Define variable for query top percent : Top « Query « SQL Server / T-SQL Tutorial






  1. SQL Server / T-SQL Tutorial
  2. Query
  3. Top
3> create table Billings (
4>     BankerID           INTEGER,
5>     BillingNumber      INTEGER,
6>     BillingDate        datetime,
7>     BillingTotal       INTEGER,
8>     TermsID            INTEGER,
9>     BillingDueDate     datetime ,
10>     PaymentTotal       INTEGER,
11>     CreditTotal        INTEGER
12>
13> );
14> 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) PERCENT BankerID
6> FROM Billings
7> GO
BankerID
-----------
          1

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








1.15.Top
1.15.1.TOP n Clause
1.15.2.TOP n Query with ORDER BY
1.15.3.Top Clause with the UPDATE statement.
1.15.4.Use TOP n clause with the DELETE statement.
1.15.5.A SELECT statement with a TOP clause
1.15.6.A SELECT statement with a TOP clause and the PERCENT keyword
1.15.7.A SELECT statement with a TOP clause and the WITH TIES keyword
1.15.8.A query that uses a derived table to retrieve the top 5 Bankers by average Billing total
1.15.9.Define variable for query top percent
1.15.10.Declare variable and use it in 'TOP PERCENT'