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Full Discussion: output arguments from a sqlplus
Top Forums Shell Programming and Scripting output arguments from a sqlplus Post 302357210 by shell_zen on Tuesday 29th of September 2009 05:50:04 AM
Old 09-29-2009
output arguments from a sqlplus
Hi.

I need to output a 4 queries result into another application using
result=`sqlplus -s ${3}/${4}@${2} << EOF
...
query1
query2
query3
query4
....
echo "$metrics1"

and returning those individual values into another app.
(query1 and 3compute one value, query 2 and 4 compute 4 values. All of them floats)
For a normal situation I output the values this way,
server_avail1=`echo $tt1| awk '{print $1}'`; server_term1=`echo $tt1| awk '{print $7}'`;
server_menu_avail=`echo $tt1| awk '{print $2}'`; server_menu_avail=`echo $tt1| awk '{print $3}'`; ...............
the problem I'm facing is sometimes some values of a query are returned NULL and thus aren't echoed, which breaks my static outputting (and if the 1st value of the 2nd query goes NULL, the values that goes into server_menu_avail is the 2nd val of the 2nd query, etc)

To gain a little control, I tried to force substituting those NULLs with a 'NULL' word
echo "$scfmetrics1" | sed 's/^$/NULL/g'
but it's getting an extra NULL between the result of query1 and 2, and query 3 and 4.
Eg: 0 NULL NULL 100 NULL 100 100 NULL 0 NULL NULL 88.46 NULL 99.12 100

Any idea how to skin this rabbit?
 

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LEARN ABOUT DEBIAN

app::cmd::tester::captureexternal

App::Cmd::Tester::CaptureExternal(3pm)			User Contributed Perl Documentation		    App::Cmd::Tester::CaptureExternal(3pm)

NAME

       App::Cmd::Tester::CaptureExternal - Extends App::Cmd::Tester to capture from external subprograms

VERSION

       version 0.318

SYNOPSIS

	 use Test::More tests => 4;
	 use App::Cmd::Tester::CaptureExternal;

	 use YourApp;

	 my $result = test_app(YourApp => [ qw(command --opt value) ]);

	 like($result->stdout, qr/expected output/, 'printed what we expected');

	 is($result->stderr, '', 'nothing sent to sderr');

	 ok($result->output, "STDOUT concatenated with STDERR");

DESCRIPTION

       App::Cmd::Tester provides a useful scaffold for testing applications, but it is unable to capture output generated from any external
       subprograms that are invoked from the application.

       This subclass uses an alternate mechanism for capturing output (Capture::Tiny) that does capture from external programs, with one major
       limitation.

       It is not possible to capture externally from both STDOUT and STDERR while also having appropriately interleaved combined output.
       Therefore, the "output" from this subclass simply concatenates the two.

       You can still use "output" for testing if there is any output at all or for testing if something appeared in either output stream, but you
       can't rely on the ordering being correct between lines to STDOUT and lines to STDERR.

AUTHOR

       Ricardo Signes <rjbs@cpan.org>

COPYRIGHT AND LICENSE

       This software is copyright (c) 2012 by Ricardo Signes.

       This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

perl v5.14.2							    2012-05-05				    App::Cmd::Tester::CaptureExternal(3pm)
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