Adrian Klaver-4 wrote
> Exactly, they do not have it whereas:
>
> https://www.postgresql.org/docs/9.6/static/sql-select.html#SQL-FOR-UPDATE-SHARE
Still not much. The documentation could be more verbose on this topic. I can
only presume that since there is an example with select:
SELECT * FROM (SELECT * FROM mytable FOR UPDATE) ss WHERE col1 = 5;
it's propably possible, but there is no information when the lock is
released (on commit like in oracle?) especially if there is no explicit
BEGIN/END clause like in this case.
Oracle documentation is much more clear about it:
You can also use SELECT FOR UPDATE to lock rows that you do not want to
update, as in Example 9-6.
<http://docs.oracle.com/database/122/LNPLS/static-sql.htm#LNPLS00609>
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