Determining Overlapping Date Ranges in MySQL
To ascertain conflicting date ranges within a given table, consider a tailored query that employs the following criteria:
WHERE new_start < existing_end AND new_end > existing_start
where:
This query effectively identifies date ranges that intersect with the proposed new session, providing a more refined result compared to the original query.
Here's an updated version of the query:
SELECT * FROM session WHERE "2010-01-05" < end_date AND "2010-01-25" > start_date;
This query returns only conflicting sessions, omitting non-overlapping ones:
+----+------------+------------+ | id | start_date | end_date | +----+------------+------------+ | 2 | 2010-01-20 | 2010-01-30 | +----+------------+------------+
The revised query ensures that only overlapping sessions are identified, providing a more precise result for conflict detection.
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