HI all, I have been trying to figuare out a way to fix a problem that i have been having in my perl code. The issue is that i have to make a call to the table and check for the existance of overlapping dates before i insert a row in my table.

I know some people will suggest "Date::Calc" etc but i wanted to somehow just do this check in my sql call and save time (instead of reading each row and running a date::calc on it). how can i do this? is there a simpler way to do a range check? (maybe with SQL and/or/between? I think between wont work because i have to check 2 dates against 2 params in my program? i donno?)

I want to check that there is no overlapping row in the table where the effective date & expiration date overlap. think of this like a scheduling system where i cant book an appointment over another. here is what my table look like: 

Table: Company_relationship

company_number
relationship_type
effective_date
expiration_date

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In reply to Overlapping dates Issue by data67

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