How Can I Perform SQL INTERSECT and MINUS Operations in MS Access?

Performing SQL INTERSECT and MINUS Operations in MS Access

MS Access users seeking to utilize SQL INTERSECT and MINUS operations may encounter a lack of readily available information. However, rest assured, these operations can be replicated using alternative methods.

INTERSECT Operation

To execute an INTERSECT operation, which resembles an inner join, you can employ the following code:

select distinct
  a.*
from
  a
  inner join b on a.id = b.id

This query will return only the records that share the same ID in both tables 'a' and 'b'.

MINUS Operation

MINUS, an outer join that excludes records present in the second table, can be achieved using the code:

select distinct
  a.*
from
  a
  left outer join b on a.id = b.id
where
  b.id is null

In this query, 'a' represents the primary table, while 'b' is the comparison table. The result will include all records from 'a' that do not have a matching ID in 'b'.

To provide a specific example of these operations, please share sample data in your updated question so a customized demonstration can be provided.

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