《Pro Oracle SQL》CHAPTER2--2.12Executing the Plan and Fetching Rows
ExecutingthePlanandFetchingRows 执行计划和取出行 (page78) Aftertheoptimizerdeterminestheplanandstoresitinthelibrarycacheforlaterreuse,thenextstepistoactuallyexecutetheplanandfetchtherowsofdatathatsatisfyyo