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(emp_id,emp_name) (emp_id,emp_name,emp_phone,dept_name) (emp_name,emp_phone,dept_name) (emp_id,emp_name,emp_phone,dept_name,dept_phone)
BUILD EXE emp_sys FROM 职工 BUILD APP emp_syexe FROM 职工 LINK EXE emp_sys FROM职工 LINK APP emp_syexe FROM职工
BUILD EXE emp sys FROM 职工 BUILD APP emp syExe FROM职工 LINK EXE emp sys FROM职工 LINK APP emp syExe FROM职工
BUILD EXE emp sys FROM 职工 BUILD APP emp sys.Exe FROM职工 LINK EXE emp sys FROM职工 LINK APP emp sys.Exe FROM职工
在emp表上按salary升序创建了一个聚簇索引 在emp表上按salary降序创建了一个聚簇索引 在emp表上按salary升序创建了一个唯一索引 在emp表上按salary降序创建了一个唯一索引
BUILD EXE emp_sys FROM 职工 BUILD APP emp_sys.exe FROM 职工 LINK EXE emp_sys FROM职工 LINK APP emp_sys.exe FROM职工
are ; is are ; are is ; are is ;is
UPDATE EMP SET SALARY=SALARY+200 WHERE SALAEY<(SELECT AVG(SALARY)FROM EMP) AND SEX=’女’ UPDATE FROM EMP SET SALARY=200 WHERE SALAEY<(SELECT SUM(SALARY)FROM EMP)AND SEX=’女’ UPDATE EMP SET SALARY=200 WHERE SALAEY<(SELECT AVG(SALARY)FROM EMP)AND SEX=’女’ UPDATE FROM EMP SET SALARY=SALARY+200 WHERE SALAEY<(SELECT SUM(SALARY)FROM EMP)AND SEX=’女’
BUILD EXE emp_sys FROM 职工 BUILD APP emp_sys.exe FROM 职工 LINK EXE emp_sys FROM职工 LINK APP emp_sys.exe FROM职工
GRANT update on Emp TO LIU WITH CHECK OPTION GRANT update(empname) on Emp TO LIU WITH CHECK OPTION GRANT update on Emp TO LIU WITH GRANT OPTION GRANT update(empname) on Emp TO LIU WITH GRANT OPTION
从EMP中删除行('010','李金娜','01',1200) 在EMP中插入行('102','张敏','01',1500) 将EMP中雇员号='056'的工资改为1600元 将EMP中雇员号='101'的部门号改为'05'
BUILD EXE emp_sys FROM 职工 BUILD APP emp_sys.exe FROM 职工 LINK EXE emp_sys FROM职工 LINK APP emp_sys.exe FROM职工
are; is are; are is ; are is; is
EMP1(员工号,姓名,家庭住址) EMP2(部门,部门电话,部门负责人) EMP3(员工号,家庭成员,成员关系) EMP1(员工号,姓名,部门,家庭住址) EMP2(部门,部门电话,部门负责人) EMP3(员工号,家庭成员,成员关系) EMP1(员工号,姓名,家庭住址) EMP2(部门,部门电话,部门负责人,家庭成员,成员关系) EMP1(员工号,姓名,部门,部门电话,部门负责人,家庭住址) EMP2(员工号,家庭住址,家庭成员,成员关系)
EMP1(员工号,姓名,性别,家庭住址) EMP2(部门,部门电话,部门负责人) EMP3(员工号,家庭成员,成员关系) EMP1(员工号,姓名,性别,部门,家庭住址) EMP2(部门,部门电话,部门负责人) EMP3(员工号,家庭成员,成员关系) EMP1(员工号,姓名,性别,家庭住址) EMP2 (部门,部门电话,部门负责人,家庭成员,成员关系) EMP1(员工号,姓名,性别,部门,部门电话,部门负责人,家庭住址) EMP2(员工号,家庭住址,家庭成员,成员关系)
every the second line every other lines every a few lines every other line
certainly; every a few certain; every few sure; every a few surely; every few
ALTER TABLE emp ADD come Date ADD TABLE emp come Date ALTER TABLE emp come Date ADD come Date TABLE emp
UPDATE EMP SET SALARY=SALARY+200 WHERE SALAEY<(SELECT AVG(SALARY)FROM EMP) AND SEX=’女’ UPDATE FROM EMP SET SALARY=200 WHERE SALAEY<(SELECT SUM(SALARY)FROM EMP) AND SEX=’女’ UPDATEEMP SET SALARY=200 WHERE SALAEY<(SELECT AVG(SALARY)FROM EMP) AND SEX=’女’ UPDATE FROM EMP SET SALARY=SALARY+200 WHERE SALAEY<fSELECT SUM(SALARY)FROM EMP) AND SEX=’女’