Description: The fetch interval refers to the time or number of rows processed between retrieval operations in an SQL query. This concept is crucial in query optimization, as an appropriate fetch interval can significantly enhance database performance. In simple terms, it is the amount of data retrieved and processed before a new retrieval operation is performed. A short fetch interval may indicate that the query is performing too many retrieval operations, which can lead to poor performance. Conversely, a longer fetch interval may indicate more efficient processing, where retrieval operations are grouped to minimize wait time and maximize resource utilization. Proper management of the fetch interval is essential to ensure that SQL queries execute efficiently, especially in large and complex databases where response time and server load are critical factors. In summary, the fetch interval is a fundamental aspect of SQL query optimization, as it directly influences the efficiency and performance of database operations.
