SELECT statement using the ISNULL function : ISNULL « Data Convert Functions « SQL Server / T-SQL Tutorial

1. SQL Server / T-SQL Tutorial
2. Data Convert Functions
3. ISNULL

8>
9> create table Billings (
10>     BankerID           INTEGER,
11>     BillingNumber      INTEGER,
12>     BillingDate        datetime,
13>     BillingTotal       INTEGER,
14>     TermsID            INTEGER,
15>     BillingDueDate     datetime ,
16>     PaymentTotal       INTEGER,
17>     CreditTotal        INTEGER
18>
19> );
20> 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> SELECT BillingDate,
2>     ISNULL(BillingDate, '1900-01-01') AS NewDate
3> FROM Billings
4> GO
BillingDate             NewDate
----------------------- -----------------------
2005-01-22 00:00:00.000 2005-01-22 00:00:00.000
2001-02-21 00:00:00.000 2001-02-21 00:00:00.000
2003-05-02 00:00:00.000 2003-05-02 00:00:00.000
1999-03-12 00:00:00.000 1999-03-12 00:00:00.000
2000-04-23 00:00:00.000 2000-04-23 00:00:00.000
2001-06-14 00:00:00.000 2001-06-14 00:00:00.000
2002-07-15 00:00:00.000 2002-07-15 00:00:00.000
2003-08-16 00:00:00.000 2003-08-16 00:00:00.000
2004-09-17 00:00:00.000 2004-09-17 00:00:00.000
2005-10-18 00:00:00.000 2005-10-18 00:00:00.000

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