How to write join select query in MSAccess?

StackOverflow https://stackoverflow.com/questions/1496210

  •  19-09-2019
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Question

Say I have these tables with field names underneath.

DailyLeaveLedger
dldEmployeeID
dldLeaveDate

InvoiceHeader
invEmployeeID
invWeekEnding
InvNumberWeeksCovered

So I want a query selects leave days where an invoice covers that leave ie invWeekEnding 02 Oct and InvNumberWeeksCovered = 1 then any leave in the range 26 Sep to 02 Oct is ok. Also you have to have EmployeeiD fields match.

In MSAccess 2003 please?

Was it helpful?

Solution

Try this

SELECT InvoiceHeader.invEmployeeID, 
       InvoiceHeader.invWeekEnding, 
       DateAdd("d",-[InvNumberWeeksCovered]*7,[invWeekEnding]) AS StartDate,
       DailyLeaveLedger.dldLeaveDate
  FROM InvoiceHeader 
       INNER JOIN DailyLeaveLedger 
          ON InvoiceHeader.invEmployeeID = DailyLeaveLedger.dldEmployeeID
WHERE (((DailyLeaveLedger.dldLeaveDate) 
         Between [invWeekEnding] 
         And DateAdd("d",-[InvNumberWeeksCovered]*7,[invWeekEnding])));

What I did was add -7 * InvNumberWeeksCovered to the invdate, and then check for dates between these.

Hope that helps.

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