----- Original Message -----
From: Heald, Tim
To: CF-Talk
Sent: Wednesday, November 12, 2003 6:18 PM
Subject: RE: Comparing Values
Use valueList() to get a comma delimited list from the c=id column of the
first query then use IN in the second query
sorta like this:
<cfset idList = valueList(firstQuery.idField)>
<cfquery name="secondQuery" datasource="blah">
select columns
from table
where table.idField in (#valueList)
</cfquery>
Should head you down towards a quicker solution. The other idea would be
to alias the table against itself and do a join against itself something
like:
<cfquery name="getStuff" datasource="blah">
select t.columns, ta.columns
from table t, table ta
where t.this = ta.this
OR
where t.this != ta.this
</cfquery>
Without knowing the table and the desired result though I am not sure if
this is what your looking for at all.
HTH
Timothy Heald
Web Portfolio Manager
Overseas Security Advisory Council
U.S. Department of State
571.345.2319
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-----Original Message-----
From: brob [mailto:[EMAIL PROTECTED]
Sent: Wednesday, November 12, 2003 7:13 PM
To: CF-Talk
Subject: Comparing Values
Hey guys. I have a query that selects about 2,000 rows (by project id) from
a table. Then I use those values to compare with the same table using
another query (but from a different project ID. Any numbers that aren't the
same are appended to a variable named error_list. I'm basically using a
CLOOP query using the first query to loop over the second query. So it's
basically like #firstquery.recordcount# loops and checking each value.
pseudo code
<CFLOOP query="firstquery">
<CFQUERY name="secondquery">
SELECT name
from images
where project_id = #url.id# AND name = #name#
</CFQUERY>
<CFIF secondquey.recordcount EQ 0>
<CFSET error_list = listappened(error_list, name)>
</CFIF>
</CFLOOP>
<CFOUTPUT>#error_list#</CFOUTPUT>
Right now, it takes like minutes to get results! Even if there's only 1
value in the list! Is there a better way to do what I am doing? Or some
way to make it faster? Cos this is slooooooooow! Thankie!
_____
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