I am at a higher level than that. Here is my query: SELECT distinct emt.group_name FROM epa.aq_ambient_nad83 aq_, epa.aq_ambient_pollutants pol, epa.emtb_pollutant_group emt, epa.pollutant pt WHERE (aq_.siteid = pol.siteid) AND (emt.group_code = pt.ambient_group_code) AND (pol.paramcode = pt.paramcode) AND AQ_.SITEID = <cfqueryparam cfsqltype="CF_SQL_INTEGER" value="#FORM.siteID#">
This gives me the list of pollutants at one site. If I remove the "And aq.siteid...." part, then I get a list of all the pollutants. --ja On Thu, 5 Apr 2007, Jerry Schwartz wrote: > I'm not sure I quite follow. Is there a concentration for each location for > each of a master list of pollutants? What concentration would be considered > "not there"? > > In any case, look at a construct like (ABS(concentration) <= <tolerance>), > where <tolerance can be either a constant or a field associated with a > particular pollutant. That construct will return TRUE or FALSE, which > evaluate to 1 and 0, respectively. > > I hope that helps. > > Regards, > > Jerry Schwartz > Global Information Incorporated > 195 Farmington Ave. > Farmington, CT 06032 > > 860.674.8796 / FAX: 860.674.8341 > > > > -----Original Message----- > > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > > Sent: Thursday, April 05, 2007 2:47 PM > > To: mysql@lists.mysql.com > > Subject: return integer for positive values > > > > > > I have a table with a list of pollutants. I have a table of > > locations, site names, counties, etc. I can join the these > > tables together and get a list of of all the pollutants at a > > site. But, what I am really wanting is a list of all the > > pollutants with a integer field, zero for pollutant not here, > > 1 for pollutant here. > > > > So that instead of the list I get now: > > benzaldehyde > > freon > > formaldehyde > > > > I would get: > > > > lead 0 > > acetone 0 > > benzaldehyde 1 > > butane 0 > > freon 1 > > formaldehyde 1 > > > > How can I return an integer for positive values like this in a query? > > > > --ja > > > > > > -- > > > > > > -- > > MySQL General Mailing List > > For list archives: http://lists.mysql.com/mysql > > To unsubscribe: > > http://lists.mysql.com/[EMAIL PROTECTED] > > > > > > > > -- -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
