How To Execute Multiple Queries In An Application
Nov 17, 2010
I'm building an application that will be using several (7) SQL queries, I'm wondering whats the best way to approach this since I've never built an app with this many queries in it. These queries really won't change, just the start date and end date and I have query in my first form that finds out the next available date by checking a table. What I'm wondering is if it would be better to construct these queries in my application or if it would be better to use stored procedures on my sql server to do the same thing and not have the application carry the load of the queries.
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Nov 5, 2010
I have a form that will have at least 3 seperate sql queries that I want to have submitted with an onclick event.
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Apr 23, 2009
I am using C# and MSAccess as my database.
Code:private void ExecuteQuery(string strempname,string strQuestion,string IndividualRating,string OverallRating, string Comment1, string Comment2,string Comment3, string SessionName) { string strQuery= string.Empty; try { strQuery = "insert into FeedbackDetails(EmpName,Question,IndividualRating,OverallRating,Comment1,Comment2,Comment3,SessionName)"
[code]....
so this actually opens and close connection for every method. but i need to open and close the connection only one time. so how to customize this code to achieve my need. now i am hitting database for 14 times in a button click as of now. instead i need to hit only once but all the rows has to be inserted in my database.i am using MSAccess as Database.
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Oct 20, 2009
I have 2 queries to run, one after another.
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Oct 8, 2010
I am new(ish) to Visual Basic and i have learned from looking at old VB6 code for programs that have been made for us in the past, this includes using the old ADODB connections and FlexGrids which both have been changed in VB.Net to OLEDB and DataGridView.I have started to understand the way the connections and datasets etc are created but i am struggling to get to where i was with the old code (I am trying to completely upgrade the code from FlexGrid).This is the VB6 Code i am trying to upgrade from:
[Code]...
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Jan 13, 2012
i am creating a program in vb.net and was wondering if there is a way to perform multiple queries with one button without adding a second button. like i have two text boxes, one is for date and the other is for name. what i want to do is if i hit search and both the date and name boxes are filled, i want it to search for the name based on that date. but if only the name is filled i want to search for everything under that name.This is what i have. right now it only does one search:
[Code]...
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Nov 4, 2010
I have multiple queries that I need to run when a user clicks a button but they are all separate queries. Can this be done?
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Jan 8, 2009
Mi am creating a program in vb.net and was wondering if there is a way to perform multiple queries with one button without adding a second button.like i have two text boxes, one is for date and the other is for name. what i want to do is if i hit search and both the date and name boxes are filled, i want it to search for the name based on that date. but if only the name is filled i want to search for everything under that name
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Sep 8, 2009
I have a rather complicated application (for me anyway). I have a word template setup with text controls. A web app with ASP controls and vb backend code binds data to the text controls using an xml file.
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Feb 13, 2012
My project contains a DataGridView with a SQL Database Table called Shows. This is a list of TV Shows and I want to apply several filters to it. So I have several different columns to apply the filter to.
1. Completed (bit)
2. Hide (bit)
3. Seen (bit)
4. Genre (nvarchar)
Currently I am using RadioButtons to switch between the queries, but I want to be able to have several filters applied at the same time with CheckBoxes.
[Code]...
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Apr 11, 2012
I am new to working with SQL databases (and databases in general) so I do not have a lot of experience with how queries work and how I can practice them. When I was first learning xml and XPath, I found XPath Visualizer incredibly helpful after someone on stack overflow mentioned it to me.Due to this, I am wondering if a similar tool exists for SQL databases?Basically a tool that will allow me to connect to a database,enter queries and see somehow what the results would be like.
I have looked online a bit, however I have found relatively few options in terms of any utility that would do what I want, and that looks reliable.I will ultimately be writing an application to interact with an SQL 2008 server in vb.net, however for now I am just experimenting so I will know what I am doing when I actually want to create my application.So far I have managed to connect to the database using an OLE DB connection, but I am now looking for a way to experiement with queries without just querying and figuring out a way to interpret the results in my program. Basically I want to be able to remove the programming aspect of things so I can experiment with queries without needing to question anything in my code that is unrelated to the specific query.
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Jul 21, 2011
In .NET, Is it possible to run a nested query from two separate Oracle databases?
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Ultimately, this is an effort to overcome an "ORA-01795" error from using an "in" statement with over 1000 items in the conditional list, without having to break the query out into multiple "OR value IN" lists.
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Mar 9, 2009
I am trying to fill a temporary table with one column( a code) with the unique results of three queries of their respective table adapters.I can't figure out how to do it from here.The database is Access 2007 and I have activated the appropriate dataset on the form from which this code executes. The table adapters are part of that dataset.I could try to use the recordset approach, but that means making another connection to the same database.Is that a preferable approach?My purpose in doing this is to build a VB process like the one that works in a VBA Module of this Accessdatabase, partly to help me learn VB2008 and partly to overcome the necessity to keep updating queries used by the module.Code below
[Code].....
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Apr 19, 2011
I need to loop through a gridview to find records that match items in a different table (in SQL). Is the best method to loop through the gridview and call an SQL procedure on every loop to find matching records? Or should I pull the entire sql db into a datatable and query the dataset in my gridview loop?
'find source ID based on make/model/serial No combination.
Dim cSource As New clsSource()
Dim ds As DataSet = cSource.GetSources()
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Jun 25, 2009
There is not a VB.net database forum, and there is a HUGE difference (unfortunately) between ADO and ADO.net. I have a connection to a MS SQL database, which I understand is capable of handling multiple SQL statements in one Execution, ie
Using cmdExe As New System.Data.SqlClient.SqlCommand
sSQL = "Delete * from mytable where UniqueID=123;Insert into mytable (UniqueID, Field) values (123, 'something')"
.CommandText = strSingleSQLLine
[Code]....
There are two questions here actually...can I add the parameters before setting the command text, and do I have to add the same parameter over and over again?
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Dec 30, 2010
I Want to show result from multiple tables from database but how to set property (Setdatasource) for the same in vb.net. Iam using visual studio 2008 back end sql compact 2005
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Jan 19, 2010
We use an ERP program in conjuction with SQL server and lots of tables that keep track of product records customers and all these kinds of stuff. I am building a fairly simple Warehouse Inventory Application that warehouse employees will use to count and inventory stock on hand from products around the warehouse and then check if any quantity errors occur between stock on hand and logistic quantities.I have created a custom Inventory table that I would populate with records like {stock_code, Description, Quantity_remain, quantity_avail}. Those records already exist in 2 different tables in my database. The aim is that I want my program to fetch daily 10 random codes from the stck table, and records about their quantities,bringing together the "columns" that my new custom table has +2 more editable columns: inventory, date, user with a query like this:[code]
As you can imagine my custom table contains the exact same fields as the query suggests + 3 more.I use the the stck table to fetch product info like its code,description, its group_code, categ_code, and then I outer join the stck_x_th that contains records concerning quantities remaining or available asociated with each product code and the "places" those quantities reside in the warehouse.Then, store them in a datagridview control, with only one editable column -inventory- (user and date columns are auto-populated with default values), and then when the user fills out the inventory quantites, I want to save the datagrid "as it is" in my new custom table.I am creating a databound gridview control using one table adapter (which refers to the inventory table). Then I add to my table adapter using "add query" the forementioned query with a fillby method to populate the Datagrid (and therefore my Table in SQL) with the exact same values my query returned from the different tables. But whenever I try to update the table concurrency exceptions raise.It works like a charm if I enter the values in the grid cells manually, without populating the grid control with the new fillby method my self but not if I populate the grid via a query and then hit update.
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Jul 24, 2009
i'm new at vb.net (though i have extensive vb6 experience and oracle experience), and i need a sample program/project which uses multiple queries (of the same oracle database namespace) to display counts in text boxes.user will use a pull down list to select action from there.
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Jan 6, 2010
I am writing a message system on my server, the xml is something like this
<xml>
<entry>
<sender>[code]....
my problem now i guess is 2 fold, i wish to combine the first 3 queries into a single query and place in a list or a collection or is there a way to do this with a single query that will give me my desired result?
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Jan 6, 2012
I have an application that works together with a SQL database. This database has more than 40 tables and my applican has to extract different situations from those tables.
I have predefined some queries for the situations that I know they need to be in the application.
The idea is that I need kind of a module in which an user can create his own situation based on the tables, views, functions and procedures that already exist in the database. Something like it is in SQL. There has to be a library or something which will read my sql database directly from my application and which allow the user to create his own queries and situations.
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Dec 27, 2010
I have a problem related, not only to VB.net, but also Oracle.I have a simple application that runs queries from an Oracle db (Oracle 9i) and creates reports from it. I am using the official oracle.dataAccess component.I need a very simple report that returns a list of usernames. Something like "SELECT userName FROM users".(userName field is a VARCHAR2).Problem with this query:The top 50 rows are OK.All the remaining are strange characters.
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Jan 23, 2011
I am sure some of you have seen this project before. I need to create an application that queries customer name (first and last) and there addresses. I need more than that but once I figure what i am doing wrong with that, I should be able to figure out the rest on my own. I am using VS 2010. I can not figure out the proper syntax for String.Format. I can only get it to display the first and last names of the customers.This is the code I have so far:Public Class Form1
[Code]...
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Aug 6, 2009
I'm developing an application with Visual Studio 2008 (with visual basic), first of all, I'll give a brief of what I'm planning this module will do.
It's an accounting application, that I use to administrate some of my company's movemets. The application links directly with MS SQL server 2005, and sends queries to the database like: client name, employee Id, transacion type etc. Right now I'm developing a contracts module, wich is intended to be used with Microsoft Word 2007. We want the module to do the following: (It's a contract document; the document should get the variables from the application like contract type [that would change the template of contract used in microsoft word depending on the type], Client name, Salesman name, today's date, name of the company's representative)
1) After the data has been captured from the application (the application has a capture module that sends the info to the database), instantly send the capturer to microsoft Word, to a layout that has variable fields that should fill themselves with the database information ( I don't have a clue on how to do that )
2) The capturer should be able to change text in the contract layout and fix the variables info in case they were misstyped, adn when he/she saves the document; if there were any variables edited, they should get updated in the database; and the application should be saved with a name that has variables on its name ( 1)today's date in DDMMYY format, 2)First 2 letters of the client's name, 3)last 3 digits from tye contract number), save the file in a directory where all contracts are in .docx format (could use any frmat, it actually doesn't matters), and send the file location to the databse; to a table field named "file" wich only has the file's route.
3)From my application, when consulting the data, give the app access to the file directly; simply by getting the query form the database.
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May 4, 2011
I am having some difficulty with an xPath expression. I am using an XML document to store queries / stored procedure names in an ASP application. I use a utility function to load the xmldocument (if it isn't previously loaded) and I am attempting to select the node set from the document that matches an Id element. [code] the node variable only returns the first element. I have verified the that the qry string that is used to SelectSingleNode IS the correct Id value (i.e. USER002) - however the node is getting loaded with the USER001 element. It is obviously the xPath expression that is messed up. What do I need to tweak on the xPath expression so that I can return the correct <Id> element and corresponding child <Sql> element.
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Jan 26, 2011
I have the following code:
Code:
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Main.payrollButton.Enabled = True
[Code]....
and I'm trying to execute several stored procedures and it doesnt seem that it is.
On my final form that this connects to, I'm trying to fill data that is summed by these stored procedures and I'm getting the error of :
'The SelectCommand property has not been initialized before calling 'Fill' ... which I'm told is because there is no data in my query.
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Oct 9, 2011
I need a coding to execute multiple at commands simultaneously. when first command execute and get the response from the port and then the second command will be executed. how to write the coding. it is possible. i am using siemens gsm modem.
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when i execute this coding i can't get the correct result because the port response will take some times.how can i identify the time delay. when i use thread.sleep(300) means this is also not correct for my solution. Because the port response will take more than 300 milliseconds?
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May 6, 2009
I'm writing a scripter using VBScript, that should be able to execute multiple scripts at same time, running on own threads.
The issue is, I DO start those scripts on different threads, but their sleeps still seem to affect the other threads too.
For example, let's say I start 2 scripts
In the Main event
NewScript1
NewScript2
[code]....
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Apr 3, 2009
The DBA has created a DTS package to update a SQL Server 2000 table. We have a VB .NET 2008 application that needs to execute this package. We thought that having the application execute a stored procedure to do this would suffice; however, we are exploring a way to execute the DTS package programatically.
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Mar 2, 2009
Not in the Debug directory or any directory, I actually mean within my program Is there a way to add the exe to the My.Resources or something similar and execute the application that is stored within my application. I have tried to do a Process.Start(Myexe'sName), but I have a feeling that looks for an exe outside the actual program, directory
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Mar 24, 2011
How can I add an .exe to my resources and execute it within my code? Or atleast have that program compile with my project and be able to execute it?
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