Validating Field To Prevent From Accepting Bad data in SQL

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SQL-Server-2005

Hi ALL,

I need to know how to insert the column values into a table by validating some of the columns which is accepting a bad data.

For e.g., If I have a column called "MobileNo" and some one tries to insert the value that exceeds 10 digits in "MobileNo" field, then how to check for the validation(using IF-ELSE or whatever).

My Query(SP) is here:

VB

INSERT INTO dbo.FTA_ReportFileDumpNew

select A.MobileNo,A.CustomerName,A.Product,A.Suk_Type,A.FTR_Date,A.FTA_Date,
A.Sim_No,A.IMSI_No,A.Retailer_No,A.RetailerName,A.MacMobile_No,A.MacPrimary,
A.MacLocation,A.HUB,A.CombinedZone,A.TM_Name,A.TM_Number,A.RETAILER_SMS_DATE,
A.CUSTOMER_SMS_DATE,A.[TAT/Hrs],A.[TAT/Mins],A.MinuteWiseData,0,@UploadedBy,GETDATE()
FROM dbo.FTA_ReportFileDump A where exists
 (select 1 from FTA_ReportTbView B
 where A.MobileNo = B.MobileNo)

Any help or suggestion greatly appreciable.

Regards,

Raj

Posted 27-Jan-11 23:17pm

Raj.rcr

Updated 27-Jan-11 23:52pm

v3

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Sandeep Mewara · Answer 1 · 2011-01-28T00:01:00

Solution 1

Have a read on SQL Check Constraints! Read:
SQL CHECK Constraints[^]
SQL CHECK Constraint - 2[^]

Instead of having any logic in query to handle it, you can have check constraints in place and go ahead smoothly.
Other way would be to handle it in UI itself.

Posted 28-Jan-11 0:01am

Sandeep Mewara

Comments

Nithin Sundar 28-Jan-11 6:16am

Good Answer. That's useful! Never thought about it that way. :)

Raj.rcr 28-Jan-11 6:54am

But I already have some data in FTA_ReportFileDump table. So I cannot add the constraint as we are going to insert the data one by one.. Plzzz give me suggestion Using IF-Else Or Select Case for one or more fields.

Sandeep Mewara 28-Jan-11 8:33am

Whats the issue in this also. Even by 1-to-1 you can just go ahead. Write a script/code that does this for you, keep it in a try-catch in case it fails and just move ahead keeping a log.