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Well, MongoDB was designed and created as a document database first and foremost, not an SQL one (NoSQL). It is focused and optimized for this particular use case and a way of storing and accessing data. PostgreSQL on the other hand, is a relational, SQL database that later on added support for composite column types like JSON/JSONB, ARRAY and others. Over the years, it has extended and optimized storing JSON documents in its own binary JSONB format, as well as added more ways to index, query and modify data of this type.
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正所谓“春江水暖鸭先知”,在春晚变成“机器人开会”前,资本市场就率先“预判”了机器人赛道的持续爆火。
The fall in oil prices has given traders a moment to "exhale", but energy markets remain in a state of "total tug-of-war", said Alberto Bellorin, founder and managing director oil and gas investment firm InterCapital Energy.
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Parsing follows the structure:
为抢占市场份额,公司推出低价机型、推进全价格段布局,以价换量拉动销量增长;同时大幅加码营销投放,拓展全球线下渠道。。关于这个话题,新收录的资料提供了深入分析