阿里云大数据acp认证考试资料真题201-ACP考试授权码900元

超值优惠:原价1200元阿里云ACP报名授权码只要900元

本站ACP报名授权码适合以下考试:

每日练习:大数据ACP认证考试真题

(单选题)A为ADS中的普通表,a为A的分区列,类型为bigint,b为A中的普通列,类型为bigint,请判断以下相关SQL中哪句语法是错误的?

  1. SELECT a FROM A ORDER BY a LIMIT 100
  2. SELECT a+b, count(a) FROM A group by a+b ORDER BY a
  3. SELECT a,b FROM A ORDER BY a+b LIMIT 100
  4. SELECT a, count(a) FROM A group by a ORDER BY a

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真题解析:答案及ACP真题解析

答案: B

数据分析:本ACP真题答题统计

SELECT a FROM A ORDER BY a LIMIT 100
  0 / 0% answers
SELECT a+b, count(a) FROM A group by a+b ORDER BY a
  1 / 50% answers
SELECT a,b FROM A ORDER BY a+b LIMIT 100
  1 / 50% answers
SELECT a, count(a) FROM A group by a ORDER BY a
  0 / 0% answers

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