| const e=JSON.parse('{"key":"v-50952a6e","path":"/zh/UserGuide/V1.2.x/Operators-Functions/Aggregation.html","title":"","lang":"zh-CN","frontmatter":{"description":"聚合函数 聚合函数是多对一函数。它们对一组值进行聚合计算，得到单个聚合结果。 除了 COUNT(), COUNT_IF()之外，其他所有聚合函数都忽略空值，并在没有输入行或所有值为空时返回空值。 例如，SUM() 返回 null 而不是零，而 AVG() 在计数中不包括 null 值。 IoTDB 支持的聚合函数如下： 函数名 功能描述 允许的输入类型...","head":[["link",{"rel":"alternate","hreflang":"en-us","href":"https://iotdb.apache.org/UserGuide/V1.2.x/Operators-Functions/Aggregation.html"}],["meta",{"property":"og:url","content":"https://iotdb.apache.org/zh/UserGuide/V1.2.x/Operators-Functions/Aggregation.html"}],["meta",{"property":"og:site_name","content":"IoTDB Website"}],["meta",{"property":"og:description","content":"聚合函数 聚合函数是多对一函数。它们对一组值进行聚合计算，得到单个聚合结果。 除了 COUNT(), COUNT_IF()之外，其他所有聚合函数都忽略空值，并在没有输入行或所有值为空时返回空值。 例如，SUM() 返回 null 而不是零，而 AVG() 在计数中不包括 null 值。 IoTDB 支持的聚合函数如下： 函数名 功能描述 允许的输入类型..."}],["meta",{"property":"og:type","content":"article"}],["meta",{"property":"og:locale","content":"zh-CN"}],["meta",{"property":"og:locale:alternate","content":"en-US"}],["script",{"type":"application/ld+json"},"{\\"@context\\":\\"https://schema.org\\",\\"@type\\":\\"Article\\",\\"headline\\":\\"\\",\\"image\\":[\\"\\"],\\"dateModified\\":null,\\"author\\":[]}"]]},"headers":[{"level":2,"title":"聚合函数","slug":"聚合函数","link":"#聚合函数","children":[{"level":3,"title":"COUNT_IF","slug":"count-if","link":"#count-if","children":[]}]},{"level":2,"title":"TIME_DURATION","slug":"time-duration","link":"#time-duration","children":[{"level":3,"title":"语法","slug":"语法-1","link":"#语法-1","children":[]},{"level":3,"title":"使用示例","slug":"使用示例-1","link":"#使用示例-1","children":[]}]}],"git":{"createdTime":null,"updatedTime":null,"contributors":[]},"readingTime":{"minutes":3.79,"words":1136},"filePathRelative":"zh/UserGuide/V1.2.x/Operators-Functions/Aggregation.md","autoDesc":true}');export{e as data}; |