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in reply to Re^2: Parsing Oracle PIVOT XML data
in thread Parsing Oracle PIVOT XML data

A work around might be to use a temporary table

my $sql = '
insert into TMP_XML value ( 
  select * from (
    select f1,f2,t from table
    where date > sysdate - 2
  )
  pivot xml (
    count(t) as al, sum(t) as ev
    for f2 in (any)
  ) 
)';
$dbh->do($sql);

my $sth = $dbh->prepare('SELECT * FROM TMP_XML');
$sth->execute();

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poj

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Re^4: Parsing Oracle PIVOT XML data
by tweetiepooh (Hermit) on Jan 19, 2016 at 10:32 UTC

    Thanks. That will work as a workaround and possibly a final solution. One issue I would have is that the account used to create reports can't create tables. I can get round it but it lacks some of the flexibility with lots of reports running at same time.

    It's just interesting as to what is getting returned parsed by DBI or DBD::Oracle from the original. I can't use the SQL SELECT to create a table so it's not returning a "simple" value.

[reply]

      I would assume that creating temporary tables is possible even if the user lacks the permissions to create (permanent) tables:

      CREATE GLOBAL TEMPORARY TABLE my_temp_table
        (...)
      ON COMMIT DELETE ROWS;

      [download]

      As to the larger issue, I think it's mainly an issue of the DBD to return the structured data from the XML query, and maybe supporting that isn't that easy without the driver becoming "locked" to a specific version of Oracle.

[reply]
[d/l]

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