7> CREATE TABLE authors(
8> au_id varchar(11),
9> au_lname varchar(40) NOT NULL,
10> au_fname varchar(20) NOT NULL,
11> phone char(12) NOT NULL DEFAULT ('UNKNOWN'),
12> address varchar(40) NULL,
13> city varchar(20) NULL,
14> state char(2) NULL,
15> zip char(5) NULL,
16> contract bit NOT NULL
17> )
18> GO
1> insert authors values('1', 'Joe', 'Abra', '111 111-1111', '6 St.', 'Berkeley', 'CA', '11111', 1)
2> insert authors values('2', 'Jack', 'Majo', '222 222-2222', '3 St.', 'Oakland' , 'CA', '22222', 1)
3> insert authors values('3', 'Pink', 'Cherry', '333 333-3333', '5 Ln.', 'Vancouver', 'BC', '33333', 1)
4> insert authors values('4', 'Blue', 'Albert', '444 444-4444', '7 Av.', 'Vancouver', 'BC', '44444', 1)
5> insert authors values('5', 'Red', 'Anne', '555 555-5555', '6 Av.', 'Regina', 'SK', '55555', 1)
6> insert authors values('6', 'Black', 'Michel', '666 666-6666', '3 Pl.', 'Regina', 'SK', '66666', 1)
7> insert authors values('7', 'White', 'Sylvia', '777 777-7777', '1 Pl.', 'Rockville', 'MD', '77777', 1)
8> insert authors values('8', 'Yellow','Heather','888 888-8888', '3 Pu', 'Vacaville', 'CA', '88888', 0)
9> insert authors values('9', 'Gold', 'Dep', '999 999-9999', '5 Av.', 'Oakland', 'CA', '99999', 0)
10> insert authors values('10', 'Siler', 'Dean', '000 000-0000', '4 Av.', 'Oakland', 'CA', '00000', 1)
11> GO
(1 rows affected)
(1 rows affected)
(1 rows affected)
(1 rows affected)
(1 rows affected)
(1 rows affected)
(1 rows affected)
(1 rows affected)
(1 rows affected)
(1 rows affected)
1>
2> -- First batch using a straight SELECT:
3> DECLARE @firstname varchar(20)
4> SELECT @firstname = au_fname
5> FROM authors
6> WHERE au_lname = 'Greene'
7> SELECT @firstname
8> GO
--------------------
NULL
(1 rows affected)
1>
2> -- Second batch using a subquery:
3> DECLARE @firstname varchar(20)
4> SELECT @firstname = ( SELECT au_fname
5> FROM authors
6> WHERE au_lname = 'Greene')
7> SELECT @firstname
8> GO
--------------------
NULL
(1 rows affected)
1>
2> drop table authors;
3> GO
1>