单选题
发布日期:2020-04-10
There is no row with dept_id 90 in the EMPLOYEES table.
You cannot delete the JOB_ID column because it is a NOT NULL column.
You cannot specify column names in the DELETE clause of the DELETE statement.
You cannot delete the EMPLOYEE_ID column because it is the primary key of the table.
题王网让考试变得更简单
扫码关注题王,更多免费功能准备上线!
此试题出现在
其他考试
Passengers can begin to earn Miles _____.
患者男,50岁,因“上腹隐痛不适,食欲减退3个月”来诊。体重50kg。实验室检查:Hb80g/L,血浆清蛋白30g/L,血清钠130mmol/L,钾4.5mmol/L,动脉血pH7.35。胃镜:胃体癌。按血清钠浓度和公式计算需补充的钠盐量(mmol/L)为()
乐乐不小心或无意中碰疼了别的小朋友的时候,能主动道歉,说明乐乐是一个有()的幼儿。
纳税人提出调整定额必须是经营收入变化超过()。
出租或使用的建筑起重机械应有特种设备()以及检测合格证明、定期检测记录等资料。
关于持续性房颤,下列叙述不正确的是()。
简述资本原始积累的实质。
排水沟的施工应符合的规定有()。
乔戈里峰是世界第二高峰,也是国际登山界公认的八千米以上攀登难度最大的山峰,它位于我国()境内。
Fireworks MX 2004提供了()种热点工具。
暂无相关推荐~
Examine the data of the EMPLOYEES table. EMPLOYEES (EMPLOYEE_ID is the primary k...
Examine the data in the EMPLOYEES table. On the EMPLOYEES table, EMPLOYEE_ID is ...
Examine the data in the EMPLOYEES table. EMPLOYEES EMP_NAME DEPT_ID MGR_ID JOB_I...
Examine the data of the EMPLOYEES table. EMPLOYEES (EMPLOYEE_ID is the primary k...
Examine the data of the EMPLOYEES table. EMPLOYEES (EMPLOYEE_ID is the primary k...
Examine the data in the EMPLOYEES and DEPARTMENTS tables: Also examine the SQL s...
Examine the data in the EMPLOYEES and DEPARTMENTS tables. EMPLOYEES LAST_NAME DE...
Examine the data in the EMPLOYEES and EMP_HIST tables: EMPLOYEES NAME DEPT_ID MG...
Exhibit Examine the data in the EMPLOYEES and DEPARTMENTS tables. You want to re...
Examine the data in the EMPLOYEES and DEPARTMENTS tables: EMPLOYEES EMP_NAME DEP...