Re: Questions of 'for update'

On Mon, Jun 10, 2019 at 12:42 PM Etsuro Fujita <etsuro.fujita@gmail.com> wrote:

Hi,

On Mon, Jun 10, 2019 at 3:50 PM Kuntal Ghosh <kuntalghosh.2007@gmail.com> wrote:
> On Mon, Jun 10, 2019 at 11:31 AM Zhenghua Lyu <zlv@pivotal.io> wrote:
>> 2. Is the case above a bug or a feature?
>>
> IMHO, it looks like an expected behaviour of a correct transaction management implementation.

This is documented behavior; see the Caution for The Locking Clause on
the SELECT reference page:
https://www.postgresql.org/docs/11/sql-select.html

Great. It also suggests a workaround. 

--

Thanks & Regards,
Kuntal Ghosh
EnterpriseDB: http://www.enterprisedb.com