Cfqueryparam numeric help - is this the best way

Question

I have an update in one of my programs and I'm using the
cfqueryparam. It works fine if the value is not entered since the
type is cf_sql_varchar. If the value is cf_sql_integer/cf_sql_float
and the field is required, it again works fine. Now if the field is
cf_sql_integer and not required, it will throw an error if no value
is passed to it. I tried using the NULL parameter, but that will
put NULL in the field every time. I finally ended up using a cfif
statement to check. Is this the best way? Am I missing something?
How do others handle this?

Answer 1

Your's is as good a way as any. But since you asked, my
approach is usually like this:
Step 1, build a string variable called sql. Perform all your
if/else and other logic at this step.
Step 2
<cfquery>
#PreserveSingleQuotes(sql)#
</cfquery>
My method makes it almost impossible to use cfqueryparam
because of all the quotes. However, I find it easier to develop,
read, and maintain code when you have as much if/else, loop, etc
processing in the same block of code.
You might be able to do both. Something like
Step 1 - use if/else logic to set a variable (call it null)
to either yes or no.
Step 2
cfqueryparam null="#null#">
I've never actually tried. Most of my work is with a db that
does not support cfqueryparam so using it is not a high priority
item for me.