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Is China the third largest country in the world?()
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The CUSTOMERS table has these columns:CUSTOMER_ID NUMBER (4) NOT NULLCUSTOMER_NAME VARCHAR2 (100) NOT NULLSTREET_ADDRESS VARCHAR2 (150)CITY_ADDRESS VARHCAR2 (50)STATE_ADDRESS VARCHAR2 (50)PROVINCE_ADDRESS VARCHAR2 (50)COUNTRY_ADDRESS VARCHAR2 (50)POSTAL_CODE VARCHAR2 (12)CUSTOMER_PHONE VARCHAR2 (20)The CUSTOMER_ID column is the primary key for the table.You need to determine how dispersed your customer base is.Which expression finds the number of different countries represented in the CUSTOMERS table?（）A. COUNT(UPPER(country_address))B. COUNT(DIFF(UPPER(country_address)))C. COUNT(UNIQUE(UPPER(country_address)))D. COUNT DISTINTC UPPER(country_address)E. COUNT(DISTINTC (UPPER(country_address)))
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You need to calculate the total of all salaries in the accounting department. Which group function should you use? ()
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Youexecutedthefollowingcode：SQLCREATETABLECOUNTRY（COUNTRY_IDCHAR（2）CONSTRAINTCOUNTRY_ID_nnNOTNULL，COUNTRY_NAMEVARCHAR2（20），CURRENCY_NAMEVARCHAR2（20），CONSTRAINTCOUNTRY_ID_PKPRIMARYKEY（COUNTRY_ID））ORGANIZATIONINDEX；Inwhichtablespacewillthemappingtablebecreated？（）A.SYSTEMtablespaceB.SYSAUXtablespaceC.UndotablespaceD.ThetablespaceoftheIndexOrganizedTable（IOT）
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Youexecutedthefollowingcode：SQLCERATETABLECOUNTRY（COUNTRY_IDCHAR（2）CONSTRAINTCOUNTRY_ID_nnNOTNULL，COUNTRY_NAMEVARCHAR2（20），CURRENCY_NAMEVARCHAR2（20），CONSTRAINTCOUNTRY_ID_PKPRIMARYKEY（COUNTRY_ID））ORGANIZATIONINDEX；Whichtypesoftableswillbecreatedautomatically？（）A.journaltableB.clusteredtableC.mappingtableD.partitionedtable
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The CUSTOMERS table has these columns:CUSTOMER_ID NUMBER(4) NOT NULLCUSTOMER_NAME VARCHAR2(100) NOT NULLSTREET_ADDRESS VARCHAR2(150)CITY_ADDRESS VARCHAR2(50)STATE_ADDRESS VARCHAR2(50)PROVINCE_ADDRESS VARCHAR2(50)COUNTRY_ADDRESS VARCHAR2(50)POSTAL_CODE VARCHAR2(12)CUSTOMER_PHONE VARCHAR2(20)The CUSTOMER_ID column is the primary key for the table.You need to determine how dispersed your customer base is. Which expression finds the number of different countries represented in the CUSTOMERS table?（）A.COUNT(UPPER(country_address))B.COUNT(DIFF(UPPER(country_address)))C.COUNT(UNIQUE(UPPER(country_address)))D.COUNT DISTINCT UPPER(country_address)E.COUNT(DISTINCT (UPPER(country_address)))
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下列字符型常量Hello,world!表示方法中，错误的是______。A．[Hello,world!]B．'Hello，wOrld!'C．Hello,world!，D．{Hello,world!}
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王先生国籍为中国，居住在美国，正确的填写方式为（）A．Country:American Nationality:ChinaB．Country: China Nationality:ChinaC．Country:American Nationality: AmericanD．Country: China Nationality: American
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1.王先生国籍为中国，居住在美国，正确的填写方式为（）A．Country:American Nationality:ChinaB．Country: China Nationality:ChinaC．Country:American Nationality: AmericanD．Country: China Nationality: American
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2、王先生国籍为中国，居住在美国，正确的填写方式为（）A．Country:American Nationality:ChinaB．Country: China Nationality:ChinaC．Country:American Nationality: AmericanD．Country: China Nationality: American
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请改正下面程序中存在的错误。 def StudentInfo（country='China', chineselevel='A', name): print（'%s,%s,%s'%（name,country,chineselevel)) StudentInfo（country='America', chineselevel='B', name='John')
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