condition a) All clients who have had at least 2 appointments in the last 24 months condition b) but have NO appointments in the last 6 months
I am able to get the clients with >= 2 appointments with this query
SELECT c.client_id, concat(c.first_name, ' ', c.last_name) AS client_name, c.`address`, c.city, c.state, c.`zip`, c.email , max(from_unixtime(a.time_start)) AS last_appt, count(a.client_id) AS appt_count
FROM tl_clients c LEFT JOIN tl_appt a ON c.client_id = a.client_id GROUP BY a.client_id HAVING max(a.time_start) >= UNIX_TIMESTAMP(DATE_SUB( NOW(), INTERVAL 24 MONTH)) AND last_appt IS NOT NULL AND count(a.client_id) >= 2;
BUT, how do I add the other “condition b” to the query to get an accurate end result.
I’d appreciate any help.
Don Wieland D W D a t a C o n c e p t s ~~~~~~~~~~~~~~~~~~~~~~~~~ firstname.lastname@example.org http://www.dwdataconcepts.com Direct Line - (949) 336-4828 SKYPE - skypename = dwdata
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Don Wieland Narrow A First Set Of Records
Dec 17, 2015; 07:14
Narrow A First Set Of Records
Roy Lyseng Re: Narrow A First Set Of Records
Dec 17, 2015; 18:11
Re: Narrow A First Set Of Records
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