thanks, makes more sense now

On Tuesday, February 5, 2013 3:29:28 PM UTC-5, Charles Monteiro wrote:
>
> I've been battling to try to chain something together but I"m failing, I 
> have the following snippet of code from a stored proc function that I'm 
> porting:
>
> Delete from table1 a 
> where a.status <> 'O' 
> or exists (select b.contract_nbr 
> from contract b 
> where b.contract_date = a.contract_date 
> and b.contract_nbr  = a.contract_nbr 
> and b.contract_sfx  = a.contract_sfx 
> and ((b.status <> 'O') or 
> (b.orig_par = b.tba_Par_Allocated + b.tba_Par_Paired_Off + 
> b.tba_Par_Given_Up)) 
> ); 
>
> not sure at all how to chain up an "or exists"
>
> the where clause seems pretty straight ahead until the last and criteria 
> which is an or expression between a not equals clause and a second clause 
> which requires the summation of numeric fields who sum is to be compared to 
> a field in the second table.
>
> I get that I'm going to need to setup a join i.e. via Sequel since I don't 
> think that Sequel can specify it the same way the stored proc does.
>
> Help is greatly appreciated with the above code. Also in general I guess 
> I'm failing how to construct nested boolean queries such as demonstrated 
> above.
>
>
>

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