डुप्लिकेट प्रविष्टि के मामले में विशिष्ट प्रविष्टि प्राप्त करें

अद्यतन समाधान:

SELECT UserId, First name, Last name, IsRequired, IsDeleted FROM table WHERE UserId IN (SELECT UserId FROM users GROUP BY UserId HAVING count(distinct(IsRequired)) > 1) and IsRequired = 'true'
UNION
SELECT UserId, First name, Last name, IsRequired, IsDeleted FROM table WHERE UserId IN (SELECT UserId FROM users GROUP BY UserId HAVING count(IsRequired) = 1)

कृपया देखें http://sqlfiddle.com/#!3/d178f/1/0

ठीक उसी डेटाबेस संरचना को पुन:प्रस्तुत किया है।