Excel VBA / SQL Union
I am trying to Join 2 separate columns from 2 different sheets to make a longer column from which i can then use a Vlookup from.
Sheet1 A, B, C, D, E, F, G
Sheet2 A, B, C, D, E, F, G
I want to Join(Union) Columns B from sheet1 and C from sheet2 together and find the Distinct values of the new list. I have been working on this for weeks.
You can use ADO with Excel.
Dim cn As Object Dim rs As Object Dim strFile As String Dim strCon As String Dim strSQL As String Dim s As String Dim i As Integer, j As Integer ''This is not the best way to refer to the workbook ''you want, but it is very conveient for notes ''It is probably best to use the name of the workbook. strFile = ActiveWorkbook.FullName ''Note that if HDR=No, F1,F2 etc are used for column names, ''if HDR=Yes, the names in the first row of the range ''can be used. ''This is the Jet 4 connection string, you can get more ''here : http://www.connectionstrings.com/excel strCon = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & strFile _ & ";Extended Properties=""Excel 8.0;HDR=Yes;IMEX=1"";" ''Late binding, so no reference is needed Set cn = CreateObject("ADODB.Connection") Set rs = CreateObject("ADODB.Recordset") cn.Open strCon ''A sample query strSQL = "SELECT Distinct A, B C FROM ( " _ & "SELECT A, B, C " _ & "FROM [Sheet1$] " _ & "UNION ALL " _ & "SELECT A, B, C " _ & "FROM [Sheet2$] ) As J " ''Open the recordset for more processing ''Cursor Type: 3, adOpenStatic ''Lock Type: 3, adLockOptimistic ''Not everything can be done with every cirsor type and ''lock type. See http://www.w3schools.com/ado/met_rs_open.asp rs.Open strSQL, cn, 3, 3 ''Write out the data to an empty sheet (no headers) Worksheets("Sheet3").Cells(2, 1).CopyFromRecordset rss