README.md · hong0220/trino

<a href="https://trino.io/"><img alt="Trino Logo" src=".github/homepage.png" /></a>


 Trino is a fast distributed SQL query engine for big data analytics.


 See the <a href="https://trino.io/docs/current/">User Manual</a> for deployment instructions and end user documentation.


 <a href="https://trino.io/download.html">
 <img src="https://img.shields.io/maven-central/v/io.trino/trino-server.svg?label=Trino" alt="Trino download" />
 </a>
 <a href="https://trino.io/slack.html">
 <img src="https://img.shields.io/static/v1?logo=slack&logoColor=959DA5&label=Slack&labelColor=333a41&message=join%20conversation&color=3AC358" alt="Trino Slack" />
 </a>
 <a href="https://trino.io/presto-the-definitive-guide.html">
 <img src="https://img.shields.io/badge/Presto%3A%20The%20Definitive%20Guide-download-brightgreen" alt="Presto: The Definitive Guide book download" />
 </a>

## Development

See [DEVELOPMENT](DEVELOPMENT.md) for information about code style,
development process, and guidelines.

See [CONTRIBUTING](CONTRIBUTING.md) for contribution requirements.

## Build requirements

* Mac OS X or Linux
* Java 11.0.7+, 64-bit
* Docker

## Building Trino

Trino is a standard Maven project. Simply run the following command from the
project root directory:

./mvnw clean install -DskipTests

On the first build, Maven downloads all the dependencies from the internet
and caches them in the local repository (`~/.m2/repository`), which can take a
while, depending on your connection speed. Subsequent builds are faster.

Trino has a comprehensive set of tests that take a considerable amount of time
to run, and are thus disabled by the above command. These tests are run by the
CI system when you submit a pull request. We recommend only running tests
locally for the areas of code that you change.

## Running Trino in your IDE

### Overview

After building Trino for the first time, you can load the project into your IDE
and run the server.  We recommend using
[IntelliJ IDEA](http://www.jetbrains.com/idea/). Because Trino is a standard
Maven project, you easily can import it into your IDE.  In IntelliJ, choose
*Open Project* from the *Quick Start* box or choose *Open*
from the *File* menu and select the root `pom.xml` file.

After opening the project in IntelliJ, double check that the Java SDK is
properly configured for the project:

* Open the File menu and select Project Structure
* In the SDKs section, ensure that JDK 11 is selected (create one if none exist)
* In the Project section, ensure the Project language level is set to 11

### Running a testing server

The simplest way to run Trino for development is to run the `TpchQueryRunner`
class. It will start a development version of the server that is configured with
the TPCH connector. You can then use the CLI to execute queries against this
server. Many other connectors have their own `*QueryRunner` class that you can
use when working on a specific connector.

### Running the full server

Trino comes with sample configuration that should work out-of-the-box for
development. Use the following options to create a run configuration:

* Main Class: `io.trino.server.TrinoServer`
* VM Options: `-ea -Dconfig=etc/config.properties -Dlog.levels-file=etc/log.properties -Djdk.attach.allowAttachSelf=true`
* Working directory: `$MODULE_DIR$`
* Use classpath of module: `trino-server-main`

The working directory should be the `trino-server-main` subdirectory. In
IntelliJ, using `$MODULE_DIR$` accomplishes this automatically.

### Running the CLI

Start the CLI to connect to the server and run SQL queries:

client/trino-cli/target/trino-cli-*-executable.jar

Run a query to see the nodes in the cluster:

SELECT * FROM system.runtime.nodes;

Run a query against the TPCH connector:

SELECT * FROM tpch.tiny.region;

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