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201708/20170824_02.md

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@@ -304,7 +304,7 @@ where st_geohash(pos,11) ~ ('^'||st_geohash(st_setsrid(st_makepoint(100,90),4326
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在不太影响导入性能的同时,又能获得不错的空间数据筛选性能。何乐而不为呢?
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最后,我们可能还有时间、空间、对象属性多维度查询的需求,方法请参考:
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最后,我们可能还有时间、空间、对象属性多维度查询的需求(可以使用多级分区表、多字段索引bitmap合并扫描等数据库黑科技),方法请参考:
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[《PostgreSQL\GPDB 毫秒级海量多维数据透视 案例分享》](../201706/20170625_01.md)
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