查询处理器

• These improvements can be divided into general feature categories : synchronization , the storage engine , and the query processor
  这些改进可划分为以下常规功能类别：同步存储引擎和查询处理器。
• The sql server mobile query processor parses , compiles , optimizes and executes sql expressions , queries , and commands
  Sql server mobile查询处理器可以分析、编译、优化和执行sql表达式、查询及命令。
• The ole db rowsets are inserted into the target table by the query processor , which plans and optimizes each operation
  然后，查询处理器将oledb行集插入到表中，查询处理器规划并优化每个大容量导入操作。
• The sql server mobile query processor automatically creates statistical information about the distribution of values in an index
  Sql server mobile查询处理器会自动创建关于一个索引中的值分布情况的统计信息。
• For dbcc checkdb , the query processor reevaluates and automatically adjusts parallelism with each table or batch of tables checked
  对于dbcc checkdb ，查询处理器重新求值，并对检查的每个表或每批表自动调整并行度。
• The query processor takes advantage of statistics support in the storage engine to create significantly better cost - based query plans
  利用存储引擎中的统计支持，查询处理器创建的查询计划得到了显著改善并节省了开销。
• Its characteristic features are a robust data store , an optimizing query processor , and reliable , scalable connectivity capabilities
  其特有的功能包括强大的数据存储功能、优化的查询处理器，以及可靠、可扩展的连接功能。
• When implemented , database engine tuning advisor recommendations enable the query processor to perform workload tasks in the shortest amount of time
  实现这些结构之后，数据库引擎优化顾问使查询处理器能够用最短的时间执行工作负荷任务。
• The query processor determines what types of locks are required to protect each resource based on the type of access and the transaction isolation level setting
  查询处理器根据访问类型和事务隔离级别设置来确定保护每一资源所需的锁的类型。
• When an instance of the database engine processes a transact - sql statement , the database engine query processor determines which resources are to be accessed
  当数据库引擎实例处理transact - sql语句时，数据库引擎查询处理器会决定将要访问哪些资源。