Mega Code Archive
Forcing an exclusive table lock
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CREATE TABLE authors(
au_id varchar(11),
au_lname varchar(40) NOT NULL,
au_fname varchar(20) NOT NULL,
phone char(12) NOT NULL DEFAULT ('UNKNOWN'),
address varchar(40) NULL,
city varchar(20) NULL,
state char(2) NULL,
zip char(5) NULL,
contract bit NOT NULL
)
GO
insert authors values('1', 'Joe', 'Abra', '111 111-1111', '6 St.', 'Berkeley', 'CA', '11111', 1)
insert authors values('2', 'Jack', 'Majo', '222 222-2222', '3 St.', 'Oakland' , 'CA', '22222', 1)
insert authors values('3', 'Pink', 'Cherry', '333 333-3333', '5 Ln.', 'Vancouver', 'BC', '33333', 1)
insert authors values('4', 'Blue', 'Albert', '444 444-4444', '7 Av.', 'Vancouver', 'BC', '44444', 1)
insert authors values('5', 'Red', 'Anne', '555 555-5555', '6 Av.', 'Regina', 'SK', '55555', 1)
insert authors values('6', 'Black', 'Michel', '666 666-6666', '3 Pl.', 'Regina', 'SK', '66666', 1)
insert authors values('7', 'White', 'Sylvia', '777 777-7777', '1 Pl.', 'Rockville', 'MD', '77777', 1)
insert authors values('8', 'Yellow','Heather','888 888-8888', '3 Pu', 'Vacaville', 'CA', '88888', 0)
insert authors values('9', 'Gold', 'Dep', '999 999-9999', '5 Av.', 'Oakland', 'CA', '99999', 0)
insert authors values('10', 'Siler', 'Dean', '000 000-0000', '4 Av.', 'Oakland', 'CA', '00000', 1)
GO
BEGIN TRAN
SELECT *
FROM authors (tablockx)
WHERE au_lname = 'Green'
WAITFOR DELAY '00:02:00'
ROLLBACK TRAN
GO
drop table authors;
GO
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