Câu 17: SnowPro Advanced Administrator ADA-C02

An Administrator needs to create a sample of the table LINEITEM. The sample should not be repeatable and the sampling function should take the data by blocks of rows. What select command will generate a sample of 20% of the table?

1. A. select * from LINEITEM sample bernoulli (20);
2. B. select * from LINEITEM sample system (20); — đáp án hiện tại
3. C. select * from LINEITEM tablesample block (20 rows);
4. D. select * from LINEITEM tablesample system (20) seed (1);