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  2. RPG400-L
  3. September 2022

Re: DDS define files on SQL statements

On 9/2/2022 9:44 AM, Code 1109 via RPG400-L wrote:
Hello all, can someone confirm what I've been told: "DDS defined tables default to the old iseries SQL engine and are less efficient using SQL" which in context I'm told to use native I/O RPG to code instead of embedded SQL if I am to use DDS files.
thank you!

I'm not going to swear to it, but I don't believe this is or ever was correct.  A SQL statement might be optimized in the CQE if it uses, say, a DDS LF that spans multiple files or members, but if your query runs over a straight DDS PF, I'm pretty sure the optimizer will use the SQE.

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