lib/database/schemaGenerators.js
function (name, newName, opts) {
            opts = opts || {};
            this.operations.push(merge({op:"renameColumn", name:name, newName:newName}, opts));
        }
function (name, newName, opts) {
            opts = opts || {};
            this.operations.push(merge({op:"renameColumn", name:name, newName:newName}, opts));
        }
function ( name , newName , opts ) { opts = opts || { } ; this . operations . push ( merge ( { op : "renameColumn" , name : name , newName : newName } , opts ) ) ; }
Modify a column's name in the DDL for the table.

@example
DB.alterTable("artist", function(){
this.renameColumn("name", "artistName");
//=> RENAME COLUMN name TO artist_name
});
Modify a column s name in the DDL for the table .