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MS Access - return list of dates with no record

Posted on 2009-05-16
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Last Modified: 2013-11-27
I have a SQL Server database with an Access front end.  The database is of event bookings.  I would like to design a query that lists Saturday and Sunday dates with no events booked.

The end object is to publish it to the web so I can create last minute deals.
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Question by:les28
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Guy Hengel [angelIII / a3] earned 2000 total points
ID: 24404300
what you need is a calendar table, with (all) the dates.
once you have that (and believe me, that table WILL serve later also), you can fetch, from there, easily all the dates that are a saturday/sunday:
datepart(weekday, your_date_field) in (6,7)
the values 6 and 7 are if the DATE_FIRST setting is set to monday.

once you have that query, you just left join to your table.
"just" fill in your table and column names as fit:
SELECT cd.date_value
  FROM your_calendar_table cd
  LEFT JOIN your_boooking_table b
    ON b.booking_date = cd.date_value
 WHERE datepart(weekday, cd.date_value) in (6,7)
   AND b.booking_date IS NULL  ---- < this is the part that will make the query to return the dates with no bookings

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by:les28
ID: 31582284
Thanks very much.  I'll give it a try
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