SQL> set autotrace on explain
SQL>
SQL> create table emp
2 ( empno NUMBER(4) constraint E_PK primary key
3 , ename VARCHAR2(8)
4 , init VARCHAR2(5)
5 , job VARCHAR2(8)
6 , mgr NUMBER(4)
7 , bdate DATE
8 , sal NUMBER(6,2)
9 , comm NUMBER(6,2)
10 , deptno NUMBER(2) default 10
11 ) ;
Table created.
SQL> insert into emp values(1,'Tom','N', 'Coder', 13,date '1965-12-17', 800 , NULL, 20);
1 row created.
Execution Plan
----------------------------------------------------------
---------------------------------
| Id | Operation | Name |
---------------------------------
| 0 | INSERT STATEMENT | |
---------------------------------
Note
-----
- rule based optimizer used (consider using cbo)
SQL> insert into emp values(2,'Jack','JAM', 'Tester',6,date '1961-02-20', 1600, 300, 30);
1 row created.
Execution Plan
----------------------------------------------------------
---------------------------------
| Id | Operation | Name |
---------------------------------
| 0 | INSERT STATEMENT | |
---------------------------------
Note
-----
- rule based optimizer used (consider using cbo)
SQL> insert into emp values(3,'Wil','TF' , 'Tester',6,date '1962-02-22', 1250, 500, 30);
1 row created.
Execution Plan
----------------------------------------------------------
---------------------------------
| Id | Operation | Name |
---------------------------------
| 0 | INSERT STATEMENT | |
---------------------------------
Note
-----
- rule based optimizer used (consider using cbo)
SQL> insert into emp values(4,'Jane','JM', 'Designer', 9,date '1967-04-02', 2975, NULL, 20);
1 row created.
Execution Plan
----------------------------------------------------------
---------------------------------
| Id | Operation | Name |
---------------------------------
| 0 | INSERT STATEMENT | |
---------------------------------
Note
-----
- rule based optimizer used (consider using cbo)
SQL> insert into emp values(5,'Mary','P', 'Tester',6,date '1956-09-28', 1250, 1400, 30);
1 row created.
Execution Plan
----------------------------------------------------------
---------------------------------
| Id | Operation | Name |
---------------------------------
| 0 | INSERT STATEMENT | |
---------------------------------
Note
-----
- rule based optimizer used (consider using cbo)
SQL> insert into emp values(6,'Black','R', 'Designer', 9,date '1963-11-01', 2850, NULL, 30);
1 row created.
Execution Plan
----------------------------------------------------------
---------------------------------
| Id | Operation | Name |
---------------------------------
| 0 | INSERT STATEMENT | |
---------------------------------
Note
-----
- rule based optimizer used (consider using cbo)
SQL> insert into emp values(7,'Chris','AB', 'Designer', 9,date '1965-06-09', 2450, NULL, 10);
1 row created.
Execution Plan
----------------------------------------------------------
---------------------------------
| Id | Operation | Name |
---------------------------------
| 0 | INSERT STATEMENT | |
---------------------------------
Note
-----
- rule based optimizer used (consider using cbo)
SQL> insert into emp values(8,'Smart','SCJ', 'Coder', 4,date '1959-11-26', 3000, NULL, 20);
1 row created.
Execution Plan
----------------------------------------------------------
---------------------------------
| Id | Operation | Name |
---------------------------------
| 0 | INSERT STATEMENT | |
---------------------------------
Note
-----
- rule based optimizer used (consider using cbo)
SQL> insert into emp values(9,'Peter','CC', 'Designer',NULL,date '1952-11-17', 5000, NULL, 10);
1 row created.
Execution Plan
----------------------------------------------------------
---------------------------------
| Id | Operation | Name |
---------------------------------
| 0 | INSERT STATEMENT | |
---------------------------------
Note
-----
- rule based optimizer used (consider using cbo)
SQL> insert into emp values(10,'Take','JJ', 'Tester',6,date '1968-09-28', 1500, 0, 30);
1 row created.
Execution Plan
----------------------------------------------------------
---------------------------------
| Id | Operation | Name |
---------------------------------
| 0 | INSERT STATEMENT | |
---------------------------------
Note
-----
- rule based optimizer used (consider using cbo)
SQL> insert into emp values(11,'Ana','AA', 'Coder', 8,date '1966-12-30', 1100, NULL, 20);
1 row created.
Execution Plan
----------------------------------------------------------
---------------------------------
| Id | Operation | Name |
---------------------------------
| 0 | INSERT STATEMENT | |
---------------------------------
Note
-----
- rule based optimizer used (consider using cbo)
SQL> insert into emp values(12,'Jane','R', 'Manager', 6,date '1969-12-03', 800 , NULL, 30);
1 row created.
Execution Plan
----------------------------------------------------------
---------------------------------
| Id | Operation | Name |
---------------------------------
| 0 | INSERT STATEMENT | |
---------------------------------
Note
-----
- rule based optimizer used (consider using cbo)
SQL> insert into emp values(13,'Fake','MG', 'Coder', 4,date '1959-02-13', 3000, NULL, 20);
1 row created.
Execution Plan
----------------------------------------------------------
---------------------------------
| Id | Operation | Name |
---------------------------------
| 0 | INSERT STATEMENT | |
---------------------------------
Note
-----
- rule based optimizer used (consider using cbo)
SQL> insert into emp values(14,'Mike','TJA','Manager', 7,date '1962-01-23', 1300, NULL, 10);
1 row created.
Execution Plan
----------------------------------------------------------
---------------------------------
| Id | Operation | Name |
---------------------------------
| 0 | INSERT STATEMENT | |
---------------------------------
Note
-----
- rule based optimizer used (consider using cbo)
SQL>
SQL> set autotrace on
SQL>
SQL> select ename from emp where empno < 7500;
ENAME
--------
Tom
Jack
Wil
Jane
Mary
Black
Chris
Smart
Peter
Take
Ana
Jane
Fake
Mike
14 rows selected.
Execution Plan
----------------------------------------------------------
Plan hash value: 1482559701
--------------------------------------------
| Id | Operation | Name |
--------------------------------------------
| 0 | SELECT STATEMENT | |
| 1 | TABLE ACCESS BY INDEX ROWID| EMP |
|* 2 | INDEX RANGE SCAN | E_PK |
--------------------------------------------
Predicate Information (identified by operation id):
---------------------------------------------------
2 - access("EMPNO"<7500)
Note
-----
- rule based optimizer used (consider using cbo)
Statistics
----------------------------------------------------------
1 recursive calls
0 db block gets
4 consistent gets
0 physical reads
0 redo size
572 bytes sent via SQL*Net to client
380 bytes received via SQL*Net from client
2 SQL*Net roundtrips to/from client
0 sorts (memory)
0 sorts (disk)
14 rows processed
SQL>
SQL> set autotrace off
SQL>
SQL> drop table emp;
Table dropped.