Abdul

• Oct 1st, 2016

We can use DBMS_job.isubmit procedure to schedule the job automatically..

Pran

• Jul 12th, 2016

I am trying this, but it says that procedure name is already exist.

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 A set of related declarations and procedural statements is called block.

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Answered by: Chandra Shekhar

• Oct 3rd, 2005

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PL/SQL Block contains :

Declare : optional

Variable declaration

Begin  : Manadatory

Procedural statements.

Exception : Optional

any errors to be trapped

End :  Mandatory

So only begin and end keywords are required, as needed, to process a pl/sql block.

vamsi

• Jun 8th, 2017

Cursors
collections
procedures
functions
triggers

Kevin Korir

• Dec 10th, 2016

Declare: optional
Begin:mandatory-program logic of SQL&plsql statements
Exception: optional (error handling)
End:mandatory
(Forward slash / terminates)

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adarh katiyar

• Jun 17th, 2017

Use PRAGMA AUTONOMOUS_TRANSACTION in trigger block,
issue never comes ...

Amit Bhardwaj

• Feb 9th, 2017

If you are trying to access or modify the triggering table into the same trigger and that too for a row level trigger then Mutating Trigger error occurred.

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krishnaindia2007  

 Profile Answers by krishnaindia2007 Questions by krishnaindia2007

• Member Since Sep-2007 | May 13th, 2008

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DUAL is a part data dictionary and owned by SYS. You should not make modifications to this   table. 
It contains only one row and  one column of VARCHAR2 datatype.
Used to refer an object which does not have any pysical reference in database table.
Ex:- Select sysdate from dual.

Aditya Kumar

• Dec 17th, 2017

If it contains only one column with varchar2 data type then how can it return a date through sysdate.

krishnaindia2007

 Profile Answers by krishnaindia2007 Questions by krishnaindia2007

• May 13th, 2008

DUAL is a part data dictionary and owned by SYS. You should not make modifications to this   table. It contains only one row and  one column of VARCHAR2 datatype.Used to refer an object which does not have any pysical reference in database table.Ex:- Select sysdate from dual.

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Explain what is Simple Cursor and What is Parameterized Cursor? And Difference between both??

sandeep

• Feb 1st, 2018

In real time we are using more than one cursor in PL/SQL block. so in this we are sending one cursor values into another cursor so the receiving cursor must be parameterised cursor

Akash Mohan singh

• Dec 26th, 2017

A parameterized cursor are static cursor that can accept passed in parameter values when they are opened. Parameterized can only reference to its own parameter parameterized cursor cannot reference to local variable.

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Shivam Softa

• Sep 19th, 2018

SELECT LISTAGG(VAL) WITHIN GROUP(ORDER BY LE) FROM
(select LEVEL LE , substr(SHIVAM,-LEVEL,1) VAL FROM DUAL CONNECT BY LEVEL

ushodaya

• May 20th, 2018

Declare
str1 varchar2(50):=&str;
str2 varchar2(50);
len number;
i number;

begin
len:=length(str1);

for i in reverse 1..len
loop
str2:=str2 || substr(str1,i,1);
end loop;

dbms_output.put_line(Reverse of String is:||str2);
end;
/

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 A FUNCTION is always returns a value using the return statement.        A  PROCEDURE   may  return one or more values through parameters or may not return at all.

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krishnaindia2007  

 Profile Answers by krishnaindia2007 Questions by krishnaindia2007

• Member Since Sep-2007 | May 3rd, 2008

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1. Function is mainly used in the case where it must return a value. Where as a procedure may or may not return a value or may return more than one value using the OUT parameter.
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2. Function can be called from SQL statements where as procedure can not be called from the sql statements

3. Functions are normally used for computations where as procedures are normally used for executing business logic.

4. You can have DML (insert,update, delete) statements in a function. But, you cannot call such a function in a SQL query.

5.?Function returns 1 value only. Procedure can return multiple values (max 1024).

6.Stored Procedure: supports deferred name resolution. Example while writing a stored procedure that uses table named tabl1 and tabl2 etc..but actually not exists in database is allowed only in during creation but runtime throws error Function wont support deferred name resolution.

7.Stored procedure returns always integer value by default zero. where as function return type could be scalar or table or table values

8. Stored procedure is precompiled execution plan where as functions are not.
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9.A procedure may modify an object where a function can only return a value The RETURN statement immediately completes the execution of a subprogram and returns control to the caller.

mahendra pal

• Sep 18th, 2018

Procedure may or may not return value

mangesh patil

• Aug 22nd, 2017

Procedure may or may not return value where as function should return one value.

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