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摘要: Choose two. Examine this SQL statement: UPDATE orders o SET customer_name = (SELECT cust_last_name FROM customers WHERE customer_id=o.customer_id); Wh 阅读全文
posted @ 2019-10-23 15:35 cnblogs_5359 阅读(324) 评论(0) 推荐(0)
摘要: Choose the best answer. Examine this query: SELECT TRUNC (ROUND(156.00,-2),-1) FROM DUAL; What is the result? A) 16 B) 160 C) 150 D) 200 E) 100 Answer 阅读全文
posted @ 2019-10-23 14:48 cnblogs_5359 阅读(260) 评论(0) 推荐(0)