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SQL 10g Reference


Free download from Oracle and end to end SQL reference guide. I can just say that it is a bible for SQL.


CLICK HERE FOR ORACLE 10G SQL REFERENCE --DOWNLOAD PDF

CLICK HERE FOR SQL, PL/SQL, and SQL*Plus Syntax and Examples -- ONLINE REFERENCE



Comments

Gowrishankar Gc said…
Dear mithun,
I am Gowrishankar one of ur student in QSpiders.. M not able to attend the tuesday class as i told yesturday M GOING TO SUBMIT MY PROJECT REPRT to my guid so kindly send me the tuesday meterial to my mail...my mail id is..
gowrishankar.gc@gmail.com
Rmaniganda said…
i couldn't install database in my pc, changed compatibility , even run as administrator.


"while installing i got abnormal program termination. an internal error has occurred. please provide the following to oracle support:
unknown
unknown
unknown."
shashank said…
hello sir,
oracle initialization or shutdown in progress is the error its showing when i tried to login . please help me with this.
sheik suheb said…
hello sir,
"while installing i got abnormal program termination. an internal error has occurred. please provide the following to oracle support:
unknown
unknown
unknown."
Dhiraj said…
Dear Sir, Please share your real experience in the class of company as - how database works,and how to develop new database....
Arif Sindagikar said…
Hi Sir please help in this.
I have a table with date format'YYYYMMDD' i want to retrieve only data for present date, whenever i run that view, it should show only data for present date,

Pls reply it will be great help arif.sindagikar@gmail.com

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SQL Interview Questions on Subqueries

SUB Queries:
1. List the employees working in research department 2. List employees who are located in New York and Chicago
3. Display the department name in which ANALYSTS are working
4. Display employees who are reporting to JONES
5. Display all the employees who are reporting to Jones Manager
6. Display all the managers in SALES and ACCOUNTING department
7. Display all the employee names in Research and Sales Department who are having at least 1 person reporting to them
8. Display all employees who do not have any reportees
9. List employees who are having at least 2 reporting
10. List the department names which are having more than 5 employees
11. List department name having at-least 3 salesman
12. List employees from research and accounting having at-least 2 reporting
13. Display second max salary
14. Display 4th max salary
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'Linux-x86_64 Error: 28: No space left on device' While trying to start the database -- Error

SQL> startup mount pfile='/tmp/initdlfasp12.ora'
ORA-27102: out of memory
Linux-x86_64 Error: 28: No space left on device


This as you can see is on Linux x86 with 64 bit processor. We got this error after we changed SGA on 10gR2 database. So was sure that this is something to do with the OS.

Parameters to check for this are shmall.

shmall is the total amount of shared memory, in pages, that the system can use at one time.

$cat /proc/sys/kernel/shmmax
53687091200

$ getconf PAGE_SIZE
4096

As per Oracle SHMALL should be set to the total amount of physical RAM divided by page size.

Our system has 64GB memory, so change kernel.shmall = 1024 * 1024 * 1024 * 64 / 4096 = 16777216


Once this value is calculated you can modify Linux system configuration file directly.

$ su - root
vi /etc/sysctl.conf file:
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and

# sysctl -p

Once this is done the database was started without any problem.

Answers for SUB Queries

1. SQL> select empno, ename from emp where deptno=(select deptno from dept where dname='RESEARCH');


2. SQL> select empno, ename from emp where deptno in (select deptno from dept where loc in ('NEW YORK','CHICAGO'));

3. SQL> select dname from dept where deptno in ( select deptno from emp where job ='ANALYST');

4. SQL> select empno, ename, mgr from emp where mgr = (select empno from emp where ename='JONES');

5. SQL> select empno, ename, mgr from emp where mgr = (select mgr from emp where ename='JONES')

6. SQL> select empno, ename, job from emp where deptno in ( select deptno from dept where dname in ('SALES','ACCOUNTING'))

7. SQL> select empno, ename, job from emp where deptno in ( select deptno from dept where dname in ('SALES','RESEARCH')) and empno in (select mgr from emp)

8. SQL> select empno, ename from emp where empno not in ( select mgr from emp where mgr is not null)

9. select…