public function where($column, $value, $operator = '=', $table = null)
    {
        $table = $table? $table : $this->table;
        $this->db()->where($column, $value, $operator, $table);
        return $this;
    }
public function where($column, $value, $operator = '=', $table = null)
    {
        $table = $table? $table : $this->table;
        $this->db()->where($column, $value, $operator, $table);
        return $this;
    }
public function where ( $ column , $ value , $ operator = '=' , $ table = null ) { $ table = $ table ? $ table : $ this -> table ; $ this -> db ( ) -> where ( $ column , $ value , $ operator , $ table ) ; return $ this ; }
Sets a where condition

@param string $column Column name
@param string $value Value to match
@param string $operator Operator to compare with
@return object Database instance
Sets a where condition