[轉載]當function應用在索引列時使用索引
Everyone who has worked with Oracle knows that the optimizer will not use an index if a function is applied to the indexed column.http://awads.net/wp/2005/11/29/oracle-sql-tip/
posted on 2005-11-30 11:47 waterye 閱讀(425) 評論(0) 編輯 收藏 所屬分類: oracle