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Re: Cloning schemas

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On 07/02/2018 06:57 AM, Łukasz Jarych wrote:
Hi,

"
Strange. "audit_sq" looks like an invalid sequence table. I went here,https://www.postgresql.org/docs/9.6/static/sql-createsequence.html, and checked all the way back to version 7.1 and "maxvalue" has been a column since back then.

What version of Postgres are you actually doing the cloning in?

Per Tom's post:

https://www.postgresql.org/docs/10/static/release-10.html

"
Move sequences' metadata fields into a new pg_sequence system catalog (Peter Eisentraut)

...

A sequence relation now stores only the fields that can be modified by nextval(), that is last_value, log_cnt, and is_called.

...

The main incompatibility introduced by this change is that selecting from a sequence relation now returns only the three fields named above. To obtain the sequence's other properties, applications must look into pg_sequence. The new system view pg_sequences can also be used for this purpose; it provides column names that are more compatible with existing code.
"


Maybe skip that table for now? It even says the last value is 1. You should also check the other sequence tables. You can get them by doing:

select * from information_schema.sequences;"

Result of select:

image.png

Are you sure that I can skip " audit_sq" seq?

I wrote here because i am newbie and i can not update this. Hope for your help Guys.

Best,
Jacek







pon., 2 lip 2018 o 15:30 Tom Lane <tgl@xxxxxxxxxxxxx <mailto:tgl@xxxxxxxxxxxxx>> napisał(a):

    =?UTF-8?Q?=C5=81ukasz_Jarych?= <jaryszek@xxxxxxxxx
    <mailto:jaryszek@xxxxxxxxx>> writes:
     > I am trying to use :

     > "select * from clone_schema('public','Version8',true) but i am
    getting
     > error:

     > "Column "max_value" does not exist.
     > LINE 1: SELECT last_value, max_value, start_value, increment_by,
    min...
     > HINT: Maybe you wanted to point to column " "audit_sq.last_value"?
     > QUERY: SELECT last_value, max_value, start_value, increment_by,
    min_value,
     > cache_value, log_cnt, is_cycled, is_called FROM public.audit_sq;
     > CONTEXT: function PL/pgSQL clone_schema(text,text,boolean), row 66 in
     > EXECUTE

    I guess audit_sq is a sequence?  It looks to me like this function has
    not been taught about the changes in sequence metadata in PG v10.
    You need to update it, or talk to its author about an update.

                             regards, tom lane



--
Adrian Klaver
adrian.klaver@xxxxxxxxxxx




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