node-teradata

node-teradata

Teradata for Node.js

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Features

• Asynchronous
• Read/Write
• Prepared Statements
• Connection Pool
• Keep Alive

Installation

npm install node-teradata

Java

node-teradata uses JDBC to communicate with Teradata:

1. Download and install JDK 8 (1.8.0 u112)
2. Make sure Java is included in your system path

Other versions of the JDK may work, but they have not been tested

Teradata

A JDBC driver is provided by Teradata for communicating with their databases via Java:

1. Download the Teradata JDBC Driver (15.10.00.33)
2. Create a "jars" folder in the root of your app
3. Extract the archive's contents into the folder:

• tdgssconfig.jar
• terajdbc4.jar

Other versions of the Teradata JDBC Driver may work, but they have not been tested

Usage

Include module

var Teradata = require('node-teradata');

Create an instance

var teradata = new Teradata(config);

Example Config

var config = {
  url: 'jdbc:teradata://myserver',
  username: 'MyUsername',
  password: 'MyPassword',
  driver: './jars/',
  minPoolSize: 1,
  maxPoolSize: 100,
  keepalive: {
    interval: 60000,
    query: 'SELECT 1',
    enabled: true
  },
  jvmOptions: ['-Xrs']
};

Examples

Read

var id = 7;
var sql = 'SELECT * FROM MyDatabase.MyTable WHERE Id = ' + id;

return teradata.read(sql)
  .then(function(response) {
    console.log(response);
  });

Write

var id = 7;
var sql = 'DELETE FROM MyDatabase.MyTable WHERE Id = ' + id;

return teradata.write(sql)
  .then(function(count) {
    console.log(count);
  });

Read Prepared Statement

Anonymous Parameters

var id = 7;
var sql = 'SELECT * FROM MyDatabase.MyTable WHERE Id = ?';

return teradata.readPreparedStatement(sql, [
    teradata.createPreparedStatementParam(1, 'Int', Number(id))
  ])
  .then(function(response) {
    console.log(response);
  });

Named Parameters

var id = 7;
var sql = 'SELECT * FROM MyDatabase.MyTable WHERE Id = :id';

return teradata.readPreparedStatement(sql, [
    teradata.createPreparedStatementParam('id', 'Int', Number(id))
  ])
  .then(function(response) {
    console.log(response);
  });

Write Prepared Statement

Anonymous Parameters

var id = 7;
var username = 'Foo';
var sql = 'UPDATE MyDatabase.MyTable SET Username = ? WHERE Id = ?';

return teradata.writePreparedStatement(sql, [
    teradata.createPreparedStatementParam(1, 'String', username),
    teradata.createPreparedStatementParam(2, 'Int', Number(id))
  ])
  .then(function(count) {
    console.log(count);
  });

Named Parameters

var id = 7;
var username = 'Foo';
var sql = 'UPDATE MyDatabase.MyTable SET Username = :username WHERE Id = :id';

return teradata.writePreparedStatement(sql, [
    teradata.createPreparedStatementParam('id', 'Int', Number(id)),
    teradata.createPreparedStatementParam('username', 'String', username)
  ])
  .then(function(count) {
    console.log(count);
  });

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See the docs for more information