Re: convert dds to ddl

[Gqcy <gmufasa01@xxxxxxxxx>]

My understanding was that I needed DDS Logicals to get the same format 
level id.
It appears that with 6.1 that isn't the case, in that DDL (SQL) defined 
files will have the same format id as the DDS physicals and logicals.

I have tested the "GENDDL" tool, and have proven that it will generate 
the SQL that matches the fmt ID of the DDS files.  So this means that I 
don't have to create logical files out of my old physicals.

-gerald






rob@xxxxxxxxx wrote:
> Not sure about this:
> <snip>
> I will create new SQL indexes prior to re-creating my old logicals.
> what else can/should I do to my logicals?
> </snip>
> Were you thinking about recreating your logicals in DDS, but first create 
> indexes?  I do not see a reason to use DDS to recreate your logicals.
>
> Some indexes you may not have but which may come in handy ...
> If you have select/omit logicals (which you can do just fine in DDS on 
> 6.1) like this
> CREATE INDEX ROB/gqcyl1
> ON ROB/GQCY 
> (MUVALUE) 
> WHERE RECID='A' 
>
> Then you may also want an index like this first
> CREATE INDEX ROB/gqcyl2
> ON ROB/GQCY 
> (recid, MUVALUE) 
>
> I think this will help performance of queries over the base table which do 
> something like
> SELECT ...
> FROM GQCY
> WHERE RECID='A'...
> And I think you want those created first.
>
>
> Rob Berendt