Re: ROLLBACK syntax error in pgadmin4 - Mailing list pgadmin-support

Malik,

First things first.

1. This is not the correct forum for this problem.

PgAdmin is a utility for managing PostgreSQL.

You are better off re-submitting this problem to pgsql-general@postgresql.org

but you stand a better chance if you also include

A. O/S

B. Exact version of PostgreSQL

C. SQL code to reproduce the problem.

As for "ERROR: current transaction is aborted, commands ignored until end of transaction block"

It means all commands from BEGIN; until the error occurs are rolled back. No further commands

after the error occurs are executed.

 

Melvin Davidson
I reserve the right to fantasize.  Whether or not you
wish to share my fantasy is entirely up to you.
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Folk Alley - All Folk - 24 Hours a day
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From: Malik Rumi <malik.a.rumi@gmail.com>
To: Melvin Davidson <melvin6925@yahoo.com>
Cc: pgAdmin Support <pgadmin-support@postgresql.org>
Sent: Tuesday, November 29, 2016 2:50 PM
Subject: Re: [pgadmin-support] ROLLBACK syntax error in pgadmin4

Thank you. However...

ERROR: current transaction is aborted, commands ignored until end of transaction block

I'm not even sure what this means. Which transaction is it referring to? The rollback or the update?

What is the error and how do I fix it? What is meant by "until end of transaction block"? Does that mean the entire transaction block, or that something might happen after the end of this block?

I did some more googling, and found this from the postgresql list:

If that's what you're getting, the problem was with an earlier command 
that returned an error you didn't notice, not with the command you just 
ran. https://www.postgresql.org/message-id/4CAB085C.5030106@postnewspapers.com.au 

I suppose that makes sense and applies here, since I came here asking about two consecutive syntax errors in the first place. But I still don't know how to safely back out of this situation. Any further advice? Anyone?

p.s. - I said I had PG 9.4. I assumed everyone would know that meant Postgresql 9.4

On Tue, Nov 29, 2016 at 10:24 AM, Melvin Davidson <melvin6925@yahoo.com> wrote:

The problem is, ROLLBACK requires a transaction. So to use it properly you need to

start with a BEGIN statement.

eg:

BEGIN;

your_statements;

ROLLBACK;

https://www.postgresql.org/ docs/9.4/static/sql-begin.html

https://www.postgresql.org/ docs/9.4/static/sql-rollback. html

fyi, in the future, it is always a good idea to include the PostgreSQL version.

Melvin Davidson

I reserve the right to fantasize.  Whether or not you
wish to share my fantasy is entirely up to you.
www.youtube.com/unusedhero/ videos
Folk Alley - All Folk - 24 Hours a day
www.folkalley.com

---

From: Malik Rumi <malik.a.rumi@gmail.com>
To: pgAdmin Support <pgadmin-support@postgresql. org>
Sent: Tuesday, November 29, 2016 1:17 PM
Subject: [pgadmin-support] ROLLBACK syntax error in pgadmin4

I am using PGAdmin4 with PG 9.4 on Ubuntu 16.04 64 bit. I wanted to do an update, but was unsure of the result, so I unselected autocommit and ran explain. It said only one row was affected, which I didn’t understand, because it should have affected at least 2. Then I inferred that the ‘one row’ being referred to was the plan, not the rows in my data.

Then I ran the update, again no autocommit, and it was not what I expected. So then I added ROLLBACK to the end of the query, ran it again, and got this error:

ERROR: syntax error at or near "ROLLBACK" LINE 1: ...de" SET childof_id = NULL WHERE codelevelsortseq=1 ROLLBACK;

I then did a new query, with just ROLLBACK; as I see it explained with an example in the docs: https://www.postgresql.org/ docs/9.4/static/sql-rollback. html

Nevertheless, I got the same error:

ERROR: syntax error at or near "ROLLBACK" LINE 1: ...F, VERBOSE ON, COSTS ON, BUFFERS OFF, TIMING OFF) ROLLBACK;

Note in this case ROLLBACK; is the only thing on Line 1. The error carat (^) is pointing at the R in both cases. No other queries have been run in the interim.

To my surprise, there are very few Google hits for this exact search:

"syntax error at or near 'ROLLBACK'" About 30 results (0.34 seconds)

The first two hits are for a bug report from Nov. of 2006, which was fixed then and there. I don’t think this is the same bug, if it is a bug.

I did find DISCARD in the docs: https://www.postgresql.org/ docs/9.4/static/sql-discard. html however, I have not run it because I wanted some clarity here and didn’t want to interfere with my ROLLBACK, if it would even have that effect.

So, my questions:

1. How do I discard this update and get my data back?

2. How do I check to make sure it really isn’t committed without upsetting my ROLLBACK options? (Yes, I do have a backup I can go to, but I would rather understand what is happening and fix it).

4. If it isn’t committed, and this is a bug, can I just close PGAdmin4 and/or PG and discard the changes that way?

5. Is this a new, different bug?

6. What was that 'one row effected' about?