If I pass an empty field into a stored procedure like so:
<cfstoredproc procedure="myProcedure" datasource="#Application.D
<cfprocparam type="in" cfsqltype="cf_sql_integer"
</cfstoredproc>
I get:
invalid data for cfsqltype cf_sql_integer.
Is that right?
What technique should I use?
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Terribly sorry...I messed up the CFIF statement. The NULL should be applied if an empty field is detected. Should read:
<cfstoredproc procedure="myProcedure" datasource="#Application.D
<cfif len(FORM.CustomerNo) is 0>
<cfprocparam type="in" cfsqltype="cf_sql_integer"
<cfelse>
<cfprocparam type="in" cfsqltype="cf_sql_integer"
</cfif>
</cfstoredproc>
Sorry for the confusion.
There was no confusion because I read your 2nd email before your first.
Another cf developer suggests the same technique, only with a little tighter.
<cfprocparam type="in" cfsqltype="cf_sql_integer"
null="#YesNoFormat(NOT len(form.CustNo))#">
If "Yes", the null attribute allows to pass a NULL to a stored proc
(no matter if the variable you pass is empty or not!).
If "No", the content of the variable in question is passed.
If form.CustNo is empty, then "NOT len(form.CustNo)" is true and
YesNoFormat() turns everything into null="yes"
If form.CustNo does contain a value, it's length is not 0 thus "NOT
len(form.CustNo)" is false and YesNoFormat sets null="no" and the param
passes the variable value.
I think your technique is better because some fields are defined as NOT NULL.
For those fields, I think what I'll use is:
<cfstoredproc procedure="myProcedure" datasource="#Application.D
<cfif Len(FORM.CustNo) EQ 0>
<cfprocparam type="in" cfsqltype="cf_sql_integer"
<cfelse>
<cfprocparam type="in" cfsqltype="cf_sql_integer"
</cfif>
</cfstoredproc>
That's probably because Form.CustNo is blank...that is: not a number. Can't add 0 to blank.
Maybe a better solution is:
<cfif NOT isNumeric(FORM.CustNo)>
<cfprocparam type="in" cfsqltype="cf_sql_integer"
<cfelse>
<cfprocparam type="in" cfsqltype="cf_sql_integer"
</cfif>
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by: pmascariPosted on 2006-03-02 at 18:39:54ID: 16091342
This is the correct behavior because your telling CF to form its SQL as if there were to be an integer in #FORM.CustomerNo#. So, for example, the SQL could look like:
SELECT * FROM TABLE1 WHERE CustomerNo = #FORM.CustomerNo#;
This will translate to
SELECT * FROM TABLE1 WHERE CustomerNo = ;
on your database. Assuming CustomerNo is an integer field you can see why this produces an error. If CustomerNo were a VARCHAR field, however, you could pass an empty field (making sure to change your CFSQLTYPE to CF_SQL_VARCHAR) and the SQL would end up like:
SELECT * FROM TABLE1 WHERE CustomerNo = '';
which would be valid.
If you need to keep the DB field as an integer you should probably pass in a null value rather than an empty space like so:
<cfstoredproc procedure="myProcedure" datasource="#Application.D
<cfif len(FORM.CustomerNo) is 0>
<cfprocparam type="in" cfsqltype="cf_sql_integer"
<cfelse>
<cfprocparam type="in" cfsqltype="cf_sql_integer"
</cfif>
</cfstoredproc>