Oracle11g数据库emp表（scott用户下）和employees表（hr用户下）建表语句

由于练习过程中经常误删表，所以记录一下建表语句，以便于重新建表：

scott.emp：

CREATE TABLE "SCOTT"."EMP" 
   (    "EMPNO" NUMBER(4,0), 
    "ENAME" VARCHAR2(10), 
    "JOB" VARCHAR2(9), 
    "MGR" NUMBER(4,0), 
    "HIREDATE" DATE, 
    "SAL" NUMBER(7,2), 
    "COMM" NUMBER(7,2), 
    "DEPTNO" NUMBER(2,0), 
     CONSTRAINT "PK_EMP" PRIMARY KEY ("EMPNO")
  USING INDEX PCTFREE 10 INITRANS 2 MAXTRANS 255 
  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
  TABLESPACE "USERS"  ENABLE, 
     CONSTRAINT "FK_DEPTNO" FOREIGN KEY ("DEPTNO")
      REFERENCES "SCOTT"."DEPT" ("DEPTNO") ENABLE
   ) SEGMENT CREATION IMMEDIATE 
  PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255 NOCOMPRESS LOGGING
  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
  TABLESPACE "USERS" ;
 
  CREATE UNIQUE INDEX "SCOTT"."PK_EMP" ON "SCOTT"."EMP" ("EMPNO") 
  PCTFREE 10 INITRANS 2 MAXTRANS 255 
  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
  TABLESPACE "USERS" ;
 
  ALTER TABLE "SCOTT"."EMP" ADD CONSTRAINT "PK_EMP" PRIMARY KEY ("EMPNO")
  USING INDEX PCTFREE 10 INITRANS 2 MAXTRANS 255 
  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
  TABLESPACE "USERS"  ENABLE;

hr.employees：

CREATE TABLE "HR"."EMPLOYEES" 
   (    "EMPLOYEE_ID" NUMBER(6,0), 
    "FIRST_NAME" VARCHAR2(20), 
    "LAST_NAME" VARCHAR2(25) CONSTRAINT "EMP_LAST_NAME_NN" NOT NULL ENABLE, 
    "EMAIL" VARCHAR2(25) CONSTRAINT "EMP_EMAIL_NN" NOT NULL ENABLE, 
    "PHONE_NUMBER" VARCHAR2(20), 
    "HIRE_DATE" DATE CONSTRAINT "EMP_HIRE_DATE_NN" NOT NULL ENABLE, 
    "JOB_ID" VARCHAR2(10) CONSTRAINT "EMP_JOB_NN" NOT NULL ENABLE, 
    "SALARY" NUMBER(8,2), 
    "COMMISSION_PCT" NUMBER(2,2), 
    "MANAGER_ID" NUMBER(6,0), 
    "DEPARTMENT_ID" NUMBER(4,0), 
     CONSTRAINT "EMP_SALARY_MIN" CHECK (salary > 0) ENABLE, 
     CONSTRAINT "EMP_EMAIL_UK" UNIQUE ("EMAIL")
  USING INDEX PCTFREE 10 INITRANS 2 MAXTRANS 255 NOLOGGING COMPUTE STATISTICS 
  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
  TABLESPACE "EXAMPLE"  ENABLE, 
     CONSTRAINT "EMP_EMP_ID_PK" PRIMARY KEY ("EMPLOYEE_ID")
  USING INDEX PCTFREE 10 INITRANS 2 MAXTRANS 255 NOLOGGING COMPUTE STATISTICS 
  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
  TABLESPACE "EXAMPLE"  ENABLE, 
     CONSTRAINT "EMP_MANAGER_FK" FOREIGN KEY ("MANAGER_ID")
      REFERENCES "HR"."EMPLOYEES" ("EMPLOYEE_ID") ENABLE, 
     CONSTRAINT "EMP_JOB_FK" FOREIGN KEY ("JOB_ID")
      REFERENCES "HR"."JOBS" ("JOB_ID") ENABLE, 
     CONSTRAINT "EMP_DEPT_FK" FOREIGN KEY ("DEPARTMENT_ID")
      REFERENCES "HR"."DEPARTMENTS" ("DEPARTMENT_ID") ENABLE
   ) SEGMENT CREATION IMMEDIATE 
  PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255 NOCOMPRESS NOLOGGING
  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
  TABLESPACE "EXAMPLE" ;
 
  CREATE UNIQUE INDEX "HR"."EMP_EMAIL_UK" ON "HR"."EMPLOYEES" ("EMAIL") 
  PCTFREE 10 INITRANS 2 MAXTRANS 255 NOLOGGING COMPUTE STATISTICS 
  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
  TABLESPACE "EXAMPLE" ;
 
  CREATE UNIQUE INDEX "HR"."EMP_EMP_ID_PK" ON "HR"."EMPLOYEES" ("EMPLOYEE_ID") 
  PCTFREE 10 INITRANS 2 MAXTRANS 255 NOLOGGING COMPUTE STATISTICS 
  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
  TABLESPACE "EXAMPLE" ;
 
  CREATE INDEX "HR"."EMP_DEPARTMENT_IX" ON "HR"."EMPLOYEES" ("DEPARTMENT_ID") 
  PCTFREE 10 INITRANS 2 MAXTRANS 255 NOLOGGING COMPUTE STATISTICS 
  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
  TABLESPACE "EXAMPLE" ;
 
  CREATE INDEX "HR"."EMP_JOB_IX" ON "HR"."EMPLOYEES" ("JOB_ID") 
  PCTFREE 10 INITRANS 2 MAXTRANS 255 NOLOGGING COMPUTE STATISTICS 
  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
  TABLESPACE "EXAMPLE" ;
 
  CREATE INDEX "HR"."EMP_MANAGER_IX" ON "HR"."EMPLOYEES" ("MANAGER_ID") 
  PCTFREE 10 INITRANS 2 MAXTRANS 255 NOLOGGING COMPUTE STATISTICS 
  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
  TABLESPACE "EXAMPLE" ;
 
  CREATE INDEX "HR"."EMP_NAME_IX" ON "HR"."EMPLOYEES" ("LAST_NAME", "FIRST_NAME") 
  PCTFREE 10 INITRANS 2 MAXTRANS 255 NOLOGGING COMPUTE STATISTICS 
  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
  TABLESPACE "EXAMPLE" ;
 
  ALTER TABLE "HR"."EMPLOYEES" MODIFY ("EMAIL" CONSTRAINT "EMP_EMAIL_NN" NOT NULL ENABLE);
 
  ALTER TABLE "HR"."EMPLOYEES" ADD CONSTRAINT "EMP_EMAIL_UK" UNIQUE ("EMAIL")
  USING INDEX PCTFREE 10 INITRANS 2 MAXTRANS 255 NOLOGGING COMPUTE STATISTICS 
  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
  TABLESPACE "EXAMPLE"  ENABLE;
 
  ALTER TABLE "HR"."EMPLOYEES" ADD CONSTRAINT "EMP_EMP_ID_PK" PRIMARY KEY ("EMPLOYEE_ID")
  USING INDEX PCTFREE 10 INITRANS 2 MAXTRANS 255 NOLOGGING COMPUTE STATISTICS 
  STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
  PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
  TABLESPACE "EXAMPLE"  ENABLE;
 
  ALTER TABLE "HR"."EMPLOYEES" MODIFY ("HIRE_DATE" CONSTRAINT "EMP_HIRE_DATE_NN" NOT NULL ENABLE);
 
  ALTER TABLE "HR"."EMPLOYEES" MODIFY ("JOB_ID" CONSTRAINT "EMP_JOB_NN" NOT NULL ENABLE);
 
  ALTER TABLE "HR"."EMPLOYEES" MODIFY ("LAST_NAME" CONSTRAINT "EMP_LAST_NAME_NN" NOT NULL ENABLE);
 
  ALTER TABLE "HR"."EMPLOYEES" ADD CONSTRAINT "EMP_SALARY_MIN" CHECK (salary > 0) ENABLE;
 
   COMMENT ON COLUMN "HR"."EMPLOYEES"."EMPLOYEE_ID" IS 'Primary key of employees table.';
 
   COMMENT ON COLUMN "HR"."EMPLOYEES"."FIRST_NAME" IS 'First name of the employee. A not null column.';
 
   COMMENT ON COLUMN "HR"."EMPLOYEES"."LAST_NAME" IS 'Last name of the employee. A not null column.';
 
   COMMENT ON COLUMN "HR"."EMPLOYEES"."EMAIL" IS 'Email id of the employee';
 
   COMMENT ON COLUMN "HR"."EMPLOYEES"."PHONE_NUMBER" IS 'Phone number of the employee; includes country code and area code';
 
   COMMENT ON COLUMN "HR"."EMPLOYEES"."HIRE_DATE" IS 'Date when the employee started on this job. A not null column.';
 
   COMMENT ON COLUMN "HR"."EMPLOYEES"."JOB_ID" IS 'Current job of the employee; foreign key to job_id column of the
jobs table. A not null column.';
 
   COMMENT ON COLUMN "HR"."EMPLOYEES"."SALARY" IS 'Monthly salary of the employee. Must be greater
than zero (enforced by constraint emp_salary_min)';
 
   COMMENT ON COLUMN "HR"."EMPLOYEES"."COMMISSION_PCT" IS 'Commission percentage of the employee; Only employees in sales
department elgible for commission percentage';
 
   COMMENT ON COLUMN "HR"."EMPLOYEES"."MANAGER_ID" IS 'Manager id of the employee; has same domain as manager_id in
departments table. Foreign key to employee_id column of employees table.
(useful for reflexive joins and CONNECT BY query)';
 
   COMMENT ON COLUMN "HR"."EMPLOYEES"."DEPARTMENT_ID" IS 'Department id where employee works; foreign key to department_id
column of the departments table';
 
   COMMENT ON TABLE "HR"."EMPLOYEES"  IS 'employees table. Contains 107 rows. References with departments,
jobs, job_history tables. Contains a self reference.';
 
  GRANT SELECT, REFERENCES ON "HR"."EMPLOYEES" TO "OE";