Why Am I Not Finding Records Older Than 15 Minutes with My SQL Query?

Selecting Records with Timestamps Older Than a Specified Time

In the realm of database querying, determining the age of timestamps can be crucial. A recent query sought to find all records with timestamps older than 15 minutes, using the query:

WHERE creation_date >= DATE_SUB(NOW(), INTERVAL 15 MINUTE)

However, despite having records older than 15 minutes in the database, the query consistently returned no results. This prompted further investigation into the correct syntax.

The issue stemmed from the comparison operator used. The original query used "=>", which checks for timestamps greater than or equal to the specified interval. However, selecting records older than a specified time requires the use of "<", as in:

WHERE creation_date < DATE_SUB(NOW(), INTERVAL 15 MINUTE)

By using this modified syntax, the query will correctly identify timestamps that are older than the specified time interval, ensuring accurate retrieval of the desired data.

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