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SQL code:
mysql> select STR_TO_DATE('20090904','%Y%m%d');
+----------------------------------+
| STR_TO_DATE('20090904','%Y%m%d') |
+----------------------------------+
| 2009-09-04 |
+----------------------------------+
1 row in set (0.00 sec)

mysql>


mysql> select DATE_FORMAT('20090904','%Y-%m-%d');
+------------------------------------+
| DATE_FORMAT('20090904','%Y-%m-%d') |
+------------------------------------+
| 2009-09-04                        |
+------------------------------------+
1 row in set (0.01 sec)


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create table tablename (id int,RQ1 datetime,RQ2 datetime)
-- select * from tablename
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