Define variable to query top number of records : Top « Select Query « SQL Server / T-SQL






Define variable to query top number of records

 


4> create table Billings (
5>     BankerID           INTEGER,
6>     BillingNumber      INTEGER,
7>     BillingDate        datetime,
8>     BillingTotal       INTEGER,
9>     TermsID            INTEGER,
10>     BillingDueDate     datetime ,
11>     PaymentTotal       INTEGER,
12>     CreditTotal        INTEGER
13>
14> );
15> GO
1>
2> INSERT INTO Billings VALUES (1, 1, '2005-01-22', 165, 1,'2005-04-22',123,321);
3> GO

(1 rows affected)
1> INSERT INTO Billings VALUES (2, 2, '2001-02-21', 165, 1,'2002-02-22',123,321.);
2> GO

(1 rows affected)
1> INSERT INTO Billings VALUES (3, 3, '2003-05-02', 165, 1,'2005-04-12',123,321);
2> GO

(1 rows affected)
1> INSERT INTO Billings VALUES (4, 4, '1999-03-12', 165, 1,'2005-04-18',123,321);
2> GO

(1 rows affected)
1> INSERT INTO Billings VALUES (5, 5, '2000-04-23', 165, 1,'2005-04-17',123,321);
2> GO

(1 rows affected)
1> INSERT INTO Billings VALUES (6, 6, '2001-06-14', 165, 1,'2005-04-18',123,321);
2> GO

(1 rows affected)
1> INSERT INTO Billings VALUES (7, 7, '2002-07-15', 165, 1,'2005-04-19',123,321);
2> GO

(1 rows affected)
1> INSERT INTO Billings VALUES (8, 8, '2003-08-16', 165, 1,'2005-04-20',123,321);
2> GO

(1 rows affected)
1> INSERT INTO Billings VALUES (9, 9, '2004-09-17', 165, 1,'2005-04-21',123,321);
2> GO

(1 rows affected)
1> INSERT INTO Billings VALUES (0, 0, '2005-10-18', 165, 1,'2005-04-22',123,321);
2> GO

(1 rows affected)
1>
2>
3> DECLARE @n int
4> SET @n = 6
5> SELECT TOP (@n) BankerID
6> FROM Billings
7> GO
BankerID
-----------
          1
          2
          3
          4
          5
          6

(6 rows affected)
1>
2>
3> drop table Billings;
4> GO

 








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1.TOP Clause in DELETE Statements
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3.Get the bottom two rows by using a TOP keyword and specifying the ORDER BY clause
4.Add the TOP statement: see the first five rows in the result set
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6.TOP 2 WITH TIES