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我在表 A 上有一个从表 B 中删除的删除触发器。我正在测试触发器失败时会发生什么,为此我重命名了表 B,因此触发器找不到它。

这些是我的正常步骤:

begin transaction
delete from C
delete from A -- this errors for reason mentioned
-- At this point the transaction is automatically rolled-back.

但是,如果我执行以下步骤:

begin transaction
delete from C
delete from B -- this errors for reason mentioned
-- At this point transaction is not rolled back, and I can still commit it.

在第一种情况下,事务如何回滚?难道不应该由应用程序调用回滚或提交吗?

整个区别在于触发器失败与语句失败的原因相同,我希望行为是相同的。

编辑以添加示例:

create table A (a int primary key)
create table B (a int primary key)
create table C (a int primary key)

create trigger Atrig on A for delete as delete B from B, deleted where  B.a=deleted.a

insert into A values(1)
insert into A values(2)
insert into B values(2)
insert into B values(3)

insert into C values(1)
insert into C values(2)
insert into C values(3)

现在将表 B 重命名为 B2(我使用 UI 重命名它,所以没有 sql 命令这样做)

begin transaction
delete C where a=3
delete A where a = 2

以上返回此错误,并回滚事务:

System.Data.OleDb.OleDbException (0x80040E37): [42000]
[Message Class: 16]
[Message State: 1]
[Transaction State: 0]
[Server Name: sybase_15_5_devrs1]
[Procedure Name: Atrig]
[Line Number: 1]
[Native Code: 208]
[ASEOLEDB]B not found. Specify owner.objectname or use sp_help to check whether the object exists (sp_help may produce lots of output).

但是,如果我这样做:

begin transaction
delete C where a=3
delete B where a = 2

上面返回错误,但事务没有回滚,我可以发出'提交事务':

System.Data.OleDb.OleDbException (0x80040E37): [42000]
[Message Class: 16]
[Message State: 1]
[Transaction State: 0]
[Server Name: sybase_15_5_devrs1]
[Native Code: 208]
[ASEOLEDB]B not found. Specify owner.objectname or use sp_help to check whether the object exists (sp_help may produce lots of output).

我认为该行为与此主题有关 在“数据修改错误导致的回滚”表中,它说:

Context: Transaction only
Behavior: Current command is aborted. Previous commands are not rolled back, and subsequent commands are executed. 

Context: Trigger in a transaction
Behavior: Trigger completes, but trigger effects are rolled back.
All data modifications since the start of the transaction are rolled back. If a transaction spans multiple batches, the rollback affects all of those batches.
Any remaining commands in the batch are not executed. Processing resumes at the next batch.
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1 回答 1

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上下文:仅事务
行为:当前命令被中止。之前的命令不回滚,执行后续的命令。

上下文:事务中的
触发器行为:触发器完成,但触发器效果回滚。自事务开始以来的所有数据修改都将回滚。如果事务跨越多个批次,则回滚会影响所有这些批次。批处理中的任何剩余命令都不会执行。处理在下一批继续。


在阅读了您今天早上在答案中指定的同一手册后,我已经在我的 sybase 环境中进行了测试,结果就是这样。

于 2012-05-02T13:57:26.003 回答