How do you get the correct data sequence?

To retrieve data in the correct sequence, use an ORDER BY clause on a column that defines the order, such as a timestamp, ID, or sequence number. In SQL: SELECT * FROM table ORDER BY created_at ASC. If the data is partitioned, you can use window functions like ROW_NUMBER() OVER (PARTITION BY key ORDER BY timestamp) to generate a sequence. Ensure the column used for ordering is indexed for performance. For streaming data, maintain a monotonically increasing key or use event time to guarantee order.