单选题Which of the following statements eliminates all but one of each set of duplicate rows in the DEPT column in the STAFF table?（）ASELECT UNIQUE dept FROM staffBSELECT DISTINCT dept FROM staffCSELECT (dept) UNIQUE FROM staffDSELECT (dept) DISTINCT FROM staff
单选题
Which of the following statements eliminates all but one of each set of duplicate rows in the DEPT column in the STAFF table?（）
A
SELECT UNIQUE dept FROM staff
B
SELECT DISTINCT dept FROM staff
C
SELECT (dept) UNIQUE FROM staff
D
SELECT (dept) DISTINCT FROM staff
参考解析
解析：
暂无解析
相关考题：
Which one of the following is not an acquisition method?A advertisingB invitationC negotiationD purchaseE all are acquisition methods
Which of the following statements is true? Accounts payable are ______.A．debts owed to suppliersB．related to purchases of goods on an open accountC．current liabilitiesD．all of the above
Which of the following statements eliminates all but one of each set of duplicate rows in the DEPT column in the STAFF table?() A.SELECT UNIQUE dept FROM staffB.SELECT DISTINCT dept FROM staffC.SELECT (dept) UNIQUE FROM staffD.SELECT (dept) DISTINCT FROM staff
Which of the following statements is used to revoke all DML privileges on table EMPLOYEE from user TOM?() A.REVOKE ALL PRIVILEGES FROM USER tomB.REVOKE ALL ON EMPLOYEE FROM USER tomC.REVOKE EXECUTE ON EMPLOYEE FROM USER tomD.REVOKE PRIVILEGES ON EMPLOYEE FROM USER tom
Which of the following options is NOT one of the Key Objectives of NSN Smart Labs?() A.Should benefit all involved companies.B.Attract public interest.C.Invite Competition.D.Open for all developers and all operators.
For the following statements， which one is perceived as a drawback of implementing Fibre ChannelAuthentication Protocol （FCAP）？（）A、It is restricted in size to only three segmentsB、It requires the use of netBT as the network protocolC、It requires the implementation of IKED、It relies on an underlying Public Key Infrastructure
which one of the following statements would lee include in an agent to limit the documents processed by the agent to those for which the value of the type field is "action"? （）A、FIELD Type :="action" B、SELECT Type ="action" C、SELECT Type :="action " D、@if (type="action";@success;@failure)
which one of the following best where layer can be used?（）A、form B、page C、subform D、all of the above
Your database is up and running and one of your three control files is accidentally erased. You start RMAN and run the following command： RESTORE CONTROLFILE FROM AUTOBACKUP； Which of the following statements is true？（） A、 The command restores only the missing control file.B、 The command restores all the control files.C、 The command fails because the database is running.D、 This is the correct way to address this problem.E、 This is not the correct way to address this problem.
Several @functions can execute multiple statements. Which one of the following initializes a variable and can increment in during the operation?（）A、 @do B、 @for C、 @while D、 @dowhile
Which of the following statements is false？（）A、There can be more than one master catalog for a storeB、A sales catalog is a subset of the master catalogC、The master catalog is the central place for the stores merchandiseD、There can be more than one sales catalog for a storeE、Multiple stores can share a master catalog
Which of the following statements eliminates all but one of each set of duplicate rows in the DEPT column in the STAFF table?（）A、SELECT UNIQUE dept FROM staffB、SELECT DISTINCT dept FROM staffC、SELECT (dept) UNIQUE FROM staffD、SELECT (dept) DISTINCT FROM staff
Which one of the following @Function to all "response"and "response to response"documents of parent documents?（）A、@Responses B、@AllChildren C、@AllResponses D、@AllDescendants
Which of the following statements is used to revoke all DML privileges on table EMPLOYEE from user TOM?（）A、REVOKE ALL PRIVILEGES FROM USER tomB、REVOKE ALL ON EMPLOYEE FROM USER tomC、REVOKE EXECUTE ON EMPLOYEE FROM USER tomD、REVOKE PRIVILEGES ON EMPLOYEE FROM USER tom
Which one of the following BEST describes Long Term File System (LTFS)?（）A、eliminates dependence of middleware layer B、provides the ability to partition the library C、makes tape look and work like any removable media D、provides up to 48% lower power consumption in idle mode
多选题If p and q are primes greater than 2, which of the following statements must be true? (Indicate all such statements.)Ap + q is evenBpq is oddCp2-q2 is even
多选题Concerning the figure below, if a =b, which of the following statements must be true? (Indicate all such statements.)Ac=dBl and k are parallelCm and l are perpendicular
多选题Your database is up and running and one of your three control files is accidentally erased. You start RMAN and run the following command： RESTORE CONTROLFILE FROM AUTOBACKUP； Which of the following statements is true？（）AThe command restores only the missing control file.BThe command restores all the control files.CThe command fails because the database is running.DThis is the correct way to address this problem.EThis is not the correct way to address this problem.
多选题Which of the following statements are true? (Indicate all such statements.)Aτ(5) =τ(7)Bτ(5) τ(7) =τ(35)Cτ(5) + τ(7) =τ(12)
单选题Several @functions can execute multiple statements. Which one of the following initializes a variable and can increment in during the operation?（）A @do B @for C @while D @dowhile
多选题For Question 1, consider each of the choices separately and select all that apply. Which of the following statements about Edison can be inferred from the passage?AEdison was one of the world’s most esteemed and influential inventors.BConcrete furniture was the only one of Edison’s inventions to ultimately fail.CThe light bulb and the phonograph were extremely successful inventions by Edison.
单选题For the following statements， which one is the strongest symmetrical encryption algorithm？（）AAESB3DESCDESDDiffie-Hellman
单选题Which of the following statements is not true?AHenry Ford influenced our lives.BHenry Ford influenced historians.CHenry Ford influenced all manufacturing.
单选题Which of the following options is NOT one of the Key Objectives of NSN Smart Labs?（）AShould benefit all involved companies.BAttract public interest.CInvite Competition.DOpen for all developers and all operators.
单选题The author cites the dog as an example of artificial selection because of all the following statements EXCEPT that ______.ADogs are domestic animalsBThe dog is one of nature’s survivorsCBreeders register dogs to obtain a pedigreeDHumans have been the primary agents in dog evolution
单选题which one of the following statements would lee include in an agent to limit the documents processed by the agent to those for which the value of the type field is "action"? （）AFIELD Type :=action BSELECT Type =action CSELECT Type :=action D@if (type=action;@success;@failure)
单选题Only one of the following statements is true, according to what was said. Which one is it?AThe approaches of the three researchers are quite different.BThe three researchers’ approaches are all based on detecting imperfections in the print quality of documents.COld-school forensic scientists were unable to trace documents to particular typewriters based on quirks of the individual keys.DThe researchers from Purdue believe the perfect pieces of engineering leave unique patterns of banding in their products.
单选题Which of the following statements is INCORRECT?AGenerally speaking, almost all of the clerks get along well with their colleagues.BIt’s impossible to oppress one’s bad temper while being passionate on one’s work.CPeople tend to get angry at work in many situations.DPeople in companies welcome rage.