Interesting note on the NOW() (or CURRENT_TIMESTAMP), they are equivalent to transaction_timestamp(), which means - start time of the current transaction. So,

Interesting note on the NOW() (or CURRENT_TIMESTAMP), they are equivalent to transaction_timestamp(), which means - start time of the current transaction. So, if you'd insert multiple items in a single transaction, all of them would end up with the same value in the "created" column.