FreeTDS Development Group

["Thompson, Bill D (London)" <ThompBil AT exchange.uk.ml.com>]

Hey freddy,

having introduced support for compute clauses, it is now possible for a
single sql statement to return multiple result sets, and rows of data
associated with any of these. So. If you executed the command:

select * from <table> 
order by <column>
compute sum(<column>) by <column>

You would get back from the server:

1) result info for the "regular" data
2) result info for the compute clause
3) regular data
4) compute data
5) regular data
6) compute data
...
n) end token

So we can no longer assume that each data row we process can be desribed by
what's in tds->res_info.
We have to associate each row either with tds->res_info or one of the
compute clause "res_info" structures.

tds-> curr_resinfo is just a pointer. It points to whichever "res_info"
structure is appropriate for the current data row. 


Bill   

> -----Original Message-----
> From: Frediano Ziglio [SMTP:freddyz77 AT tin.it]
> Sent: Saturday, October 26, 2002 1:30 PM
> To:   TDS Development Group
> Subject:      [freetds] curr_resinfo and res_info
> 
> With Bill patch we added a curr_resinfo. What're the differences from
> "old" res_info ? 
> 
> freddy77 
> 
> 
> 
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