Re: BUG #12379: pgbench should hint to pgbench -i

> $ pgbench bench -s 90000000 -j 1 -c 10
> ERROR:  relation "pgbench_branches" does not exist
> LINE 1: select count(*) from pgbench_branches
>
> 11:51  MatheusOl$ bwe: You need to run `pgbench -i` first
>
> Why does the error message does not tell me this plainly? :)

Let us be nice to users. Attached is a very small patch which adds a
simple HINT on this initial failure, for submission to the next
commitfest.

  sh> ./pgbench foo
  ERROR:  relation "pgbench_branches" does not exist
  LINE 1: select count(*) from pgbench_branches
                               ^
  HINT: is "foo" the right database? did you initialize first (pgbench -i)?

--
Fabien.