After applying the unpivot procedure, I have an Amount column that has blanks and other characters ( like "-"). I would like to convert those non-numberic values to zero. I use replace procedure but it only converts one at the time.
Also, I tried to use the following script
/**
Public Overrides Sub Input()_ProcessInputRows(ByVal Row As Input()Buffer)
If Row.ColumnName_IsNull = False Or Row.ColumnName = "" Then
Dim pattern As String = String.Empty
Dim r As Regex = Nothing
pattern = "[^0-9]"
r = New Regex(pattern, RegexOptions.Compiled)
Row.ColumnName = Regex.Replace(Row.ColumnName, pattern, "")
End If
End Sub
**/
but i'm getting error.I don't much about script so maybe I placed in the wrong place. The bottom line is that I need to convert those non-numberic values.
Thank you in advance for your help.
I generally look at regular expressions as a great way to introduce another problem into an existing one.
What I did to simulate your problem was to write a select statement that added 5 rows. 2 with valid numbers, the rest were an empty string, string with spaces and one with a hyphen.
I then wired it up to a Script Component and set the column as read/write
The script I used is as follows. I verified there was a value there and if so, I attempted to convert the value to an integer. If that failed, then I assigned it zero. VB is not my strong suit so if this could have been done more elegantly, please edit my script.
Public Overrides Sub Input0_ProcessInputRow(ByVal Row As Input0Buffer)
' Ensure we have data to work with
If Not Row.ColumnName_IsNull Then
' Test whether it's a number or not
' TryCast doesn't work with value types so I'm going the lazy route
Try
' Cast to an integer and then back to string because
' my vb is weak
Row.ColumnName = CStr(CType(Row.ColumnName, Integer))
Catch ex As Exception
Row.ColumnName = 0
End Try
End If
End Sub
Related
In MS Access I have a table with a Short Text field named txtPMTaskDesc in which some records contains numbers, and if they do, at different positions in the string. I would like to recover these numbers from the text string if possible for sorting purposes.
There are over 26000 records in the table, so I would rather handle it in a query over using VBA loops etc.
Sample Data
While the end goal is to recover the whole number, I was going to start with just identifying the position of the first numerical value in the string. I have tried a few things to no avail like:
InStr(1,[txtPMTaskDesc],"*[0-9]*")
Once I get that, I was going to use it as a part of a Mid() function to pull out it and the character next to it like below. (its a bit dodgy, but there is never more than a two-digit number in the text string)
IIf(InStr(1,[txtPMTaskDesc],"*[0-9]*")>0,Mid([txtPMTaskDesc],InStr(1,[txtPMTaskDesc],"*[0-9]*"),2)*1,0)
Any assistance appreciated.
If data is truly representative and number always preceded by "- No ", then expression in query can be like:
Val(Mid(txtPMTaskDesc, InStr(txtPMTaskDesc, "- No ") + 5))
If there is no match, a 0 will return, however, if field is null, the expression will error.
If string does not have consistent pattern (numbers always in same position or preceded by some distinct character combination that can be used to locate position), don't think can get what you want without VBA. Either loop through string or explore Regular Expressions aka RegEx. Set reference to Microsoft VBScript Regular Expressions x.x library.
Function GetNum(strS AS String)
Dim re As RegExp, Match As Object
Set re = New RegExp
re.Pattern = "[\d+]+"
Set Match = re.Execute(strS)
GetNum = Null
If Match.Count > 0 Then GetNum = Match(0)
End Function
Input of string "Fuel Injector - No 1 - R&I" returns 1.
Place function in a general module and call it from query.
SELECT table.*, GetNum(Nz(txtPMTaskDesc,"")) AS Num FROM table;
Function returns Null if there is no number match.
Well, does the number you want ALWAYS have a - No xxxx - format?
If yes, then you could have this global function in VBA like this:
Public Function GNUM(v As Variant) As Long
If IsNull(v) Then
GNUM = 0
Exit Function
End If
Dim vBuf As Variant
vBuf = Split(v, " - No ")
Dim strRes As String
If UBound(vBuf) > 0 Then
strRes = Split(vBuf(1), "-")(0)
GNUM = Trim(strRes)
Else
GNUM = 0
End If
End Function
Then your sql will be like this:
SELECT BLA, BLA, txtPMTaskDesc, GNUM([txtPMTaskDesc] AS TaskNum
FROM myTable
So you can create/have a public VBA function, and it can be used in the sql query.
It just a question if " - No -" is ALWAYS that format, then THEN the number follows this
So we have "space" "-" "space" "No" "space" "-" -- then the number and the " -"
How well this will work depends on how consistent this text is.
In my Access query, I have the query using a VBA function to figure the value that goes in the query field.
In the form, if the stringval textbox has a value, then I want to compute it, but if not, it should remain empty (null).
Function GetValue(stringval, numval)
Dim result
stringval= stringval & ""
result= IIf(stringval<> "", numval* 1.5, Null)
GetValue = Int(result)
End Function
Now, I have a form that uses this query, and on the form is a textbox that displays the query value. I want the value to be formatted with commas in the numbers for easy reading. Everything I've tried so far does not show any commas.
I've tried:
used Standard for the Format > Formatfor the textbox (in properties)
putting #,###.### in the textbox Format value
putting #,##0.0## in the textbox Format value
changing Data > Text Format but it only gives me Plain Text and Rich Text - no option for numbers.
returning a double from the function
Note: if I don't use a custom VBA function, and write the formula directly into the query, then it does display commas. But when I move the formula into the function then the commas are lost.
What do I do?
[update]
I tried Gustav's solutions and since they didn't work for me, I added those as items to my "what I've tried" list above.
Also, if I look at the query in datasheet view, the number values sort alphabetically instead of by the size of the value. When I used the forumulae directly in the query instead of using functions, it sorted by the value of the number. I hope this is a clue.
Numbers carries no format. A format is applied when displayed only.
But be sure to return a Double if not Null:
Function GetValue(stringval, numval)
Dim result
If stringval & "" <> "" Then
result = Int(CDbl(numval) * 1.5)
Else
result = Null
End If
GetValue = result
End Function
Then apply your Format to the textbox
#,##0.0##
Or force a formatted string to be returned:
If stringval & "" <> "" Then
result = Format(Int(CDbl(numval) * 1.5), "#,##0.0##")
Else
result = Null
End If
and skip formatting of the textbox.
The solution is this: the function has to be declared as a double.
That allows the query's datasheet view to know it is displaying numbers - and so you can set the field's format to Standard for the comma to display. This also allows the form to know it has a number and it will display the comma there, too. I knew it had to do with double, but didn't realize before that the function needed to be declared as such.
Function GetValue(stringval, numval) as double '<----THIS!!!!
Dim result
If stringval & "" <> "" Then
result = numval * 1.5
Else
result = 0 `<--can't return null here; use nz function in control source for textbox
End If
GetValue = int(result) 'to remove decimals
End Function
The problem I was having was in some of my functions I need to return double or null, because I wanted textboxes to remain blank if they contained no data. Now, at least I know how to make the numbers generated by functions to display commas.
And here is how to deal with the fact that you can't return null as the value of a double. The function is originally from here.
Put this function in a module so it is public, and then in the control source for the textbox, instead of just putting the field value, put Zn(fieldvalue). This works like a charm (although using functions in the control source seems to have a delay on the form display). This way you can keep the underlying value as a double and still get commas to display in both the form and the query whilst keeping the field blank if necessary.
Public Function Zn(pvar)
' Return null if input is zero or ""
If IsNull(pvar) Then
Zn = Null
ElseIf IsNumeric(pvar) Then
If pvar = 0 Then
Zn = Null
Else
Zn = pvar
End If
Else
If Len(pvar) = 0 Then
Zn = Null
Else
Zn = pvar
End If
End If
End Function
I am trying to get three values from a large html file. I thought I could use the substring method, but was informed that the position of the data may change. Basically, in the following code I need to pick out "Total number of records: 106", "Number of records imported:106", and "Number of records rejected: 0"
<B>Total number of records : </B>106</Font><br><Font face="arial" size="2"><B>Number of records imported : </B>106</Font><br><Font face="arial" size="2"><B>Number of records rejected : </B>0</Font>
I hope this is clear enough. Thanks in advance!
Simple string operations like IndexOf() and Substring() should be plenty to do the job. Regular Expressions would be another approach that'd take less code (and may allow more flexibility if the HTML tags can vary), but as Mark Twain would say, I didn't have time for a short solution, so I wrote a long one instead.
In general you'll get better results around here by showing you've at least made a reasonable attempt first and showing where you got stuck. But for this time...here you go. :-)
Private Shared Function GetMatchingCount(allInputText As String, textBefore As String, textAfter As String) As Integer?
'Find the first occurrence of the text before the desired number
Dim startPosition As Integer = allInputText.IndexOf(textBefore)
'If text before was not found, return Nothing
If startPosition < 0 Then Return Nothing
'Move the start position to the end of the text before, rather than the beginning.
startPosition += textBefore.Length
'Find the first occurrence of text after the desired number
Dim endPosition As Integer = allInputText.IndexOf(textAfter, startPosition)
'If text after was not found, return Nothing
If endPosition < 0 Then Return Nothing
'Get the string found at the start and end positions
Dim textFound As String = allInputText.Substring(startPosition, endPosition - startPosition)
'Try converting the string found to an integer
Try
Return CInt(textFound)
Catch ex As Exception
Return Nothing
End Try
End Function
Of course, it'll only work if the text before and after is always the same. If you use that with a driver console app like this (but without the Shared, since it'd be in a Module then)...
Sub Main()
Dim allText As String = "<B>Total number of records : </B>106</Font><br><Font face=""arial"" size=""2""><B>Number of records imported : </B>106</Font><br><Font face=""arial"" size=""2""><B>Number of records rejected : </B>0</Font>"""""
Dim totalRecords As Integer? = GetMatchingCount(allText, "<B>Total number of records : </B>", "<")
Dim recordsImported As Integer? = GetMatchingCount(allText, "<B>Number of records imported : </B>", "<")
Dim recordsRejected As Integer? = GetMatchingCount(allText, "<B>Number of records rejected : </B>", "<")
Console.WriteLine("Total: {0}", totalRecords)
Console.WriteLine("Imported: {0}", recordsImported)
Console.WriteLine("Rejected: {0}", recordsRejected)
Console.ReadKey()
End Sub
...you'll get output like so:
Total: 106
Imported: 106
Rejected: 0
I am using rdlc report, i have a column in database which i want to display in the report.
vehicleDamageArea=1,2,3
In the report I need to mark the placeholders with these values.
=iif((Fields!vehicleDamageArea.Value="3"),Chr(253),Chr(168)) like this.
But as we know,it will check the whole value 1,2,3="3" not the splitted values.
Any suggestion to check by splitting the vehicleDamageArea parameter.
I made it to work as below
Public Shared Function CheckValue(ByVal InString As String,ByVal input as String) As Char
Dim output As String = String.Empty
Dim Parts() As String = InString.ToString().Split(",")
For i As Integer = 0 To Parts.Length - 1
If Parts(i) = input Then
output = Chr(0120)
Exit For
Else
output = Chr(0111)
End If
Next i
Return output
End Function
You can get the individual values using the split function in reporting services. It returns a zero-based string array, so for your example you need
=Split(First(Fields!ID.Value),",")(2)
You should make a function that accept a comma separated expression, than process this string and return a Boolean, then call this function as for boolean value.
I need to remove hyphens from a string in a large number of access fields. What's the best way to go about doing this?
Currently, the entries are follow this general format:
2010-54-1
2010-56-1
etc.
I'm trying to run append queries off of this field, but I'm always getting validation errors causing the query to fail. I think the cause of this failure is the hypens in the entries, which is why I need to remove them.
I've googled, and I see that there are a number of formatting guides using vbscript, but I'm not sure how I can integrate vb into Access. It's new to me :)
Thanks in advance,
Jacques
EDIT:
So, Ive run a test case with some values that are simply text. They don't work either, the issue isn't the hyphens.
I'm not sure that the hyphens are actually the problem without seeing sample data / query but if all you need to do is get rid of them, the Replace function should be sufficient (you can use this in the query)
example: http://www.techonthenet.com/access/functions/string/replace.php
If you need to do some more advanced string manipulation than this (or multiple calls to replace) you might want to create a VBA function you can call from your query, like this:
http://www.pcreview.co.uk/forums/thread-2596934.php
To do this you'd just need to add a module to your access project, and add the function there to be able to use it in your query.
I have a function I use when removing everything except Alphanumeric characters. Simply create a query and use the function in the query on whatever field you are trying to modify. Runs much faster than find and replace.
Public Function AlphaNumeric(inputStr As String)
Dim ascVal As Integer, originalStr As String, newStr As String, counter As Integer, trimStr As String
On Error GoTo Err_Stuff
' send to error message handler
If inputStr = "" Then Exit Function
' if nothing there quit
trimStr = Trim(inputStr)
' trim out spaces
newStr = ""
' initiate string to return
For counter = 1 To Len(trimStr)
' iterate over length of string
ascVal = Asc(Mid$(trimStr, counter, 1))
' find ascii vale of string
Select Case ascVal
Case 48 To 57, 65 To 90, 97 To 122
' if value in case then acceptable to keep
newStr = newStr & Chr(ascVal)
' add new value to existing new string
End Select
Next counter
' move to next character
AlphaNumeric = newStr
' return new completed string
Exit Function
Err_Stuff:
' handler for errors
MsgBox Err.Number & " " & Err.Description
End Function
Just noticed the link to the code, looks similar to mine. Guess this is just another option.