SSIS中的多个语句执行SQL任务

Question

In my SSIS package I have an Execute SQL Task with 2 statements. Basically, they are:

INSERT INTO table2 SELECT * FROM table1;
TRUNCATE TABLE table1

First statement failed (duplicate records). But table1 is empty now! Do I misunderstand basic principles of databases?! I expected the whole batch to fail if the first statement failed.

In the execution report there are expected error messages: 1. Cannot insert duplicate key row. 2. The statement has been terminated. Possible failure reasons bla-bla

My server is SQL Server 2012 SP2 CU1, OLEDB connection

There are no other truncate statements for this table known to me. Have I gone insane?

Answer 1

You need to trap for error ..

INSERT INTO table2 SELECT * FROM table1;
IF @@ERROR = 0
    TRUNCATE TABLE table1

Answer 2

Okay, after some testing I confirmed that this is the intended behavior. Possible solutions include:

1. Using IF @@ERROR (thanks t_m!)
2. Splitting lines into batches with GO. Lines within a batch will execute but the next batch will not.
3. Splitting lines into multiple tasks (duh).