How to do an INNER JOIN in SSIS Excel Source component

Question

SELECT   [Sheet1$].ID,
CLng([Sheet1$].RecordID) AS RecordID, 
[Sheet1$].col1, 
[Sheet1$].col2, 
[Sheet1$].col3, 
[Sheet1$].col4, 
[Sheet1$].col5,
[Sheet2$].Name
FROM             


        

Answer 1

Ok, i was doing it the wrong way. Microsoft access database engine used by the SSIS Excel Source component handles joins differently than SQL Server.

Apparently, you need to have n - 2 left parentheses after the from clause and one right parenthesis before the start of each new join clause except for the first, where n is the number of tables being joined together.

The reason is that Access's join syntax supports joining only two tables at a time, so if you need to join more than two you need to enclose the extra ones in parentheses.

Quoted from Access-SQL: Inner Join with multiple tables

And confirmed at http://office.microsoft.com/en-001/access-help/inner-join-operation-HA001231487.aspx

So the below query now works

SELECT   [Sheet1$].ID,
CLng([Shee1$].RecordID) AS RecordID, 
[Sheet1$].col1, 
[Sheet1$].col2, 
[Sheet1$].col3, 
[Sheet1$].col4, 
[Sheet1$].col5,
[Sheet2$].Name
FROM      (([Sheet1$])
INNER JOIN [Sheet2$] ON [Sheet1$].RecordID = [Sheet2$].RecordID)
INNER JOIN [Sheet3$] ON [Sheet1$].RecordID = [Sheet3$].RecordID

Answer 2

Lets try to cheat:

SELECT  
    CLng(x.RecordID) AS RecordID, 
    x.col1, 
    x.col2, 
    x.col3, 
    x.col4, 
    x.col5,
    x.Name
    FROM (
    SELECT
    [Sheet1$].RecordID, 
    [Sheet1$].col1, 
    [Sheet1$].col2, 
    [Sheet1$].col3, 
    [Sheet1$].col4, 
    [Sheet1$].col5,
    [Sheet2$].Name    
    FROM [Sheet1$]
    INNER JOIN [Sheet2$] ON 
    [Sheet1$].RecordID = [Sheet2$].RecordID
) as x
    INNER JOIN [Sheet3$] ON 
    x.RecordID = [Sheet3$].RecordID