Re: Error at dynamic generated copy...

On 08/12/2016 09:34 AM, Edmundo Robles wrote:
> don't worry. I still working in this copy, how can i do to insert
> newlines to generate the copy dynamically and avoid the syntax error.

I think there is a bigger problem. From one of attempts:

ERROR: cannot COPY to/from client in PL/pgSQL

>
> On Fri, Aug 12, 2016 at 11:11 AM, Adrian Klaver
> <adrian(dot)klaver(at)aklaver(dot)com <mailto:adrian(dot)klaver(at)aklaver(dot)com>> wrote:
>
> On 08/12/2016 08:15 AM, Edmundo Robles wrote:
>
> Adrian, your'e right, the real problem is the slow insert, I have
> many devices reporting to the server and saving their state
> each
> minute so there is a moment where i reach the limit of
> connections and
> the monitor device send a exception and crash.
>
>
> The table grows a lot, current have more than 13,000,000
> records, plus
> have many indexes, that the reason why is slow to insert
> That's why i
> tried to use copy.
>
>
>
> My COPY example turned out to be a bust, so ignore. Sorry.
>
>
>
>
> On Fri, Aug 12, 2016 at 9:43 AM, Adrian Klaver
> <adrian(dot)klaver(at)aklaver(dot)com <mailto:adrian(dot)klaver(at)aklaver(dot)com>
> <mailto:adrian(dot)klaver(at)aklaver(dot)com
> <mailto:adrian(dot)klaver(at)aklaver(dot)com>>> wrote:
>
> On 08/12/2016 07:11 AM, Edmundo Robles wrote:
>
> Hi!
> I hope you could help me...
> I tried to generate the next copy instruction in a
> function:
>
> copy tablefoo (id_foo, foo_name, foo_lastname, foo_age)
> FROM stdin
> DELIMITER as '|' ;
> 12060157|John|Doe|33
> \.
>
>
> ** The commands to generate the copy are:
> CREATE OR REPLACE FUNCTION insert_tablefoo(id
> integer, name
> varchar,
> lastname varchar, age integer)
>
> ... declarations ...
>
>
> qry=format('copy tablefoo (id_foo, foo_name,
> foo_lastname,
> foo_age)
> FROM stdin DELIMITER as '||chr(39) || '|' || chr(39)
> || ';' ||
> chr(13)
> ||'%s|%s|%s|%s' || chr(13) || '\.',id,name,lastname,age);
>
> execute(qry);
>
>
> ... more declarations
> end <- end function, returns an integer.
>
>
> ** then, i call the function:
> select insert_tablefoo(12321,'John','Doe',33);
>
> **and get the next error:
>
> ERROR: syntax error at or near "12321"
> LINE 2: 12321|John|Doe|33
>
> ********** Error **********
>
>
> after many tests, the problem is concatenate the newline,
> because if
> the instruction generated is copied to a file and insert
> manually the
> newline the query works well.
>
> i tried with chr(10), '\n', '\r', split the qry
> string ( execute
> qry_copy || E'\\n' || qry_data || E'\\n\\.')
> but always get the same error :(
>
>
>
> ERROR: syntax error at or near "12321"
> SQL state: 42601
>
>
>
>
> ** By the way, i tried to replace an insert with copy
> because the
> insert takes more than 3 minutes to insert a single record.
>
>
> The above seems to be the real problem.
>
> Can you describe more what you are doing when you INSERT?
>
>
>
>
> Regards and thanks in advance.
>
>
>
> --
> Adrian Klaver
> adrian(dot)klaver(at)aklaver(dot)com <mailto:adrian(dot)klaver(at)aklaver(dot)com>
> <mailto:adrian(dot)klaver(at)aklaver(dot)com
> <mailto:adrian(dot)klaver(at)aklaver(dot)com>>
>
>
>
>
> --
> Adrian Klaver
> adrian(dot)klaver(at)aklaver(dot)com <mailto:adrian(dot)klaver(at)aklaver(dot)com>
>
>

--
Adrian Klaver
adrian(dot)klaver(at)aklaver(dot)com