Remembering that it is good to "get back to basics" every now and then

  • Sean Lange (8/7/2013)


    An INSTEAD OF trigger can definitely result in [highlight="#ffff11"]@@rowcount being different to SELECT count(x) FROM[/highlight] ...

    Same result changing this to an instead of trigger.

    Yes, you get @@rowcount = 1.

    The OP's original situation was that they wanted to know how many rows in the table.

    In your test case the table contains zero rows (using the instead of trigger).

    ...but @@rowcount returns 1.

    My point here is that if you need to know how many rows are in the table, you had better count them, not rely on a function that could be telling you something other than the obvious. 😛

    drop table RowCountTest;

    go

    create table RowCountTest

    (

    id int

    )

    go

    create trigger RowCountTestTrigger on RowCountTest

    instead of insert as

    select top 1000 *

    into #Something

    from syscolumns

    go

    insert RowCountTest

    select 1

    select @@ROWCOUNT

    select count(*)

    from RowCountTest

    MM



    select geometry::STGeomFromWKB(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