This is a small mysql query builder using the nodejs mysql driver by felixge.
Sample Usage:
```js
var query_builder = require('query_builder');
var dbconn_default = {
host : 'host',
user : 'user',
pass : 'password',
dbase : 'database_schema'
};
var qb = new query_builder( dbconn_default );
var select_details = {
table : 'table_name',
fields : [ 'field1', 'field2', ... ],
conditions : {
field1 : 'value1',
field2 : 'value2'
}
};
qb.select( select_details, function( err, rows...