आप जोड़ सकते हैं NOT EXISTS आपकी क्वेरी के लिए:
SELECT t1.*
FROM user_status t1
WHERE t1.date_assigned = (SELECT MIN(t2.date_assigned) -- the first occurance
FROM user_status t2
WHERE t2.user_id = t1.user_id -- for this user
AND t2.status_id <> 1 -- where status not active
AND t2.date_assigned BETWEEN -- within 1 yr of given date
'2015-05-01' + INTERVAL 1 DAY -- (not including that date)
AND
'2015-05-01' + INTERVAL 1 YEAR
)
AND NOT EXISTS (SELECT 1 -- such a record should not exist
FROM user_status t3
WHERE t3.user_id = t1.user_id -- for this user
AND t3.status_id <> 1 -- where status is not active
AND t3.date_assigned < -- before the examined period
'2015-05-01' + INTERVAL 1 DAY )
संपादित करें:
आप निम्न क्वेरी का उपयोग कर सकते हैं जो कई सक्रियण तिथियों के मामले पर भी विचार करती है:
SELECT *
FROM user_status
WHERE (user_id, date_assigned) IN (
-- get last de-activation date
SELECT t1.user_id, MAX(t1.date_assigned)
FROM user_status AS t1
JOIN (
-- get last activation date
SELECT user_id, MAX(date_assigned) AS activation_date
FROM user_status
WHERE status_id = 1
GROUP BY user_id
) AS t2 ON t1.user_id = t2.user_id AND t1.date_assigned > t2.activation_date
GROUP BY user_id
HAVING MAX(date_assigned) BETWEEN '2015-05-01' + INTERVAL 1 DAY AND '2015-05-01' + INTERVAL 1 YEAR AND
MIN(date_assigned) > '2015-05-01' + INTERVAL 1 DAY)
