Sorry, I forgot the isc_info_end at the end of isc_info_sql_records,
which has 5 embedded cluster,

Cluster 1.5 is isc_info_end, which has no length nor value, simply 0x01.

jml

--- In firebird-support@yahoogroups.com, "Jeff Lynn" <jmlynn@...> wrote:
>
> So far, here is what I figured out by walking the cluster returned
> from isc_dsql_sql_info() on an update stmt:
>
> two serial clusters returned:
>
> First is isc_info_sql_records.
>
> Second is isc_info_end;
>
> the isc_info_sql_records clusters embedded with 4 clusters:
>
> Cluster 1.1 is isc_info_req_update_count, which imbedded count value
> 0x0001.
>
> Cluster 1.2 is isc_info_req_delete_count, which imbedded count value
> 0x0000.
>
> Cluster 1.3 is isc_info_req_select_count, which imbedded count value
> 0x0001.
>
> Cluster 1.4 is isc_info_req_insert_count, which imbedded count value
> 0x0000.
>
> The only stme executed is SQL update, why did the select return a
> count of 1?
>
> jml
>