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SQL中，“SALARY IN（1000，2000）”的语义是（)。
A．SALARY＜=2000 AND SALARY＞=1000
B．SALARY＜2000 AND SALARY＞1000
C．SALARY=1000 AND SALARY=2000
D．SALARY=1000 OR SALARY=2000
参考答案和解析
D
更多 “SQL中，“SALARY IN（1000，2000）”的语义是（)。A．SALARY＜=2000 AND SALARY＞=1000B．SALARY＜2000 AND SALARY＞1000C．SALARY=1000 AND SALARY=2000D．SALARY=1000 OR SALARY=2000” 相关考题
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SQL中，SALARYIN（1000，2000）的语义是（）A、SALARY≤2000ANDSALARY≥1000B、SALARY＜2000ANDSALARY＞1000C、SALARY＝1000ANDSALARY＝2000D、SALARY＝1000ORSALARY＝2000
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Evaluate the SQL statement: SELECT LPAD(salary,10,*) FROM EMP WHERE EMP_ID = 1001; If the employee with the EMP_ID 1001 has a salary of 17000, what is displayed?（）A、17000.00B、17000*****C、****170.00D、**17000.00E、an error statement
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Evaluate these two SQL statements: SELECT last_name, salary , hire_date FROM EMPLOYEES ORDER BY salary DESC; SELECT last_name, salary, hire_date FROM EMPLOYEES ORDER BY 2 DESC; What is true about them?（）A、The two statements produce identical results.B、The second statement returns a syntax error.C、There is no need to specify DESC because the results are sorted in descending order by default.D、The two statements can be made to produce identical results by adding a column alias for the salary column in the second SQL statement.
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Evaluate the SQL statement: SELECT LPAD (salary,10,*) FROM EMP WHERE EMP _ ID = 1001; If the employee with the EMP_ID 1001 has a salary of 17000, what is displayed?（）A、17000.00B、17000*****C、****170.00D、**17000.00E、an error statement
考题
单选题SQL中，SALARYIN（1000，2000）的语义是（）A
SALARY≤2000ANDSALARY≥1000B
SALARY＜2000ANDSALARY＞1000C
SALARY＝1000ANDSALARY＝2000D
SALARY＝1000ORSALARY＝2000
考题
单选题500~750千伏超高压输电的传输距离是（）千米，而特高压交直流输电可以将传输距离提升到（）千米。A
700~1000，2000~5000B
700~1000，2000~4000C
500~1000，2000~4000D
500~1000，2000~5000
考题
单选题Evaluate the SQL statement: SELECT LPAD(salary,10,*) FROM EMP WHERE EMP_ID = 1001; If the employee with the EMP_ID 1001 has a salary of 17000, what is displayed?（）A
17000.00B
17000*****C
****170.00D
**17000.00E
an error statement
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单选题Examine the structures of the EMPLOYEES and TAX tables. EMPLOYEES EMPLOYEE_ID NUMBER NOT NULL, Primary Key EMP_NAME VARCHAR2 (30) JOB_ID VARCHAR2 (20) SALARY NUMBER References MGR_ID NUMBER EMPLOYEE_ID column DEPARTMENT_ID NUMBER Foreign key to DEPARTMENT _ID column of the DEPARTMENT table TAX MIN_SALARY NUMBER MAX_SALARY NUMBER TAX_PERCENT NUMBER Percentage tax for given salary range You need to find the percentage tax applicable for each employee. Which SQL statement would you use?（）A
SELECT employee_id, salary, tax_percent FROM employees e, tax t WHERE e.salary BETWEEN t.min _ salary AND t.max_salaryB
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You cannot find the information because there is no common column between the two tables.
考题
单选题如果对关系emp（eno，ename，salary）成功执行下面的SQL语句：CREATECLUSTERINDEXname_indexONemp（salary），其结果是（）A
在emp表上按salary升序创建了一个聚簇索引B
在emp表上按salary降序创建了一个聚簇索引C
在emp表上按salary升序创建了一个唯一索引D
在emp表上按salary降序创建了一个唯一索引
考题
单选题Evaluate the SQL statement: SELECT LPAD(salary,10,*) FROM EMP WHERE EMP_ID = 1001; If the employee with the EMP_ID 1001 has a salary of 17000, what is displayed?（）A
17000.00B
17000*****C
****170.00D
**17000.00E
an error statement
考题
单选题Which SQL statement generates the alias Annual Salary for the calculated column SALARY*12?（）A
SELECT ename, salary*12 ‘Annual Salary’ FROM employees;B
SELECT ename, salary*12 “Annual Salary” FROM employees;C
SELECT ename, salary*12 AS Annual Salary FROM employees;D
SELECT ename, salary*12 AS INITCAP(“ANNUAL SALARY”) FROM employees
考题
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
The second statement returns a syntax error.C
There is no need to specify DESC because the results are sorted in descending order by default.D
The two statements can be made to produce identical results by adding a column alias for the salary column in the second SQL statement.
考题
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 EMPLOYEES ORDER BY 2 DESC; What is true about them?（）A
The two statements produce identical results.B
The second statement returns a syntax error.C
There is no need to specify DESC because the results are sorted in descending order by default.D
The two statements can be made to produce identical results by adding a column alias for the salary column in the second SQL statement.
考题
单选题Evaluate the SQL statement: SELECT LPAD (salary,10,*) FROM EMP WHERE EMP _ ID = 1001; If the employee with the EMP_ID 1001 has a salary of 17000, what is displayed?（）A
17000.00B
17000*****C
****170.00D
**17000.00E
an error statement
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