https://github.com/hoelzro/sqlite-lua-extension

A SQLite extension that embeds a Lua interpreter into SQLite
https://github.com/hoelzro/sqlite-lua-extension

lua sqlite

Last synced: 2 months ago
JSON representation

A SQLite extension that embeds a Lua interpreter into SQLite

• Host: GitHub
• URL: https://github.com/hoelzro/sqlite-lua-extension
• Owner: hoelzro
• License: mit
• Created: 2012-09-25T16:06:25.000Z (over 12 years ago)
• Default Branch: master
• Last Pushed: 2020-06-20T18:28:47.000Z (over 4 years ago)
• Last Synced: 2024-10-04T13:26:08.759Z (3 months ago)
• Topics: lua, sqlite
• Language: C
• Size: 4.88 KB
• Stars: 19
• Watchers: 5
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: COPYING

Awesome Lists containing this project

• AwesomeInterpreter - sqlite-lua-extension
• awesome-sqlite - github.com/hoelzro/sqlite-lua-extension - Embed a Lua interpreter into SQLite (Extensions)

README

        
# SQLite-Lua - Lua extension for SQLite

This SQLite extension embeds a Lua interpeter into SQLite, so you can execute Lua code in your

SQL statements.

# Examples

## Executing Lua code

```sql

  select lua('print "hi"');

```

## Getting data from Lua

```sql

  select lua('return math.random(1, 10)');

```

Since the 'return' is annoying to type and is easy to forget,

the extension automatically prepends a 'return' if it doesn't result in a syntax

error:

```sql

  select lua('math.random(1, 10)') -- same as above

```

Returning values of a type that doesn't have a sensible equivalent in SQLite (tables, functions,

userdata, and coroutines) causes an error.

Returned booleans are converted into integers.

## Passing data to Lua

Values passed after the Lua statement are passed into the Lua chunk via a table named arg:

```sql

  select lua('arg[1] ** 2', value) from values; -- squares values

```

I may introduce a "nicer" syntax for this in the future.