SQL Server/T-SQL Tutorial/System Tables Views/syscomments — различия между версиями
Admin (обсуждение | вклад) м (1 версия) |
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Версия 13:46, 26 мая 2010
Find the names and types of objects that have encrypted text
9> CREATE TABLE authors(
10> au_id varchar(11),
11> au_lname varchar(40) NOT NULL,
12> au_fname varchar(20) NOT NULL,
13> phone char(12) NOT NULL DEFAULT ("UNKNOWN"),
14> address varchar(40) NULL,
15> city varchar(20) NULL,
16> state char(2) NULL,
17> zip char(5) NULL,
18> contract bit NOT NULL
19> )
20> GO
1> insert authors values("1", "Joe", "Abra", "111 111-1111", "6 St.", "Berkeley", "CA", "11111", 1)
2> insert authors values("2", "Jack", "Majo", "222 222-2222", "3 St.", "Oakland" , "CA", "22222", 1)
3> insert authors values("3", "Pink", "Cherry", "333 333-3333", "5 Ln.", "Vancouver", "BC", "33333", 1)
4> insert authors values("4", "Blue", "Albert", "444 444-4444", "7 Av.", "Vancouver", "BC", "44444", 1)
5> insert authors values("5", "Red", "Anne", "555 555-5555", "6 Av.", "Regina", "SK", "55555", 1)
6> insert authors values("6", "Black", "Michel", "666 666-6666", "3 Pl.", "Regina", "SK", "66666", 1)
7> insert authors values("7", "White", "Sylvia", "777 777-7777", "1 Pl.", "Rockville", "MD", "77777", 1)
8> insert authors values("8", "Yellow","Heather","888 888-8888", "3 Pu", "Vacaville", "CA", "88888", 0)
9> insert authors values("9", "Gold", "Dep", "999 999-9999", "5 Av.", "Oakland", "CA", "99999", 0)
10> insert authors values("10", "Siler", "Dean", "000 000-0000", "4 Av.", "Oakland", "CA", "00000", 1)
11> GO
1>
2>
3> CREATE PROCEDURE cleartext
4> AS
5> SELECT * FROM authors
6> GO
1>
2> CREATE PROCEDURE hidetext WITH ENCRYPTION
3> AS
4> SELECT * FROM authors
5> GO
1>
2>
3>
4>
5> SELECT name, type FROM syscomments c JOIN sysobjects o
6> ON o.id=c.id
7> WHERE encrypted = 1
8>
9> GO
name type
-------------------------------------------------------------------------------------------------------------------------------- ----
hidetext P
1>
2>
3> drop table authors;
4> GO
1>
2> drop PROCEDURE cleartext ;
3> GO
Join syscomments and sysobjects
5> CREATE TABLE authors(
6> au_id varchar(11),
7> au_lname varchar(40) NOT NULL,
8> au_fname varchar(20) NOT NULL,
9> phone char(12) NOT NULL DEFAULT ("UNKNOWN"),
10> address varchar(40) NULL,
11> city varchar(20) NULL,
12> state char(2) NULL,
13> zip char(5) NULL,
14> contract bit NOT NULL
15> )
16> GO
1> insert authors values("1", "Joe", "Abra", "111 111-1111", "6 St.", "Berkeley", "CA", "11111", 1)
2> insert authors values("2", "Jack", "Majo", "222 222-2222", "3 St.", "Oakland" , "CA", "22222", 1)
3> insert authors values("3", "Pink", "Cherry", "333 333-3333", "5 Ln.", "Vancouver", "BC", "33333", 1)
4> insert authors values("4", "Blue", "Albert", "444 444-4444", "7 Av.", "Vancouver", "BC", "44444", 1)
5> insert authors values("5", "Red", "Anne", "555 555-5555", "6 Av.", "Regina", "SK", "55555", 1)
6> insert authors values("6", "Black", "Michel", "666 666-6666", "3 Pl.", "Regina", "SK", "66666", 1)
7> insert authors values("7", "White", "Sylvia", "777 777-7777", "1 Pl.", "Rockville", "MD", "77777", 1)
8> insert authors values("8", "Yellow","Heather","888 888-8888", "3 Pu", "Vacaville", "CA", "88888", 0)
9> insert authors values("9", "Gold", "Dep", "999 999-9999", "5 Av.", "Oakland", "CA", "99999", 0)
10> insert authors values("10", "Siler", "Dean", "000 000-0000", "4 Av.", "Oakland", "CA", "00000", 1)
11> GO
1>
2>
3> CREATE PROCEDURE cleartext
4> AS
5> SELECT * FROM authors
6> GO
1>
2> CREATE PROCEDURE hidetext WITH ENCRYPTION
3> AS
4> SELECT * FROM authors
5> GO
1>
2>
3>
4> SELECT o.name, o.id,
5> number, colid, c.status, texttype, encrypted, text
6> FROM syscomments c JOIN sysobjects o
7> ON o.id=c.id
8> WHERE o.id=OBJECT_ID("hidetext") OR o.id=OBJECT_ID("cleartext")
9> GO
name id number colid status texttype encrypted text
-------------------------------------------------------------------------------------------------------------------------------- ----------- ------ ------ ------ -------- --------- -------------------
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cleartext 1175727291 1 1 0 2 0
CREATE PROCEDURE cleartext
AS
SELECT * FROM authors
hidetext 1191727348 1 1 1 6 1 NULL
1>
2> drop table authors;
3> GO
1>
2> drop PROCEDURE cleartext ;
3> GO
1>
2>
Retrieving an Object"s Definition from syscomments
3>
4> CREATE TABLE employee(
5> id INTEGER NOT NULL PRIMARY KEY,
6> first_name VARCHAR(10),
7> last_name VARCHAR(10),
8> salary DECIMAL(10,2),
9> start_Date DATETIME,
10> region VARCHAR(10),
11> city VARCHAR(20),
12> managerid INTEGER
13> );
14> GO
1> INSERT INTO employee VALUES (1, "Jason" , "Martin", 5890,"2005-03-22","North","Vancouver",3);
2> GO
(1 rows affected)
1> INSERT INTO employee VALUES (2, "Alison", "Mathews",4789,"2003-07-21","South","Utown",4);
2> GO
(1 rows affected)
1> INSERT INTO employee VALUES (3, "James" , "Smith", 6678,"2001-12-01","North","Paris",5);
2> GO
(1 rows affected)
1> INSERT INTO employee VALUES (4, "Celia" , "Rice", 5567,"2006-03-03","South","London",6);
2> GO
(1 rows affected)
1> INSERT INTO employee VALUES (5, "Robert", "Black", 4467,"2004-07-02","East","Newton",7);
2> GO
(1 rows affected)
1> INSERT INTO employee VALUES (6, "Linda" , "Green" , 6456,"2002-05-19","East","Calgary",8);
2> GO
(1 rows affected)
1> INSERT INTO employee VALUES (7, "David" , "Larry", 5345,"2008-03-18","West","New York",9);
2> GO
(1 rows affected)
1> INSERT INTO employee VALUES (8, "James" , "Cat", 4234,"2007-07-17","West","Regina",9);
2> GO
(1 rows affected)
1> INSERT INTO employee VALUES (9, "Joan" , "Act", 6123,"2001-04-16","North","Toronto",10);
2> GO
(1 rows affected)
1>
2> select * from employee;
3> GO
id first_name last_name salary start_Date region city managerid
----------- ---------- ---------- ------------ ----------------------- ---------- -------------------- -----------
1 Jason Martin 5890.00 2005-03-22 00:00:00.000 North Vancouver 3
2 Alison Mathews 4789.00 2003-07-21 00:00:00.000 South Utown 4
3 James Smith 6678.00 2001-12-01 00:00:00.000 North Paris 5
4 Celia Rice 5567.00 2006-03-03 00:00:00.000 South London 6
5 Robert Black 4467.00 2004-07-02 00:00:00.000 East Newton 7
6 Linda Green 6456.00 2002-05-19 00:00:00.000 East Calgary 8
7 David Larry 5345.00 2008-03-18 00:00:00.000 West New York 9
8 James Cat 4234.00 2007-07-17 00:00:00.000 West Regina 9
9 Joan Act 6123.00 2001-04-16 00:00:00.000 North Toronto 10
(9 rows affected)
1>
2>
3>
4> CREATE VIEW MyView
5> AS
6> SELECT
7> id
8> FROM
9> Employee
10> GO
1>
2>
3> SELECT
4> [text]
5> FROM
6> syscomments
7> WHERE
8> [id] = OBJECT_ID("dbo.MyView")
9>
10> drop view MyView
11> GO
text
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CREATE VIEW MyView
AS
SELECT
id
FROM
Employee
(1 rows affected)
1>
2>
3> drop table employee;
4> GO
1>