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Full Discussion: mysql query in shellscript
Top Forums Shell Programming and Scripting mysql query in shellscript Post 302583304 by radoulov on Tuesday 20th of December 2011 06:10:10 AM
Old 12-20-2011
You could use either:

Code:
select adv 
from indata
where inid = '$INSTRUID'
and Date = ( 
    select max(Date) 
    from indata
    where inidi = '$INSTRUID'
    limit 1
    )
limit 1;

Or:

Code:
select a.adv
from indata a
join (
  select inid, max(Date) Date    
  from indata 
  where inid = '$INSTRUID' 
  group by inid
   ) b
  on a.inid =  b.inid
  and a.Date = b.Date
  where a.inid = '$INSTRUID'
  limit 1
  ;

I've added the limit clause for safety (not knowing your table structure and data, it's impossible to know if duplicates are possible).
 

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LEARN ABOUT MOJAVE

date::calc::pp5.18

Date::Calc::PP(3)					User Contributed Perl Documentation					 Date::Calc::PP(3)

NAME

       Date::Calc::PP - pure-Perl plug-in for Date::Calc

SYNOPSIS

       You never use this module directly.  Use Date::Calc(3) instead!

DESCRIPTION

       You never use this module directly.  Use Date::Calc(3) instead!

SEE ALSO

       Date::Calc(3), Date::Calc::XS(3).

VERSION

       This man page documents "Date::Calc::PP" version 6.3.

AUTHOR

	 Steffen Beyer
	 mailto:STBEY@cpan.org
	 http://www.engelschall.com/u/sb/download/

COPYRIGHT

       Copyright (c) 1995 - 2009 by Steffen Beyer. All rights reserved.

LICENSE

       This package is free software; you can use, modify and redistribute it under the same terms as Perl itself, i.e., at your option, under the
       terms either of the "Artistic License" or the "GNU General Public License".

       The C library at the core of the module "Date::Calc::XS" can, at your discretion, also be used, modified and redistributed under the terms
       of the "GNU Library General Public License".

       Please refer to the files "Artistic.txt", "GNU_GPL.txt" and "GNU_LGPL.txt" in the "license" subdirectory of this distribution for any
       details!

DISCLAIMER

       This package is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

       See the "GNU General Public License" for more details.

perl v5.18.2							    2009-10-30							 Date::Calc::PP(3)
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