Oracle sql语句转换为Mysql语句 急~~

Oracle ：select grbh from com.eway.vo.Zjxx zj where to_char(zj.jbsj,'yyyymm')='"+ sj + "'
其中 sj是字符串参数  现在想把上面的SQL语句转换为Mysql的  主要是时间传入  因为传入的是字符串  200909  而数据库中是  2009-09-31 00：00：00  所以想请教如上在Mysql如何修改~
在线等  急~~

---

DATE_FORMAT(zj.jbsj,'%Y%m')

---

SQL code:
mysql> select now();
+---------------------+
| now() |
+---------------------+
| 2009-09-09 16:08:42 |
+---------------------+
1 row in set (0.00 sec)

mysql> select date_format(now(),'%Y%m');
+---------------------------+
| date_format(now(),'%Y%m') |
+---------------------------+
| 200909 |
+---------------------------+
1 row in set (0.00 sec)

mysql>

---

完全等价的写法 date_format 函数 等价于 to_char，src_TO_DATE函数等价于 to_date

select grbh from zj where date_format(zj.jbsj,'%Y%m')='"+ sj + "'

---

ssql = "select grbh from com.eway.vo.Zjxx zj where date_format(zj.jbsj,'%Y%m')='"+ sj + "'"

---

SELECT GRBH from FFXX WHERE FFSJ=to_date('"ffsj"','yyyy-mm-dd')";

这个该怎么改呢？？谢谢了

---

SQL code

---

Code highlighting produced by Actip