View in Sql Server


View in Sql Server

  • View is a virtual table
  • It s contains columns and data in different table
  • View does not contain any data directly. Its a set of select query
Table 1

Sno
Sname
Table 2
Sno
Lname
             
View_table1_table2

Sname
Lname

Above drawing table 1 and table we will write join query after we can create view

Syntax

CREATE VIEW JS_VIEW_NAME
AS
[SELECT STATEMENT]

Why we are use View ?
 View is used for security mechanism .if you restricted particular column for users .

Sql Server Syntex for View
CREATE VIEW
CREATE VIEW JS_VIEW
AS
SELECT *FROM STUD A,LIB L WHERE A.SNO=L.SON
ALTER VIEW
ALTER VIEW JS_VIEW
AS
SELECT *FROM STUDENTTABLE A,LIB L WHERE A.SNO=L.SON
SELECT VIEW
SELECT*FROM JS_VIEW
DROP VIEW:
DROP VIEW JS_VIEW

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