sql server 范围时间查询

SQL Server时间范围查询技巧

最新推荐文章于 2025-09-05 16:07:32 发布

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本文探讨了如何在SQL Server中高效地进行时间范围查询，适用于处理大量历史数据的场景。通过实例解析，展示了利用索引优化查询性能的方法，帮助Java开发者更好地理解和应用SQL Server的时间查询操作。

  <select id="getFpw" resultType="java.util.Map">
      SELECT  ISNULL(num,0)as num  ,rTime FROM fpw WHERE rTime BETWEEN  CONVERT(varchar(100), #{startDay}, 20) and CONVERT(varchar(100),   #{endDay}, 20) and rFirm = #{firm} and rBumen =#{bumen} AND rZu = #{zu}
    </select>

    <select id="getFpwMonth" resultType="integer">
       SELECT  ISNULL(cast(SUM(num) as varchar),0)  FROM fpw WHERE datediff(month,[rTime],#{Date})=0 and rFirm = #{firm} and rBumen =#{bumen} AND rZu = #{zu}
    </select>

    <select id="getFpwYear" resultType="integer">
       SELECT  ISNULL(cast(SUM(num) as varchar),0)  FROM fpw WHERE datediff(year,[rTime],#{Date})=0 and rFirm = #{firm} and rBumen =#{bumen} AND rZu = #{zu}
    </select>