Solved

SQL - Update Query with Case Condition

Posted on 2011-02-16
16
446 Views
Last Modified: 2012-05-11
SQL 2008 / 2005

I am trying to update a Column with Conditions :- If the Column Value has 9 digits, then Add 2 Zeros on its Prefix, If the Column Value has 8 digits, then Add 3 zeros on its Prefix.

This is an Update Query, - I am not sure, how to fix this issue.

0
Comment
Question by:chokka
  • 6
  • 4
  • 3
  • +3
16 Comments
 
LVL 26

Expert Comment

by:Shaun Kline
ID: 34908896
If you use the Right command, you can achieve what you want:
RIGHT('000000000' + <field>, 9)

If you need to limit it to just fields with 8 or 9 digits, use a where clause that filters for values with lengths of 8 or 9.
0
 
LVL 23

Expert Comment

by:Rajkumar Gs
ID: 34908912
If the column is of integer datatype, try this query with cast
UPDATE YourTable
SET YourColumn = REPLICATE('0', 11 - LEN(CAST(YourColumn AS VARCHAR))) + CAST(YourColumn AS VARCHAR)
0
 

Author Comment

by:chokka
ID: 34908923


Name of the Table : BalanceReport

Name of the Column : NDC Varchar(50)
0
 
LVL 13

Expert Comment

by:devlab2012
ID: 34908930
It will make the length 9 characters by appending zeros in the beginning.

update TblName set colName = right('000000000' + colName, 9)

It will work if you colName if of varchar type, you cannot prefix zeros in the numeric types
0
 
LVL 23

Expert Comment

by:Rajkumar Gs
ID: 34908934
REPLICATE will repeats the '0' so that total 11 characters will be there in result.
0
 
LVL 1

Expert Comment

by:Andrei74
ID: 34908939
Something like that:  
update mytable  
 set prefix = case LEN(prefix)
                        when 9 then '00' + prefix
                        when 8 then '000' + prefix
                    end
0
 
LVL 23

Expert Comment

by:Rajkumar Gs
ID: 34908955
For VARCHAR Column, no need of that CASTing. Try this query
UPDATE YourTable
SET YourColumn = REPLICATE('0', 11 - LEN(YourColumn)) + YourColumn
0
 

Author Comment

by:chokka
ID: 34908980
Rajkumar and Devlab :-

In my Query, i need a condition whether total number of digits are 8 or 9

Based on that i need to add prefix zeros.

total number of digits in that column should be 11.
0
Better Security Awareness With Threat Intelligence

See how one of the leading financial services organizations uses Recorded Future as part of a holistic threat intelligence program to promote security awareness and proactively and efficiently identify threats.

 
LVL 8

Expert Comment

by:rushShah
ID: 34909005

update BalanceReport
set NDC =case when len(NDC)=9 then '00' + NDC  when len(NDC )=8 then '000' + NDC

Open in new window

0
 
LVL 23

Expert Comment

by:Rajkumar Gs
ID: 34909007
Updated my query

UPDATE BalanceReport
SET NDC = REPLICATE('0', 11 - LEN(NDC)) + NDC
WHERE LEN(NDC) IN (8, 9)


create table #BalanceReport
(
	NDC varchar(50)
)

insert into #BalanceReport
select '12' union
select '1' union
select '12345' union
select '12345678'

UPDATE #BalanceReport
SET NDC = REPLICATE('0', 11 - LEN(NDC)) + NDC 
WHERE LEN(NDC) IN (8, 9)

select * from #BalanceReport

drop table #BalanceReport

Open in new window

0
 
LVL 8

Accepted Solution

by:
rushShah earned 500 total points
ID: 34909008
sorry try this,


update BalanceReport
set NDC =case when len(NDC)=9 then '00' + NDC  when len(NDC )=8 then '000' + NDC end

Open in new window

0
 

Author Comment

by:chokka
ID: 34909123
rushshah,

Thank you.

There is a small correction, i request your help in the Case Statement.

Some Columns already have 11 digits, in that scenario - we need to ignore.
Now the Case Condition runs all the Columns irrespective whether they have 7 or 8 or 9 or 10 or 11 digits.

If they have 7, we need to add 4 zeros
if they have 11, we dont want any zeros.

From your case condition, i am able to modify 7,8,9,10 length.
But for 11 digit length .. ?
0
 
LVL 23

Expert Comment

by:Rajkumar Gs
ID: 34909160
chokka:
Did you try my query - http:#34909007 ?
0
 

Author Comment

by:chokka
ID: 34909191
Rajkumar, Thank you for helping me.

I have not tried your query. Reason is that i - I am also concerned about QUery Performance.

In your query, you are creating a Temp Table and then Inserting .. Query Cost Estimation would be high.

0
 
LVL 23

Expert Comment

by:Rajkumar Gs
ID: 34909253
Oh man. That was for demonstrating purpose only
I was trying to show you how this query works with sample data
You need to query that I posted first in that comment alone.

Any way - Nice to see you got the solution.
Raj
0
 
LVL 8

Expert Comment

by:rushShah
ID: 34913256
hi chokka,

you can add different length case statements, for length=11, you don't need to add any condition as we don't need to update,

you can try like this,

you can also try Rajkumar's query which does the same thing in better readable format.
update BalanceReport
set NDC =case when len(NDC)=10 then '0' + NDC when len(NDC)=9 then '00' + NDC when len(NDC)=8 then '000' + NDC  when len(NDC )=7 then '0000' + NDC   when len(NDC )=6 then '00000' + NDC end

Open in new window

0

Featured Post

Free Trending Threat Insights Every Day

Enhance your security with threat intelligence from the web. Get trending threat insights on hackers, exploits, and suspicious IP addresses delivered to your inbox with our free Cyber Daily.

Join & Write a Comment

Suggested Solutions

Title # Comments Views Activity
t-sql money data type decimal places 4 28
SQL 2012 and SQL 2014 in memory database 11 32
Sql query for filter 12 24
SQL Query 2 0
APEX (Application Express) is used to develop a web application from Oracle. SQL Workshop is one of the tools that comes with Oracle APEX to query or modify the database objects or to make any changes to the structure.
Using SQL Scripts we can save all the SQL queries as files that we use very frequently on our database later point of time. This is one of the feature present under SQL Workshop in Oracle Application Express.
Video by: Steve
Using examples as well as descriptions, step through each of the common simple join types, explaining differences in syntax, differences in expected outputs and showing how the queries run along with the actual outputs based upon a simple set of dem…
Polish reports in Access so they look terrific. Take yourself to another level. Equations, Back Color, Alternate Back Color. Write easy VBA Code. Tighten space to use less pages. Launch report from a menu, considering criteria only when it is filled…

744 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

Need Help in Real-Time?

Connect with top rated Experts

12 Experts available now in Live!

Get 1:1 Help Now