Hey, can I ask you something? I'm using VB6.0 and I have some problem with the connection of my Database through DataControl. I have a table named tblEmployee and the other one is tblPosition then I passed the value of the two tables to two DataControls respectively. How can I then get the value of a certain row of Position field. With my code, my Position field returns only the first row. Here's my code
Private Sub cmdSearchEmployee_Click()
With datEmployee.Recordset
datEmployee.Recordset.Index = "idxid"
datEmployee.Recordset.Seek "=", txtIDNumber.Text
If .NoMatch = True Then
MsgBox ("No Record Found!")
Else
Me.txtLastName.Text = .Fields("lname")
Me.txtFirstName.Text = .Fields("fname")
Me.txtMiddleName.Text = .Fields("mi")
With datPosition.Recordset
Me.txtPosition.Text = .Fields("position")
End With
End If
End With
End Sub
I can't see that you have "passed the value" to your DataControl named datPosition. Could this be the problem? e.g. where you have
With datPosition.Recordset
Me.txtPosition.Text = .Fields("position")
End With
...should be more like this:
With datPosition.Recordset
.Index = "some_index??"
.Seek "=", "some_value??"
Me.txtPosition.Text = .Fields("position")
End With
Also consider using the recordsets' Filter to remove the rows that do not match your criteria then RecordCount to loop through the rows that do match your criteria.
Further consider returning a single recordset by creating a join between tblEmployee and tblPosition, either in SQL code or returning a hierarchical recordset using the MsDataShape with its SHAPE syntax.
Related
I need to find and update a number of records in a Rails 3.2, Ruby 2 application. The following code successfully finds the records I want. What I need to do though is add " x" (including the space) to the email address of every user and I can't figure out how to do it.
This finds the records
User.joins(:account)
.where("users.account_id NOT IN (?)", [1955, 3083, 3869])
.where("accounts.partner_id IN (?)", [23,50])
.where("users.staff = '0'")
.where("users.admin = '0'")
.where("users.api_user = '0'")
.where("users.partner_id is null")
.update_all(email: :email.to_s << " X")
but it's the last line I'm having problems with. Is this possible, or do I need to find the records another way?
The update_all method updates a collection of records, but unless you write your own SQL expression, it can only set one value. For example, if you wanted to overwrite all the email addresses with "X", you could do it easily:
User.joins(:account)
.where("users.account_id NOT IN (?)", [1955, 3083, 3869])
# ...other scopes...
.update_all(email: "X")
In your case, what you really need to do is make individual updates to all these records. One way to do it is to find the records, then loop over them and update them one at a time:
users_to_update = User.joins(:account)
.where("users.account_id NOT IN (?)", [1955, 3083, 3869])
.where("accounts.partner_id IN (?)", [23,50])
.where("users.staff = '0'")
.where("users.admin = '0'")
.where("users.api_user = '0'")
.where("users.partner_id is null")
users_to_update.each do |user|
user.update_attribute(:email, "#{user.email} X")
end
Another solution would be to use a SQL expression with update_all, as in Zoran's answer.
Try writing the last line like so:
.update_all("email = email || ' X'")
This uses SQL's string concatenation operator to append the X to the end of the emails.
Hope that helps!
I'm new in Lotus Notes programming and I need your advices and your help.
My main form contains a table with 8 rows and 2 columns. ( there are 16 cells ) Every each cell has a numeric field. My fields name are :
txt_n1 and txt_i1 ( for 1st row )
txt_n2 and txt_i2 ( for 2nd row )
....
txt_n8 and txt_i8 ( for 8th row )
What I want to do is:
I have a view called vwMarketing with just one column. I want this view to display only those docs. in which there is at least one or more rows which its cells contains equal values.
So, if let say txt_n4 = txt_i4 => OK
row(k) (where k=1..8) : if cell 1 value is 5 and cell 2 value is 5 => OK.
There could be more than one row with this property, important is to exist at least one, and the values not to be null.
I hoped i was pretty clear, thanks !
PS: Actually, the formula statement i want to be in the column, so if it is OK => "A" and if not => "" ( in the view property, I checked : Don't show empty categories )
if you have small amount of documents in the view, then as u were suggested use Selection Formula to exclude documents with wrong condition.
you can add computed item/flag into your documents, field will compute if the document should be displayed in the view or not. then you will not have performance issue. i.e.
but code you need should look like that (that will check if documents is fine to be displayed in view or not), if you use it in view - just put after all Select _res = 1 otherwise if you decide to use flag into document (to increase performance) then Select youritem = 1
_res := 0;
#For(i:=1;i<=8;i:=i+1;
_post := #Text(i);
_txt_n := #GetField("txt_n"+_post);
_txt_i := #Text(#GetField("txt_i"+_post));
#If( (_txt_n=_txt_i) & (_txt_n!="");
#Do( _res := 1; i:=9);
0
)
);
_res
I would solve it slightly different:
Create a hidden text field on your form called 'DisplayInView' (or similar).
Modify the view selection: SELECT DisplayInView="Yes"
Add the code below to the PostSave event of your form:
Dim thisdoc As NotesDocument
Dim isSame As Boolean
isSame = False
Set thisdoc = source.Document
'*** Loop through all fields in document and compare the field pairs
Forall i In thisdoc.Items
If Left(i.Name,5) = "txt_n" Then
If i.Text = thisdoc.GetItemValue( Replace(i.Name,"txt_n","txt_i") )(0) Then
isSame = True
Exit Forall
End If
End If
End Forall
If isSame Then
Call doc.ReplaceItemValue("DisplayInView","Yes")
Call doc.Save(True,False)
End If
I haven't tested it, but I believe it should work.
am using two datatable named as dnddatatable and dtdup . it contains set of phone numbers . I want to compare 2nd datatable with first datatable and remove the values from datatable1(name as dnddatatable)values which are equal to 2nd datatable name as(dtdup).
data in the datatable as follows.
dnddatatable(data table1)
phone
9865015695
9840903331
98668625
800971868
809679532
837445478
dtdup(dtata table2)
phone_numbers
9865015695
9840903331
result dnddatatable(data table1)
98668625
800971868
809679532
837445478
I answered a pretty similar question time ago, the idea is exactly the same
For i As Integer = 0 To dataset.Tables(0).Rows.Count - 1
Dim found As Boolean = False
For j As Integer = 0 To dataset1.Tables(0).Rows.Count - 1
If dataset.Tables(0).Rows(i)(0).ToString = dataset1.Tables(0).Rows(j) (0).ToString Then
found = True
End If
Next
If found = False Then
'here you are getting the right result in each loop
'in this example i'm showing the result in a textbox
'just change the instruction and write them in your note pad or wherever you want to
MsgBox(dataset.Tables(0).Rows(i)(0).ToString)
End If
Next
So i have FlexGrid in my VB6 project I'm working on. It has names on each row, and I have a drop down so the user can select what name they want to see more info for, here is what I have.
Dim target_name As String
Dim r As Integer
' Get the name.
target_name = Combo1
If Len(target_name) = 0 Then Exit Sub
' Search for the name, skipping the column heading row.
target_name = LCase$(target_name)
For r = 1 To MSFlexGrid1.Rows - 1
If LCase$(MSFlexGrid1.TextMatrix(r, 0)) = _
target_name Then
' We found the target. Select this row.
MSFlexGrid1.Row = r
MSFlexGrid1.RowSel = r
MSFlexGrid1.Col = 0
MSFlexGrid1.ColSel = MSFlexGrid1.Cols - 1
' Make the row visible.
MSFlexGrid1.TopRow = r
Exit Sub
End If
Next r
That works well, but it shows everything below that name too, I would like it to single out only the name selected.
Any help would be great.
What's the data source of your grid? You can place the filter on the data grid data source, so that as the user chooses the name from your drop down only the selected persons details are returned from the datasource to the grid.
Not exactly what you were asking, but its how I would achieve the result you are wanting.
P.S. I have used FlexGrid in VB6 and I don't know of a way to do what you are asking on the grid (might be there but I never noticed it).
I'm using the following LINQ to SQL compiled query.
private static Func<MyDataContext, int[], int> MainSearchQuery =
CompiledQuery.Compile((MyDataContext db, int[] online ) =>
(from u in db.Users where online.Contains(u.username)
select u));
I know it is not possible to use sequence input paramter for a compiled query and im getting “Parameters cannot be sequences” error when running it.
On another post here related , I saw that there is some solution but I couldn't understand it.
Does anyone know to use complied query with array as input paramter?
Please post example if you do.
Like the post that you referenced, it's not really possible out of the box. The post also references creating your own query provider, but it's a bit of overhead and complexity that you probably don't need.
You have a few options here:
Don't use a compiled query. Rather, have a method which will create a where clause from each item in the array resulting in something like this (psuedo-code):
where
online[0] == u.username ||
online[1] == u.username ||
...
online[n] == u.username
Note that you would have to use expression here to create each OR clause.
If you are using SQL Server 2008, create a scalar valued function which will take a table-valued parameter and a value to compare againt. It will return a bit (to indicate if the item is in the values in the table). Then expose that function through LINQ-to-SQL on your data context. From there, you should be able to create a CompiledQuery for that. Note that in this case, you should take an IEnumerable<string> (assuming username is of type string) instead of an array, just because you might have more than one way of representing a sequence of strings, and to SQL server for this operation, it won't matter what the order is.
One solution that I have found myself doing (for MS SQL 2005/2008). And I'm not sure if it is appropriate in all scenarios is to just write dynamic sql and execute it against the datacontext using the ExecuteQuery method.
For example, if I have an unbounded list that I am trying to pass to a query to do a contains...
' Mock a list of values
Dim ids as New List(of Integer)
ids.Add(1)
ids.Add(2)
' ....
ids.Add(1234)
Dim indivs = (From c In context.Individuals _
Where ids.Contains(c.Id) _
Select c).ToList
I would modify this query to create a SQL string to execute against the database directly like so...
Dim str As New Text.StringBuilder("")
Dim declareStmt as string = "declare #ids table (indivId int) " & vbcrlf)
For i As Integer = 0 To ids.Count - 1
str.Append("select " & ids(i).ToString() & " & vbcrlf)
If i < ids.Count Then
str.Append("union " & vbcrlf)
End If
Next
Dim selStatement As String = "select * From " & context.Mapping.GetTable(GetType(Individuals)).TableName & _
" indiv " & vbcrlf & _
" inner join #ids ids on indiv.id = ids.id"
Dim query = declareStmt & str.ToString & selStatement
Dim result = context.ExecuteQuery(of Individual)(query).ToList
So barring any syntax errors or bugs that I coded (the above is more or less psuedo code and not tested), the above will generate a table variable in SQL and execute an inner join against the desired table (Individuals in this example) and avoid the use of a "IN" statement.
Hope that helps someone out!