Re: Maximum OBDC Query Size

Hi Richard,
The actual issue boils down to speed. Which is faster? A single select with
a large result set that is processed by the program or a bunch of selects
with a small result set. I chose the single select approach. It just seems
to me that it would be faster than 500 selects and 500 open cursor, close
cursor ect.


Spencer C Elliott


949-366-5234 X152 (O) l (949) 544-1237 (Skype)

Spencer@xxxxxxxxxxxxxx


www.s4isystems.com

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On Mon, Apr 8, 2019 at 7:42 AM Richard Schoen via MIDRANGE-L <
midrange-l@xxxxxxxxxxxxxxxxxx> wrote:

Yeah I realized that once I re-read the question 😊

Looks like what you've discovered should give you enough runway unless
you've had an issue with running your large statement.

One option to consider might be to call an RPG program that contains the
SQL and return a resultset for processing from the RPG app perhaps.

Seems like this might be a good use case for some pre-processing on the
IBMi to a temp table, but I don't know enough about the actual business
case.

Regards,
Richard Schoen
Director of Document Management
e. richard.schoen@xxxxxxxxxxxxxxx
p. 952.486.6802
w. helpsystems.com

------------------------------

message: 3
date: Mon, 8 Apr 2019 07:01:31 -0700
from: Spencer Elliott <spencer@xxxxxxxxxxxxxx>
subject: Re: Maximum OBDC Query Size

Hi Richard,
The question was about how big can a SQL statement be when submitted
through ODBC NOT how big can the result set be. I am working on a project
where I need to submit an extremely large SQL statement (in my opinion,
10k+) to the IBM i with a very large WHERE (500+ predicates) clause.

Spencer C Elliott


949-366-5234 X152 (O) l (949) 544-1237 (Skype)

Spencer@xxxxxxxxxxxxxx




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