How to update a customer with multiple values in another table data ?

Question

0.00/5 (No votes)

See more:

hi,
I have a table with these columns
[tableA]:
CID-CName-Month-DepositAmount-checkORcash-colB
101-James-March-null -null -bbbb

[tableB]:
CID-Month-DepositAmount-checkORcash
101-March-100.00 - cash
101-March-200.00 - cash
101-March-300.00 - cash
101-April-200.00 - cash
101-April-250.00 - check

here I would like to update the [tableA] DepositAmount, checkORcash with [tableB] DepositAmount, checkORcash.
Can you please help me how to update a [tableA]. I want to add all the DepositAmount, checkORcash values from [tableB] where month='March'

What I have tried:

declare @i int 
set @i = 1
while (@i <=  (select count(*) FROM [tableB] where Month='March' and CID=101) )
begin
 update [tableA] set DepositAmount = b.DepositAmount, checkORcash   = b.checkORcash
  From [tableB] b where month='March'        
set @i=@i+1
end
go

Posted 4-May-17 12:58pm

SJ87

Updated 4-May-17 21:17pm

Add a Solution

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

CHill60 · Answer 1 · 2017-05-04T13:16:00

If you ever think you need to use a loop with SQL then think again!

What you need is something like (untested)

SQL

update A set DepositAmount = b.DepositAmount, checkORcash   = b.checkORcash
from tableA A
left join tableB B on A.CID=B.CID
WHERE A.[month] = 'March'

Always remember that RDMS based databases (SQL databases) are "SET" based. You describe what you want to happen to a set of data, not a row at a time. This article (yes, it's mine) says everything I'm trying to say - Processing Loops in SQL Server[^]

jpadwale · Answer 2 · 2017-05-04T21:17:00

I think you don't want to update, you want to add all the march records from table B to A because there are multiple records with march .
Just modify your solution as,

if exists(select top 1 * FROM [tableB] where Month='March' )
begin

insert into [tableA] (CID,CName,Month,DepositAmount,checkORcash) select b.CID,(select name from [Customer_table] where id=b.CID),b.Month,b.DepositAmount,b.checkORcash from [tableB] b where Month='March'

end

AS I understand your question I provide the above solution,
let me know if issue is with solution.

How to update a customer with multiple values in another table data ?

2 solutions

Solution 1

Solution 2

Add your solution here

Preview 0