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单选题
Which clause would you use in a SELECT statement to limit the display to those employees whose salary is greater then 5000? （）
A
ORDER BY SALARY > 5000
B
GROUP BY SALARY > 5000
C
HAVING SALARY > 5000
D
WHERE SALARY > 5000
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In which four clauses can a subquery be used? ()
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Which clause would you use in a SELECT statement to limit the display to those employees whose salary is greater then 5000? ()
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In a SELECT statement that includes a WHERE clause, where is the GROUP BY clause placed in the SELECT statement? ()
A. Immediately after the SELECT clauseB. Before the WHERE clauseC. Before the FROM clauseD. After the ORDER BY clauseE. After the WHERE clause
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Exhibit:Examine the data in the EMPLOYEES table.Examine the subquery:SELECT last_nameFROM employeesWHERE salary IN (SELECT MAX(salary)FROM employeesGROUP BY department_id);Which statement is true?()
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The EMP table contains these columns:You need to display the employees who have not been assigned to any department.You write the SELECT statement:What is true about this SQL statement?()
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Click the Exhibit button and examine the data in the EMPLOYEES table.Examine the subquery:SELECT last_nameFROM employeesWHERE salary IN (SELECT MAX(salary)FROM employeesGROUP BY department_id);Which statement is true?（）A.The SELECT statement is syntactically accurate.B.The SELECT statement does not work because there is no HAVING clause.C.The SELECT statement does not work because the column specified in the GROUP BY clause is not in the SELECT list.D.The SELECT statement does not work because the GROUP BY clause should be in the main query and not in the subquery.
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In which four clauses can a subquery be used?（）A、in the INTO clause of an INSERT statementB、in the FROM clause of a SELECT statementC、in the GROUP BY clause of a SELECT statementD、in the WHERE clause of a SELECT statementE、in the SET clause of an UPDATE statementF、in the VALUES clause of an INSERT statement
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You would like to display the system date in the format "Monday, 01 June, 2001". Which SELECT statement should you use? （）A、SELECT TO_DATE(SYSDATE, 'FMDAY, DD Month, YYYY') FROM dual;B、SELECT TO_CHAR(SYSDATE, 'FMDD, DY Month, 'YYYY') FROM dual;C、SELECT TO_CHAR(SYSDATE, 'FMDay, DD Month, YYYY') FROM dual;D、SELECT TO_CHAR(SYSDATE, 'FMDY, DDD Month, YYYY') FROM dual;E、SELECT TO_DATE(SYSDATE, 'FMDY, DDD Month, YYYY') FROM dual;
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Which two are true about aggregate functions?（）A、You can use aggregate functions in any clause of a SELECT statement.B、You can use aggregate functions only in the column list of the select clause and in the WHERE clause of a SELECT statement.C、You can mix single row columns with aggregate functions in the column list of a SELECT statement by grouping on the single row columns.D、You can pass column names, expressions, constants, or functions as parameter to an aggregate function.E、You can use aggregate functions on a table, only by grouping the whole table as one single group.F、You cannot group the rows of a table by more than one column while using aggregate functions.
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Which two statements about views are true? （）A、A view can be created as read only.B、A view can be created as a join on two or more tables.C、A view cannot have an ORDER BY clause in the SELECT statement.D、A view cannot be created with a GROUP BY clause in the SELECT statement.E、A view must have aliases defined for the column names in the SELECT statement.
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From SQL*Plus, you issue this SELECT statement: SELECT* FROM order; You use this statement to retrieve data from a data table for （）.A、UpdatingB、ViewingC、DeletingD、InsertingE、Truncating
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Which two statements are true regarding the ORDER BY clause? （）A、It is executed first in the query execution B、It must be the last clause in the SELECT statement C、It cannot be used in a SELECT statement containing a HAVING clauseD、You cannot specify a column name followed by an expression in this clause E、You can specify a combination of numeric positions and column names in this clause
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Where can subqueries be used?（）A、field names in the SELECT statement B、the FROM clause in the SELECT statement C、the HAVING clause in the SELECT statementD、the GROUP BY clause in the SELECT statement E、the WHERE clause in only the SELECT statement F、the WHERE clause in SELECT as well as all DML statements
考题
In a SELECT statement that includes a WHERE clause, where is the GROUP BY clause placed in the SELECT statement?（）A、Immediately after the SELECT clauseB、Before the WHERE clauseC、Before the FROM clauseD、After the ORDER BY clauseE、After the WHERE clause
考题
单选题View the Exhibit and examine the structure of the ORDERS and ORDERJTEMS tables. Evaluate the following SQL statement： SELECT oi.order_id， product_jd， order_date FROM order_items oi JOIN orders o USING （order_id）； Which statement is true regarding the execution of this SQL statement？（）A
The statement would not execute because table aliases are not allowed in the JOIN clause.B
The statement would not execute because the table alias prefix is not used in the USING clause.C
The statement would not execute because all the columns in the SELECT clause are not prefixed with table aliases.D
The statement would not execute because the column part of the USING clause cannot have a qualifier in the SELECT list.
考题
多选题Which two statements about views are true?（）AA view can be created as read only.BA view can be created as a join on two or more tables.CA view cannot have an ORDER BY clause in the SELECT statement.DA view cannot be created with a GROUP BY clause in the SELECT statement.EA view must have aliases defined for the column names in the SELECT statement.
考题
单选题Which clause would you use in a SELECT statement to limit the display to those employees whose salary is greater then 5000?（）A
ORDER BY SALARY 5000B
GROUP BY SALARY 5000C
HAVING SALARY 5000D
WHERE SALARY 5000
考题
多选题In which four clauses can a subquery be used? （）Ain the INTO clause of an INSERT statementBin the FROM clause of a SELECT statementCin the GROUP BY clause of a SELECT statementDin the WHERE clause of a SELECT statementEin the SET clause of an UPDATE statementFin the VALUES clause of an INSERT statement
考题
多选题Which two are true about aggregate functions?（）AYou can use aggregate functions in any clause of a SELECT statement.BYou can use aggregate functions only in the column list of the select clause and in the WHERE clause of a SELECT statement.CYou can mix single row columns with aggregate functions in the column list of a SELECT statement by grouping on the single row columns.DYou can pass column names, expressions, constants, or functions as parameter to an aggregate function.EYou can use aggregate functions on a table, only by grouping the whole table as one single group.FYou cannot group the rows of a table by more than one column while using aggregate functions.
考题
单选题The EMP table contains these columns: LAST NAME VARCHAR2(25) SALARY NUMBER(6,2) DEPARTMENT_ID NUMBER(6) You need to display the employees who have not been assigned to any department. You write the SELECT statement: SELECT LAST_NAME, SALARY, DEPARTMENT_ID FROM EMP WHERE DEPARMENT_ID = NULL; What is true about this SQL statement?（）A
The SQL statement displays the desired results.B
The column in the WHERE clause should be changed to display the desired results.C
The operator in the WHERE clause should be changed to display the desired results.D
The WHERE clause should be changed to use an outer join to display the desired results.
考题
单选题The EMP table contains these columns: LAST_NAME VARCHAR2 (25) SALARY NUMBER (6,2) DEPARTMENT_ID NUMBER (6) You need to display the employees who have not been assigned to any department. You write the SELECT statement: SELECT LAST_NAME, SALARY, DEPARTMENT_ID FROM EMP WHERE DEPARTMENT_ID = NULL; What is true about this SQL statement ?（）A
The SQL statement displays the desired results.B
The column in the WHERE clause should be changed to display the desired results.C
The operator in the WHERE clause should be changed to display the desired results.D
The WHERE clause should be changed to use an outer join to display the desired results.
考题
多选题From SQL*Plus, you issue this SELECT statement: SELECT* FROM order; You use this statement to retrieve data from a data table for （）.AUpdatingBViewingCDeletingDInsertingETruncating
考题
单选题In a SELECT statement that includes a WHERE clause, where is the GROUP BY clause placed in the SELECT statement? （）A
Immediately after the SELECT clauseB
Before the WHERE clauseC
Before the FROM clauseD
After the ORDER BY clauseE
After the WHERE clause
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