MySQL Inserts: Single vs. Multi-Row: Which is Faster?

Multi-Row Inserts: Unleashing Speed and Efficiency

When optimizing data insertion processes in MySQL, a crucial question arises: should multiple single INSERTs be used or a single multiple-row INSERT?

The Iron Rule: Multi-Row INSERTs Reign Supreme

According to MySQL documentation, multi-row INSERTs significantly outperform multiple single INSERTs for a compelling reason. Each individual INSERT operation incurs an overhead comprising connection establishment, query transmission, parsing, and other associated tasks. By combining multiple rows into a single INSERT, this overhead is incurred only once, leading to substantial time savings.

Quantifying the Gains

The breakdown of time required for row insertion reveals that approximately 85% of the process involves connection, query sending, parsing, and closing operations. These overhead expenses are incurred for every single INSERT statement.

In contrast, inserting a single row occupies only 15% of the time, while inserting indexes takes up an additional 15%. With a multi-row INSERT, this 85% overhead is borne only once, translating into a notable performance improvement

Empirical Evidence from the Documentation

The MySQL documentation corroborates this finding, stating that utilizing multi-row INSERTs with multiple VALUES lists significantly enhances speed, often resulting in order-of-magnitude improvements compared to employing single-row INSERTs.

Conclusion

Based on the evidence presented, the choice is clear: multi-row INSERTs offer a superior solution for optimizing data insertion operations in MySQL. Leveraging this technique can dramatically enhance performance, ensuring that data is efficiently stored and retrieved in your MySQL system.

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