I have an SQL database that stores millions of mine sample results.
Every quarter selected samples need to be pulled for analysis for
royalty payments. I want to query the SQL database and pull back all
of the relevant results into memory. Then I have the operator scan in
the sample barcode and vba tells the operator (via a userform) which
claim the sample is in and if it needs to be analyzed for this
quarter.
I've posted the relevant portion of the code I am having problems with.
Because of excels row limitation, I have to query the database in
chunks of 65000. I've tested each of these modules individually and
they work. However when put together, the query does not update
itself to get new data when it's conditions have changed.
I want to stay away from having the code query each time a sample is
scanned because the line to the SQL server experiences a high volume of
traffic resulting in a 5 - 10 second wait for each query. So the idea
is that the program runs when the spreadsheet opens and pulls all of
the data into memory. From there the operator can scan and get
instantaneous results.
Any ideas on how to get the query to refresh based on its new
parameters instead of just using the first parameters given in the
first loop? The SQL code was written using the macro recorder so it
isn't pretty but it works. The red text indicates the place where the
conditions are changed for each loop.
Code:
--------------------
SUB COMMANDMODULE()
Dim QueryFlag As Boolean, StartNum As Long, EndNum As Long, Count As Long
QueryFlag = True
Dim ID() As String, Royalty() As Integer, Class() As Integer, MineDate() As Long
Do Until QueryFlag = False
StartNum = EndNum + 1
EndNum = StartNum + 64999
Call ChangeCondition(StartNum, EndNum)
Call Query
Call LoadArray(QueryFlag, ID, Royalty, Class, MineDate, Count)
Call DeleteQuery
Loop
End Sub
SUB CHANGECONDITION(STARTNUM, ENDNUM)
Dim First As String, Last As String, Line7 As String
Select Case Len(StartNum)
Case Is = 1: First = "MOPB00000" & StartNum
Case Is = 2: First = "MOPB0000" & StartNum
Case Is = 3: First = "MOPB000" & StartNum
Case Is = 4: First = "MOPB00" & StartNum
Case Is = 5: First = "MOPB0" & StartNum
Case Else: First = "MOPB" & StartNum
End Select
Select Case Len(EndNum)
Case Is = 1: Last = "MOPB00000" & EndNum
Case Is = 2: Last = "MOPB0000" & EndNum
Case Is = 3: Last = "MOPB000" & EndNum
Case Is = 4: Last = "MOPB00" & EndNum
Case Is = 5: Last = "MOPB0" & EndNum
Case Else: Last = "MOPB" & EndNum
End Select
Line7 = " .CommandText = Array(" & Chr(34) & "SELECT sstn_surface_samples.sample_number, sstn_surface_samples.Royalty, sstn_surface_samples.Type, sstn_surface_samples.Mined" & Chr(34) & " & Chr(13) & " & Chr(34) & Chr(34) & " & Chr(10) & " & Chr(34) & "FROM Fusion_Central.dbo.sstn_surface_samples sstn_surface_samples" & Chr(34) & " & Chr(13) & " & Chr(34) & Chr(34) & " & Chr(10) & " & Chr(34) & "WHERE" & Chr(34) & ", " & Chr(34) & " (sstn_surface_samples.sample_number='" & First & "' And sstn_surface_samples.sample_number<='" & Last & "')" & Chr(34) & ")"
Application.VBE.ActiveVBProject.VBComponents("d_Qu ery").CodeModule.ReplaceLine 7, Line7
End Sub
SUB QUERY()
ThisWorkbook.Worksheets("Query").Activate
With ActiveSheet.QueryTables.Add(Connection:="ODBC;DSN= central;UID=admin;PWD=xyz;APP=Microsoft Office 2003;WSID=USCCWEBMETLURGI;DATABASE=Fusion_Central; Network=DBMSSOCN", Destination:=Range("A1"))
.CommandText = Array("SELECT sstn_surface_samples.sample_number, sstn_surface_samples.Royalty, sstn_surface_samples.Type, sstn_surface_samples.Mined" & Chr(13) & "" & Chr(10) & "FROM Fusion_Central.dbo.sstn_surface_samples sstn_surface_samples" & Chr(13) & "" & Chr(10) & "WHERE", " (sstn_surface_samples.sample_number='MOPB000001' And sstn_surface_samples.sample_number<='MOPB065000')" )
.Name = "Query from central"
.FieldNames = True
.RowNumbers = False
.FillAdjacentFormulas = False
.PreserveFormatting = True
.RefreshOnFileOpen = False
.BackgroundQuery = True
.RefreshStyle = xlOverwriteCells
.SavePassword = True
.SaveData = False
.AdjustColumnWidth = True
.RefreshPeriod = 0
.PreserveColumnInfo = True
.Refresh BackgroundQuery:=False
End With
End Sub
SUB LOADARRAY(QUERYFLAG, ID, ROYALTY, CLASS, MINEDATE, COUNT)
Range("A2").Select
If Selection.Value = "" Then
QueryFlag = False
Exit Sub
End If
Dim J As Long, v As Variant, OldCount As Long
Range(Selection, Selection.Offset(0, 3)).Select
Range(Selection, Selection.End(xlDown)).Select
Selection.Name = "Data"
v = [Data]
OldCount = Count
Count = Count + UBound(v, 1)
ReDim Preserve ID(Count)
ReDim Preserve Royalty(Count)
ReDim Preserve Class(Count)
ReDim Preserve MineDate(Count)
For J = 1 To UBound(v, 1)
ID(J + OldCount) = v(J, 1)
Royalty(J + OldCount) = v(J, 2)
Class(J + OldCount) = v(J, 3)
MineDate(J + OldCount) = v(J, 4)
Next J
'***I've tried using the following 4 lines of code and and also commenting it out and either way it is not helpful.***
Dim TheName As Name
For Each TheName In ActiveWorkbook.Names
TheName.Delete
Next
End Sub
SUB DELETEQUERY()
Application.Worksheets("Query").Activate
Cells.Select
Selection.ClearContents
On Error Resume Next
Selection.QueryTable.Delete
End Sub
--------------------
--
Laurin
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