Hi,
Need help to build needed SQL Query. For one member we have multiple rows. Based on condition, would like to select 1 row per member with Effective date and Termination Date. Calculation to Effective date needed. I can select MAX termination date Group by member will work for me. Thanks in advance.
CREATE TABLE tempMemberUpdt
(
MemberID VARCHAR(10),
ProgramName VARCHAR(10),
EffectiveDt Date,
TerminateDt Date)
-- Result Expected MemberID: M1, GOLD, EffectiveDt: 2/1/2021 and TerminateDt: 12/31/2021 as GOLD membership started from 2/1/2021 and renewed within 15 days gap
INSERT INTO tempMemberUpdt values ('M1','Silver','1/1/2021','1/31/2021')
INSERT INTO tempMemberUpdt values ('M1','GOLD','2/1/2021','3/31/2021')
INSERT INTO tempMemberUpdt values ('M1','GOLD','4/1/2021','4/30/2021')
INSERT INTO tempMemberUpdt values ('M1','GOLD','5/1/2021','12/31/2021')
-- Result Expected MemberID: M2, GOLD, EffectiveDt: 1/1/2021 and TerminateDt: 12/31/2021 as all membership are GOLD and renewed within 15 days gap
INSERT INTO tempMemberUpdt values ('M2','GOLD','1/1/2021','1/31/2021')
INSERT INTO tempMemberUpdt values ('M2','GOLD','2/1/2021','3/31/2021')
INSERT INTO tempMemberUpdt values ('M2','GOLD','4/1/2021','4/30/2021')
INSERT INTO tempMemberUpdt values ('M2','GOLD','5/1/2021','12/31/2021')
-- Result Expected MemberID: M3, Silver, EffectiveDt: 5/1/2021 and TerminateDt: 12/31/2021 as member Switch to Silver membership from 5/1/2021
INSERT INTO tempMemberUpdt values ('M3','Silver','1/1/2021','1/31/2021')
INSERT INTO tempMemberUpdt values ('M3','Silver','2/1/2021','3/31/2021')
INSERT INTO tempMemberUpdt values ('M3','GOLD','4/15/2021','4/30/2021')
INSERT INTO tempMemberUpdt values ('M3','Silver','5/1/2021','12/31/2021')
-- Result Expected MemberID: M4, GOLD, EffectiveDt: 2/10/2021 and TerminateDt: 12/31/2021 as GOLD membership started from 2/10/2021 (membership renewal gap 15 days allowed)
INSERT INTO tempMemberUpdt values ('M4','Silver','1/1/2021','1/31/2021')
INSERT INTO tempMemberUpdt values ('M4','GOLD','2/10/2021','3/31/2021')
INSERT INTO tempMemberUpdt values ('M4','GOLD','4/12/2021','4/30/2021')
INSERT INTO tempMemberUpdt values ('M4','GOLD','5/10/2021','12/31/2021')
-- Result Expected MemberID: M5, GOLD, EffectiveDt: 5/10/2021 and TerminateDt: 12/31/2021 as GOLD membership started from 5/10/2021 (renewal gap is more than allowed 15 days)
INSERT INTO tempMemberUpdt values ('M5','Silver','1/1/2021','1/31/2021')
INSERT INTO tempMemberUpdt values ('M5','GOLD','3/10/2021','3/31/2021')
INSERT INTO tempMemberUpdt values ('M5','GOLD','5/10/2021','12/31/2021')