为什么我的表在运行此事务后才设置为只读

Question

I ran the transaction below because I wanted to insert values from a table called RoughworkIndirectFlights into a table called RoughworkPriceTable.

This transaction did not work . However after running it the RoughworkPriceTable has become set to Read Only.

Can anyone explain why this has happened and how can I change the table to become editable.

SET IDENTITY_INSERT dbo.RoughworkPriceTable ON;

    Declare @TransactionName varchar(50) = 'MergeTransaction';
    Begin Tran @TransactionName

    Merge RoughworkPriceTable AS p
    Using RoughworkIndirectFlights As i
    On p.ID = i.ID
    When Matched Then Update 
                      Set p.Airport_ICAO_Code=i.Airport_ICAO_Code,
                          p.Airline_ICAO_Code=i.Airline_ICAO_Code,
                          p.RouteStatus=i.RouteStatus
    When Not Matched By Target Then Insert(ID,Airport_ICAO_Code,Airline_ICAO_Code,RouteStatus)
                                    Values(i.ID,i.Airport_ICAO_Code,i.Airline_ICAO_Code,i.RouteStatus)
                                    Output $action, Inserted.*,Deleted.*;

Answer 1

It seems that only ID column is read-only and I believe that ID column is an Identity column in your table. If that's the case then this behavior is expected. As the value of Identity column is auto-incremented and you can't set the value of that, that's why that ID column is read-only. I hope you are able to change the value in other columns.