I got stuck in the problem beneath, because I don´t use Access or Excel much and I have some basic programming language. So here's the deal:
I just made a fairly simple database in MS Access (2007) with a nice query to retrieve data, depending on which parameters you pass. In Excel (2007), I have this big 'template' which basically has parameters for the query. These parameters change per column & per row!
Perhaps superfluously, e.g.
column A contains paramA (10 different options)
column B contains paramB (8 different options)
column C contains paramC (2 different options)
What I'd like to do is to fill this template with dynamic data from Access, minding the continously changing parameters.
e.g.
column D contains Query (ParamA, ParamB, ParamC)
Best way to go I think is to make a (inline?) function that retrieves results from the query, also passing the parameters depending on the relative cell position. And this function is then copied as a normal inline excel function (like: SUM()).
I just don't know how to call /execute an MS Access query from inside an Excel Macro function.
Could someone help me with it? Thank you very much in advance!
A few notes.
Dim cn As Object
Dim rs As Object
''See: http://www.connectionstrings.com/access
strFile = "C:\Docs\AccessDB.mdb"
strCon = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & strFile _
& ";User Id=admin;Password=;"
Set cn = CreateObject("ADODB.Connection")
Set rs = CreateObject("ADODB.Recordset")
cn.Open strCon
strSQL = "SELECT SomeField, OtherField FROM SomeTable " _
& "WHERE SomeText='" & Range("A1") & "'"
rs.Open strSQL, cn
s = rs.GetString
MsgBox s
'' Or
Sheets("Sheet2").Cells(2, 1).CopyFromRecordset rs
To add to Remou's answer also see
Modules: Sample Excel Automation - cell by cell which is slow and
Modules: Transferring Records to Excel with Automation
Late binding means you can safely remove the reference and only have an error when the app executes lines of code in question. Rather than erroring out while starting up the app and not allowing the users in the app at all. Or when hitting a mid, left or trim function call.
This also is very useful when you don't know version of the external application will reside on the target system. Or if your organization is in the middle of moving from one version to another.
For more information including additional text and some detailed links see the "Late Binding in Microsoft Access" page
Related
Very frustrating results from:
ws.Range(myExcelTable).CopyFromRecordset rs
' myExcelTable is a named table with assigned range
The pull for rs (the recordset, is a select all, doesn't matter if it is done this way or with field names, it is the same result)
cmdSQL2 = "SELECT * FROM " & myAccessTable
rs.Open cmdSQL2, conn
For an unknown reason it copies records into excel in this order (using pID to show ordering):
3-8
0-2
9-number of records
I have tried several range methods and the result is the same.
I will "hand bomb" them here to cut out the extra work I performed in building range strings.
ws.Range("S4").CopyFromRecordset rs
ws.Range("S4:BP258").CopyFromRecordset rs
This behavior does not appear if the table you are copying from Access has only one Field (column) and the Table in Excel has a single header (column), but it is appearing for me now in this multi-field table.
I feel this is happening when the recordset is actually created somehow and not on the "paste" or assignment side (Excel).
'*************************************************************************
Problem Solved by this SO Contributor (will leave here until it is placed as an answer):
https://stackoverflow.com/users/7296893/erik-a
Using ORDER BY in the sql sommand:
cmdSQL2 = "SELECT * FROM " & myAccessTable & " ORDER BY " & primaryKey
From immediate window (removes the variables so you can see the command better for those new to such things:
SELECT * FROM County_Directory ORDER BY [pID]
'*************************************************************************
Is there any way to read all the data from excel and put it in the datatable or any other container so that i can filter the data based on the conditions required. As shown in attached image i want to get the CuValue of a Partnumber whose status is Success and i want the latest record based on the Calculation date(Latest calculation date). In the below example i want the CuValue 11292 as it is the latest record with status Success..lue.
Thanks in advance
Your question seems very broad, but you're right to ask because there are many different possibilities and pitfalls.
As you don't provide any sample code, i assume you are looking for a strategy, so here is it.
In short: create a database, a table and a stored procedure. Copy the
data you need in this table, and then query the table to get the
result.
You may use ADO for this task. If it is not available on your machine you can download and install the MDAC redistributable from the Microsoft web site.
The advantage vs. OLE Automation is that you doesn't need to install Excel on the target machine where the import shall be executed, so you can execute the import also server-side.
With ADO installed, you will need to create two Connection objects, a Recordset object to read the data from the Excel file and a Command object to execute a stored procedure which will do the INSERT or the UPDATE of the subset of the source fields in the destination table.
Following is a guideline which you should expand and adjust, if you find it useful for your task:
Option Explicit
Dim PartNo as String, CuValue as Long, Status as String, CalcDate as Date
' objects you need:
Dim srcConn As New ADODB.Connection
Dim cmd As New ADODB.Command
Dim rs As New ADODB.Recordset
Dim dstConn As New ADODB.Connection
' Example connection with your destination database
dstConn.Open *your connection string*
'Example connection with Excel - HDR is discussed below
srcConn.Open "Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=C:\Scripts\Test.xls;" & _
"Extended Properties=""Excel 8.0; HDR=NO;"";"
rs.Open "SELECT * FROM [Sheet1$]", _
srcConn, adOpenForwardOnly, adLockReadOnly, adCmdText
' Import
Do Until rs.EOF
PartNo = rs.Fields.Item(0);
CuValue = rs.Fields.Item(1);
CalcDate = rs.Fields.Item(6);
Status = rs.Fields.Item(7);
If Status = "Success" Then
'NumSuccess = NumSuccess + 1
' copy data to your database
' using a stored procedure
cmd.CommandText = "InsertWithDateCheck"
cmd.CommandType = adCmdStoredProc
cmd(1) = PartNo
cmd(2) = CuValue
cmd(3) = CalcDate
cmd.ActiveConnection = dstConn
cmd.Execute
Else
'NumFail = NumFail + 1
End If
rs.MoveNext
Loop
rs.Close
Set rs = Nothing
srcConn.Close
Set srcConn = Nothing
dstConn.Close
Set dstConn = Nothing
'
By using a stored procedure to check the data and execute the insert or update in your new table, you will be able to read from Excel in fast forward-only mode and write a copy of the data with the minimum of time loss, delegating to the database engine half the work.
You see, the stored procedure will receive three values. Inside the stored procedure you should insert or update this values. Primary key of the table shall be PartNo. Check the Calculation Date and, if more recent, update CuValue.
By googling on the net you will find enough samples to write such a stored procedure.
After your table is populated, just use another recordset to get the data and whatever tool you need to display the values.
Pitfalls reading from Excel:
The provider of your Excel file shall agree to remove the first two or three rows, otherwise you will have some more work for the creation of a fictitious recordset, because the intelligent datatype recognition of Excel may fail.
As you know, Excel cells are not constrained to the same data type per-column as in almost all databases.
If you maintain the field names, use HDR=YES, without all the first three rows, use HDR=NO.
Always keep a log of the "Success" and "Fail" number of records read
in your program, then compare these values with the original overall
number of rows in Excel.
Feel free to ask for more details, anyway i think this should be enough for you to start.
There are lots ways you can do this.
1. You can create an access DB table and import by saving your sheet as can file first, into the access table. Then you can write queries.
2. You can create a sql DB and a table, write some code to import the sheet into that table.
3. You can Write some code in VBA and accomplish that task if your data is not very big.
4. You can write c# code to access the sheet using excel.application and office objects, create a data table and query that data table
Depends on what skills you want to employ to accomplish your task.
I need to import data from SAS to excel via VBA. The import needs to run eg. on workbookOpen or Worksheet_BeforeDoubleClick or it can be called in any macro. This is solved in the below code:
Sub GetSASdata()
Dim obConnection As ADODB.Connection
Dim obRecordset As ADODB.Recordset
Dim i As Integer
Set obConnection = New ADODB.Connection
' Do not get stuck on the choice of connection provider.
obConnection.Provider = "sas.LocalProvider"
obConnection.Properties("Data Source") = "C:\path\"
obConnection.Open
Set obRecordset = New ADODB.Recordset
obRecordset.Open "MySAStable", obConnection, adOpenDynamic, adLockReadOnly, ADODB.adCmdTableDirect
'add header row
Cells(1, 1).Select
For i = 0 To obRecordset.Fields.Count - 1
ActiveCell.Offset(0, i).Value = obRecordset.Fields(i).Name
Next i
obRecordset.MoveFirst
obRecordset.Filter = "Weight > 0"
Cells(2, 1).Select
ActiveCell.CopyFromRecordset obRecordset, 100
obRecordset.Close
Set obRecordset = Nothing
obConnection.Close
Set obConnection = Nothing
End Sub
In this example I have restricted the output to be only the first 100 rows. However, the original data set is 1.4 m rows and 150 columns, and I want to be able to restrict the data import to only take columns that I define and rows which meet certain criteria. In sql terms:
select col1, col2, col10, col11 from MySAStable where code = MyCode and Date > MyDate
But I cannot find a way to do it. The first criteria is that the code should run entirely from Excel.
I have experimented some with obRecordset.Filter but the performance is poor. It takes forever. So idealy I would like to import only the data that I need. Is there a way to do this?
The
obConnection.Provider = "sas.LocalProvider"
is arbitrary. I found an example online, tested it and it worked. If someone has an answer to my problem that involves a different connection type, i am still interested to know. Very idealy the code can also be run by users who do not have SAS installed on their computer (but have access to the folder where data is placed.)
Thank you for any help
I have used two methods to read SAS data from within Excel.
The first uses SAS Add-In to MS Office. Do you have this product?
You can define the source with filters, and when the user opens the workbook, it will automatically refresh agains the datasource. You can also automate the refresh task with VBA code.
Secondly, I have done it with a Stored Process. If you have a stored process server, you can set up a web query in Excel and read the Stored Process that way, using any filter you need.
I have an Excel Spreadsheet that calculates a risk (of perioperative mortality after aneurysm repair) based on various test results.
The user inputs the test results into the spreadsheet (into cells) and then out comes a set of figures (about 6 results) for the various models that predict mortality. The spreadsheet acts as a complex function to produce the results one patient at a time.
I also have a (separate) access database holding data on multiple patients - including all the data on test results that go into the spreadsheet. At the moment I have to manually input this data into the spreadsheet, get the results out and then manually enter them onto the database.
Is there a way of doing this automatically. Ie can I export data1, data2, data3... from Access into the spreadsheet to the cells where the data needs to be input and then get the results (result1, result2, result3...) from the cells where the results are displayed ported back into access.
Ideally this could be done live.
I suppose I could try to program the functionality of the spreadheet into a complex function in access, but if I'm honest, I am not really sure how the algorithm in the spreadsheet works. It was designed by anaesthetists who are much cleverer than me....
Hope this makes sense. Any help much appreciated.
Chris Hammond
It's possible to automate Excel from Access.
Const cstrFile As String = "C:\SomeFolder\foo.xls"
Dim xlApp As Object
Dim xlWrkBk As Object
Dim xlWrkSt As Object
Set xlApp = CreateObject("Excel.Application")
xlApp.Workbooks.Open cstrFile, ReadOnly:=True
Set xlWrkBk = xlApp.Workbooks(1)
Set xlWrkSt = xlWrkBk.Worksheets(1)
With xlWrkSt
.Range("A1") = 2
.Range("A2") = 19
Debug.Print .Range("A3")
End With
xlWrkBk.Close SaveChanges:=False
However, that seems like it would be cumbersome to repeat for each row of an Access table and I'm uncertain whether doing that live is reasonable.
I would try to adapt the Excel calculations to Access VBA functions and use those custom functions in an Access query. But I don't know how big of a task that would be. I suggest you shouldn't be scared off the the anaesthetists' cleverness; that doesn't mean they actually know much more about VBA than you. At least look to see whether you can tackle it.
To push the data back to Access, you can insert data from within the Excel VBA as follows:
dim val as variant
dim db as DAO.Database
val=thisworkbook.range("a1").value
set db=OpenDatabase("c:\myAccessDB.accdb")
db.execute "insert into patientData (someField) values (" & val & ")",dbFailOnError
db.Close
You'll need to add a reference to the Microsoft Office Access Database Engine Object Library.
Not sure to perfectly understand what you want, but if you just want to export the results of a query to a spreadsheet, you could use the following:
Private Sub ExportAccessDataToExcel()
Dim SqlString As String
SqlString = "CREATE TABLE testMeasurements (TestName TEXT, Status TEXT)"
DoCmd.RunSQL (SqlString)
SqlString = "INSERT INTO testMeasurements VALUES('Average Power','PASS')"
DoCmd.RunSQL (SqlString)
SqlString = "INSERT INTO testMeasurements VALUES('Power Vs Time','FAIL')"
DoCmd.RunSQL (SqlString)
SqlString = "SELECT testMeasurements.TestName, testMeasurements.Status INTO exportToExcel "
SqlString = SqlString & "FROM testMeasurements "
SqlString = SqlString & "WHERE (((testMeasurements.TestName)='Average Power'));"
DoCmd.RunSQL (SqlString)
DoCmd.TransferSpreadsheet acExport, acSpreadsheetTypeExcel7, "exportToExcel", "C:\TestMeasurements.xls", True, "A1:G12"
End Sub
Source: http://www.ehow.com/how_7326712_save-access-query-excel-vba.html
This could be done either directly from the database or from Excel (you would need to open the database with Excel VBA to do so, but most of the Office Suite products interact well with each other).
If you want to push the data of your spreadsheet into an Access database, that's different. You just have to open the database and loop through INSERT query. Here is a quick example, you just need to add the loop:
Dim db as DAO.Database
Set db = OpenDatabase(myDataBase.mdb)
Call db.Execute("INSERT INTO myTable (Field1, Field2) VALUES('Value1', 'Value2')")
I have an excel dokument (tab delimitted). Every time before i can insert the excel in my program, i need to map the clients column names to the ones in my app.
So before i begin developing a mapping tool - it would be better if such already existed. But, i don't know i didn't find it.
This tool would actually read an excel or txt file, allow me to name all the names of the new columns on the right and drag and drop (for example).
Maybe this tool has an xml or something where i can define my custom columns, and then it would show op on the right side.
I hope you know what i mean and that someone also had the need for this.
Thanks
info update
I wanted to mention a few things as an update to my question if it's not to late: I have about 50 headers/columns (example: First Name, Middle Name, Street1, Street2,..). So what i always need do every time a client gives me his excel file (contacts backup) is manually copy data for each of his column to the one on my side. And the problem is, every client has different column names, and also some of the columns of the client can go to multiple columns on my side.
So i think, if i can't find a solution, i would make a c++/qt app, which takes an excell and lets me to assign (dragdrop,etc..) every column of his side to on or more columns of my side.
I haven't done any vb programming, so if you can be a bit more detailed about how to aproach the solution i vb that would be great.
Firs part of answer: You can achieve it with a simple vbscript. Copy this code in a vbs extension text file and double click.
Dim oCN As Connection
Dim fs As Scripting.FileSystemObject
Set oCN = New Connection
Set fs = New Scripting.FileSystemObject
sCSVFileName = "C:\Temp\Test1.csv"
sSourceSql = "SELECT field1 as f1, field2 as f2, ... FROM " &
fs.GetFileName(sCSVFileName )
sDestinationTable = "yourAppTable"
With oCN
.Provider = "Microsoft.Jet.OLEDB.4.0"
.Properties("Extended Properties").Value =
"TEXT;HDR=YES;FMT=TabDelimited;MAXSCANROWS=0"
.Open fs.GetFile(sCSVFileName).ParentFolder
End With
sSql = "INSERT INTO [ODBC;DRIVER={SQL Server};Server=" &
ServerName & ";Database=" & DBName & _
IIf(IntegratedSecurity, ";Trusted_Connection=Yes;", _
";UID=" & UID & ";PWD=" & PWD & ";") & _
"]." & sDestinationTable & " " & sSourceSql
oCN.Execute sSql, , adExecuteNoRecords
More info at microsoft social forums
Also, you can parametrize mapping (source and destination tables and mapping fields) with a external xml file.
Second part of answer: You ask if somebody else have this needed and if this is a good idea. Well, this is a very good proposal. And for this reason they are some solutions with this functionality.
First of all, this kind of technology is named ETL. Extract - Transform - Load.
Each database has its own tool
SQL Server Import and Export Wizard
Oracle data pump and loader
etc.
Also exists specific technologies:
SSIS from microsoft.
IBM WebSphere DataStage
etc.
All this tools have mapping columns capabilities.
i use a generic mapping mechanism for that, configured by a couple arrays where you put the names used in your app (aDsNames) with these in your source, the csv file in your case (aDbNames)
I walk the fields in the source, check if the getDbName(name) is in aDsNames and if so write the value in the insertstring to the database.
You can do this both ways, usually my app requests a field to the databasemodule on the server, this module translates to the databasename and does the select.
Hope this is helpfull..
Cheers
select case store
case "store1Midoc"
aDbNames = array("id" , "beheerder", "datumlijst", "rnr13" , "datvan", "dattot", "opmerking", "status" , "waarde", "kode" , "type")
aDsNames = array("id" , "persnr ", "datum ", "rnr13" , "datvan", "dattot", "opmerking", "status" , "waarde", "kode" , "type")
aTypes = array("number", "string", "date" , "string", "date" , "date" , "string" , "number", "number", "string", "string")
case .....
end select
Function getDbName(dsName)
Dim a
getDbName = "undefined"
If instr(join(aDsNames,","),dsName) Then
For a = 0 to UBound(aDbNames)
If aDsNames(a) = dsName Then
getDbName = aDbNames(a)
End If
Next
End If
End Function