时间段交集查询

<choose>
  <when test="strategyBeginTime != null and strategyEndTime==null">
    and s.begin_time>= #{strategyBeginTime,jdbcType=TIMESTAMP}
  </when>
  <when test="strategyEndTime != null and strategyBeginTime == null">
    and s.end_time &lt;= #{strategyEndTime,jdbcType=TIMESTAMP}
  </when>
  <when test="strategyEndTime != null and strategyBeginTime != null">
    and ((s.begin_time &lt;=#{strategyBeginTime} and s.end_time >=#{strategyBeginTime}) or (s.begin_time >=#{strategyBeginTime} and s.begin_time&lt;=#{strategyEndTime}))
  </when>
</choose>