suvijyo

• Feb 2nd, 2015

"c declare s1 char(10):=name; s2 varchar2(10):=name; begin if s1=s2 then dbms_output.put_line(both are equal); else dbms_output.put_line(both are equal); end if; dbms_ou...

chinnu

• Jan 27th, 2015

Char datatype is fixed,but it cant be reused. eq: char(10) -- elena,first 5 characters will be filled remaining field are padded.
varchar2 datatype fixed,but it can be reused. eq: varchar2(10) -- elena, first 5 characters will be filled and remaining fields are reused.

Answer Question  Select Best Answer

Write a query to retrieve one entire column data of multiple rows into one single column of single row?

hema nagaraju

• Dec 20th, 2014

SELECT listagg (ename, ,) within group( order by ename) FROM emp

Geet

• Dec 4th, 2014

Code
SELECT REPLACE(EMP_NAME , ,, ) "EMPLOYEE NAME"  
FROM (SELECT STRAGG(EMP_NAME) EMP_NAME 
FROM EMPLOYEE);

Answer Question  Select Best Answer

Hi ,can any one tel pls what is use ofprocedures and packages? why we use can anyone tell me with one real time example

HEMA NAGARAJU

• Dec 20th, 2014

Procedures are dataobjects which are stored in a database. We can define an operation in procedure and we call the procedure many times in the application. Packages are collection of subprograms, pro...

Answer Question  Select Best Answer

In Emp table there is a column which consists of gender (Male or Female) ? How should one

Can update the Values of Male to Female and Female to Male with a single query ?

sandeep

• Nov 22nd, 2014

I need to update in the table not to select can u guys show me how to change directly in the database

NARSIMHA

• Nov 13th, 2014

SELECT DECODE(GENDER,M,F,F,M,NULL) FROM EMP

Answer Question  Select Best Answer

I have 3 tables , same no of columns ,i want to insert whole the data from all these table into a single table,which also having same no of column and the same data type.

sateeshchandra

• Oct 14th, 2014

"sql INSERT ALL INTO suppliers (supplier_id, supplier_name) VALUES (1000, IBM) INTO suppliers (supplier_id, supplier_name) VALUES (2000, Microsoft) INTO customers (customer_i...

J. Ali (PL/Sql)

• Nov 29th, 2013

INSERT INTO DYMMY (VAL)
SELECT COLUMN_VALUE val FROM table (tab_contents_nt (1, 2, 3))
UNION ALL
SELECT COLUMN_VALUE val FROM table (tab_contents_nt (4, 5, 6))
UNION ALL
SELECT COLUMN_VALUE val FROM table (tab_contents_nt (7, 8, 9))

Answer Question  Select Best Answer

Raviteja

 Profile Answers by Raviteja Questions by Raviteja

• Aug 23rd, 2014

Instead of cursor is not there,, instead of trigger is used incase of complex views. when we use views with joins

Kumar

• Jul 25th, 2014

Its instead of trigger not cursor and it is used to apply trigger on views.

Answer Question  Select Best Answer

Procedure also written the values using out parameter than why we need functions?

Rakesh057

 Profile Answers by Rakesh057 Questions by Rakesh057

• Jul 1st, 2014

Because procedure is pre compiler and function is not pre compiler so that the reason we go for an calculation part in function

Madhav

• Jul 1st, 2014

Procedure also written in out parameter but we can not use procedure in Sql statement.

But if we wrote function and ita cant contain DML operation then we can access this function in SQL queries.

Answer Question  Select Best Answer

What is the main purpose of RETURN in functions when we can calculate a value and pass it through using OUT mode in procedure or functions?

Deepika S Verma

• Mar 14th, 2014

Its a myth that function returns value whereas procedure does not, actually procedure also return value (i.e. 0 or 1 ) at the time of exiting which indicates the success or error. Whereas Function ret...

shivigupta

 Profile Answers by shivigupta Questions by shivigupta

• Oct 9th, 2012

create or replace procedure proc1 as begin dbms_output.put_line(Before Return Clause); return; dbms_output.put_line(After Return Clause); end; set serveroutput on; begin proc1; dbms_output.put_line(I...

Answer Question  Select Best Answer

Pixie

• Feb 18th, 2014

PL/SQL tables are PL/SQLs way of providing arrays. They are temporary tables in memory and thus are processed very quickly. They are not database tables, and DML statements cannot be issued against...

sbagai2001

 Profile Answers by sbagai2001 Questions by sbagai2001

• May 30th, 2006

DECLARE   TYPE EmpCurTyp IS REF CURSOR;   // Reference Cursor - weak    TYPE NumList IS TABLE OF NUMBER;  // Table of Number   TYPE NameList IS TABLE OF VA...

Answer Question  Select Best Answer

What are bind variables in sql? explain in detail?

pradipta

 Profile Answers by pradipta Questions by pradipta

• Feb 8th, 2014

The way to get Oracle to reuse the execution plans for "the statements having different hard coded value in where clause" there should use bind variables. Bind variables are ?substitution? variable...

Aarti

• Jan 15th, 2014

Bind variable is session specific variable. It is declared using variable keyword. Bind variable cant be used in named block. It cant have default value.

Answer Question  Select Best Answer

Malar somu

 Profile Answers by Malar somu Questions by Malar somu

• Sep 10th, 2013

Implicit Cursor:- It is Oracle implicit type.. when we fetch only one record then we need to use implicit cursor i.e when ever we performing select query or any dml operations termed as implicit curso...

hira

• Aug 8th, 2013

When ever any query execute by the server in database sever itself create a implicit cursor ,which can not any control to the programmer but in case explicit cursor the programmer has to create it.and used for the data manipulation by following some rule......

Answer Question  Select Best Answer

Procedure A calls procedure B. A updates table t1, t2. B updates table t3. If some error happens to B what happens to the updates in all those tables? Whether they will rollback or commit? If commits how far it will commit?

vishal.bhadange

 Profile Answers by vishal.bhadange Questions by vishal.bhadange

• Aug 24th, 2013

CASE 1 (If you are not handling exception in Procedure B, none of the table gets updated) "sql PROCEDURE A BEGIN UPDATE TABLE t1; UPDATE TABLE t2; CALL PROCEDURE ...

Answer Question  Select Best Answer

JILEY SINGH

 Profile Answers by JILEY SINGH Questions by JILEY SINGH

• Aug 4th, 2013

Function can be called in select statement but procedure cant be called in select statement. function has return keyword but procedure not

Varun Tiwari

• Jul 4th, 2013

Function Procedure 1. Can be used as column Cant used in select statement in select statement 2. Can be used in where Cant used in where condition c...

Answer Question  Select Best Answer

Varun Tiwari

• Jul 4th, 2013

Any data transaction control statement can not be used in triggers. As trigger invokes due to any DML event and the transaction may not be successfully commit later and may need to complete rollback.

Pragma_autonomous can be used as an alternate way to commit.

prashant mhatre

• Jun 13th, 2013

Can not used ...if we want to use it inside the trigger then use pragma_autonomous.

Answer Question  Select Best Answer

Is it possible to use function inside a trigger.

tinku981

 Profile Answers by tinku981 Questions by tinku981

• Jun 16th, 2013

Code
CREATE OR REPLACE TRIGGER emp_trig
  before INSERT ON emp
  FOR each row
--referencing old as old and new as new
declare
  i pls_integer;
begin
  emp_pro;
  i := emp_func;
  dbms_output.put_line(TRIGGER called AND FUNCTION returned  || i);
 
end;
 

tinku981

 Profile Answers by tinku981 Questions by tinku981

• Jun 16th, 2013

Yes, by using CALL statement.

Answer Question  Select Best Answer

rayavarapu

 Profile Answers by rayavarapu Questions by rayavarapu

• Jan 23rd, 2013

Null is not a value and not a string. It is unknown it is maximum in descending order and minimum value in ascending order.

Sandeep

• Mar 7th, 2012

Char(0)

Answer Question  Select Best Answer

PRADEEP

• Oct 16th, 2012

Ref cursor is having return type where as cursor does not have .
syntax of ref cursor:- type ref_type_name is ref cursor [return return_type].

syntax of cursor:- declare
cursor cursor name select statement..

pradeep

• Jan 8th, 2012

Normal cursors do have a return type. ex:

Code
CREATE package pkg_test IS
cursor c1 RETURN emp%rowtype;
end pkg_test;
 
CREATE package body pkg_test IS
cursor c1 RETURN emp%rowtype IS SELECT * FROM emp WHERE empno = 10;
begin
FOR emp_cv IN c1 loop
..
end pkg_test;
 

Answer Question  Select Best Answer

HI all
table contain some 1000 records, today I inserted 100 records into table, so I want first 10 records data from 100 records
how can I retrieve

kapil joshi

• Sep 15th, 2012

Select * from employees where rownum

Manoj Kumar

• Aug 28th, 2012

Code
SELECT * FROM (SELECT * FROM emp ORDER BY <created_date> DESC) WHERE rownum <11

Answer Question  Select Best Answer

Vishal R Bhadange

• Aug 12th, 2012

Yes.
Yes we can truncate some of the rows from the table, But table should be partitioned & all the rows to be deleted should be present in one single partition...

leelakrishna302

 Profile Answers by leelakrishna302 Questions by leelakrishna302

• Jun 15th, 2012

We cannot

Answer Question  Select Best Answer

ChevyBlazer

 Profile Answers by ChevyBlazer Questions by ChevyBlazer

• Jul 2nd, 2012

The answer will be between 11-14 . You have to consider two extreme cases where 1. 3 rows with a=10 and 11 rows with b=20 are all distinct rows - then the answer will be 14 2. Where there are 11 rows...

Venkat

• Jun 30th, 2012

The accurate answer is "The result can contain max of 14 records", but this not guaranteed. It can be less also. (Minimum is 10 rows and maximum is 14 rows). It is because there can be some overlpa in the same row between "a" and "b" column.

Answer Question  Select Best Answer