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https://github.com/dracarys18/sqlite
SQLite wrttien for Codecrafter challenge
https://github.com/dracarys18/sqlite
Last synced: about 1 month ago
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SQLite wrttien for Codecrafter challenge
- Host: GitHub
- URL: https://github.com/dracarys18/sqlite
- Owner: dracarys18
- Created: 2024-08-29T04:38:19.000Z (5 months ago)
- Default Branch: main
- Last Pushed: 2024-08-29T04:39:25.000Z (5 months ago)
- Last Synced: 2024-11-26T17:13:08.054Z (about 2 months ago)
- Language: Go
- Size: 3.91 KB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
[](https://app.codecrafters.io/users/codecrafters-bot?r=2qF)
This is a starting point for Go solutions to the
["Build Your Own SQLite" Challenge](https://codecrafters.io/challenges/sqlite).
In this challenge, you'll build a barebones SQLite implementation that supports
basic SQL queries like `SELECT`. Along the way we'll learn about
[SQLite's file format](https://www.sqlite.org/fileformat.html), how indexed data
is
[stored in B-trees](https://jvns.ca/blog/2014/10/02/how-does-sqlite-work-part-2-btrees/)
and more.
**Note**: If you're viewing this repo on GitHub, head over to
[codecrafters.io](https://codecrafters.io) to try the challenge.
# Passing the first stage
The entry point for your SQLite implementation is in `app/main.go`. Study and
uncomment the relevant code, and push your changes to pass the first stage:
```sh
git add .
git commit -m "pass 1st stage" # any msg
git push origin master
```
Time to move on to the next stage!
# Stage 2 & beyond
Note: This section is for stages 2 and beyond.
1. Ensure you have `go (1.16+)` installed locally
1. Run `./your_program.sh` to run your program, which is implemented in
`app/main.go`.
1. Commit your changes and run `git push origin master` to submit your solution
to CodeCrafters. Test output will be streamed to your terminal.
# Sample Databases
To make it easy to test queries locally, we've added a sample database in the
root of this repository: `sample.db`.
This contains two tables: `apples` & `oranges`. You can use this to test your
implementation for the first 6 stages.
You can explore this database by running queries against it like this:
```sh
$ sqlite3 sample.db "select id, name from apples"
1|Granny Smith
2|Fuji
3|Honeycrisp
4|Golden Delicious
```
There are two other databases that you can use:
1. `superheroes.db`:
- This is a small version of the test database used in the table-scan stage.
- It contains one table: `superheroes`.
- It is ~1MB in size.
1. `companies.db`:
- This is a small version of the test database used in the index-scan stage.
- It contains one table: `companies`, and one index: `idx_companies_country`
- It is ~7MB in size.
These aren't included in the repository because they're large in size. You can
download them by running this script:
```sh
./download_sample_databases.sh
```
If the script doesn't work for some reason, you can download the databases
directly from
[codecrafters-io/sample-sqlite-databases](https://github.com/codecrafters-io/sample-sqlite-databases).