mysql>  SELECT ID, PERSON_ID, BEGIN_TIME, END_TIME
    ->   FROM CUR_WORK_TIME
    ->   WHERE PERSON_ID =  101 ;
+ ----+-----------+---------------------+----------+
 
| ID | PERSON_ID | BEGIN_TIME          | END_TIME |
+ ----+-----------+---------------------+----------+
 
|   1  |        101  |  2004 - 02 - 02   16 : 09 : 41  | NULL     |
+ ----+-----------+---------------------+----------+
 
 1  row in set ( 0 . 00  sec)

mysql>  SELECT ID, PERSON_ID, BEGIN_TIME, END_TIME
    ->   FROM CUR_WORK_TIME
    ->   WHERE PERSON_ID =  101  AND
    ->   CAST(BEGIN_TIME AS DATE) = '2004-02-02';
Empty set ( 0 . 01  sec)