How to display all rows and all the columns of employee table?

ram

• Aug 8th, 2012

Select *from emp;
here * retriving all records from the db

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hi
I have to write a query to fetch 5 columns from the data. columns are title,description,msgs_count,alerts and severity.
msgs_count is count(title) over (partition by ) and alerts is sum(title partition by) over.

in case the duplicates of title are present in data. I want the title to come only once in the output but the msgs_count and alerts must not be affected. is it...

raghavender

• Oct 7th, 2012

Analytic functions are used to fetch all rows with the required aggregate data, if duplicates are needed, then you can use distinct or you can use group by clause instead of analytic functions which will have better performance.

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In what ways can data be copied from one table to another?

Neeraj Saxena

• Apr 12th, 2013

You can copy the data from one table to another with the help of below Query:

Suppose dummy is the main table and we need to copy the data from dummy_120413 table.

Create tabel dummy_120413 as Select * from dummy;

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What is a global temporary table?

Aijaz

• Oct 14th, 2012

Global temporary tables are the permanently created tables for a timed session.
Only the data in the table is temporary but the table is permanent in the Oracle database.

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What are the types of collection in PL/SQL? What is the advantage of nested tables?

pawan

• Nov 6th, 2012

Varrays,nested tables,index by tables are oracle collection.Index by tables also known as associative array similar to hashtables in java. Varrays are like arrays in java static in nature need to d...

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Can a type body be dropped without dropping the type specification?

ramya

• Oct 31st, 2012

When you drop a type body, the object type specification still exists, and you can re-create the type body. Prior to re-creating the body, you can still use the object type, although you cannot call the member functions.

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How can we find out the dependencies on a table?

srikanth goduru

• Oct 10th, 2012

Check the table dba_dependencies and see what other tables are affected.

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With what ways can we find out instance locks?

Jose George

• Oct 22nd, 2012

V$lock contains details of locks

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While testing a website, an image that is supposed to appear on a page does not load (for example in IE, you would see an empty box with a small red cross icon). What type of investigation could you carry out to find out what the cause of the problem is? What information would you include when raising the defect

harmeet rehal

• Oct 13th, 2014

Web testing is the name given to software testing that focuses on web applications. Complete testing of a web-based system before going live can help address issues before the system is revealed to th...

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Create a query using “ group by” that shows maximum salary for each department?

lviswanath

 Profile Answers by lviswanath Questions by lviswanath

• Jul 17th, 2013

Code
 

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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 ...

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How do you reference a (updated) table from procedure A which is being updated by another procedure B?

Lalit

• Sep 15th, 2013

By taking help of global temporary table.

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What is function purity level and why we need it in PL/SQL function?

chaitanya

• Sep 19th, 2014

Any function called from an sql query will have certain side effects on database state and package variables..these side effects are classified as purity levels. there are different purity levels like 1. read no database package state 2. write no database package state e.t.c

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sandeep

• Nov 22nd, 2014

This was used when you are going to use the cursor in more than one place with different values for the same where clause.

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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...

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Guys can you please help me in realtime scenario?

Abhijit Musale

• Feb 18th, 2015

Whenever you want to perform some operation on a set of result of rows , then we use the cursor.Cursor is nothing but a work space allocated on the memory. When u fire a query that set of rows is stored in the cursor temporarily.

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Abhijit Musale

• Feb 18th, 2015

To make the operations faster. When we need to do any operation on data like some calculations and when u need to fetch the data repetitively , in that case we can use the collections like PLSQL table.

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vivek

• Feb 23rd, 2016

1. Install ords.war (Download from Oracle site)
2. Configure Oracle rest data services. Using ords.war file. $ ords.war install advanced. (It will ask for database credentials)
3. Copy the images under i.war file.
4. Deploy the war files in weblogic.
5. Access the application

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Anjani Kumar

• Aug 9th, 2015

We can use oracle supplied package DBMS_HPROF(New in 11g) to see which procedure and inside that which sql is taking taking more time to execute.DBMS_HPROF Package profiles subprogram calls also with ...

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Create an anonymous PL/SQL block to enroll a student in a particular class. You will use the ENROLLMENTS table. Accept a STU_ID and CLASS_ID as input parameters. Use "today's date" for the ENROLLMENT_DATE and the string "Enrolled" for the STATUS.

Mohana Thangavelu

• Sep 9th, 2017

Begin
Insert into enrollments values(&stud_Id,&class_Id,sysdate);
Commit;
End;

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