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How to find a record change and raise a flag in T-SQL

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Last Modified: 2016-09-09
Hi Guys,

I have got a master table which contains the unique records, just like below

JobNo	   BookingStatusID
4363267	   2

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I have got a child table as below
JobNo      BookingStatusDescription      WebSupplierStatusID      WebSupplierStatusDescription      RevisionNo      SupplierID
4363267      Amended                                   2                                           Assigned                                             2                 4969
4363267      Confirmed                                   3                                           Rejected                                             1                  5202
4363267      Amended                                   4                                          Accepted                                             4                  4969
4363267      Amended                                   5                                          Error                                                      3                   4969

WIth in my T-SQL I want to figure out that if the supplier ID has been changed then raise some sort of Flag of 0 or 1. I don't want to use inline UDF as the data contains hundred of thousands of rows.

How do i achieve this. Please note i am using SQL Server 2014

regards
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