nushell/crates/nu-command/tests/commands/mod.rs
Dan Davison 7625aed200
SQL-style join command for Nushell tables (#8424)
This PR adds a command `join` for performing SQL-style joins on Nushell
tables:

```
〉join -h
Join two tables

Usage:
  > join {flags} <right-table> <left-on> (right-on)

Flags:
  -h, --help - Display the help message for this command
  -i, --inner - Inner join (default)
  -l, --left - Left-outer join
  -r, --right - Right-outer join
  -o, --outer - Outer join

Signatures:
  <table> | join list<any>, <string>, <string?> -> <table>

Parameters:
  right-table <list<any>>: The right table in the join
  left-on <string>: Name of column in input (left) table to join on
  (optional) right-on <string>: Name of column in right table to join on. Defaults to same column as left table.

Examples:
  Join two tables
  > [{a: 1 b: 2}] | join [{a: 1 c: 3}] a
  ╭───┬───┬───╮
  │ a │ b │ c │
  ├───┼───┼───┤
  │ 1 │ 2 │ 3 │
  ╰───┴───┴───╯
```

<table>
    <tbody>
        <tr>
<td><img width="400" alt="image"
src="https://user-images.githubusercontent.com/52205/224578744-eb9d133e-2510-4a3d-bd0a-d615f07a06b7.png"></td>
        </tr>
    </tbody>
  </table>


# User-Facing Changes

Adds a new command `join`

# Tests + Formatting

```
cargo test -p nu-command commands::join
```

Don't forget to add tests that cover your changes.

- [x] `cargo fmt --all -- --check` to check standard code formatting
(`cargo fmt --all` applies these changes)
- [x] `cargo clippy --workspace -- -D warnings -D clippy::unwrap_used -A
clippy::needless_collect` to check that you're using the standard code
style
- [x] `cargo test --workspace` to check that all tests pass

# After Submitting

- [ ] If your PR had any user-facing changes, update [the
documentation](https://github.com/nushell/nushell.github.io) after the
PR is merged, if necessary. This will help us keep the docs up to date.

---------

Co-authored-by: Reilly Wood <reilly.wood@icloud.com>
2023-03-16 16:57:20 -07:00

113 lines
1.3 KiB
Rust

mod alias;
mod all;
mod any;
mod append;
mod assignment;
mod break_;
mod bytes;
mod cal;
mod cd;
mod compact;
mod continue_;
mod cp;
mod date;
mod def;
mod default;
mod do_;
mod drop;
mod each;
mod echo;
mod empty;
mod enter;
mod error_make;
mod every;
#[cfg(not(windows))]
mod exec;
mod export_def;
mod fill;
mod find;
mod first;
mod flatten;
mod for_;
mod format;
mod g;
mod get;
mod glob;
mod group_by;
mod hash_;
mod headers;
mod help;
mod histogram;
mod insert;
mod into_filesize;
mod into_int;
mod join;
mod last;
mod length;
mod let_;
mod lines;
mod loop_;
mod ls;
mod math;
mod merge;
mod mkdir;
mod move_;
mod mut_;
mod n;
mod network;
mod nu_check;
mod open;
mod p;
mod parse;
mod path;
mod platform;
mod prepend;
mod print;
#[cfg(feature = "sqlite")]
mod query;
mod random;
mod range;
mod redirection;
mod reduce;
mod reject;
mod rename;
mod return_;
mod reverse;
mod rm;
mod roll;
mod rotate;
mod run_external;
mod save;
mod select;
mod semicolon;
mod seq;
mod seq_char;
mod shells;
mod skip;
mod sort;
mod sort_by;
mod source_env;
mod split_by;
mod split_column;
mod split_row;
mod str_;
mod table;
mod take;
mod to_text;
mod touch;
mod transpose;
mod try_;
mod uniq;
mod uniq_by;
mod update;
mod upsert;
mod url;
mod use_;
mod where_;
#[cfg(feature = "which-support")]
mod which;
mod while_;
mod with_env;
mod wrap;
mod zip;