WITH SCHEMABINDING clause protects a view by binding it to the database structure, or schema. : Create View « View « SQL Server / T-SQL Tutorial





This prevents the underlying base tables from being deleted or modified in any way that affects the view. 

3>
4> CREATE TABLE dbo.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 dbo.employee VALUES (1, 'Jason' ,  'Martin', 5890,'2005-03-22','North','Vancouver',3);
2> GO

(1 rows affected)
1> INSERT INTO dbo.employee VALUES (2, 'Alison',  'Mathews',4789,'2003-07-21','South','Utown',4);
2> GO

(1 rows affected)
1> INSERT INTO dbo.employee VALUES (3, 'James' ,  'Smith',  6678,'2001-12-01','North','Paris',5);
2> GO

(1 rows affected)
1> INSERT INTO dbo.employee VALUES (4, 'Celia' ,  'Rice',   5567,'2006-03-03','South','London',6);
2> GO

(1 rows affected)
1> INSERT INTO dbo.employee VALUES (5, 'Robert',  'Black',  4467,'2004-07-02','East','Newton',7);
2> GO

(1 rows affected)
1> INSERT INTO dbo.employee VALUES (6, 'Linda' ,  'Green' , 6456,'2002-05-19','East','Calgary',8);
2> GO

(1 rows affected)
1> INSERT INTO dbo.employee VALUES (7, 'David' ,  'Larry',  5345,'2008-03-18','West','New York',9);
2> GO

(1 rows affected)
1> INSERT INTO dbo.employee VALUES (8, 'James' ,  'Cat',    4234,'2007-07-17','West','Regina',9);
2> GO

(1 rows affected)
1> INSERT INTO dbo.employee VALUES (9, 'Joan'  ,  'Act',    6123,'2001-04-16','North','Toronto',10);
2> GO

(1 rows affected)
1>
2> select * from dbo.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 dbo.v_employee
5> WITH SCHEMABINDING
6> AS
7> SELECT ID, first_name
8> FROM dbo.employee
9> GO
1>
2> SET STATISTICS IO ON
3> GO
1> SELECT TOP 5 ID, first_name
2> FROM dbo.v_employee
3>
4> CREATE UNIQUE CLUSTERED INDEX UCI_v_employee
5> ON dbo.v_employee (ID)
6> GO
ID          first_name
----------- ----------
          1 Jason
          2 Alison
          3 James
          4 Celia
          5 Robert

(5 rows affected)
Table 'employee'. Scan count 1, logical reads 2, physical reads 0, read-ahead reads 0, lob logical reads 0, lob physical
 reads 0, lob read-ahead reads 0.

1>
2> CREATE NONCLUSTERED INDEX NI_v_employee
3> ON dbo.v_employee (First_Name)
4> GO

1>
2> SELECT TOP 5 ID, first_name
3> FROM dbo.v_employee
4>
5> SET STATISTICS IO OFF
6> GO
ID          first_name
----------- ----------
          1 Jason
          2 Alison
          3 James
          4 Celia
          5 Robert

(5 rows affected)
Table 'employee'. Scan count 1, logical reads 2, physical reads 0, read-ahead reads 0, lob logical reads 0, lob physical
 reads 0, lob read-ahead reads 0.
1>
2>
3> drop view dbo.v_employee;
4> GO
1> drop table dbo.employee;
2> GO
1>
2>
3>










16.2.Create View
16.2.1.The syntax of the CREATE VIEW statement
16.2.2.A view is a SELECT statement that's stored with the database.
16.2.3.WITH SCHEMABINDING clause protects a view by binding it to the database structure, or schema.
16.2.4.Views have a couple of limitations.
16.2.5.Create a view based on correlated subquery and then query it
16.2.6.Encrypting aView
16.2.7.A CREATE VIEW statement that uses TOP and ORDER BY clauses
16.2.8.Creating an Indexed View (CLUSTERED, NONCLUSTERED)
16.2.9.Using the ORDER BY Clause in a View with TOP 100 PERCENT
16.2.10.Supplying Column Names in the Header of the View