如何减少查询执行时间MySql

Question

这是我的Mysql数据库视图。

 Create View viewschools As Select
  school.*,
  conference.conference_name,
  conference.division_id,
  division.division_level,
  facility.facility_address,
  GROUP_CONCAT(DISTINCT facility.facility_name) AS Athletic_Venue
FROM school
  INNER JOIN conference
    ON school.conference_id = conference.conference_id
  INNER JOIN division
    ON conference.division_id = division.division_id
  LEFT OUTER JOIN schoolfacilitysport
    ON school.school_id = schoolfacilitysport.school_id
  LEFT OUTER JOIN facilitytosports
    ON schoolfacilitysport.facilitytosports_id = facilitytosports.facilitytosports_id
  LEFT OUTER JOIN facility
    ON facilitytosports.facility_id = facility.facility_id
    group by school.school_id

在数据库表中20万条记录现在查询执行时间是13秒然后我在数据库中打开这个视图。使用like运算符搜索任何学校名称时查询执行时间增加。请建议任何减少查询执行时间的事情。

Answer 1

首先在conference_id，division_id，school_id，facilitytosports_id，facility_id上创建索引（如果还没有）。
见create index

Answer 2

使用mysql索引。 以下链接可能有帮助。 http://dev.mysql.com/doc/refman/5.0/en/mysql-indexes.html