SQL Server/T-SQL Tutorial/System Settings/OBJECT ID
Содержание
Check existance of a view by using OBJECT_ID
<source lang="sql">
6> IF OBJECT_ID("dbo.VCustsWithOrders") IS NOT NULL 7> DROP VIEW dbo.VCustsWithOrders; 8> GO</source>
Code that tests for the existence of a temporary table
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IF OBJECT_ID("tempdb..#AllUserTables") IS NOT NULL
DROP TABLE #AllUserTables</source>
SELECT object_id("employee")
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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></source>
The syntax of the OBJECT_ID function
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OBJECT_ID("object") The syntax of the DB_ID function DB_ID("database")</source>
Use OBJECT_ID in insert statement
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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></source>
