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mentat/query-projector
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Richard Newman 66e6fef75e Define Store, use TabWriter in the CLI for aligning columnar output. (#540) r=emily 
* Define Store, which is a simple container for a SQLite connection and a Conn.
  This is a breaking change.
* Return the FindSpec as part of QueryOutput, not just results.
* Switch to using stderr in appropriate places in CLI.
* Print columns in CLI output.
2018-02-01 09:29:07 -08:00
..
src Define Store, use TabWriter in the CLI for aligning columnar output. (#540) r=emily 2018-02-01 09:29:07 -08:00
Cargo.toml Update some dependencies. (#492) r=etoop 2017-11-21 16:24:08 +00:00
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.