Since there are four order IDs, the job performs four database queries.

由于有四个订单id，因此作业执行了四次数据库查询。

youdao

The database queries in TPC-H are more complex than typical OLTP queries.

TPC - H中的数据库查询要比典型的OLTP查询更加复杂。

youdao

This is a very useful way to represent the results of the database queries.

因此可以以方便的方式表示数据库查询的结果。

youdao

MapReduce is becoming the lingua franca of data scientists, just as SQL has emerged as a standard for database queries, Argyros says.

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As part of his PhD thesis, Chris Stolte, his student at Stanford, invented the Polaris technology, now called VizQL, which allows database queries to be generated and represented visually.

FORBES: Tableau Software's Pat Hanrahan on "What Is a Data Scientist?"

The Cascalog system has combined the Cascading system for abstraction of advanced data processing on Hadoop and other systems, the Datalog declarative programming language that is well suited for expressing database queries in an abstract form, and the Clojure language to create a declarative language for queries that can be run on Apache Hadoop.

FORBES: Why Adopting the Declarative Programming Practices Will Improve Your Return from Technology