On 05.03.2018 18:01, Pavel Stehule wrote:
It is most correct when you thinking about it.
1. :xx is out of SQL syntax, so can by safely used. There is not risk
of unwanted usage.
But there is absence of wanted usage too.
2. but string literal can contain :xxx symbols and not necessary it
means so it should be usage of psql variable - so additional syntax
for disabling evaluation should be necessary
Yes and Oracle sqlplus (I khow than you know this tool) has special
command to control this: set define ...
Unfortunately DO command is half baked - and doesn't support
parameters. I am working on schema variables and I hope it will be a
solution of this issue:
CREATE VARIABLE var as integer;
LET var = :psqlintvar;
DO $$
BEGIN
RAISE NOTICE '%', var;
END;
$$;
It will be great. I already commented it in your blog.
-----
Pavel Luzanov
Postgres Professional: http://www.postgrespro.com
The Russian Postgres Company
