Selecting Rows Where Both Fields Don't Match Records In Second Table?

Apr 1, 2009

Assuming this schema:
Table1 (Col1 int, Col2 str, Col3 str, ...)
Table2 (Col1 int, Col2 str, Col3 str, ...)

[Code]....

I need to select all records from Table2 where there are NO records in Table1 having matches of both Col2 & Col3. For instance, Table 2 records where Table1.Col2 <> Table2.Col2 AND Table1.Col3 <> Table2.Col3.

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Make A Table Class With Fields & Records?

Jan 12, 2012

In my first attempt to create a Class that contains something useful (if you will), I am a little lost what a sound way to proceed is. I am trying to make a table that has fields and records. Perhaps imagine a tiny spreadsheet. So, I create my Class. Properties might include the number of columns, the column titles, and the number of rows or records. I then think the thing to do is create a couple of structures to be used within the class. Thus far I have this:

Imports System.Console
Public Class ConsoleTable
Property NumberofCOlumns As Int32

[Code]....

Problems I am creating in my mind include:

1) In the Field Structure, could I make the FieldValue so that I can change the data type? Meaning sometimes I want an instance of a Field to hold a string,or an integer, or a decimal.

2) In the Record structure, for any given instance of one I don't know the number of fields it will hold until I create the new instance. I tried Public RecordFields(FieldCount) As Field in the Structure, but that's not allowed.
I then used Public RecordFields() As Field, and then in my code used the ReDim method. Is there a better way?

3) With the Table Class, same problem. The number of records within any instance of the class needs to be dynamic.

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Sql - Querying Two Tables - Count The Number Of Records That Match On The GIDs From The 'Directories' Table

May 5, 2011

I need to count the number of records that match on the GIDs from the 'Directories' table (GID) and the 'ClientSubscriptions' table (DirectoryGID), and also the 'FranchiseGID' from both; as follows:

Dim iSubscriptionCount

SQLCommand = "SELECT COUNT(*) AS Counter FROM Directories.GID, ClientSubscriptons.DirectoryGID FROM Directories, ClientSubscriptons WHERE Directories.GID = ClientSubscriptons.DirectoryGID;"

[CODE]...

I need to determine whether or not to show a menu option based on the above.

Full Code: Default.asp

<!--#include virtual="/System/Startup_Admin.asp"-->
<!--#include virtual="/Admin/FranchiseAdmin/DirectorySetup/i_Directory.asp"-->
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-

[CODE]....

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Combining Multiple Table Data With Different Fields Into A Single Table With All The Fields?

Feb 13, 2012

how to execute this SQL Statement

Scenario:
Given Tables T_Data, T_AllDesc, T_System1, T_System2
Given Fields:
T_Data= f_id, f_Desc, f_CreationDate, f_CreationTime, f_System1, f_System2

[Code].....

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Check If Two Fields Match?

May 11, 2012

I have a textbox and a rich textbox, all I want to do is if the field in textbox1 matches any field in richtextbox1 then display a label.

Normally I would try

If Textbox1.text = Richtextbox1.text then
label1.text "Field match"

however this wont work as there are many fields in richtextbox1?

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VS 2010 Records In Table Are Determined By Records In Another Table?

Apr 22, 2012

I have a database with 3 tables: Student, Unavailability and Duty.The fields for Student are entered in a form I have. One of the fields in Unavailability is filled by a form, the other fields are an autonumber and a foreign key to the Student table.ow I want records in the Duty table to be created and automatically filled in depending on what the values of the fields are in the Student table.For example, If the Boarder field in the Student table is 'yes' then I want the Duty Number field in the Duty table to be '1', '3' and '4'. If it is 'no' then I want the value to be '2' and '5'. I recognize it will have to create several different records to incorporate the different duty numbers for each StudentID. Obviously this will require an if statement, however this is my first time implementing a database with my limited experience with programming and Visual Basic, so I don't know how to refer to the specific fields in a table and set the value of other fields depending on the data in other fields.

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Asp.net Mvc - Getting A Count Of Rows That Match In Mvc 3 Using EF

Oct 24, 2011

I have a mvc 3 app that uses EF. In one function I need to get a count of rows that match a statement. I thought I could just do it like this:

Dim _ClassCount As Integer = _CurrRegistrants.Where(Function(c) c.tues_class = _CurrCourse.course_ref).Count

But that stays at 0 even when there are 40 records that match the criteria.. I think I have the right idea I just need to change the syntax a little..

Dim _CurrRegistrants As List(Of reg_classes) = db.reg_classes.ToList
For Each Course In _courses.Where(Function(a) a.course_day = "Tuesday")
Dim _CurrCourse As cours = Course

[Code]....

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2010 Express Selecting Random Fields From Access 2003?

Dec 12, 2010

I'm am trying to determine the total number of fields under a particular heading given that the other Heading's total number of fields are > or < than the heading in question. The query, shown first in the attached code, works well if there is one column in one database table, however it does not work well when there are a number of columns with a different number of fields respectively. The CategoriesID encompasses the entire tables contents.I devised a function to determine the total number of fields within a particular column and then attempted to incorporate this, without success, into the second query, shown in the code.

Private Sub GetRandomHeadingFields()
Dim varNumberHigh As Integer
varNumberHigh = TotalNumberofHeadingFields()

[code]....

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DB/Reporting :: Loop Through All Rows And See If Any Match What Is In The Textbox

Nov 10, 2008

I'm trying to loop through all rows, and see if any match what is in the textbox. Would this work?

Code:
Dim dr As Data.DataRow
For Each dr In myQuery.GetMembers()
If UsernameTextBox.Text = dr.Item("mail") Then

[code]....

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Get Particular Table On Data Grid From Selecting Table Name On Combobox?

Jun 7, 2011

i have a combobox on the form and a datagrid viewer .no i want to display the table which selected on combo box..

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Selecting Rows Between Two Dates?

Apr 11, 2012

i have a data base where i am selecting rows between two dates, but what i need to do is also get another another row if it has the same ID so: If i put the date as: 01/02/2011 - 01/02/2011

and data in the database looks like so:

ID Name Date
123 John
123 John 01/02/2011

[Code]...

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Selecting Specific Records From Drop Down Boxes?

Jan 31, 2012

I am creating an application with html using vb as the back end. Microsoft Visual Studio is the application I am using.I have two drop down boxes...one called department, the other program. When a department is selected, I want the program dropdown to only display the programs that are associated with the department chosen. I have found several different codes to do this but nothing has worked so far.

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Selecting TOP 4 Records From Multiple SQL Server Tables?

Apr 13, 2012

I have about 4 different tables with the exact same column names. What I would like to do is select the top 4 records out of all of these tables combined ordered by date (as date is one of the columns that they all share).

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Asp.net - Loop For Each Day In The Current Month And Check Rows For A Match?

Dec 12, 2011

How can I write a loop to run for each day in the current month and then check to see if the Dataset has a record that matches one of those days and take an action?

For Day As Integer = 1 To DaysInTheMonth
For Each row In MyRows
If row.Date.Day = Day Then[code]....

This generates too many rows in the table I have it building. Basically, every day gets as many rows as there are that contain data.I'm building a HTML table that gets mapped into a chart using jquery so I need a for everyday of the month.

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DataGridView And Selecting Multiple Rows?

Jul 9, 2009

I have a DataGridView that is being populated. What I'm trying to accomplish is when I select like 3 rows I click a button and it gives me the "row numbers" for those three rows.

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Convert GridView Table To Html Table But Rows Should Be Columns And Columns Should Be Rows

Aug 18, 2011

I have Dataset ds filled up with values Until now I was displaying values in GridView. Now I want that all the rows should be columns and columns should be rows.I have 2 options: Either 1 I can directly convert grid to columns and display it, or 2 I can convert the GridView to html and then write loops to convert. I was trying the 2nd option but I cant figure out how I should do that.[code]With this code I am still getting same as GridView. Please help me for converting rows to columns and vice versa.

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Asp.net - Selecting A Rows In The Standard .net 2.0 GridView Using JavaScript?

Mar 20, 2009

how i can get the grid to select a row by clicking on any cell in the row?

The only way i can do this at the moment is by setting the AutoGenerateSelectButton property to True, but this adds a column to the grid with a crude "select" hyperlink and only selects the row if the word "Select" is cliked on.

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Creating A Unique URL From Selecting Different Rows In A Gridview?

Sep 30, 2010

Whenever a row is selected in my GridView, I want to take the ID field of my gridview's dataset and form a unique URL with it (use a ?id=1234 parameter). In the Page_Load event I have the following code:

TextBox1.Text = Request.Url.AbsoluteUri.ToString & "?id=" & _
GridView1.SelectedIndex.ToString & Environment.NewLine

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Moving Through Arrays, Selecting Certain Rows And Columns?

Feb 10, 2012

ames tile1 to tile 100Array is loaded from a textfile of 10,10 (not stored as a 10,10 just parsed from line to line, which I feel needs to be changed asap)Each tile is then given a corresponding graphic (e.g. grass, water, lava) and soon hopefully I will add interaction with certain tiles

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Selecting Distinct Within LINQ Of Data Rows

Oct 24, 2011

I have a DataTable with about 64 columns, including "UserAnswer", "CorrectAnswer", and "QID_Lookup". I am building a LINQ that will select all the rows that have a correct answer (user answer matches correct answer), but I only want to select rows that have distinct "QID_Lookup".

[Code]...

The problem is that the result set includes duplicate QID_Lookup values. How can I include only distinct QID_Lookup values? keep in mind that there are 64 columns, so if I can avoid it, I wouldn't want to list each column individually for selection.

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Use Checkbox For Selecting Multiple Rows From DataGridView?

Sep 24, 2011

I have created a bound DataGridView and then added an unbound checkbox (name=select) for selecting multiple rows. The problem I'm having is the row doesn't actually get selected when I set .selected to true which I'm doing in the CellValueChanged event. When I trace it the code is properly executed but the row is not highlighted when the checkbox is checked and consequently not selected in the grid.There is no mouse or keyboard and the input device is a USB button panel which we built.

Public Sub dataGridView1_CellValueChanged(ByVal sender As Object, ByVal e As DataGridViewCellEventArgs) Handles DGV_Categories.CellValueChanged
If DGV_Categories.Columns(e.ColumnIndex).Name = "Select" Then

[code]....

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VS 2008 - Lock Grid Rows To The Number Of Rows In The Data Table?

Jul 27, 2010

when populating a data grid i keep getting a redundant row in the bottom. is there a way to lock grid rows to the number of rows in the data table?

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Insert Records Into One Table Using Records From Other 3 Tables?

Mar 27, 2012

I have this piece of code wich works perfectly when inserting records into one table using records from another table. My question is that now i need to create another table by using records from 3 other tables (tables are related). Can i use aliases on the column names, like on Oracle SqlPlus? How will be the syntax of the 'INSERT INTO SQL statement?

Dim MyConn As ADODB.Connection
Dim MyRecSet As ADODB.Recordset
Dim tmpSQL As String
MyConn = New ADODB.Connection

[code]....

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Selecting Rows From Different Tables To Update User Role?

Mar 2, 2012

what i have is 3 text boxes

User
Role
Upgrade To

and a gridview

what i am trying to do is :when i type in the user the system will look in my table cg_security_user and recognise that the current role is "guest". Then in the Upgrade to when i type in "admin" it will update the current role(guest) to admin here is a picture is attached of what i am trying to do as it might paint a better picture the code which i have made so far is

Private Sub cmdupdate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdupdate.Click
Dim myAdapter As New OleDbDataAdapter
strsql = "update table1 set studname = @field2, studaddress=@field3, studage=@field4 where studid=@field1"

[code]....

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.net - Write A Linq To Sql Query To Find Records Where Field Name Can Match One Of Dynamic Number Of Strings?

Mar 21, 2012

I have users check off lab facilities in a UI. I want to use linq to fetch corresponding records for all of the labs that they have checked off. Basically,

Dim myRecs = (From l As EpiData In myDataContext.EPIDatas Where l.facility= _
one of the checked labs

So basically, I need to write a linq query where the "strings" to match are determined at runtime. Is there any way to do this easily? I know that there is a library out there called dynamic LINQ, but (1) it's in C# and I'm writing in VB (2) I'm really just looking for a single, simple solution for this single case.

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DB/Reporting :: Sql + And Statement - Selecting Rows On Multiple Column Values

Sep 15, 2010

What iam trying to do is selecting rows on multiple column values. But the statement below doesn't preform like i thought it would...

Code:

Select Distinct Variable From TableName Where (ColumnA Like"%AAA%") And (ColumnA Like"%BBB%")

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Open A Csv File Which Contains 4 Fields And Many Rows?

Mar 3, 2011

What I need to do is open a csv file which contains 4 fields and many rows, then I want to do different operations determined on the value in the fields.

for example :

My CSV will be in the following format.
ID,Name,Number,Status
Heres what I have so far
Private Sub OpenFileDialog1_FileOk(ByVal sender As System.Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles OpenFileDialog1.FileOk

[Code].....

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Determine Number Of Fields And Records In Fixed Width File?

Feb 1, 2009

I need to import a big fixed width text data file into SQL server. Before importing, how to determine how many fields and records in the file?

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VS 2010 Insert Records In One Table From Another Table With Sql Satement?

Mar 27, 2012

I do this in Oracle databases just in a snap, but now I have to do it in VB using ADODB and I don't know how to do it.

I have two Access 2007 tables. Table A contains: Col1 (text), Col2 (text), Col3(date), Col4(amount), Col5(text)

Table B contains Col1(date), Col2(amount) What I need to do is to insert into table B the records of table A (col4 summed) grouped by date of table A. The date is a variable contained in a text box so it cannot be hardcoded into the SQL statement.

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SQL Server Query Combination - Get Rows From A Table Based On The Value Of A Field In Another Table

Feb 23, 2011

I have a query that I have to run that requires me to get rows from a table based on the value of a field in another table (which I have gotten earlier). I currently have it done like this (simplified).

[Code]...

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