RE: Parallel INSERT (INTO ... SELECT ...)

Hi,

When testing the patch with the following kind of sql.

---
Insert into part_table select 1;
Insert into part_table select generate_series(1,10000,1);
Insert into part_table select * from testfunc();
---

we usually use these sqls to initialize the table or for testing purpose.

Personally I think we do not need to do the parallel safety-check for these cases,
because there seems no chance for the select part to consider parallel.

I thought we aim to not check the safety unless parallel is possible.
, So I was thinking is it possible to avoid the check it these cases ?

I did some quick check on the code, An Immature ideal is to check if there is RTE_RELATION in query.
If no we do not check the safety-check.

I am not sure is it worth to do that, any thoughts ?

Best regards,
Houzj