单选题使用salary作为职工的工资列，若职工工资最高到千位，小数点后保留两位，则salary的数据类型应该是（）Anumeric（4，2）Bnumeric（6，2）Cmoney（4，2）Dmoney（6，2）
单选题
使用salary作为职工的工资列，若职工工资最高到千位，小数点后保留两位，则salary的数据类型应该是（）
A
numeric（4，2）
B
numeric（6，2）
C
money（4，2）
D
money（6，2）
参考解析
解析：
暂无解析
相关考题：
（ 1 ）有如下 2 个关系表Emp( eid ,ename,age,did,salary) ，其各列含义为：职工号，姓名，年龄，部门号，工资Dept( did ,dname,mgr_id) ，其各列含义为：部门号，部门名称，部门经理职工号写出一条 SQL 语句，查询工资大于 10000 ，且与他所在部门的经理年龄相同的职工姓名 。 （ 6 分）
建立一个视图salary，该视图包括了系号和(该系的)平均工资两个字段，正确的 SQL语句是A．CREATE VIEW salary AS系号，AVG(工资)AS平均工资FROM教师； GROUP BY系号B．CREATE VIEW salary AS SELECT系号,AVG(工资)AS平均工资FROM教师； GROUP BY系名C．CREATE VIEW salary SELECT系号,AVG(工资)AS平均工资FROM教师； GROUP BY系号D．CREATE VIEW salary AS SELECT系号,AVG(工资)AS平均工资FROM教师； GROUP BY系号
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
Examine the data in the EMPLOYEES table:Which three subqueries work? () A. SELECT * FROM employees where salary (SELECT MIN(salary) FROM employees GROUP BY department _ id);B. SELECT * FROM employees WHERE salary = (SELECT AVG(salary) FROM employees GROUP BY department _ id);C. SELECT distinct department_id FROM employees Where salary ANY (SELECT AVG(salary) FROM employees GROUP BY department _ id);D. SELECT department_id FROM employees WHERE SALARY ALL (SELECT AVG(salary) FROM employees GROUP BY department _ id);E. SELECT last_name FROM employees Where salary ANY (SELECT MAX(salary) FROM employees GROUP BY department _ id);F. SELECT department_id FROM employees WHERE salary ALL (SELECT AVG(salary) FROM employees GROUP BY ANG (SALARY));
对于第7题的两个基本表，有一个SQL语句： UPDATE EMP SET SALARY=SALARY*1.05 WHERE DNO='D6' AND SALARY＜(SELECT AVG(SALARY) FROM EMP);其等价的修改语句为______。A．为工资低于D6部门平均工资的所有职工加薪5%B．为工资低于整个企业平均工资的职工加薪5%C．为在D6部门工作、工资低于整个企业平均工资的职工加薪5%D．为在D6部门工作、工资低于本部门平均工资的职工加薪5%
以下两个关系表：Emp(eid，ename，age，did，salary)，其各列含义为：职工号，姓名，年龄，部门号，工资Dept(did，dname，mgr_id)，其各列含义为：部门号，部门名称，部门经理职工号写出一条SQL语句，查询工资大于10000，且与他所在部门的经理年龄相同的职工姓名。
● 设有职工表emp（Eno，Ename，Sex，Age）（Eno为职工号，Ename为职工姓名，Sex为性别，Age为年龄）和salary（Eno，Hour，Month，Wage）（Hour为工作时长为多少小时，Month表示几月份，Wage为薪水），建立一个视图V-Salary（Eno，Ename，Hour，Month，Wage），并按Eno升序排序的SQL语句为：（1）CREATE （ ）AS SELECT emp.Eno，emp.Ename ，salary.Hour，salary.Month，salary.WageFROM emp, salaryWHERE emp.Eno=salary.EnoORDER BY ENO在此视图上查均月工资在3000以上的职工工资情况的SQL语句为：SELECT Eno，Ename，AVG（Wage）FROM V-SalaryGROUP BY （ ）HAVING AVG(Wage)3000（ ）A. CREATE TABLE V-Salary（emp.Eno，emp.Ename，salary.Hour，salary.Month，salary.Wage）B. CREATE VIEW V-Salary（Eno，Ename，Hour，Month，Wage）C. CREATE TABLE V-Salary（Eno，Ename，Hour，Month，Wage）D. CREATE INDEX V-Salary（Eno，Ename，Hour，Month，Wage）（ ）A. Eno B.EnameC.Month D.Wage
建立一个视图salary,该视图包括了系号和(该系的)平钧工资两个字段,正确的是SQL语句是A）CREATE VIEW salaryAS系号，AVG（工资）AS平均工资FROM教师；GROUP BY系号B) CREATE VIEW salary AS SELECT系号，AVG(工资)AS平均工资FROM教师；GROUP BY系名C) CREATE VIEW salary SELECT系号，AVG(工资）AS平均工资FROM教师；GROUP BY系号D）CREATE VIEW salary AS SELECT系号，AVG（工资）As平均工资FROM教师；GROUP BY系号
SQL中，SALARYIN(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
建立一个视图salary，该视图包括了系号和(该系的)平均工资两个字段，正确的SQL语句是（ ）。A.CREATE vIEw salary AS系号．AVG(工资)AS平均工资FRM教师GRUP BY系号B.CREATE VIEW salary AS SELECT 系号，AVG(工 资)AS平均工资FROM教师GROUP BY系名C.CREATE VIEw salary SELECT 系号，AVG(工资)AS平均工资FRM教师 GRUP BY系号D.CREATE VIEW salary AS SELECT系号，AVG(工 资)AS平均工资FRM教师 GROUP BY系号
设有职工基本表：EMP(ENO，ENAME，AGE，SEX，SALARY)，其属性分别表示职工号、姓．名、年龄、性别、工资．为每个工资低于1800元的男职工加薪300元，试写出这个操作的SQL语句．
SELECT语句中使用（）子句来显示工资超过5000的员工。A、ORDER BY SALARY5000B、GROUP BY SALARY5000C、HAVING SALARY5000D、WHERE SALARY5000
类Teacher： class Teacher{ String name； float salary； Teacher（String name）{ this.name = name； } Teacher（String name，float salary）{ this.name = name； this.salary = salary； } } 执行语句Teacher t = new Teacher（“Tom”，2000.0f）；后，字段salary的值是哪一项？（） A、 2000.0fB、 0.0fC、 null；D、 2000
下面哪条语句可以取出薪水最高的前三个人：（）A、SELECT * FROM （SELECT * FROM EMPLOYEES ORDER BY SALARY ）；B、SELECT * FROM （SELECT * FROM EMPLOYEES ORDER BY SALARY ） WHERE ROWNUM=3；C、SELECT * FROM （SELECT * FROM EMPLOYEES ORDER BY SALARY DESC） WHERE ROWNUM=3；D、SELECT * FROM EMPLOYEES WHERE ROWNUM=3 ORDER BY SALARY DESC；
单选题Examine the description of the EMPLOYEES table: EMP_ID NUMBER(4) NOT NULL LAST_ NAME VARCHAR2(30) NOT NULL FIRST_NAME VARCHAR2(30) DEPT_ID NUMBER(2) JOB_CAT VARCHAR2(30) SALARY NUMBER(8,2) Which statement shows the department ID, minimum salary, and maximum salary paid in that department, only if the minimum salary is less than 5000 and maximum salary is more than 15000?（）ASELECT dept_id, MIN(salary), MAX(salary) FROM employees WHERE MIN(salary) 5000 AND MAX(salary) 15000;BSELECT dept_id, MIN(salary), MAX(salary) FROM employees WHERE MIN(salary) 5000 AND MAX(salary) 15000 GROUP BY dept_id;CSELECT dept_id, MIN(salary), MAX(salary) FROM employees HAVING MIN(salary) 5000 AND MAX(salary) 15000;DSELECT dept_id, MIN(salary), MAX(salary) FROM employees GROUP BY dept_id HAVING MIN(salary) 5000 AND MAX(salary) 15000;ESELECT dept_id, MIN(salary), MAX(salary) FROM employees GROUP BY dept_id, salary HAVING MIN(salary) 5000 AND MAX(salary) 15000;
多选题Examine the data in the EMPLOYEES table: Which three subqueries work? （）ASELECT * FROM employees where salary (SELECT MIN(salary) FROM employees GROUP BY department _ id);BSELECT * FROM employees WHERE salary = (SELECT AVG(salary) FROM employees GROUP BY department _ id);CSELECT distinct department_id FROM employees Where salary ANY (SELECT AVG(salary) FROM employees GROUP BY department _ id);DSELECT department_id FROM employees WHERE SALARY ALL (SELECT AVG(salary) FROM employees GROUP BY department _ id);ESELECT last_name FROM employees Where salary ANY (SELECT MAX(salary) FROM employees GROUP BY department _ id);FSELECT department_id FROM employees WHERE salary ALL (SELECT AVG(salary) FROM employees GROUP BY ANG (SALARY));
单选题类Teacher： class Teacher{ String name； float salary； Teacher（String name）{ this.name = name； } Teacher（String name，float salary）{ this.name = name； this.salary = salary； } } 执行语句Teacher t = new Teacher（“Tom”，2000.0f）；后，字段salary的值是哪一项？（）A 2000.0fB 0.0fC null；D 2000
单选题您在公司的数据库中成功创建了名为SALARY的表。您现在要通过向引用EMPLOYEES表的匹配列的SALARY表添加FOREIGNKEY约束条件来建立EMPLOYEES表与SALARY表之间的父/子关系。尚未向SALARY表添加任何数据。应执行以下哪条语句（）AALTER TABLE salary ADD CONSTRAINT fk_employee_id_01 FOREIGN KEY（employee_id）REFERENCES employees（employee_id）BALTER TABLE salary ADD CONSTRAINT fk_employee_id_ FOREIGN KEY BETWEEN salary（employee_id）AND employees（employee_id）CALTER TABLE salary FOREIGN KEY CONSTRAINT fk_employee_id_REFERENCES employees（employee_id）DALTER TABLE salary ADD CONSTRAINT fk_employee_id_FOREIGN KEY salary（employee_id）=employees（employee_id）
单选题客户需要计算EMP表中所有职工12*salary* commission_pct的值.EMP表结构如下：LAST NAME VARCNAR2（35）NOT NULL SALARY NUMBER（9，2）NOT NULL COMMISION_PCTNUMBER（4，2）哪个语句可以查询计算EMP表中所有职工行？（）ASELECT last_name，12*salary* commission_pct FROM empBSELECT last_name，12*salary*（commission_pct，0）FROM empCSELECT last_name，12*salary*（nvl（commission_pct，0））FROM emp如果oracle第一个参数为空那么显示第二个参数的值，如果第一个参数的值不为空，则显示第一个参数本来的值DSELECT last_name，12*salary*（decode（commission_pct，0））FROM emp
单选题Which SQL statement generates the alias Annual Salary for the calculated column SALARY*12?（）ASELECT ename, salary*12 ‘Annual Salary’ FROM employees;BSELECT ename, salary*12 “Annual Salary” FROM employees;CSELECT ename, salary*12 AS Annual Salary FROM employees;DSELECT ename, salary*12 AS INITCAP(“ANNUAL SALARY”) FROM employees
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?（）AORDER BY SALARY 5000BGROUP BY SALARY 5000CHAVING SALARY 5000DWHERE SALARY 5000
单选题删除视图salary的命令是（ ）。ADROP VIEW salaryBDROP salary VIEWCDELECT salaryDDELECT salary VIEW