SQL语句的distinct命令是遍历表中每条记录，按照适配的字段逐一进行去重，检索效率比较低。

A. A.SOUNDEX()

B. B.UPPER()

C. C.UCASE()

D. D.CONVERT()

A. 全球信贷管理平 台

B. 全球信贷支持平 台

C. 全行信贷管理平 台

D. 全行信贷支持平 台

A. SELECT cust_name FROM Customers WHERE cust_state IN (＇IL＇,＇IN＇,＇MI＇ ) UNION SELECT cust_name FROM Customers WHERE cust_name = ＇Fun4All＇;

B. SELECT cust_name FROM Customers WHERE cust_state IN (＇IL＇,＇IN＇,＇MI＇ ) UNION SELECT cust_contact FROM Customers WHERE cust_name = ＇Fun4All＇;

C. SELECT * FROM Customers WHERE cust_state IN (＇IL＇,＇IN＇,＇MI＇ ) UNION SELECT * FROM Customers WHERE cust_name = ＇Fun4All＇;

D. SELECT * FROM Customers WHERE cust_state IN (＇IL＇,＇IN＇,＇MI＇ ) UNION SELECT cust_name FROM Customers WHERE cust_name = ＇Fun4All＇;

A. SELECT a FROM t2;

B. SELECT DISTINCT a FROM t2;

C. SELECT a,count(*) FROM t2 group by a;

D. SELECT a,b,count(*) FROM t2 group by a,b;

A. 市场风险

B. 操作风险

C. 信用风险

D. 声誉风险

A. DBMS

B. DB

C. DBS

D. DBA

A. 一对单引号

B. 一对双引号

C. 一对单引号或一 对双引号都可以

D. 以上都不对

A. [0.25,0.5,0.75]

B. [0.5,0.75]

C. 1 0.5 2 0.75

D. [0.5,0.75,1.0]

A. np.median

B. np.var

C. np.mean

D. np.std

A. 员工应自觉维护 国家利益和金融 安全

B. 员工应把个人职 业生涯和农业银 行发展有机结合 起来

C. 员工应维护农业 银行的形象和利 益

D. 员工应践行爱国 、敬业、诚信、 友善的核心价值 观