SQL Server/T-SQL Tutorial/System Settings/OBJECT ID

Check existance of a view by using OBJECT_ID

6> IF OBJECT_ID("dbo.VCustsWithOrders") IS NOT NULL
7>   DROP VIEW dbo.VCustsWithOrders;
8> GO

Code that tests for the existence of a temporary table

IF OBJECT_ID("tempdb..#AllUserTables") IS NOT NULL
    DROP TABLE #AllUserTables

SELECT object_id("employee")

5> CREATE TABLE employee(
6>    id          INTEGER NOT NULL PRIMARY KEY,
7>    first_name  VARCHAR(10),
8>    last_name   VARCHAR(10),
9>    salary      DECIMAL(10,2),
10>    start_Date  DATETIME,
11>    region      VARCHAR(10),
12>    city        VARCHAR(20),
13>    managerid   INTEGER
14> );
15> 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> SELECT id
4> FROM sysobjects
5> WHERE name ="employee"
6> GO
id
-----------
 1385771994
(1 rows affected)
1>
2> SELECT object_id("employee")
3> GO
-----------
 1385771994
(1 rows affected)
1>
2>
3> drop table employee;
4> GO
1>
2>

The syntax of the OBJECT_ID function

OBJECT_ID("object")
The syntax of the DB_ID function 
DB_ID("database")

Use OBJECT_ID in insert statement

3> CREATE TABLE mytable
4> (
5>     int_val        int,
6>     smallint_val   smallint,
7>     numeric_val    numeric(8, 2),
8>     tiny_const     tinyint,
9>     float_val      float,
10>     date_val       datetime,
11>     char_strng     char(10)
12> )
13> GO
1>
2> DECLARE @myvar1 numeric(8, 2)
3> SELECT @myvar1=65.45
4>
5> INSERT mytable (int_val, smallint_val, numeric_val, tiny_const,
6>     float_val, date_val, char_strng)
7> VALUES
8> (OBJECT_ID("mytable"), @@spid, @myvar1 / 10.0, 5,
9> SQRT(144), GETDATE(), REPLICATE("A", 3) + REPLICATE("B", 3))
10> GO
(1 rows affected)
1>
2> SELECT * FROM mytable
3> GO
int_val     smallint_val numeric_val tiny_const float_val                date_val                char_strng
----------- ------------ ----------- ---------- ------------------------ ----------------------- ----------
 1019202731           51        6.55          5                       12 2008-08-17 13:19:00.380 AAABBB
(1 rows affected)
1>
2>
3> drop table myTable;
4> GO
1>
2>