I think you need to provide some more complete example of actual match and not match. I can't tell within 2 minutes of what from your description. You have starttime and endtime on boths sides. Is it supposed to be within 2 minutes of either start or end from A or only within 2 minutes after start or 2 minutes before end or is it okay to be more than 2 minutes from either if the interval between start and end exceeds 4 minutes.
First thing: Are your datetime values actual SAS datetime valued or are they character values that just look like datetime?
I think you may want to change this:
from log_tbl as A to from (select * from log_tbl where action = 'Xy') as a
to get the Xy records and similarly
log_tbl as B
would be (select * from log_tbl where action='Gh') as b
You might try, for better reading:
Instead of: and a.start_dttm<b.start_dttm and a.end_dttm>b.start_dttm
try
and b.start_dttm between a.start_dttm and a.end_dttm
I think you need to provide some more complete example of actual match and not match. I can't tell within 2 minutes of what from your description. You have starttime and endtime on boths sides. Is it supposed to be within 2 minutes of either start or end from A or only within 2 minutes after start or 2 minutes before end or is it okay to be more than 2 minutes from either if the interval between start and end exceeds 4 minutes.
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