A cross-product dashboard is a database dashboard that shows the joining of two different SQL database tables. The name comes from the term “cross product” in relational algebra, which is the basis for relati
We’ll use a single grouping expression containing the references to the fields product_name and product_id. (Multiple grouping expressions can be used to do cube aggregations.) 最后的聚合需要两件事,而不是输入。首先是分组。我们将使用一个分组表达式,其中包含对字段product_name和product_id的引用。(...
A cross platform way to express data transformation, relational algebra, standardized record expression and plans. Resources Readme License Apache-2.0 license Activity Stars 0 stars Watchers 0 watching Forks 0 forks Report repository Releases 5 tags Packages No packages published Languages...
Obviously, goal is to allow users to "ask any question, any time, on any size", thereby enabling them to "build their own product on the go". One of the most influential initiatives in EO is EarthServer which has demon- strated new directions for flexible, scalable EO services based ...
In the above script, the two assignments of RS.A and RS.B, respectively originating from R and S work because the table RS has R and S as two upstream tables. The table tile displays the 6=2x3 lines, which result from the Cartesian product between R and S.The...