Data Models

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Defining Data Models

In Wvlet, you can define reusable data models, which wraps an Wvlet query with model (model name) = ... end block:

model my_model =
  -- Write your query here
  from ...
  ... 
end

Models can be used in other queries in the same manner with scanning a table:

from my_model
limit 10

Data models are often the units to materialize query results into the target database tables. If your data model needs to be accessed by multiple queries, materializing (or persisting) data models will reduce the cost of data processing and often accelerates the query processing.