Overlapping Dates in MySQL: Inserting with Conflict Detection
Problem:
Consider a database table with columns start_date and end_date representing availability for a specific acc_id. The goal is to prevent users from creating new availability ranges that overlap with existing ones.
Question:
Is it possible to perform this validation within a single MySQL insert statement?
Answer:
Unfortunately, using only plain MySQL, it's not feasible to ensure non-overlapping dates in a single insert statement. This is because MySQL lacks support for CHECK constraints, which would allow the validation to be enforced by the database engine itself.
Options:
Alternative Database Options:
If you can consider a different database engine, PostgreSQL offers support for CHECK constraints, making the desired validation straightforward.
Note:
Even if you decide to use an alternative database or implement the validation in the application logic, it's always recommended to check the number of rows affected after the insert operation. This can help detect potential failures that may not be related to date overlaps.
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