Question

I have a table that contains the following sample data:-

ID     Description
1      John Doe
2      Jane Doe
3      RETRO John Doe
3      John Doe
4      Jane Doe
4      RETRO Jane Doe
5      Bobby

ID column is not a primary key hence the duplicate ID’s

I want to select all the records from the above table, but where an ID is duplicated i only want to select the record that starts with ‘RETRO’ and ignore the other record.

Answer 1

Try this:

SELECT ID, DESCRIPTION FROM Table 
WHERE Description LIKE 'RETRO %' 
OR ID IN (
   SELECT ID FROM Table GROUP BY ID HAVING COUNT(*) = 1
)