Ok. Here's TABLE A

emp            date             hours       type
JSMITH       08-15-2005   5             WORK
JSMITH       08-15-2005   3             WORK
JSMITH       08-25-2005   6             WORK

I want to insert the ff:
1.) JSMITH    08-15-2005    8    VAC
2.) DOE        08-16-2005    8    VAC

#1 should fail because there is already 8 hours entered as being
Worked on 08-15-2005 (same date).

Any suggestions?



On 8/31/05, Ragnar Hafstað <[EMAIL PROTECTED]> wrote:
On Wed, 2005-08-31 at 11:49 -0400, Henry Ortega wrote:
> What I am trying to do is
> * Insert a record for EMPLOYEE A to TABLE A
> IF
> the sum of the hours worked by EMPLOYEE A on TABLE A
> is not equal to N
>
> Is this possible?

Sure, given a suitable schema

It is not clear to me, if the hours worked are
to be found in the same table you want to insert
into, or not.

gnari




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