Solved

How do you capture empty strings, null values and zero assigned records?

Posted on 2008-10-06
9
227 Views
Last Modified: 2010-03-19
Hi I am trying to write a script that simply will look into a table and count the number of records it has containing null values, empty string values, or zero assigned values.

How do I achieve this in one script?

I started with the below script and ended with this, but I still don't get the results returned correctly, in the sense that blank records are not being returned.
SELECT Count(BUSINESS.ACCT.ACCT_INTRL_ID) FROM BUSINESS.ACCT HAVING (((Count(BUSINESS.ACCT.ACCT_INTRL_ID)) Is Null));
 
SELECT Count(BUSINESS.ACCT.ACCT_INTRL_ID) FROM BUSINESS.ACCT HAVING (((Count(BUSINESS.ACCT.ACCT_INTRL_ID)) =''));

Open in new window

0
Comment
Question by:jperez484
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 6
  • 3
9 Comments
 
LVL 60

Expert Comment

by:Kevin Cross
ID: 22656315
COUNT and other aggregates typically optimize out NULL's.  Think this is what you are looking for.  You will have to see what the datatype of the column is as typically a string will not be 0 but could be '0' so I am assuming that in the code below.
SELECT SUM(CASE WHEN IsNull(BUSINESS.ACCT.ACCT_INTRL_ID,'') IN ('','0') THEN 1 ELSE 0 END) AS CountEmptyIntrlID
FROM BUSINESS.ACCT

Open in new window

0
 

Author Comment

by:jperez484
ID: 22656358
I see what your code is trying to do but I get the following error return:


Error starting at line 1 in command:
SELECT SUM(CASE WHEN IsNull(BUSINESS.ACCT.ACCT_INTRL_ID,'') IN ('','0') THEN 1 ELSE 0 END) AS CountEmptyIntrlID
FROM BUSINESS.ACCT
Error at Command Line:1 Column:21
Error report:
SQL Error: ORA-00904: "ISNULL": invalid identifier
0
 
LVL 60

Expert Comment

by:Kevin Cross
ID: 22656386
Is this Oracle?  My syntax was for MS SQL Server.
0
Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 60

Expert Comment

by:Kevin Cross
ID: 22656389
I am not the greatest at Oracle, but NVL should be the equivalent to T-SQL ISNULL:
SELECT SUM(CASE WHEN NVL(BUSINESS.ACCT.ACCT_INTRL_ID,'') IN ('','0') THEN 1 ELSE 0 END) AS CountEmptyIntrlID
FROM BUSINESS.ACCT

Open in new window

0
 

Author Comment

by:jperez484
ID: 22656434
I am getting no return for this script, so it must not be capturing the empty -blank records, as I know the data record has empty records in the table.  You mentioned you were handling the 0 as '0' can this be the effect? And yes, Its actually for both environment Oracle SQL developer and Microsoft, sorry for the confusion.


0
 
LVL 60

Expert Comment

by:Kevin Cross
ID: 22656505
What is the data type and some sample data of the records you are trying to capture in the count.  It could possibly be ' ' versus empty string or something else.  Please advise.
0
 
LVL 60

Accepted Solution

by:
Kevin Cross earned 500 total points
ID: 22656552
Think it is my syntax is still too much on the MS SQL side -- try this:
SELECT SUM(CASE WHEN NVL(TRIM(BUSINESS.ACCT.ACCT_INTRL_ID),'') = '' OR BUSINESS.ACCT.ACCT_INTRL_ID = '0' THEN 1 ELSE 0 END) AS CountEmptyIntrlID
FROM BUSINESS.ACCT

Open in new window

0
 

Author Comment

by:jperez484
ID: 22656676
Great!, this time it worked,  thank you for solving this dilemma for me!
0
 
LVL 60

Expert Comment

by:Kevin Cross
ID: 22656686
No problem.

You are welcome.
0

Featured Post

Space-Age Communications Transitions to DevOps

ViaSat, a global provider of satellite and wireless communications, securely connects businesses, governments, and organizations to the Internet. Learn how ViaSat’s Network Solutions Engineer, drove the transition from a traditional network support to a DevOps-centric model.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Ever wondered why sometimes your SQL Server is slow or unresponsive with connections spiking up but by the time you go in, all is well? The following article will show you how to install and configure a SQL job that will send you email alerts includ…
In the first part of this tutorial we will cover the prerequisites for installing SQL Server vNext on Linux.
This video shows, step by step, how to configure Oracle Heterogeneous Services via the Generic Gateway Agent in order to make a connection from an Oracle session and access a remote SQL Server database table.
Using examples as well as descriptions, and references to Books Online, show the documentation available for datatypes, explain the available data types and show how data can be passed into and out of variables.

739 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question