7900 James 950

7369 SMITH 800

7876 ADAMS 1100

7934 MILLER 1300

Q1_4a

scott@NINE.KAF29.MEPHI.RU> Insert into dept (deptno, Dname, loc)

Values(&department_number,'&department_nmae','&locacion');

Enter value for department_number: 88

Enter value for department_nmae: home

Enter value for locacion: Kashirka

old 2: Values(&department_number,'&department_nmae','&locacion')

new 2: Values(88,'home','Kashirka')

Q1_4b

scott@NINE.KAF29.MEPHI.RU> select * from &&table_name;

Enter value for table_name: dept –здесь введено значение для table_name

old 1: select * from &&table_name

new 1: select * from dept

DEPTNO DNAME LOC

---------- -------------- -------------

10 ACCOUNTING NEW YORK

20 RESEARCH DALLAS

30 SALES CHICAGO

40 OPERATIONS BOSTON

50 ttt fff

70 sss www

88 home Kashirka

7 Rows selected.

scott@NINE.KAF29.MEPHI.RU> select * from &&table_name; --здесь уже отсутствует

--приглашение для ввода значения table_name.

--Отсутствие такого приглашения обеспечивает двойная &

old 1: select * from &&table_name

new 1: select * from dept

DEPTNO DNAME LOC

---------- -------------- -------------

10 ACCOUNTING NEW YORK

20 RESEARCH DALLAS

30 SALES CHICAGO

40 OPERATIONS BOSTON

50 ttt fff

70 sss www

88 home Kashirka

7 Rows selected.

--как изменить значение для «table_name»

Q1_4c

scott@NINE.KAF29.MEPHI.RU> def table_name –def – сокращение от definition

DEFINE TABLE_NAME = "dept" (CHAR)

scott@NINE.KAF29.MEPHI.RU> DEFINE TABLE_NAME = "SALGRADE" (CHAR)

scott@NINE.KAF29.MEPHI.RU> select * from &&table_name;

old 1: select * from &&table_name

new 1: select * from SALGRADE

GRADE LOSAL HISAL

---------- ---------- ----------

1 700 1200

2 1201 1400

3 1401 2000

4 2001 3000

5 3001 9999

1.3. Выборка столбцов

Q1_5

Выборка всех столбцов из таблицы

SQL> select EMP.* from EMP;

EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO

--------- ---------- --------- --------- --------- --------- --------- ----------

7839 KING PRESIDENT 17-NOV-81 5000 10

7698 BLAKE MANAGER 7839 01-MAY-81 2850 30

7782 CLARK MANAGER 7839 09-JUN-81 2450 10

7566 JONES MANAGER 7839 02-APR-81 2975 20

7654 MARTIN SALESMAN 7698 28-SEP-81 1250 1400 30

7499 ALLEN SALESMAN 7698 20-FEB-81 1600 300 30

7844 TURNER SALESMAN 7698 08-SEP-81 1500 0 30

7900 JAMES CLERK 7698 03-DEC-81 950 30

7521 WARD SALESMAN 7698 22-FEB-81 1250 500 30

7902 FORD ANALYST 7566 03-DEC-81 3000 20

7369 SMITH CLERK 7902 17-DEC-80 800 20

7788 SCOTT ANALYST 7566 09-DEC-82 3000 20

7876 ADAMS CLERK 7788 12-JAN-83 1100 20

7934 MILLER CLERK 7782 23-JAN-82 1300 10

14 rows selected.

Q1_6

Использование арифметических выражений

Зарплата за 12 месяцев

SQL> select DEPTNO,sal*12,comm from EMP;

DEPTNO SAL*12 COMM

---------- --------- ---------

10 60000

30 34200

10 29400

20 35700

30 15000 1400

30 19200 300

30 18000 0

30 11400

30 15000 500

20 36000

20 9600

20 36000

20 13200

10 15600