INSTALL:

$ npm install pg-jc

INITIALIZE: app.js ->

 var pgjc = require('pg-jc')

Pass env variables:

# using env variables
$ PGDATABASE=mydb PGPASSWORD= PGPORT=5432 PGHOST=127.0.0.1 PGUSER=postgres node app.js

use a connection string:

# using hardcoded connection string
$  node app.js

app.js ->

    var pgpassword = process.env.PGPASSWD || '';
    var pgConnStr = "postgresql:"+pgpassword+"//[email protected]:5432/mydb";
    var mydb = pgjc(pgConnStr);



/* using a env variables */
    var mydb = pgjc(); // init function looks for envs by default, then connection string.

SCHEMA TIPS FOR EASIER BETTER DML COMPATIBILITY:

create table <tableName> (
    <tableName>_id SERIAL PRIMARY KEY,
    ...
);
/* replace <tableName> with your table */
Insert, Update, Upsert, Delete Return the primary key of the table

Insert

INSERT INTO user (fname,lname) VALUES ('joe','johns');
mydb.user.insert().values({ fname: 'joe', lname: 'johns' }).run(console.log);

Upsert

/* UPDATE, IF NOT EXISTS, INSERT, IF DUPE then SELECT and RETURN PRIMARY KEY ID. */
mydb.user.util().upsertUsingColumnValues({ fname: 'joe', lname: 'johns' },{ fname: 'joe', lname: 'johns' },console.log);

Select

psql Select Example #1->

mydb# SELECT * FROM user;

Javascript Select Example #1->

mydb.user.selectAll().run(function(err,data){
    if(err) throw err;
    console.log(data);  
});

psql Select Example #2->

SELECT phone_id FROM user
JOIN phone ON phone.phone_id = user.phone_id
WHERE user.user_id = 1
GROUP BY user.user_id, user.time_created
ORDER BY user.time_created DESC
OFFSET 2
LIMIT 5;

Join , Order By , Group By, Limit , Offset

Javascript Select Example #2->

mydb.user.select(['phone_id'])
    .join({ phone: { on: [{"phone.phone_id":"user.phone_id"}] } })
    .where({ user_id: 1 })
    .groupBy("user.user_id, user.time_created")
    .orderBy("user.time_created DESC") // "col1 dir1, col2 dir2,...,etc"
    .offset(2)
    .limit('all') // 1 , 2, 100, 'all'
    .run()
    .then(function(data){
        console.log(data)
    })
    .fail(function(err){
        console.error(err)
    })
    .done()

Update

psql ->
    UPDATE user SET fname = 'joe', lname = 'johns' WHERE fname = 'joes';
js ->
    mydb.user.update().set({ fname: 'joe', lname: 'johns' }).where({ fname: 'joes' }).run(console.log)

Delete

psql ->
    DELETE FROM user WHERE true;
js ->
    mydb.user.deleteFrom().where("true").run(console.log); // oh no! nukes user table.

Raw PSQL

mydb.user.rawsql("Select * from user order by random() limit 1").run(console.log);