sqlite-json-export

sqlite-json-export

Convert Sqlite3 tables to JSON

Install

npm install --save sqlite-json-export

Todo:

• Migrate to a Promise based API
• Extract all tables

API

constructor(database)

Create an instance of sqlite-json.

Example:

const SqliteJsonExport = require('sqlite-json-export');
let exporter = new SqliteJsonExport('example.db');

database

The path to an SQLite database or a sqlite3 client instance.

Type: sqlite3.Database or string

Example:

const SqliteJsonExport = require('sqlite-json-export');
const sqlite3 = require('sqlite3');
const db = new sqlite3.Database('./mydb.sqlite3');
const exporter = new SqliteJsonExport('example.db');

json(sql, options, callback)

Export JSON from a specified table, and use it in the given callback.

Example:

exporter.json('select * FROM myTable', (err, json) => {
  // handle error or do something with the JSON
  // "[{"foo": 1}, {"foo": 2}, {"foo": 3}]"
});

options.columns

An optional list of columns to output.

Type: Array

Example:

exporter.json({table: 'myTable' columns: ['foo']}, (err, json) => {
  // "[{"foo": 1}, {"foo": 2}, {"foo": 3}]"
});

options.key

An optional column name.

By default, the result is an JSON array of objects. If key is given, a JSON object is returned, each row keyed to the given column value.

Type: string

Example:

exporter.json('myTable', {key: 'foo'}, (err, json) => {
  // "{"1": {"foo": 1}, "2": {"foo": 2}, "3": {"foo": 3}}"
});

options.table

A table to address with the columns, and where options.

Type: string

options.where

A where clause to add to the query.

Type: string

Example:

exporter.json({table: 'myTable', where: 'foo > 1'}, (err, json) => {
  // "[{"foo": 2}, {"foo": 3}]"
});

tables(cb)

List all tables in the current database.

Example:

exporter.tables((err, tables) => {
  // tables === ['foo', 'bar', 'baz']
});

save(table, filename, cb)

Save the contents of a table to the specified output file.

Example:

exporter.save('table_name', 'data/table_name.json', (err, data) => {
    // Optionally do something else with the JSON.
});