CODEWITHSUNDEEP
phpmysql
user3522371
user3522371

Reputation:

Simultaneous MySQL insertions in the same table: how to?

First of all, my question has nothing to do with this one.

When querying a MySQL database for insertion: suppose several users try to insert rows on the same time on the same database table: does MySQL RDBMS lock the insertion process when one insertion is in progress ? Or does it allow multiple insertions at the same time ?

I ask this question because I am naming images inserted by users using the timestamp. However, timestamp uses seconds. So if 50 users insert images in the same seconds: how MySQL will treat them ? Will I have 50 images with the same name ?

Upvotes: 5

Views: 1923

Answers (1)

Vatev
Vatev

Reputation: 7590

Yes, you will (almost certainly) get multiple images with the same timestamp.

You can use AUTO_INCREMENT, UUID(), or another approach to generate unique values, but timestamps (even microsecond precision ones) are not unique.

Upvotes: 1

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