st: ado file help

[tashi lama <ltashi32@hotmail.com>]

Hello all, 
    I wrote a do-file a while ago with 4 arguments as follows:

begin dofile dd.do 
clear 
set more off 
args graph_type broker_id start_date end_date 
qui odbc query indigo
odbc load, exec("select date(read_date) as date, count(*) as hits from readership where firm_id=`broker_id' and date(read_date) between '`start_date'' and '`end_date'' group by date")
if "`graph_type''=="pie" {
      ............
      exit
}
else {
     ........
    exit 
}

The problem with this code was because args is a positional macros, whatever I enter as `1' would be graph_type, `2' as broker_id and so on. If I enter the following 
do dd 2011-01-01 pie 2011-01-20 6429 => stata would take 2011-01-01 as graph_type and yields error.

This makes this code not so convenient and I would like to attempt to write a code (possible ado file with synatx) so that the code would run when 

dd graph_type="pie" start_date="2011-01-01" broker_id=6429 end_date="2011-01-20"
or 
dd end_date="2011-01-20" graph_type="line" start_date="2011-01-01" broker_id=6429

I tried but got stuck 

begin adofile dd
clear 
program dd
syntax anything 
qui odbc ...
odbc load, exec(".....

Could someone provide me an idea to accomplish this? 

Thanx,
Tashi 
   

  		 	   		  
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