Conteúdo
O Serviço de análise do Couchbase usa o SQL++ query language. SQL++ is an modern query language designed to work with semi-structured data and the JSON data model. SQL++ is backwards-compatible with SQL.
The Coucbase Analytics Service is currently in developer preview. As such, there are occasional breaking changes between releases. This post serves to document those changes.
6.0
Linguagem de definição de dados
- Bucket association is now automatic
Previous versions required explicit association between Analytics buckets and Couchbase Server buckets. For example,
CREATE BUCKET ha WITH {"name":"health"}. Analytics buckets now automatically mirror Server buckets, e.g. in the previous example other Analytics DDL commands can refer to a bucketsaúdewithout any extra configuration. - Dataset definitions no longer require the
SOMBRApalavra-chavePreview releases before version 5.5 required the
SOMBRAkeyword. It is optional in v5.5. It is an error to include it in v6.0. The syntax for creating datasets is thereforeCREATE DATASET ((dataverse_name.)? dataset_name)? ON bucket_name (WHERE where_exp)?. CONNECT/DISCONNECT BUCKEThave been replaced byCONNECT/DISCONNECT LINKThe connect and disconnect commands activate/deactivate dataset processing of data from Server buckets. The new full syntax is
CONNECT LINK (dataverse_name.)? Local (, (dataverse_name.)? Local)*. This will connect all datasets in a dataverse.
Pós-escrito
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