This commit is contained in:
Brian Carlson 2010-12-02 17:49:24 -06:00
commit a13a59b706

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@ -11,31 +11,57 @@ with love and TDD.
### Example
var pg = require('pg');
var Client = require('pg').Client;
var client = new Client({
user: 'brianc',
database: 'test',
password: 'boom' //plaintext or md5 supported
});
pg.connect('postgres://user:password@host:port/database', function(error, client) {
if(error) {
//handle error
return
}
//simple query
client.query("CREATE TABLE users(name varchar(10), birthday timestamptz)")
client.connect();
client.on('drain', client.end.bind(client));
//prepared statements with bound parameters
client.query("INSERT INTO users(name, birthday) VALUES($1, $2)" ['brianc', new Date(2010, 01, 01)])
client.query("INSERT INTO users(name, birthday) VALUES($1, $2)", ['ringo', new Date(2008, 01, 01)])
client.query("SELECT * FROM users WHERE birthday > $1", [new Date(2009, 01, 01)], function(error, result) {
if(error) {
//handle error
return
}
var user = result.rows[0]
console.log(user.name) //brianc
console.log(user.birthday.getYear()) //2010
})
//queries are queued on a per-client basis and executed one at a time
client.query("create temp table user(heart varchar(10), birthday timestamptz);");
//parameters are always parsed & prepared inside of PostgreSQL server
//using unnamed prepared statement (no sql injection! yay!)
client.query({
text: 'INSERT INTO user(heart, birthday) VALUES ($1, $2)',
values: ['big', new Date(2031, 03, 03)]
});
client.query({
text: 'INSERT INTO user(heart, birthday) VALUES ($1, $2)',
values: ['filled with kisses', new Date(2010, 01, 01)]
});
var simpleQuery = client.query("select * from user where heart = 'big'");
simpleQuery.on('row', function(row){
console.log(row.heart); //big
console.log(row.birthday.getYear()); //2031
});
var preparedStatement = client.query({
name: 'user by heart type',
text: 'select * from user where heart = $1',
values: ['big']
});
})
preparedStatement.on('row', function(row){
console.log(row.heart); //big
console.log(row.birthday.getYear()); //2031
});
var cachedPreparedStatement = client.query({
name: 'user by heart type',
//you can omit the text the 2nd time if using a named query
values: ['filled with kisses']
});
cachedPreparedStatement.on('row', function(row){
console.log(row.heart); //filled with kisses
console.log(row.birthday.getYear()); //2010
});
### Philosophy