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  3. March 2002

Re: delete orphaned records in SQL

Concatenation is great for a lot of things in SQL - building dates for
conversion, e.g., 'where in (select ...)' has to return a single 'column',
so it must be matched with a single column on the left, hence the
concatenation works.

Vern

At 02:27 PM 3/8/02 +0100, you wrote:

>Rick,
>
>what about the following (works from V4R3M0 upwards, lower versions maybe):
>
>      delete from detailfile where dkey1||dkey2 not in (select hkey1||hkey2
>from headerfile)
>
>HTH,
>
>Peter Colpaert
>Application Developer

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