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--> Title  : SQL ServerϵͳÊÓͼ
--> Author : wufeng4552
--> Date   : 2009-10-28
 
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ORACLE PL/SQL ¶ÔÏó(object)ѧϰ±Ê¼Ç(Èý)

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SQLÓï¾äPART9

Group functions
SELECT [column,] group_function(column) ... from table [WHERE condition] [GROUP BY group_by_expression] [ORDER BY column];
e.g.:
SELECT department_id, job_id, SUM(salary), COUNT(employee_id) from employees GROUP BY department_id, job_id ;
SELECT [column,] group_function(column).. ......

SQLÓï¾äPART11


1. My test: (create and grant the sysdba to a new user by SQL*Plus)
CREATE USER FJTEST1 IDENTIFIED BY JEANJEANFANG;
GRANT SYSDBA TO FJTEST;
REVOKE SYSDBA from FJTEST;
CONNECT FJTEST1/JEANJEANFANG AS SYSDBA;
2. Using ORAPWD in windows:
C:\» ORAPWD;
(show help information)
3. to see th ......
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