query optimization

• 查询优化

query optimization的用法和样例：

例句

1. This makes sure that the plan guide is used by the query optimizer.
   这将确保计划指南可由查询优化器使用。
2. Accurate index information and statistics are fundamental to cost-based decisions in the query optimizer.
   准确的索引信息和统计信息是查询优化器中基于成本的决策的基础。