i have report that generates number of policies from 2 datasets.
the table is linked to dataset1.
i used the formula
CountDistinct(Fields!Policy_ID.Value)
my problem is how to get distinct count for the field Policy_ID from the second dataset "AccountingV10Dataset", specially that i have grouping Contract_Start_Month, Contract_Cover_Type, and Primary_LOB.
below a screen shot to the report design to help you to understand my request
the report should be generated as below:
I would derive the Distinct Count back in the Dataset layer e.g. in SQL. The SSRS Aggregate Functions only go so far.
I managed to solved this way:
i created the below code to calculate disting count from another dataset:
Dim suma As Decimal = New Decimal()
Public Function SumLookup(ByVal items As Object(),ByVal CountSum As String) As Decimal
If items Is Nothing Then
Return Nothing
End If
Dim ct as Integer = New Integer()
Dim PolId as Integer = New Integer()
suma = 0
ct = 0
PolId = 0
For Each item As Object In items
suma += Convert.ToDecimal(item)
If (CountSum = "SUM") then
ct += 1
Else If (PolID <> Convert.ToInt32(item)) then
ct += 1
END If
PolId = Convert.ToInt32(item)
Next
If (ct = 0) Then return 0 else If(CountSum = "SUM") then return suma else return ct
End Function
Public Function GetMyVal() as Decimal
GetMyVal = suma
End Function
and i call this function by:
=code.SumLookup(Lookupset(Fields!Contract_Start_Month.Value & "-" & Fields!Contract_Cover_Type.Value & "-" & Fields!Primary_LOB.Value,Fields!Contract_Year_Start_Month.Value & "-" & Fields!Cover_Type.Value & "-" & Fields!LOB.Value,Fields!Layer_ID.Value, "AccountingV10Dataset"),"COUNT")
Hope my solution will helpfull for other users as it did for me.
Regards,
Related
I have this Loockup custom code:
Function SumLookup(ByVal items As Object()) As Decimal
If items Is Nothing Then
Return Nothing
End If
Dim suma As Decimal = New Decimal()
Dim ct as Integer = New Integer()
suma = 0
ct = 0
For Each item As Object In items
suma += Convert.ToDecimal(item)
ct += 1
Next
If (ct = 0) Then return 0 else return suma
End Function
Now I want to use in expression like:
=Code.SumLookup(LookupSet(Fields!sJerarquiaNivel2.Value,Fields!Unidad.Value,Sum(Fields!InventarioSobreVentas.Value, "DS_DataInventarioDosAniosAnterior"))
Problem is when I run project I getting:
Expression has an incorrect number of parameters for the function 'LookupSet'
What am I doing wrong? Regards
You need to close the parentheses at the end of the SUM
Try
LookupSet(Fields!sJerarquiaNivel2.Value,Fields!Unidad.Value,Sum(Fields!InventarioSobreVentas.Value), "DS_DataInventarioDosAniosAnterior")
I have a Database with many columns, one of them containing Names.
My vb.net software acts as telegram server and waits for the user to send its full name.
The database could have its name spelled differently, for example "Marco Dell'Orso" could be spelled "Marco Dellorso" or "Marco Dell Orso" od "Dell Orso Marco" or whatever. The user could also misspell his name and invert two letters.. for esample "MaCRo Dell'Orso"
I would need a way to return the 5 rows that are the most similar to the words used in the query. What would be the best way? I was thinking of splitting the name on whitechars and then use LIKE in the query with the single words, but that does not work with mistyped words.
EDIT:
My current plan is to that if the database contains more than one or less then one rows with the exact name, then split the input into the single words and return all strings that contain ANY of the input words. this should reduce the rows to analyze from 42000 to a few hundred. Once I have these few hundred lines, i could run a Levenshtein function on the rows and return the 5 most matching..
Is this a good idea?
Solved it this way by combining my custom function with a premade Levenshtein function from this link: How to calculate distance similarity measure of given 2 strings? . I assign a score for each single word that appears in the other wordcomplex. then I add a score based on the Levenshtein comparison of each word to another. works great:
Public Class Form1
Private Sub TextBox1_KeyUp(sender As Object, e As KeyEventArgs) Handles TextBox1.KeyUp
calc()
End Sub
Private Sub TextBox2_KeyUp(sender As Object, e As KeyEventArgs) Handles TextBox2.KeyUp
calc()
End Sub
Sub calc()
Label1.Text = compare(TextBox1.Text, TextBox2.Text)
End Sub
Public Function compare(source As String, target As String) As Integer
Dim score As Double
Dim sourcewords As String() = source.Split(New Char() {" "c, "'"c, "`"c, "´"c})
Dim targetwords As String() = target.Split(New Char() {" "c, "'"c, "`"c, "´"c})
For Each s In sourcewords
If target.Contains(s) Then score = score + 1
For Each t In targetwords
score = score + 1 / (DamerauLevenshteinDistance(s, t, 100) + 1)
Next
Next
For Each s In targetwords
If source.Contains(s) Then score = score + 1
For Each t In sourcewords
score = score + 1 / (DamerauLevenshteinDistance(s, t, 100) + 1)
Next
Next
Return score
End Function
''' <summary>
''' Computes the Damerau-Levenshtein Distance between two strings, represented as arrays of
''' integers, where each integer represents the code point of a character in the source string.
''' Includes an optional threshhold which can be used to indicate the maximum allowable distance.
''' </summary>
''' <param name="source">An array of the code points of the first string</param>
''' <param name="target">An array of the code points of the second string</param>
''' <param name="threshold">Maximum allowable distance</param>
''' <returns>Int.MaxValue if threshhold exceeded; otherwise the Damerau-Leveshteim distance between the strings</returns>
Public Shared Function DamerauLevenshteinDistance(source As String, target As String, threshold As Integer) As Integer
Dim length1 As Integer = source.Length
Dim length2 As Integer = target.Length
' Return trivial case - difference in string lengths exceeds threshhold
If Math.Abs(length1 - length2) > threshold Then
Return Integer.MaxValue
End If
' Ensure arrays [i] / length1 use shorter length
If length1 > length2 Then
Swap(target, source)
Swap(length1, length2)
End If
Dim maxi As Integer = length1
Dim maxj As Integer = length2
Dim dCurrent As Integer() = New Integer(maxi) {}
Dim dMinus1 As Integer() = New Integer(maxi) {}
Dim dMinus2 As Integer() = New Integer(maxi) {}
Dim dSwap As Integer()
For i As Integer = 0 To maxi
dCurrent(i) = i
Next
Dim jm1 As Integer = 0, im1 As Integer = 0, im2 As Integer = -1
For j As Integer = 1 To maxj
' Rotate
dSwap = dMinus2
dMinus2 = dMinus1
dMinus1 = dCurrent
dCurrent = dSwap
' Initialize
Dim minDistance As Integer = Integer.MaxValue
dCurrent(0) = j
im1 = 0
im2 = -1
For i As Integer = 1 To maxi
Dim cost As Integer = If(source(im1) = target(jm1), 0, 1)
Dim del As Integer = dCurrent(im1) + 1
Dim ins As Integer = dMinus1(i) + 1
Dim [sub] As Integer = dMinus1(im1) + cost
'Fastest execution for min value of 3 integers
Dim min As Integer = If((del > ins), (If(ins > [sub], [sub], ins)), (If(del > [sub], [sub], del)))
If i > 1 AndAlso j > 1 AndAlso source(im2) = target(jm1) AndAlso source(im1) = target(j - 2) Then
min = Math.Min(min, dMinus2(im2) + cost)
End If
dCurrent(i) = min
If min < minDistance Then
minDistance = min
End If
im1 += 1
im2 += 1
Next
jm1 += 1
If minDistance > threshold Then
Return Integer.MaxValue - 1
End If
Next
Dim result As Integer = dCurrent(maxi)
Return If((result > threshold), Integer.MaxValue, result)
End Function
Private Shared Sub Swap(Of T)(ByRef arg1 As T, ByRef arg2 As T)
Dim temp As T = arg1
arg1 = arg2
arg2 = temp
End Sub
End Class
One way is to use the build-in soundex function of MySQL.
SELECT SOUNDEX(name) FROM table;
Or, the better way, there are a few MySQL-functions on the web implementing DoubleMetaphone. I think this is what you are searching:
GitHub
I'm using Join(Lookupset) to find unique group values which returns a sequence number. This is my function:
Join(LookupSet(Fields!itemId.Value & Fields!UseByDate.Value & Fields!rackId.Value
, Fields!itemId.Value & Fields!UseByDate.Value & Fields!rackId.Value
, Fields!CustomerSeqNo.Value
, "PickingList"), ",")
The problem is on some items there are multiple transactions. I want to remove the duplicates.
I found a blog http://blogs.msdn.com/b/bobmeyers/archive/2012/06/18/creating-short-lists-using-the-lookupset-function.aspx but could not get SSRS Report Builder to reference Linq assembly. My issue is
How can I just show the unique values?
You don't need Linq, but you do still need custom code (in BIDS go to Report -> Report Properties -> Code)
You can put a RemoveDuplicates function in here, something like this:
Public Shared Function RemoveDuplicates(m_Array As Object()) As String()
System.Array.Sort(m_Array)
Dim k As Integer = 0
For i As Integer = 0 To m_Array.Length - 1
If i > 0 AndAlso m_Array(i).Equals(m_Array(i - 1)) Then
Continue For
End If
m_Array(k) = m_Array(i)
k += 1
Next
Dim unique As [String]() = New [String](k - 1) {}
System.Array.Copy(m_Array, 0, unique, 0, k)
Return unique
End Function
To use it in your Join:
Join(Code.RemoveDuplicates(LookupSet(...)),",")
I agree with #user3697615 that Report Code is best. However, I prefer to build it straight into a string:
public shared function JoinDistinct(
dups as object(),
delimiter as string
) as string
dim result as string = ""
system.array.sort(dups)
for i as integer = 0 to dups.length - 1
if i <> 0 then result += delimiter
if i = 0 orElse dups(i) <> dups(i-1) then result += dups(i)
next i
return result
end function
This way, we eliminate one nested function on the call:
=Code.JoinDistinct(LookupSet(...), ",")
If you're like me, you also want the elements in order based on frequency (descending order).
I created the following VisualBasic code to do so
Public Shared Function RemoveDuplicates(dataset As Object()) As String()
Dim unique As New System.Collections.Generic.List(Of String)
Dim frequency As New System.Collections.Generic.List(Of Integer)
For i As Integer = 0 To dataset.Length - 1
Dim index As Integer = -1
For j As Integer = 0 To unique.Count - 1
If dataset(i).Equals(unique(j)) Then
index = j
Exit For
End If
Next
If index < 0 Then
unique.Add(dataset(i))
frequency.Add(1)
Else
frequency(index) += 1
End If
Next
Dim uniqueArray As [String]() = unique.ToArray()
Array.Sort(frequency.ToArray(), uniqueArray)
Array.Reverse(uniqueArray)
return uniqueArray
End Function
This is based off others' answers where the SSRS expression is the following
Join(Code.RemoveDuplicates(LookupSet(...)),",")
Note: I learned VisualBasic in about an hour to solve this problem, so my algorithm probably isn't the most efficient.
I liked pwilcox's idea, so I wrote this one which filters out null and blank values.
Public Function JoinDistinct(arr As Object(), delimiter As String) As String
System.Array.Sort(arr)
Dim result As String = String.Empty
Dim lastvalue As String = String.Empty
For i As Integer = 0 To arr.Length - 1
If Not arr(i) Is Nothing And arr(i) <> lastvalue And arr(i) <> String.Empty Then
If result = String.Empty Then
result = arr(i)
Else
result = result + delimiter + arr(i)
End If
End If
lastvalue = arr(i)
Next
Return result
End Function
Usage:
=Code.JoinDistinct(LookupSet(...), ",")
I am running the below expression to compare the diffence of 2 dates. If both dates are in the cell I would like it to return a 0 but if Date2 is blank I would like the difference to show. Right now I just get #ERROR if there is no date in date2. Any ideas would be greatly appreciated.
expr2: NetWorkDays([Date1],[Date2])
Option Compare Database
Public Function NetWorkdays(dteStart As Date, dteEnd As Date) As Integer
Dim intGrossDays As Integer
Dim dteCurrDate As Date
Dim i As Integer
intGrossDays = DateDiff("d", dteStart, dteEnd)
NetWorkdays = 0
For i = 0 To intGrossDays
dteCurrDate = dteStart + i
If Weekday(dteCurrDate, vbMonday) < 6 Then
End If
Next i
End Function
The function will always return 0 if you don't remove the NetWorkdays = 0 from the function, and you will continue you to get an error if you don't wrap where you call the function in an if statement like this:
If Not IsNull(Date2) Then
txtResult = NetWorkdays(Date1, Date2)
Else
txtResult = 0
End If
txtResult being the textbox you want to display your results in.
You may want to look at this link http://msdn.microsoft.com/en-us/library/bb258196(v=office.12).aspx. It is a function designed for access to calculate the number of workdays between two dates.
Using this function you should get the results you want doing something like this:
If Not IsNull(Date2) Then
txtResult = 0
Else
txtResult = Work_Days(Date1, Now())
End If
I have a query to return random distinct rows from an Access database. Here is the query:
SELECT * FROM
(SELECT DISTINCT m.MemberID, m.Title, m.FullName, m.Address,
m.Phone, m.EmailAddress, m.WebsiteAddress FROM Members AS m INNER JOIN MembersForType AS t ON m.MemberID = t.MemberID WHERE
(Category = 'MemberType1' OR Category = 'MemberType2')) as Members
ORDER BY RND(members.MemberID) DESC
When I run this in Access it returns the rows in different order every time, as per the random sort order. When I run it through my web app however the rows return in the same order every time. Here is how I call it in my code-behind:
private void BindData()
{
using (AccessDataSource ds = new AccessDataSource("~/App_Data/mydb.mdb", GetSQLStatement()))
{
ds.DataSourceMode = SqlDataSourceMode.DataReader;
ds.CacheDuration = 0;
ds.CacheExpirationPolicy = DataSourceCacheExpiry.Absolute;
ds.EnableCaching = false;
listing.DataSource = ds.Select(new DataSourceSelectArguments());
listing.DataBind();
if (listing.Items.Count == 0)
noResults.Visible = true;
else
noResults.Visible = false;
}
}
I added in all that stuff about caching because I thought maybe the query was being cached but the result was the same. I put a breakpoint in the code to make sure the query was the same as above and it was.
Any ideas? This is driving me nuts.
When executing the ACE/Jet RND function against a new connection the same seed value is used each time. When using MS Access you are using the same connection each time, which explains why you get a different value each time.
Consider these VBA examples: the first uses a new connection on each iteration:
Sub TestDiff()
Dim con As Object
Set con = CreateObject("ADODB.Connection")
With con
.ConnectionString = _
"Provider=MSDataShape;Data " & _
"Provider=Microsoft.ACE.OLEDB.12.0;" & _
"Data Source=C:\Tempo\Test_Access2007.accdb"
.CursorLocation = 3
Dim i As Long
For i = 0 To 2
.Open
Debug.Print .Execute("SELECT RND FROM OneRowTable;")(0)
.Close
Next
End With
End Sub
Output:
0.705547511577606
0.705547511577606
0.705547511577606
Note the same value each time.
The second example uses the same connection on each iteration (the .Open and .Close statements are relocated outside the loop):
Sub TestSame()
Dim con As Object
Set con = CreateObject("ADODB.Connection")
With con
.ConnectionString = _
"Provider=MSDataShape;Data " & _
"Provider=Microsoft.ACE.OLEDB.12.0;" & _
"Data Source=C:\Tempo\Test_Access2007.accdb"
.CursorLocation = 3
.Open
Dim i As Long
For i = 0 To 2
Debug.Print .Execute("SELECT RND FROM OneRowTable;")(0)
Next
.Close
End With
End Sub
Output:
0.705547511577606
0.533424019813538
0.579518616199493
Note different values each time.
In VBA code you can use the Randomize keyword to seed the Rnd() function but I don't think this can be done in ACE/Jet. One workaround is to use the least significant decimal portion of the ACE/Jet the NOW() niladic function e.g. something like:
SELECT CDBL(NOW()) - ROUND(CDBL(NOW()), 4) FROM OneRowTable
I would move the RND into the inner SELECT
SELECT * FROM
(SELECT DISTINCT m.MemberID, RND(m.MemberID) as SortOrder, m.Title,
m.FullName, m.Address, m.Phone, m.EmailAddress, m.WebsiteAddress
FROM Members AS m
INNER JOIN MembersForType AS t ON m.MemberID = t.MemberID
WHERE
(Category = 'MemberType1' OR Category = 'MemberType2')) as Members
ORDER BY
Members.SortOrder DESC
You can use time as one argument to the RND field
Dim Now As DateTime = DateTime.Now
Dim millSec As Integer = Now.Millisecond
finalQuery = "SELECT * FROM wordInfo ORDER BY Rnd(-(1000* ROUND(" + millSec.ToString("N") + ", 0)) * [ID])"
So here from date and time value, millisecond value is taken which will be integer and it is used in sql query by rounding it.
wordInfo is table name
ID is the column name in database table
This gives random order every time (since millisecond value is different) be it same connection or new connection.