remove old dist stuff
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# [knex.js](http://knexjs.org)
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[](https://npmjs.org/package/knex)
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[](https://npmjs.org/package/knex)
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[](https://travis-ci.org/tgriesser/knex)
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[](https://coveralls.io/r/tgriesser/knex?branch=master)
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[](https://david-dm.org/tgriesser/knex)
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[](https://gitter.im/tgriesser/knex)
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[](https://lgtm.com/projects/g/tgriesser/knex/context:javascript)
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> **A SQL query builder that is _flexible_, _portable_, and _fun_ to use!**
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A batteries-included, multi-dialect (MSSQL, MySQL, PostgreSQL, SQLite3, Oracle (including Oracle Wallet Authentication)) query builder for
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Node.js, featuring:
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- [transactions](http://knexjs.org/#Transactions)
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- [connection pooling](http://knexjs.org/#Installation-pooling)
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- [streaming queries](http://knexjs.org/#Interfaces-Streams)
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- both a [promise](http://knexjs.org/#Interfaces-Promises) and [callback](http://knexjs.org/#Interfaces-Callbacks) API
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- a [thorough test suite](https://travis-ci.org/tgriesser/knex)
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- the ability to [run in the Browser](http://knexjs.org/#Installation-browser)
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Node.js versions 8+ are supported.
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[Read the full documentation to get started!](http://knexjs.org)
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[Or check out our Recipes wiki to search for solutions to some specific problems](https://github.com/tgriesser/knex/wiki/Recipes)
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If upgrading from older version, see [Upgrading instructions](https://github.com/tgriesser/knex/blob/master/UPGRADING.md)
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For support and questions, join the `#bookshelf` channel on freenode IRC
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For an Object Relational Mapper, see:
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- http://bookshelfjs.org
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- https://github.com/Vincit/objection.js
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To see the SQL that Knex will generate for a given query, see: [Knex Query Lab](http://michaelavila.com/knex-querylab/)
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## Examples
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We have several examples [on the website](http://knexjs.org). Here is the first one to get you started:
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```js
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const knex = require('knex')({
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dialect: 'sqlite3',
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connection: {
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filename: './data.db',
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},
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});
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// Create a table
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knex.schema
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.createTable('users', function(table) {
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table.increments('id');
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table.string('user_name');
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})
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// ...and another
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.createTable('accounts', function(table) {
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table.increments('id');
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table.string('account_name');
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table
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.integer('user_id')
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.unsigned()
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.references('users.id');
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})
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// Then query the table...
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.then(function() {
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return knex('users').insert({ user_name: 'Tim' });
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})
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// ...and using the insert id, insert into the other table.
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.then(function(rows) {
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return knex('accounts').insert({ account_name: 'knex', user_id: rows[0] });
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})
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// Query both of the rows.
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.then(function() {
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return knex('users')
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.join('accounts', 'users.id', 'accounts.user_id')
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.select('users.user_name as user', 'accounts.account_name as account');
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})
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// .map over the results
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.map(function(row) {
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console.log(row);
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})
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// Finally, add a .catch handler for the promise chain
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.catch(function(e) {
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console.error(e);
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});
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```
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