PL/SQL过程和函数

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

SQL> var job varchar2(20)
SQL> var dname varchar(20)
VARCHAR(20) unknown datatype

SQL> var job varchar2(20)
SQL> var dname varchar2(20)
SQL> exec :dname:=get_info('scott',:job);

PL/SQL procedure successfully completed
dname
---------
RESEARCH
job
---------
ANALYST

SQL> var r1 number
SQL> var r2 number
SQL> exec :r1:=30

PL/SQL procedure successfully completed
r1
---------
30

SQL> var r1 number
SQL> exec :r1=result(100,:30);

begin :r1=result(100,:30); end;

ORA-06550: 第 2 行, 第 10 列:
PLS-00103: 出现符号 "="在需要下列之一时：
:= . ( @ % ; indicator
r1
---------

SQL> var r1 number
SQL> exec :r1=result(100,30);

begin :r1=result(100,30); end;

ORA-06550: 第 2 行, 第 10 列:
PLS-00103: 出现符号 "="在需要下列之一时：
:= . ( @ % ; indicator
r1
---------

SQL> var r1 number
SQL> var r2 number
SQL> exec :r2:=30

PL/SQL procedure successfully completed
r2
---------
30

SQL> exec :r1:=result(100,:r2);

PL/SQL procedure successfully completed
r1
---------
3
r2
---------
10

SQL> col object_name format a20
SQL> select object_name,created,status from user_objects
2  where object_type in('PROCEDURE','FUNCTION');

OBJECT_NAME          CREATED     STATUS
-------------------- ----------- -------
ADD_EMPLOYEE         2012/4/11 下 VALID
QUERY_EMPLOYEE       2012/4/11 下 VALID
COMPUTE              2012/4/11 下 VALID
GET_USER             2012/4/11 下 VALID
GET_SAL              2012/4/11 下 VALID
GET_INFO             2012/4/11 下 VALID
RESULT               2012/4/11 下 VALID

7 rows selected

SQL> SLECT text from user_source where name='raise_salary';

SLECT text from user_source where name='raise_salary'

ORA-00900: 无效 SQL 语句

SQL> select text from user_source where name='raise_salary';

TEXT
--------------------------------------------------------------------------------

SQL>