agentm/project-m36

Implement "WITH" relvar macro

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#57 opened on Nov 28, 2016

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help wanted

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Description

The TutorialD WITH macro allows the user to create a handy relvar macro useable for the duration of a single expression.

WITH (ct:=s{city,status}) : <relational expression>

The implementation of this feature may hint that we need to finally separate the AST from the execution ADT.

Contributor guide

Research direction
Study the current AST and execution ADT separation in the codebase, then implement the WITH macro according to TutorialD syntax.
Tech stack
haskell
Domain
backenddatabase
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
Haskell
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60