database query problem

Question

5.00/5 (1 vote)

See more:

i select data from 4 table and data is like that:

(invoice_id) (ino) (block) (Tax) (itemno) (ivalue) (total)
---------- -- ---- --- ------ ------ -----
101 1 false 3 5 121 125
101 1 false 4 5 121 125

problem is that only tax is repeat then all value is twice so, i want all null value of second row value except tax value.

Here is the query to get the above result

SQL

select  distinct tInvoice.*,tChallanMaster.ChallanNo as newChallanNo,SY001.dbo.tCustomer.CustomerName,SY001.dbo.tInvoiceTypeMaster.InvoiceTypeName,tInvoiceAmountDetails.*,tInvoiceTypeDetails.*,SY001.dbo.tItems.Description,SY001.dbo.tPer.PerName,SY001.dbo.tCompany.companyNametoDisplay,SY001.dbo.tCompany.FirstLine,SY001.dbo.tCompany.SecondLine,SY001.dbo.tCompany.CompanyLogo,SY001.dbo.tCompany.TaxDetails from tInvoice left join SY001.dbo.tCustomer on tInvoice.CustomerId=SY001.dbo.tCustomer.CustomerNo left join SY001.dbo.tInvoiceTypeMaster on tInvoice.InvoiceTpye=SY001.dbo.tInvoiceTypeMaster.InvoiceTypeNo left join tInvoiceAmountDetails on tInvoice.InvoiceId =tInvoiceAmountDetails.InvoiceId left join tInvoiceTaxDetails on tInvoice.InvoiceId=tInvoiceTaxDetails.InvoiceId left join tInvoiceTypeDetails on tInvoice.InvoiceId =tInvoiceTypeDetails.InvoiceId  left join SY001.dbo.tItems on tInvoiceTypeDetails.ItemId=SY001.dbo.tItems.ItemNo  left join SY001.dbo.tPer on tInvoiceTypeDetails.Unit=SY001.dbo.tPer.PerNo left join SY001.dbo.tCompany on tInvoice.CompanyId=SY001.dbo.tCompany.CompanyId left join tChallanMaster on tInvoice.InvoiceId =tChallanMaster.InvoiceNo where tInvoice.InvoiceId=10

Posted 24-Aug-12 3:04am

Member 9120792

Updated 24-Aug-12 3:36am

__TR__

v4

Add a Solution

Comments

ridoy 24-Aug-12 9:09am

then update those values with null by checking if they are same..

__TR__ 24-Aug-12 9:11am

Need more information. Post your query which gives the above result.

[no name] 24-Aug-12 9:14am

select distinct tInvoice.*,tChallanMaster.ChallanNo as newChallanNo,SY001.dbo.tCustomer.CustomerName,SY001.dbo.tInvoiceTypeMaster.InvoiceTypeName,tInvoiceAmountDetails.*,tInvoiceTypeDetails.*,SY001.dbo.tItems.Description,SY001.dbo.tPer.PerName,SY001.dbo.tCompany.companyNametoDisplay,SY001.dbo.tCompany.FirstLine,SY001.dbo.tCompany.SecondLine,SY001.dbo.tCompany.CompanyLogo,SY001.dbo.tCompany.TaxDetails from tInvoice left join SY001.dbo.tCustomer on tInvoice.CustomerId=SY001.dbo.tCustomer.CustomerNo left join SY001.dbo.tInvoiceTypeMaster on tInvoice.InvoiceTpye=SY001.dbo.tInvoiceTypeMaster.InvoiceTypeNo left join tInvoiceAmountDetails on tInvoice.InvoiceId =tInvoiceAmountDetails.InvoiceId left join tInvoiceTaxDetails on tInvoice.InvoiceId=tInvoiceTaxDetails.InvoiceId left join tInvoiceTypeDetails on tInvoice.InvoiceId =tInvoiceTypeDetails.InvoiceId left join SY001.dbo.tItems on tInvoiceTypeDetails.ItemId=SY001.dbo.tItems.ItemNo left join SY001.dbo.tPer on tInvoiceTypeDetails.Unit=SY001.dbo.tPer.PerNo left join SY001.dbo.tCompany on tInvoice.CompanyId=SY001.dbo.tCompany.CompanyId left join tChallanMaster on tInvoice.InvoiceId =tChallanMaster.InvoiceNo where tInvoice.InvoiceId=10

Philip Stuyck 24-Aug-12 12:04pm

It might be usefull to also post the result you really want.

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)

Christian Graus · Answer 1 · 2012-08-24T03:11:00

Solution 1

Why do you want this ? If you're iterating over the data, just remember the last one you read in, and keep grouping until it changes.

Posted 24-Aug-12 3:11am

Christian Graus

Wendelius · Answer 2 · 2012-08-24T11:19:00

In my opinion, typically if you need to use the keyword DISTINCT, there's something wrong with either the query or the database design. Using DISTINCT should be a rare case and well justified.

Without knowing the design, the data or the requirements, I would suggest you go through the model and invesigate that it properly satisfies the requirements and is well normalized.

One typical problem is that if the 3rd normal form isn't met, the need to use distinct arises in several use-cases. For more information, please see Third normal form[^]