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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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DBIx::SearchBuilder::Handle::mysql(3pm) 		User Contributed Perl Documentation		   DBIx::SearchBuilder::Handle::mysql(3pm)

NAME
DBIx::SearchBuilder::Handle::mysql - A mysql specific Handle object SYNOPSIS
DESCRIPTION
This module provides a subclass of DBIx::SearchBuilder::Handle that compensates for some of the idiosyncrasies of MySQL. METHODS
Insert Takes a table name as the first argument and assumes that the rest of the arguments are an array of key-value pairs to be inserted. If the insert succeeds, returns the id of the insert, otherwise, returns a Class::ReturnValue object with the error reported. SimpleUpdateFromSelect Customization of "SimpleUpdateFromSelect" in DBIx::SearchBuilder::Handle. Mysql doesn't support update with subqueries when those fetch data from the table that is updated. DatabaseVersion Returns the mysql version, trimming off any -foo identifier CaseSensitive Returns undef, since mysql's searches are not case sensitive by default SimpleDateTimeFunctions Returns hash reference with specific date time functions of this database for "DateTimeFunction" in DBIx::SearchBuilder::Handle. ConvertTimezoneFunction Custom implementation of "ConvertTimezoneFunction" in DBIx::SearchBuilder::Handle. Use the following query to get list of timezones: SELECT Name FROM mysql.time_zone_name; Read docs about keeping timezone data up to date: http://dev.mysql.com/doc/refman/5.5/en/time-zone-upgrades.html AUTHOR
Jesse Vincent, jesse@fsck.com SEE ALSO
DBIx::SearchBuilder, DBIx::SearchBuilder::Handle perl v5.14.2 2011-09-21 DBIx::SearchBuilder::Handle::mysql(3pm)
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