yuqiyang - 博客园

2015年5月28日

摘要： REDUCEThe REDUCE statement is very powerful and is the only way to guarantee that Scope will pass all Row objects sharing a key to a processing object... 阅读全文

posted @ 2015-05-28 16:04 yuqiyang 阅读(524) 评论(0) 推荐(0)

Scope Instruction - Processor

摘要： PROCESSThe PROCESS statementis used to convert one RowSet to another RowSet. Uses include:TransformationsAdding/Removing columnsFiltering dataExpandin... 阅读全文

posted @ 2015-05-28 16:00 yuqiyang 阅读(333) 评论(0) 推荐(0)

Scope Instruction - Extractor

摘要： EXTRACTThe EXTRACT statement is used to convert raw Cosmos streams to Row objects using an Extractor. All Scope scripts muststart with an EXTRACT stat... 阅读全文

posted @ 2015-05-28 15:57 yuqiyang 阅读(508) 评论(0) 推荐(0)

Cosmos Fundamentals

摘要： TerminologyVirtual Cluster (VC) : A virtual directory that users manage and use to interact with Cosmos.SCOPE : Cosmos' custom language for processi... 阅读全文

posted @ 2015-05-28 15:50 yuqiyang 阅读(864) 评论(0) 推荐(0)