GeekInterview.com
  I am new, Sign me up!
 
GeekInterview.com  >  Tech FAQs  >  PL/SQL
Go To First  |  Previous Question  |  Next Question 
 PL/SQL  |  Question 160 of 166    Print  
Find null value in a table
What are all the different ways available to find the null value in a table


  
Total Answers and Comments: 2 Last Update: October 05, 2009     Asked by: kthy86 
  
 Sponsored Links

 
 Best Rated Answer

No best answer available. Please pick the good answer available or submit your answer.
May 27, 2009 07:35:00   #1  
lokesh.sharma Member Since: May 2009   Contribution: 1    

RE: Find null value in a table
You can find null values (basically column value) as -

SELECT col_nm
FROM table_nm
WHERE col_nm IS NULL;

 
Is this answer useful? Yes | No
October 05, 2009 12:33:39   #2  
dineshchaini Member Since: August 2006   Contribution: 7    

RE: Find null value in a table

NULL values are not using any assignment operator So you need to compare them IS NULL e.g.

Select * from emp where comm is NULL;


 
Is this answer useful? Yes | No

 Related Questions

not known yet 
Latest Answer : The wrap utility takes a readable, ASCII text file as input and converts it to a file containing byte code.  The result is that the DBA, developers or anyone with database access cannot view the source code in any readable format.  ...
Read Answers (6) | Asked by : abhishek

What is cursor? Explain the types of cursor and write one implicit cursor program to check how many records deleted from table?
Read Answers (6) | Asked by : indranil

In PL/SQL I need to get like this scenario. if I am doing manipulation on a table, I need to display a record as Non-Updateable. It need to show a message to the user. How it is possible.Thanks in Advance.
Read Answers (7) | Asked by : murthy

Hi, in Cursors this is the Scenario.if i am manipulating the data of a table which has 10 records,i need to go to the 5th record.how is it possible?What is the Exact usage of Ref Cursor?
Read Answers (1) | Asked by : murthy

How can we find the status (enabled/disable) of the trigger and the user who changed the status in SQL-Server.Many thanks.
Read Answers (2) | Asked by : Shahid

Latest Answer : Hi,Use the V$OPEN_CURSOR view to know how many cursors are currently open in the database.Guna Sagar Challa  ...
Read Answers (1) | Asked by : Amitava

Latest Answer : Yes you can pass the whole select statement of the cursor dynamicaly, see ref_cursors.There is also a system package sys.dbms_sql which allows everything to make dynamically. ...
Read Answers (5) | Asked by : sweety

Hello,I need some info, that is it possible to find or make query ,that if we know the data stored in a table but don't know the field name in which the required data is stored.ExampleTable having fields like columnA, columnB, columnC, columnD,..........columnN and all have the same dataType. and you dont know in which field your data exists.suppose some data like e.g. "BackMan" exists in any Field of the table but we don't know in which Field this information is store.Is it

Latest Answer : First create a Trigger and with Procedure you insert records.The :new will take the new values.So use Triggers in Procedures. ...
Read Answers (1) | Asked by : p

Latest Answer : hi ,U can use the PRAGMA Function.I.e Autonomous Function to come back to normal stage in Mutating table. ...
Read Answers (1) | Asked by : ranjan


 Sponsored Links

 
Related Articles

ODP.NET - Populating a Dataset with a Single Data Table

ODP NET Populating a Dataset with a Single Data Table A dataset is simply a group of data tables These data tables can be identified with their own unique names within a dataset You can also add relations between data tables available in a dataset mosgoogle The following code gives you the details o
 

jQuery Table Row Finished Code

jQuery Table Row Finished Code The Finished Code Our second example page has demonstrated table row striping highlighting tooltips collapsing expanding and filtering Taken together the JavaScript code for this page is mosgoogle geshibot lang php" document ready function var highlighted
 

jQuery Expanding and Collapsing Table Rows

jQuery Expanding and Collapsing Table Rows The expanding and collapsing behavior added earlier also conflicts with our filters If a section is collapsed and a new filter is chosen then the matching items are displayed even if in the collapsed section Conversely if the table is filtered and a section
 

jQuery Table Row Filtering

jQuery Table Row Filtering Earlier we examined sorting and paging as techniques for helping users focus on relevant portions of a table s data We saw that both could be implemented either with server side technology or with JavaScript Filtering completes this arsenal of data arrangement strategies B
 

jQuery Collapsing and Expanding Table Rows

jQuery Collapsing and Expanding Table Rows When large sets of data are grouped in tables as each year s set of articles are in our News page collapsing or hiding a section s contents can be a convenient way to get a broad view of all of the table s data without having to scroll so much mosgoogle To
 

jQuery Table Manipulation

Learning jQuery Table Manipulation By Karl Swedberg Jonathan Chaffer Better Interaction Design and Web Development with Simple JavaScript Techniques Learning jQuery packtpub com jQuery book Table Manipulation Let em wear gaudy colors Or avoid display Devo Wiggly World" In the first si
 

SQL Table Commands

SQL Table Commands Overview As mentioned previously in this series of SQL articles, databases are primarily composed of tables. The “columns and rows” structure of the table allows data to be efficiently inserted, manipulated, updated, and deleted from the database. The three mos
 

Table space - Important concept of Database

Table space Important concept of Database Wondering what a Table space is Database is divided into one or more logical storage units known as table space The table space is created by database administrator After the table space gets created by administrator tables can be created by users in their
 

WebSphere V5.0 : Defining a table

WebSphere V5 0 Defining a table In this tutorial you will learn about WebSphere V5 0 Defining a table Steps to define a table in your database mosgoogle Tables are logical structures maintained by the database manager Tables are made up of columns and rows You can define tables as part of your data
 

Oracle Apps Table Registration API

Oracle Apps 11i Free Training Table Registration API This chapter provides you with information you need to register tables to be used in Oracle Alerts and Flexfields with Oracle Applications We will be learning about Procedures in the AD DD Package Procedure REGISTER TABLE Procedure REGISTER COLUMN
 

About Us -  Privacy Policy -  Terms and Conditions -  Contact -  Ask Question -  Propose Category -  Site Updates 

Copyright © 2005 - 2009 GeekInterview.com. All Rights Reserved

Page copy protected against web site content infringement by Copyscape