A SELECT statement that doesn't provide a name for a calculated column : Column Alias « Query « SQL Server / T-SQL Tutorial






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> SELECT BillingNumber, BillingDate, BillingTotal,
4>     BillingTotal - PaymentTotal - CreditTotal
5> FROM Billings
6> GO
BillingNumber BillingDate             BillingTotal
------------- ----------------------- ------------ -----------
            1 2005-01-22 00:00:00.000          165        -279
            2 2001-02-21 00:00:00.000          165        -279
            3 2003-05-02 00:00:00.000          165        -279
            4 1999-03-12 00:00:00.000          165        -279
            5 2000-04-23 00:00:00.000          165        -279
            6 2001-06-14 00:00:00.000          165        -279
            7 2002-07-15 00:00:00.000          165        -279
            8 2003-08-16 00:00:00.000          165        -279
            9 2004-09-17 00:00:00.000          165        -279
            0 2005-10-18 00:00:00.000          165        -279

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








1.14.Column Alias
1.14.1.A SELECT statement that uses the AS keyword (the preferred technique)
1.14.2.A SELECT statement that doesn't provide a name for a calculated column
1.14.3.Alias a column: Column Alias
1.14.4.Alias a column: Alias = Column
1.14.5.create an alias column called SubCategory.