uses an IF...ELSE statement : IF « Transact SQL « SQL Server / T-SQL Tutorial

1. SQL Server / T-SQL Tutorial
2. Transact SQL
3. IF

4>
5>
6> create table Billings (
7>     BankerID           INTEGER,
8>     BillingNumber      INTEGER,
9>     BillingDate        datetime,
10>     BillingTotal       INTEGER,
11>     TermsID            INTEGER,
12>     BillingDueDate     datetime ,
13>     PaymentTotal       INTEGER,
14>     CreditTotal        INTEGER
15>
16> );
17> 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 @MinBillingDue money, @MaxBillingDue money
4> DECLARE @EarliestBillingDue smalldatetime, @LatestBillingDue smalldatetime
5> SELECT @MinBillingDue = MIN(BillingTotal - PaymentTotal - CreditTotal),
6>     @MaxBillingDue = MAX(BillingTotal - PaymentTotal - CreditTotal),
7>     @EarliestBillingDue = MIN(BillingDueDate),
8>     @LatestBillingDue = MAX(BillingDueDate)
9> FROM Billings
10> WHERE BillingTotal - PaymentTotal - CreditTotal > 0
11> IF @EarliestBillingDue < GETDATE()
12>     BEGIN
13>         PRINT 'Outstanding Billings overdue!'
14>         PRINT 'Dated ' + CONVERT(varchar,@EarliestBillingDue,1) +
15>             ' through ' + CONVERT(varchar,@LatestBillingDue,1) + '.'
16>         PRINT 'Amounting from $' + CONVERT(varchar,@MinBillingDue,1) +
17>             ' to $' + CONVERT(varchar,@MaxBillingDue,1) + '.'
18>     END
19> ELSE
20>     PRINT 'No overdue Billings.'
21> GO
No overdue Billings.
1>
2> drop table Billings;
3> GO