hedera-web-mindshore/js/sql/select.js

var Stmt = require ('./stmt');
var Field = require ('./field');

/**
 * The equivalent of a SQL select.
 **/
module.exports = new Class
({
	Extends: Stmt

	,expr: []

	,addField: function (fieldName)
	{
		this.expr.push (new Field ({name: fieldName}));
	}

	,render: function (batch)
	{
		var sql = 'SELECT '
		
		for (var i = 0; i < this.expr.length; i++)
		{
			if (i > 0)
				sql += ', ';
			sql += this.expr[i].render(batch);
		}
		
		sql += ' FROM ' + this.renderTarget (batch);
		
		if (this.where)
			sql += ' WHERE ' + this.where.render (batch);
		
		return sql;
	}
});