When you work with Visual Basic 2005 Express Edition on windows XP, and if your application contains references to SQL-databases, I have discovered that it is important that all identities be logged off before you open the particular identity where you want to work on your Visual Basic project. I have earlier assumed that it was only possible to work with Visual Basic on one identity, the one where the version was registered.
This assumption was not quite correct. Actually, you may run Visual Basic applications with SQL-references on all identities on XP, provided that no other identities that are using the SQL-server are currently running.
For example, suppose you start your computer and log on the identity James. Then you switch identity, but you actually don't log off James. Then you log on the John identity. There you discover that it is impossible to create a new SQL-database in Visual Basic's Data-connections view. An error message appears. Why is that? It is because the SQL-server is busy on the James-identity. To solve this problem you want to log off the John identity, don't just switch. Then log on the James identity again, and log off properly. All identities should now be logged off. Now you may log on the John identity again, and it is now possible to create an SQL database.
Concerning deploying applications for XP. This issue is similar to the one I just described. You cannot run the installation-file successfully on one identity if the SQL-sever is busy on another identity. You want to log off all identities before logging on the identity where you want to install the application. Same thing when you want to run the deployed application.
Question. Does this limitation exist only in the express-editions of Visual Studio 2005 as a drag on free-ware, or is it prevalent in commercial editions as well? I would like to know a little more about this before purchasing the standard or professional edition of Visual Studio 2005.
I added a connection (ADO.NET) object by name testCon in the connection manager - I wanted to programmatically supply the connection string. So I used the "Expressions" property of the connection object and set the connectionstring to one DTS variable. The idea is to supply the connection string value to the variable - so that the connection object uses my connection string.
Then I added a "Backup Database Task" to my package with the name BkpTask. Now whenever I try to set the connection property of BkpTask to the testCon connection object, by typing testCon, it automatically gets cleared. I am not able to set the connection value.
Then after spending several hours I found that this is because I have customized the connection string in testCon. If I don't customize the connection string, I am able to enter the "testCon" value in the connection property of the BkpTask.
I have a package that uses a for loop to iterate through an unknown amount of excel files and pull their data into a table. However, there will be cases when the file is corrupted or has some sort of problem so that either the transformation will fail or the excel data source will fail with an oledb connection error. Could anyone suggest a clean way to trap these errors? Specifically, the "Cannot Aquire Connection from Connection Manager", which is the excel connection.
This is probably a very silly question.I started learning ASP.net by following ASP.NET Unleashed. I am stuck where he wants me to open a connection to SQL Server database. I have just downloaded MSDE. But I dont know where to type this code and how to run it..so as to connect to the database.
<%@ Import Namespace="System.Data.SqlClient" %>
<Script Runat="Server">
Sub Page_Load Dim conPubs As SqlConnection
conPubs = New SqlConnection( "server=localhost;uid=webuser;pwd=secret;database=pubs" ) conPubs.Open() End Sub
</Script>
Connection Opened!
Now do i have to change the uid to SA ? (i had to assign one when i downloaded and installed MSDE?
am not very experienced in using DTS and really need your help. I have a dts package that i have scheduled to run every day. Here's what i want the package to do:
1. Check whether a value for a certain column in a certain row of a table in my database is 0 or 1. If it is 1, then 2. Run the dts task (which i have created and is working)
In other words, when the package is started, i want to execute a stored procedure or sql task or whatever, and if that returns 1 then i want to continue, if it returns 0 i want to finish the package without running the dts task. I'm sure there's a simple way to do this, but i could use your help...!
I downloaded SQLExpress and Visual Studio Express to my home computer. I built a simple database, adding data through theSQLexpress admin tool. I built a web page using MS Studio. I connected to the database and used the webpage for a few days. Then I restarted the computer. Now the web page won't open, and MS Studio won't open the MDF file in the App_Data folder. I can still see and work in the database through SQL server Express. The web page and the MSStudio attempt to connect to the mdf file both fail with this message: Cannot open user default database. Login failed.Login failed for user 'KAAAK/Administrator'. So it seems to be trying to connect as the Windows user. When I try to modify the connection to connect through a user/password I created in SQL manager, I get a message that the user is not a trusted SQL user. from web.config: <connectionStrings> <add name="ConnectionString" connectionString="Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|info.mdf;Integrated Security=True;User Instance=True;User ID=Admin;Password=12345" providerName="System.Data.SqlClient"/> </connectionStrings> That was changed from the original string created automatically by MS Studio <connectionStrings> <add name="stocksConnectionString" connectionString="Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|stocks.mdf;Integrated Security=True;User Instance=True;" providerName="System.Data.SqlClient"/> </connectionStrings> I am sure this is some simple problem, but why would the system refuse to access an mdf file it had already been accessing.? Thanks, Michael
not sure why I am having trouble here but I am using the following WHERE clause expecting to find all rows where any one of the the three keywords are present. ....WHERE Company.L_Keywords LIKE '%metal%' AND Company.L_Keywords LIKE '%tile%' AND Company.L_Keywords LIKE '%ceramic%' however it appears to finding only the rows where all three words are present in the L_Keywords field
This is a very simple question. How would a select satement be formated in the following example. SELECT Grade, Student_ID, First_Name, Last_Name FROM Scores WHERE (This is where I'm stuck and I know this is not the right formatting although I wish it were because it would make my life a little bit easier.) Student_ID = 115485, 115856, 568547, 965864, etc... I may have up to 100 specific student ids to put in this one statement. I know I can use the "WHERE Student_ID = 115485 OR Student_ID = 115856, OR Student_ID = 568547" but that would be alot of waste. Seems like there should be an easier way than using the "OR Student_ID =" for every entry. Can someone explain another way I can do this. Thanks in advance.
Hey, I have a pretty simple question.My query is throwing an error saying "Invalid column name 'subject'."The problem is that subject is a custom column I've made, well just look at the sql:SELECT a.ArticleID, subject=ISNULL((select subject from subjects),'') where subject='some subject'
I have already created package which loads a text file to database using the dts wizard in Enterprise Manager.How do I execute that package using visual basic?Please provide the Code!!!Thanks
Hi there. I am trying to use MDX code to create a measure in ProClarity. Please help!!
A store can be one of a number of ‘Brands’. The MDX segment below gives me the Sales Value of a selected item, but for Store Brand 'Brand1' only. This works fine - but how do I add a brand? That is, how do I see the combined Sales Value for the selected item for 'Brand1' and 'Brand2'?
Hoping someone could me with an ongoing indexing question that I have.
On my site, we have over the past 5 years developed what is emerging as a fairly complicated dbase structure, as features have been added to my site and relations have increased between different database tables, there has been a need to index fields in different ways, and in some instances field indexing has overlapped. For example we may have a table that has 5 fields (field1,field2,field3,field4,field5). A need to index field1 is requried because of a query that reads:
SELECT * From Table1 where field1=XXXXX
Additionally there may be a need to for another query that reads:
SELECT * From Table1 where field2=XXXXX
In this instance an index is placed on field2.... But, for example when there is the following query:
SELECT * From Table1 where field1=XXXXX and field2 = XXXXX
Is it necessary to set a new index on: field1,field2 ???
We have made the choice that yes, in fact there is...but now over time some of our tables have instances of single fields being indexed along with combinations of two single fields that have already been indexed, being indexed together. As tables have grown to over 1,000,000 records and having up to 15 or so indexes, we realize that the number of indexes maybe degrading performance. Also, indexes vary in type, e.g INT,BIGINT,Varchar fields... In the above instance, can we eliminate the multi-indexes and improve performance over all...?
On a second related question:
In the event that two tables are joined on a common field.
e.g. Select * from Table1,Table2 where Table1.field1=Table2.field1
Is it necessary to index both of these fields in tables: Table1 and Table2 ?
Hope someone can help, as we are looking to improve the efficiency of our tables as they continue to grow.
I need help. 160821A network error was encountered while sending results to the front end. Check the SQL Server errorlog for more information. I need help. Our SQL Server is crashing. The Database is still recovering. I can not kill any Process when the Server crashed. I shoot down and restarted the server. Nothing to do. I can not access to the database. It is recovering. How long? I do not know. What can be the reason of the recovering? Nor the event log of Windows NT or the log files of the SQL SERVER can help me.
Here is a part of the log file
23216Arithmetic overflow error for type %s, value = %f.
10915There are more columns in the INSERT statement than values specified in the VALUES clause. The number of values in the VALUES clause must match the number of columns specified in the INSERT statement.
99/01/19 01:14:25.69 spid25 bufwait: timeout, BUF_IO, bp 0x1bba600, pg 0x11b50, stat 0x801000/0x6, obj 0x23494814, bpss 0x124a2a0 99/01/19 01:14:27.15 ods Error : 17824, Severity: 10, State: 0 99/01/19 01:14:27.15 ods Unable to write to ListenOn connection '.pipesqlquery', loginname 'sa', hostname 'myserver'. 99/01/19 01:14:27.15 ods OS Error : 232, The pipe is being closed.
I have many views and views on these views. Is there anyone out there who might have a suggestion as to how I can keep them straight so that I won't lose track of what I made them for? I am starting to not remember why I made some, so I have to go back and try and remember. Any suggestion would be appreciated.
I have a new pc with xp on it,I have been coping data,files,projects,etc from my old pc onto my new over the network.
If I open Query Analyzer my databasese are there and it is all fine,but if I open ODBC I have no databases under System DSN. How do I go about that,I have many databases and tables in it,is there a way I can refresh it or something,it would have to be something simple,right???
Hi, can somebody help me with some verification SQL commands that I need to run on an Oracle database?
In the Oracle table 'FEE', if the 'FEETYPE' column has a value of '3' for a record, then the 'PERCENTAMOUNT' column needs to be not null for that row - can somebody put this into a command for me so I can make lots like it?
another one I have is in the 'FEE' table, if the 'FEETYPE' column has a value of '1', the 'PERIOD' column needs to always have a value of '3' for that row - is there a command that can check the records that do/do not have this information?
I was just looking for opinions on the best place to pick up SQL skills. Community college course? Online courses? Grad school? I've finished undergrad, if that helps anyone have an idea of my current situation.
I have only been working with SQL for short time. My question is probably a basic one but I would appreciate the assistance!
The scenario is I have two different tables AVCfids (on ACC database)& AVCfids (on ACC.archive database). I am trying to write a command in SQL server agent (jobs) to transfer the data on a daily basis from AVCfids to ACC.archives. The script I have created but is not working is:
Hi, I am totally new to sql server and have got a few doubts.I couldnt find it in earlier posts.Sorry if it is a repetition
*Can we get all the table names of a database by Query? *How to create a similar copy of a table by using AS..does this work in sql server 2000?(tried but showing error) *can we modify the column properties(like ensuring NOT NULL) after the table is created?
I'm in a Database class and am finding it very difficult to find any outside help. I'm sure this will appear to be very basic to those of you who work in the Database field, but your help will be greatly appreciated.
1.Write an SQL statement to show the Warehouse and average QunatityOnHand of all items stored in a warehouse managed by 'Smith'. Use a subquery.
2.Write an SQL statement to show the Warehouse and average QunatityOnHand of all items stored in a warehouse managed by 'Smith'. Use a join. This is what I came up with. Please give me some feedback:
SELECT Avg(QuantityOnHand) FROM INVENTORY WHERE WAREHOUSE IN (SELECT WAREHOUSE FROM MANAGER WHERE Manager = ‘Smith’);
Hello, folks.I have the following query that I run that pulls up the count of the number of orders of a product.SELECT Product, Count(Product) AS TotalFROM Orders_ViewGROUP BY Product, Year([DateOpened]), Month([DateOpened])HAVING (((Year([DateOpened]))=2004) AND ((Month([DateOpened]))=10))ORDER BY Product;This query is fine but the COUNT() function only coughs-up the non-zero results. How can I get this query to cough-up the zero counts as well for all products listed in the Product table?TIA...
I've not touched SQL server programming since 1999. I have very littlememory of it and need some clarifications on some basic questions thatI could even use a book for. Until I get myself a good book, someoneplease help me with the answers:1) What are SQL functions and how are they different from storedprocedures? Do both of the programming objects not achieve the samething? What was the need of having one in addition to the other?2) How do we use an "if construct"/if clause within a SQL statement?Can we use conditional checking with the if construct within a storedprocedure? Can you please post a trivial example of a stored procedurewith an if clause?3) Stored procedures can have input parameters as well as outputparameters. Can they also have in/out parameters that are like "byreference" parameters? What's the syntax on Microsoft's T-SQL version?4) How does one check the return value of a stored procedure?Thanks for helping out.
