Re: pgbench: Skipping the creating primary keys after initialization

From: Fabien COELHO <coelho(at)cri(dot)ensmp(dot)fr>
To: Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Robert Haas <robertmhaas(at)gmail(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: pgbench: Skipping the creating primary keys after initialization
Date: 2017-09-01 07:42:39
Message-ID: alpine.DEB.2.20.1709010921490.15423@lancre
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Hello Masahiko-san,

Patch applies and compiles.

One bug found, and some minor points again. Sorry for this hopefully last
iteration... I'm kind of an iterative person...

I've generated the doc to look a it.

Short option "-I" does not use a "=", it should be "-I
custom_init_commands".

Also maybe it would look nicer and clearer if the short mnemonic was
outside the literal, that is with:

<term><literal>c</> (cleanup)</>

instead of:

<term><literal>c (cleanup)</></>

But this is debatable. Do it the way you think is best.

Command "g" does not work after "f", something I had not tested before:

./pgbench -i -I ctvpfg
cleaning up...
creating tables...
vacuum...
set primary keys...
set foreign keys...
ERROR: cannot truncate a table referenced in a foreign key constraint
DETAIL: Table "pgbench_history" references "pgbench_accounts".
HINT: Truncate table "pgbench_history" at the same time, or use TRUNCATE ... CASCADE.

I think it should work. It probably just mean to TRUNCATE all tables as
one command, or add the suggested CASCADE. I would favor the first option.

I'm wondering whether this truncation should be yet another available
command? Hmmm... maybe not.

--
Fabien.

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