SET XACT_ABORT的功能演示

SET XACT_ABORT的SQL语句执行情况演示:

CREATE TABLE student
(
stuid int NOT NULL PRIMARY KEY,
stuname varchar(50)
)
CREATE TABLE score
(
stuid int NOT NULL REFERENCES student(stuid),
score int
)
GO
INSERT INTO student VALUES (1,'a')
INSERT INTO student VALUES (2,'b')
INSERT INTO student VALUES (3,'c')
INSERT INTO student VALUES (4,'d')
GO

--1.无事务,只回滚当前行
SET XACT_ABORT off
BEGIN
INSERT INTO score VALUES (1,1)
INSERT INTO score VALUES (2,2)
INSERT INTO score VALUES (5,5) /* Foreign Key Error */
INSERT INTO score VALUES (3,3)
INSERT INTO score VALUES (4,4)
END
go
select * from score
go
truncate table score
go

--2.有事务,只回滚当前行
SET XACT_ABORT OFF
BEGIN TRAN
INSERT INTO score VALUES (1,1)
INSERT INTO score VALUES (2,2)
INSERT INTO score VALUES (5,5) /* Foreign Key Error */
INSERT INTO score VALUES (3,3)
INSERT INTO score VALUES (4,4)
COMMIT TRAN
go
select * from score
go
truncate table score
go
--3.无事务,中止执行
SET XACT_ABORT on
BEGIN
INSERT INTO score VALUES (1,1)
INSERT INTO score VALUES (2,2)
INSERT INTO score VALUES (5,5) /* Foreign Key Error */
INSERT INTO score VALUES (3,3)
INSERT INTO score VALUES (4,4)
END
go
select * from score
go
truncate table score
go
--4.有事务,回滚整个事务
SET XACT_ABORT on
BEGIN TRAN
INSERT INTO score VALUES (1,1)
INSERT INTO score VALUES (2,2)
INSERT INTO score VALUES (5,5) /* Foreign Key Error */
INSERT INTO score VALUES (3,3)
INSERT INTO score VALUES (4,4)
COMMIT TRAN
go
select * from score
go
truncate table score
go
drop table score
drop table student

存储过程情况演示:

CREATE TABLE student
(
stuid int NOT NULL PRIMARY KEY,
stuname varchar(50)
)
CREATE TABLE score
(
stuid int NOT NULL REFERENCES student(stuid),
score int
)
GO
INSERT INTO student VALUES (1,'a')
INSERT INTO student VALUES (2,'b')
INSERT INTO student VALUES (3,'c')
INSERT INTO student VALUES (4,'d')
GO

--1.无事务,只回滚当前行
create procedure dbo.xact_test
as
SET XACT_ABORT off
BEGIN
INSERT INTO score VALUES (1,1)
INSERT INTO score VALUES (2,2)
INSERT INTO score VALUES (5,5) /* Foreign Key Error */
INSERT INTO score VALUES (3,3)
INSERT INTO score VALUES (4,4)
END
select * from score
go
exec dbo.xact_test
go
truncate table score
go
--2.有事务,只回滚当前行
alter procedure dbo.xact_test
as
SET XACT_ABORT OFF
BEGIN TRAN
INSERT INTO score VALUES (1,1)
INSERT INTO score VALUES (2,2)
INSERT INTO score VALUES (5,5) /* Foreign Key Error */
INSERT INTO score VALUES (3,3)
INSERT INTO score VALUES (4,4)
COMMIT TRAN
select * from score
go
exec dbo.xact_test
go
truncate table score
go
--3.无事务,中止执行
alter procedure dbo.xact_test
as
SET XACT_ABORT on
BEGIN
INSERT INTO score VALUES (1,1)
INSERT INTO score VALUES (2,2)
INSERT INTO score VALUES (5,5) /* Foreign Key Error */
INSERT INTO score VALUES (3,3)
INSERT INTO score VALUES (4,4)
END
select * from score
go
exec dbo.xact_test
go
truncate table score
go
--4.有事务,回滚整个事务
alter procedure dbo.xact_test
as
SET XACT_ABORT on
BEGIN TRAN
INSERT INTO score VALUES (1,1)
INSERT INTO score VALUES (2,2)
INSERT INTO score VALUES (5,5) /* Foreign Key Error */
INSERT INTO score VALUES (3,3)
INSERT INTO score VALUES (4,4)
COMMIT TRAN
select * from score
go
exec dbo.xact_test
go
truncate table score
go
drop proc dbo.xact_test
drop table score
drop table student

SQL语句和存储过程的不同在于第3个测试中。

你可能感兴趣的:(set)