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  1.  Home
  2. RPG400-L
  3. October 2020

RE: Performance question of RPG native read vs SQL

<smith5646midrange>
Unfortunately, the entire driver file is needed to build the summary file.
The driver is a transaction based file. It is rolled up to the summary
level so they don't have to chug through the transactions every time. There
is no selection. Only a top to bottom keyed read.
</smith5646midrange>

... if you could bring it to a bulk statement like
create table ... as select ...
or
insert into ... select ...

this would beat the row by row processing, regardless wether you are using RLA or SQL to do this.
even faster versions could be done with parallelism (if your ressources are not constrained.

If your process is doing additional logic, first step would be to analyze where thr most time in consumed.

D*B

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