From: Joseph Lukas
Date: July 8 2009 11:43pm
Subject: Empty var_list issue - per query variable setting GSoC project
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Message-Id: <3026182F-E82B-4A13-8134-FECA8B19C883@gmail.com>
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I pushed what i currently have up to launchpad. I am still having the  
issue with empty var_list I do not know what is clearing it or whether  
it was set-up at all properly.  I am attempting to back track the  
select statements to see if they cause any of it during the parse set  
up in sql_yacc.yy. As it stands I have not found any direct Lex- 
 >var_list.empty() being used.  There are a few function calls it  
seems to set up the Lex in the select statements.  I will be looking  
through these shortly.  I modified my function in set_var.cc as it  
calls sql_set_variables as I figured I could re-use the function to  
set the variables and seemed simple enough.  The test statement makes  
it through the query but the variable is not changed so the var_list  
is definitely empty as best I can tell.

Joe