SQL Server/T-SQL Tutorial/System Functions/sp helpconstraint

Материал из SQL эксперт
Перейти к: навигация, поиск

25. 42. sp_helpconstraint 25. 42. 1. <A href="/Tutorial/SQLServer/0500__System-Functions/EXECsphelpconstrainttablename.htm">EXEC sp_helpconstraint </a> 25. 42. 2. <A href="/Tutorial/SQLServer/0500__System-Functions/sphelpconstraintDemo.htm">sp_helpconstraint Demo</a>

EXEC sp_helpconstraint
   <source lang="sql">

9> CREATE TABLE Customers 10> ( 11> CustomerNo int IDENTITY NOT NULL 12> PRIMARY KEY, 13> CustomerName varchar(30) NOT NULL, 14> Address1 varchar(30) NOT NULL, 15> Address2 varchar(30) NOT NULL, 16> City varchar(20) NOT NULL, 17> State char(2) NOT NULL, 18> Zip varchar(10) NOT NULL, 19> Contact varchar(25) NOT NULL, 20> Phone char(15) NOT NULL, 21> FedIDNo varchar(9) NOT NULL, 22> DateInSystem smalldatetime NOT NULL 23> ) 24> GO 1> 2> EXEC sp_helpconstraint Customers 3> GO Object Name





Customers


constraint_type constraint_name

                                                                           delete_action update_action status_enabled status_for_replication constraint_keys




-----------------------------------------------------
------------- ------------- -------------- ---------------------- ----------------------------------------------------------










PRIMARY KEY (clustered) PK__Customers__40E5634A

                                                                           (n/a)         (n/a)         (n/a)          (n/a)                  CustomerID




No foreign keys reference table "Customers", or you do not have permissions on referencing tables. 1> 2> drop table Customers; 3> GO 1> 2></source>


sp_helpconstraint Demo

   <source lang="sql">

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> sp_helpconstraint employee 3> 4> 5> drop table employee; 6> GO Object Name





employee


constraint_type constraint_name

                                                                           delete_action update_action status_enabled status_for_replication constraint_keys




-----------------------------------------------------
------------- ------------- -------------- ---------------------- ----------------------------------------------------------










PRIMARY KEY (clustered) PK__employee__61516785

                                                                           (n/a)         (n/a)         (n/a)          (n/a)                  id




No foreign keys reference table "employee", or you do not have permissions on referencing tables. 1> 2>

3></source>