.items".i want to decrease the load bcoz application run in efficient way.so tell me that how can i make application more efficient to keep the dataset or i will use datareader to access the record or if there is another way to achieve this so plz tell.
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Mar 13, 2008
Hi,
I'm trying to do a simple project that involves asking the user to input a name, age and grade from a webform and then inserting this as a new record into an sql server database. But I must be doing something wrong because it doesn't get inserted into my table.
The table (tblStudent) has 5 fields ( ID (an int, identity), Name (varchar), Age (int), Grade (int), Fees (automatically calculated based on what grade was input) ). This is my code:
1 using System;
2 using System.Data;
3 using System.Configuration;
4 using System.Web;
5 using System.Web.Security;
6 using System.Web.UI;
7 using System.Web.UI.WebControls;
8 using System.Web.UI.WebControls.WebParts;
9 using System.Web.UI.HtmlControls;
10 using System.Data.SqlClient;
11 using System.Web.Configuration;
12
13 public partial class _Default : System.Web.UI.Page
14 {
15 SqlConnection myConnection = new SqlConnection(WebConfigurationManager.ConnectionStrings[1].ConnectionString);
16
17 protected void Page_Load(object sender, EventArgs e)
18 {
19
20 }
21 protected void btnAdd_Click(object sender, EventArgs e)
22 {
23
24 float fees;
25
26 if (Convert.ToInt32(txtGrade.Text) < 5)
27 {
28 fees = 10000;
29 }
30 else
31 {
32 fees = 20000;
33 }
34
35 myConnection.Open();
36 SqlCommand myCommand = new SqlCommand("insert into tblStudent VALUES ('" + txtName.Text + "'," + Convert.ToInt32(txtAge.Text) + "," + Convert.ToInt32(txtGrade.Text) + "," + fees + ")", myConnection);
37 myCommand.ExecuteNonQuery();
38 myConnection.Close();
39
40 }
41 }
42
Can anyone help me out?
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May 25, 2001
I am migrating a database from Access97 to SQL 7 using DTS. The default conversion for an Access yes/no data type is to bit in SQL server. Has anyone had any experience with this??
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Jan 31, 2008
I'm looking for information how to access data from SAS. I develop a page.aspx.vb that uses gridview to access data from a SQL data base, but know I have been told that actual information is in SAS. I was told that ADO.Net can be use to access that data but I'm not sure where to go from their. If any of you can point me to the right direction that would be great.
Thank you
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