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mentat/query-projector
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Greg Burd fa3091d078 Update indexmap dependency.
2020-01-16 13:30:29 -05:00
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src Update to 2018 edition of Rust (1.42). Fix and format code. Update dependencies. Fix tests. 2020-01-16 10:58:21 -05:00
tests Update to 2018 edition of Rust (1.42). Fix and format code. Update dependencies. Fix tests. 2020-01-16 10:58:21 -05:00
Cargo.toml Update indexmap dependency. 2020-01-16 13:30:29 -05:00
README.md Implement projection and querying. (#353) r=nalexander 2017-03-06 14:40:10 -08:00

README.md

This module handles the derivation from an algebrized query of two things:

  • A SQL projection: a mapping from columns mentioned in the body of the query to columns in the output.
  • A Datalog projection: a function that consumes rows of the appropriate shape (as defined by the SQL projection) to yield one of the four kinds of Datalog query result.

These two must naturally coordinate, and so they are both produced here.