Re: Schema variables - new implementation for Postgres 15

> +-- test on query with workers
> +CREATE TABLE svar_test(a int);
> +INSERT INTO svar_test SELECT * FROM generate_series(1,1000000);

When I looked at this, I noticed this huge table.

I don't think you should create such a large table just for this.

To exercise parallel workers with a smaller table, decrease
min_parallel_table_scan_size and others as done in other regression tests.

-- 
Justin