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counting inserts/updates when doing a merge

When doing a merge statement we'd like to log the number of rows inserted and the number of rows updated.

At present we do this using 2 separate statements so we know from @@rowcount how many rows each one has operated on.

Is there anyway of getting the individual counts from a merge statement ?


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  • Posted on Oct 14, 2015 at 06:48 PM

    Interesting question. Here is one way I can think to do it:

    declare @minserts int, @mupdates int

    set @minserts = 0

    set @mupdates = 0

    merge into myhist as h

    using mytrans as t

    on h.pkey = t.pkey

    when matched then update set h.description = t.description, @mupdates = @mupdates + 1

    when not matched then insert (pkey,description) values (t.pkey,t.description)

    select @minserts = @@rowcount - @mupdates

    print "UPDATES: %1! INSERTS: %2!",@mupdates,@minserts

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