Oracle PL/SQL Tutorial/System Tables Data Dictionary/user procedures
Содержание
Getting Information on Functions
You can get information on your functions from the user_procedures view.
SQL> desc user_procedures;
Name Null? Type
--------------------
OBJECT_NAME NOT NULL VARCHAR2(30) --Name of the object, which may be a procedure, function, or package name.
PROCEDURE_NAME VARCHAR2(30)
AGGREGATE VARCHAR2(3) --Whether the procedure is an aggregate function. Set to YES or NO.
PIPELINED VARCHAR2(3)
IMPLTYPEOWNER VARCHAR2(30) --Name of the owner of the implementation type (if any).
IMPLTYPENAME VARCHAR2(30) --Name of the implementation type (if any).
PARALLEL VARCHAR2(3) --Whether or not the procedure or function is enabled for parallel queries. Set to YES or NO.
INTERFACE VARCHAR2(3)
DETERMINISTIC VARCHAR2(3)
AUTHID VARCHAR2(12)
SQL>
SQL>
SQL>
SQL> -- create demo table
SQL> create table Employee(
2 ID VARCHAR2(4 BYTE) NOT NULL,
3 First_Name VARCHAR2(10 BYTE),
4 Last_Name VARCHAR2(10 BYTE),
5 Start_Date DATE,
6 End_Date DATE,
7 Salary Number(8,2),
8 City VARCHAR2(10 BYTE),
9 Description VARCHAR2(15 BYTE)
10 )
11 /
Table created.
SQL>
SQL> -- prepare data
SQL> insert into Employee(ID, First_Name, Last_Name, Start_Date, End_Date, Salary, City, Description)
2 values ("01","Jason", "Martin", to_date("19960725","YYYYMMDD"), to_date("20060725","YYYYMMDD"), 1234.56, "Toronto", "Programmer")
3 /
1 row created.
SQL> insert into Employee(ID, First_Name, Last_Name, Start_Date, End_Date, Salary, City, Description)
2 values("02","Alison", "Mathews", to_date("19760321","YYYYMMDD"), to_date("19860221","YYYYMMDD"), 6661.78, "Vancouver","Tester")
3 /
1 row created.
SQL> insert into Employee(ID, First_Name, Last_Name, Start_Date, End_Date, Salary, City, Description)
2 values("03","James", "Smith", to_date("19781212","YYYYMMDD"), to_date("19900315","YYYYMMDD"), 6544.78, "Vancouver","Tester")
3 /
1 row created.
SQL> insert into Employee(ID, First_Name, Last_Name, Start_Date, End_Date, Salary, City, Description)
2 values("04","Celia", "Rice", to_date("19821024","YYYYMMDD"), to_date("19990421","YYYYMMDD"), 2344.78, "Vancouver","Manager")
3 /
1 row created.
SQL> insert into Employee(ID, First_Name, Last_Name, Start_Date, End_Date, Salary, City, Description)
2 values("05","Robert", "Black", to_date("19840115","YYYYMMDD"), to_date("19980808","YYYYMMDD"), 2334.78, "Vancouver","Tester")
3 /
1 row created.
SQL> insert into Employee(ID, First_Name, Last_Name, Start_Date, End_Date, Salary, City, Description)
2 values("06","Linda", "Green", to_date("19870730","YYYYMMDD"), to_date("19960104","YYYYMMDD"), 4322.78,"New York", "Tester")
3 /
1 row created.
SQL> insert into Employee(ID, First_Name, Last_Name, Start_Date, End_Date, Salary, City, Description)
2 values("07","David", "Larry", to_date("19901231","YYYYMMDD"), to_date("19980212","YYYYMMDD"), 7897.78,"New York", "Manager")
3 /
1 row created.
SQL> insert into Employee(ID, First_Name, Last_Name, Start_Date, End_Date, Salary, City, Description)
2 values("08","James", "Cat", to_date("19960917","YYYYMMDD"), to_date("20020415","YYYYMMDD"), 1232.78,"Vancouver", "Tester")
3 /
1 row created.
SQL>
SQL>
SQL>
SQL> -- display data in the table
SQL> select * from Employee
2 /
ID FIRST_NAME LAST_NAME START_DAT END_DATE SALARY CITY DESCRIPTION
---- ---------- ---------- --------- --------- ---------- ---------- ---------------
01 Jason Martin 25-JUL-96 25-JUL-06 1234.56 Toronto Programmer
02 Alison Mathews 21-MAR-76 21-FEB-86 6661.78 Vancouver Tester
03 James Smith 12-DEC-78 15-MAR-90 6544.78 Vancouver Tester
04 Celia Rice 24-OCT-82 21-APR-99 2344.78 Vancouver Manager
05 Robert Black 15-JAN-84 08-AUG-98 2334.78 Vancouver Tester
06 Linda Green 30-JUL-87 04-JAN-96 4322.78 New York Tester
07 David Larry 31-DEC-90 12-FEB-98 7897.78 New York Manager
08 James Cat 17-SEP-96 15-APR-02 1232.78 Vancouver Tester
8 rows selected.
SQL>
SQL>
SQL> CREATE OR REPLACE FUNCTION average_salary RETURN NUMBER AS
2 v_average_salary NUMBER;
3 BEGIN
4 SELECT AVG(salary)
5 INTO v_average_salary
6 FROM employee;
7 RETURN v_average_salary;
8 END average_salary;
9 /
Function created.
SQL>
SQL>
SQL> SELECT object_name, aggregate, parallel
2 FROM user_procedures
3 WHERE object_name = "AVERAGE_SALARY";
OBJECT_NAME AGG PAR
------------------------------ --- ---
AVERAGE_SALARY NO NO
SQL> -- clean the table
SQL> drop table Employee
2 /
Table dropped.
SQL>
-
Getting Information on Functions and Procedures in a Package
You can get information on your functions and procedures in a package from the user_procedures view.
SQL> desc user_procedures;
Name Null? Type
-------------------
OBJECT_NAME NOT NULL VARCHAR2(30)
PROCEDURE_NAME VARCHAR2(30)
AGGREGATE VARCHAR2(3)
PIPELINED VARCHAR2(3)
IMPLTYPEOWNER VARCHAR2(30)
IMPLTYPENAME VARCHAR2(30)
PARALLEL VARCHAR2(3)
INTERFACE VARCHAR2(3)
DETERMINISTIC VARCHAR2(3)
AUTHID VARCHAR2(12)
SQL>
SQL> -- create demo table
SQL> create table Employee(
2 ID VARCHAR2(4 BYTE) NOT NULL,
3 First_Name VARCHAR2(10 BYTE),
4 Last_Name VARCHAR2(10 BYTE),
5 Start_Date DATE,
6 End_Date DATE,
7 Salary Number(8,2),
8 City VARCHAR2(10 BYTE),
9 Description VARCHAR2(15 BYTE)
10 )
11 /
Table created.
SQL> -- prepare data
SQL> insert into Employee(ID, First_Name, Last_Name, Start_Date, End_Date, Salary, City, Description)
2 values ("01","Jason", "Martin", to_date("19960725","YYYYMMDD"), to_date("20060725","YYYYMMDD"), 1234.56, "Toronto", "Programmer")
3 /
1 row created.
SQL>
SQL> insert into Employee(ID, First_Name, Last_Name, Start_Date, End_Date, Salary, City, Description)
2 values("02","Alison", "Mathews", to_date("19760321","YYYYMMDD"), to_date("19860221","YYYYMMDD"), 6661.78, "Vancouver","Tester")
3 /
1 row created.
SQL>
SQL>
SQL> insert into Employee(ID, First_Name, Last_Name, Start_Date, End_Date, Salary, City, Description)
2 values("03","James", "Smith", to_date("19781212","YYYYMMDD"), to_date("19900315","YYYYMMDD"), 6544.78, "Vancouver","Tester")
3 /
1 row created.
SQL>
SQL> insert into Employee(ID, First_Name, Last_Name, Start_Date, End_Date, Salary, City, Description)
2 values("04","Celia", "Rice", to_date("19821024","YYYYMMDD"), to_date("19990421","YYYYMMDD"), 2344.78, "Vancouver","Manager")
3 /
1 row created.
SQL>
SQL> insert into Employee(ID, First_Name, Last_Name, Start_Date, End_Date, Salary, City, Description)
2 values("05","Robert", "Black", to_date("19840115","YYYYMMDD"), to_date("19980808","YYYYMMDD"), 2334.78, "Vancouver","Tester")
3 /
1 row created.
SQL>
SQL> insert into Employee(ID, First_Name, Last_Name, Start_Date, End_Date, Salary, City, Description)
2 values("06","Linda", "Green", to_date("19870730","YYYYMMDD"), to_date("19960104","YYYYMMDD"), 4322.78,"New York", "Tester")
3 /
1 row created.
SQL>
SQL> insert into Employee(ID, First_Name, Last_Name, Start_Date, End_Date, Salary, City, Description)
2 values("07","David", "Larry", to_date("19901231","YYYYMMDD"), to_date("19980212","YYYYMMDD"), 7897.78,"New York", "Manager")
3 /
1 row created.
SQL>
SQL> insert into Employee(ID, First_Name, Last_Name, Start_Date, End_Date, Salary, City, Description)
2 values("08","James", "Cat", to_date("19960917","YYYYMMDD"), to_date("20020415","YYYYMMDD"), 1232.78,"Vancouver", "Tester")
3 /
1 row created.
SQL>
SQL>
SQL> -- display data in the table
SQL> select * from Employee
2 /
ID FIRST_NAME LAST_NAME START_DAT END_DATE SALARY CITY DESCRIPTION
---- -------------------- -------------------- --------- --------- ---------- ---------- ---------------
01 Jason Martin 25-JUL-96 25-JUL-06 1234.56 Toronto Programmer
02 Alison Mathews 21-MAR-76 21-FEB-86 6661.78 Vancouver Tester
03 James Smith 12-DEC-78 15-MAR-90 6544.78 Vancouver Tester
04 Celia Rice 24-OCT-82 21-APR-99 2344.78 Vancouver Manager
05 Robert Black 15-JAN-84 08-AUG-98 2334.78 Vancouver Tester
06 Linda Green 30-JUL-87 04-JAN-96 4322.78 New York Tester
07 David Larry 31-DEC-90 12-FEB-98 7897.78 New York Manager
08 James Cat 17-SEP-96 15-APR-02 1232.78 Vancouver Tester
8 rows selected.
SQL>
SQL>
SQL> CREATE OR REPLACE PACKAGE employee_package AS
2 TYPE t_ref_cursor IS REF CURSOR;
3 FUNCTION get_employee_ref_cursor RETURN t_ref_cursor;
4 PROCEDURE update_salary (p_id IN VARCHAR2,p_factor IN NUMBER);
5 END employee_package;
6 /
Package created.
SQL>
SQL> CREATE OR REPLACE PACKAGE BODY employee_package AS
2 FUNCTION get_employee_ref_cursor
3 RETURN t_ref_cursor IS
4 employee_ref_cursor t_ref_cursor;
5 BEGIN
6 -- get the REF CURSOR
7 OPEN employee_ref_cursor FOR
8 SELECT id, first_name, salary
9 FROM employee;
10 -- return the REF CURSOR
11 RETURN employee_ref_cursor;
12 END get_employee_ref_cursor;
13
14 PROCEDURE update_salary (p_id IN VARCHAR2,
15 p_factor IN NUMBER
16 ) AS
17 v_employee_count INTEGER;
18 BEGIN
19 UPDATE employee
20 SET salary = salary * p_factor
21 WHERE id = p_id;
22 COMMIT;
23 EXCEPTION
24 WHEN OTHERS THEN
25 -- perform a rollback when an exception occurs
26 ROLLBACK;
27 END update_salary;
28 END employee_package;
29 /
Package body created.
SQL>
SQL> SELECT object_name, procedure_name
2 FROM user_procedures
3 WHERE object_name = "EMPLOYEE_PACKAGE";
OBJECT_NAME PROCEDURE_NAME
------------------------------ ------------------------------
EMPLOYEE_PACKAGE GET_EMPLOYEE_REF_CURSOR
EMPLOYEE_PACKAGE UPDATE_SALARY
SQL>
SQL> -- clean the table
SQL> drop table Employee
2 /
Table dropped.
SQL>
SQL>
Getting Information on Procedures
You can get information on your procedures from the user_procedures view.
SQL> desc user_procedures;
Name Null? Type
--------------------
OBJECT_NAME NOT NULL VARCHAR2(30) --Name of the object, which may be a procedure, function, or package name.
PROCEDURE_NAME VARCHAR2(30) --Whether the procedure is an aggregate function. Set to YES or NO.
AGGREGATE VARCHAR2(3)
PIPELINED VARCHAR2(3)
IMPLTYPEOWNER VARCHAR2(30) --Name of the owner of the implementation type (if any).
IMPLTYPENAME VARCHAR2(30) --Name of the implementation type (if any).
PARALLEL VARCHAR2(3) --Whether or not the procedure or function is enabled for parallel queries. Set to YES or NO.
INTERFACE VARCHAR2(3)
DETERMINISTIC VARCHAR2(3)
AUTHID VARCHAR2(12)
Join user_procedures and user_objects
SQL>
SQL>
SQL> SELECT AUTHID
2 , p.object_name program_name
3 , procedure_name subprogram_name
4 FROM user_procedures p, user_objects o
5 WHERE p.object_name = o.object_name
6 AND p.object_name LIKE "&1"
7 ORDER BY AUTHID, procedure_name;
Enter value for 1:
old 6: AND p.object_name LIKE "&1"
new 6: AND p.object_name LIKE ""
no rows selected