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askgit

askgit is a command-line tool for running SQL queries on git repositories. It's meant for ad-hoc querying of git repositories on disk through a common interface (SQL), as an alternative to patching together various shell commands. It can execute queries that look like:

-- how many commits have been authored by user@email.com?
SELECT count(*) FROM commits WHERE author_email = 'user@email.com'

More in-depth examples and documentation can be found below.

Installation

More Installation Instructions Coming Soon

go get -v -tags=sqlite_vtable github.com/augmentable-dev/askgit

Will use the go tool chain to install a binary to $GOBIN.

GOBIN=$(pwd) go get -v -tags=sqlite_vtable github.com/augmentable-dev/askgit

Will produce a binary in your current directory.

Using Docker

Build an image locally using docker

docker build -t askgit:latest .

Or use an official image from docker hub

docker pull augmentable/askgit:latest

Running commands

askgit operates on a git repository. This repository needs to be attached as a volume. This example uses the (bash) built-in command pwd for the current working directory

[pwd] Print the absolute pathname of the current working directory.

docker run -v `pwd`:/repo:ro askgit "SELECT * FROM commits"

Running commands from STDIN

For piping commands via STDIN, the docker command needs to be told to run non-interactively, as well as attaching the repository at /repo.

cat query.sql | docker run -i -v `pwd`:/repo:ro askgit

Usage

askgit -h

Will output the most up to date usage instructions for your version of the CLI. Typically the first argument is a SQL query string:

askgit "SELECT * FROM commits"

Your current working directory will be used as the path to the git repository to query by default. Use the --repo flag to specify an alternate path, or even a remote repository reference (http(s) or ssh). askgit will clone the remote repository to a temporary directory before executing a query.

You can also pass a query in via stdin:

cat query.sql | askgit

By default, output will be an ASCII table. Use --format json or --format csv for alternatives. See -h for all the options.

Tables

commits

Similar to git log, the commits table includes all commits in the history of the currently checked out commit.

Column Type
id TEXT
message TEXT
summary TEXT
author_name TEXT
author_email TEXT
author_when DATETIME
committer_name TEXT
committer_email TEXT
committer_when DATETIME
parent_id TEXT
parent_count INT
tree_id TEXT
additions INT
deletions INT

files

The files table iterates over ALL the files in a commit history, by default from what's checked out in the repository. The full table is every file in every tree of a commit history. Use the commit_id column to filter for files that belong to the work tree of a specific commit.

Column Type
commit_id TEXT
tree_id TEXT
file_id TEXT
name TEXT
mode TEXT
type TEXT
contents TEXT

refs

Column Type
name TEXT
type TEXT
hash TEXT

Example Queries

This will return all commits in the history of the currently checked out branch/commit of the repo.

SELECT * FROM commits

Return the (de-duplicated) email addresses of commit authors:

SELECT DISTINCT author_email FROM commits

Return the commit counts of every author (by email):

SELECT author_email, count(*) FROM commits GROUP BY author_email ORDER BY count(*) DESC

Same as above, but excluding merge commits:

SELECT author_email, count(*) FROM commits WHERE parent_count < 2 GROUP BY author_email ORDER BY count(*) DESC

This is an expensive query. It will iterate over every file in every tree of every commit in the current history:

SELECT * FROM files

Outputs the set of files in the tree of a certain commit:

SELECT * FROM files WHERE commit_id='some_commit_id'

Same as above if you just have the commit short id:

SELECT * FROM files WHERE commit_id LIKE 'shortened_commit_id%'

Returns author emails with lines added/removed, ordered by total number of commits in the history:

SELECT count(*) AS commits, SUM(additions) AS additions, SUM(deletions) AS  deletions, author_email FROM commits GROUP BY author_email ORDER BY commits

Returns commit counts by author, broken out by day of the week:

SELECT
    count(*) AS commits,
    count(CASE WHEN strftime('%w',author_when)='0' THEN 1 END) AS sunday,
    count(CASE WHEN strftime('%w',author_when)='1' THEN 1 END) AS monday,
    count(CASE WHEN strftime('%w',author_when)='2' THEN 1 END) AS tuesday,
    count(CASE WHEN strftime('%w',author_when)='3' THEN 1 END) AS wednesday,
    count(CASE WHEN strftime('%w',author_when)='4' THEN 1 END) AS thursday,
    count(CASE WHEN strftime('%w',author_when)='5' THEN 1 END) AS friday,
    count(CASE WHEN strftime('%w',author_when)='6' THEN 1 END) AS saturday,
    author_email
FROM commits GROUP BY author_email ORDER BY commits

About

Query git repositories with SQL. Generate reports, perform status checks, analyze codebases. πŸ” πŸ“Š

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