问题:单选题Which SQL statement accepts user input for the columns to be displayed, the table name, and WHERE condition? ()A SELECT 1, 2 FROM 3 WHERE last_name = '8';B SELECT 1, '2' FROM 3 WHERE ' last_name = '8';C SELECT 1, 2 FROM 3 WHERE last_name = '8';D SELECT...
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问题:单选题Evaluate the SQL statement:SELECT ROUND(45.953, -1), TRUNC(45.936, 2)FROM dual;Which values are displayed?()A 46 and 45B 46 and 45.93C 50 and 45.93D 50 and 45.9E 45 and 45.93F 45.95 and 45.93...
问题:Which two are character manipulation functions? ()...
问题:单选题Evaluate the SQL statement: SELECT ROUND(TRUNC(MOD(1600,10),-1),2) FROM dual; What will be displayed?()A 0B 1C 0.00D An error statement...
问题:You need to modify the STUDENTS table to add a primary key o...
问题:多选题Examine the description of the STUDENTS table: STD_ID NUMBER(4) COURSE_ID VARCHARD2(10) START_DATE DATE END_DATE DATE Which two aggregate functions are valid on the START_DATE column?()ASUM(start_date)BAVG(start_date)CCOUNT(start_date)DAVG(start_date, ...
问题:Evaluate the SQL statement DROP TABLE DEPT: Which four state...
问题:The EMP table contains these columns: EMPLOYEE_ID NUMBER(4)...
问题:单选题In which case would you use a FULL OUTER JOIN?()A Both tables have NULL values.B You want all unmatched data from one table.C You want all matched data from both tables.D You want all unmatched data from both tables.E One of the tables has more data th...
问题:The CUSTOMERS table has these columns: CUSTOMER_ID NUMBER(4)...
问题:Evaluate the SQL statement: 1 SELECT a.emp_name, a.sal, a.de...
问题:多选题Which two statements accurately describe a role? ()AA role can be given to a maximum of 1000 users.BA user can have access to a maximum of 10 roles.CA role can have a maximum of 100 privileges contained in it.DPrivileges are given to a role by using th...
问题:Which four are correct guidelines for naming database tables...
问题:Mary has a view called EMP_DEPT_LOC_VU that was created base...
问题:单选题The CUSTOMERS table has these columns: CUSTOMER_ID NUMBER(4) NOT NULL CUSTOMER_NAME VARCHAR2(100) NOT NULL STREET_ADDRESS VARCHAR2(150) CITY_ADDRESS VARCHAR2(50) STATE_ADDRESS VARCHAR2(50) PROVINCE_ADDRESS VARCHAR2(50) COUNTRY_ADDRESS VARCHAR2(50) POST...
问题:多选题Which four are types of functions available in SQL? ()AstringBcharacterCintegerDcalendarEnumericFtranslationGdateHconversion...
问题:Which substitution variable would you use if you want to reu...
问题:多选题Which two tasks can you perform using only the TO_CHAR function? ()Aconvert 10 to 'TEN'Bconvert '10' to 10Cconvert 10 to '10'Dconvert 'TEN' to 10Econvert a date to a character expressionFconvert a character expression to a date...
问题:单选题Evaluate these two SQL statements: SELECT last_name, salary , hire_date FROM EMPLOYEES ORDER BY salary DESC; SELECT last_name, salary , hire_date FROM EMPLOYEESORDER BY 2 DESC; What is true about them?()A The two statements produce identical results.B ...
问题:单选题What does the TRUNCATE statement do?()A Removes the tableB Removes all rows from a tableC Shortens the table to 10 rowsD Removes all columns from a tableE Removes foreign keys from a table...