Connected to Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 
Connected as sh

SQL> SELECT TO_CHAR(1890.55,'$99,999.99')
  2  FROM DUAL;


TO_CHAR(1890.55,'$99,999.99')
-----------------------------
  $1,890.55


SQL> 
SQL> SELECT TO_CHAR(1890.55,'$99G999D00')
  2  FROM DUAL;


TO_CHAR(1890.55,'$99G999D00')
-----------------------------
  $1,890.55


SQL> 
SQL> SELECT TO_CHAR(1890.55,'$99G999D99')
  2  FROM DUAL;


TO_CHAR(1890.55,'$99G999D99')
-----------------------------
  $1,890.55


SQL> 
SQL> SELECT TO_CHAR(1890.55,'$0,000.00')
  2  FROM DUAL;


TO_CHAR(1890.55,'$0,000.00')
----------------------------
 $1,890.55


SQL> 


文章题目：$1,890.55格式的显示
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