psql --single-step mode doesn't like empty sets

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psql --single-step mode doesn't like empty sets

От:
"Dan Langille" <dan@langille.org>
Дата:
As part of a 7.1.2->7.2 data migration process, I resorted to single stop 
mode to see if I could determine the cause of an error (please see my 
following post to this list).

$ less users.txt

COPY "users"  FROM stdin;
\.
--
-- TOC Entry ID 71 (OID 604886)
--
-- Name: "element_name" Type: INDEX Owner: dan
--

$ psql --single-step fp2migration < users.txt
***(Single step mode: Verify 
query)*********************************************
COPY "users"  FROM stdin;
***(press return to proceed or enter x and return to 
cancel)********************
ERROR:  copy: line 1, CopyFrom: Fail to add null value in not null 
attribute name
lost synchronization with server, resetting connection

Without single-stop, it works fine:
$ psql fp2migration < users.txt
$
-- 
Dan Langille
The FreeBSD Diary - http://freebsddiary.org/ - practical examples

Re: psql --single-step mode doesn't like empty sets

От:
Peter Eisentraut <peter_e@gmx.net>
Дата:
Dan Langille writes:

> As part of a 7.1.2->7.2 data migration process, I resorted to single stop
> mode to see if I could determine the cause of an error (please see my
> following post to this list).
>
> $ less users.txt
>
> COPY "users"  FROM stdin;
> \.
> --
> -- TOC Entry ID 71 (OID 604886)
> --
> -- Name: "element_name" Type: INDEX Owner: dan
> --
>
> $ psql --single-step fp2migration < users.txt
> ***(Single step mode: Verify
> query)*********************************************
> COPY "users"  FROM stdin;
> ***(press return to proceed or enter x and return to
> cancel)********************
> ERROR:  copy: line 1, CopyFrom: Fail to add null value in not null
> attribute name
> lost synchronization with server, resetting connection

If you're reading the file from stdin, then the confirmation for the
single-step mode will also be read from the file.  What you want to do
instead is

psql --single-step -f users.txt fp2migration

-- 
Peter Eisentraut   peter_e@gmx.net
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