Cfml check for null

Character that separates values in list, in value attribute. This tag does the following: Allows the use of SQL bind parameters, which improves performance. Ensures that variable data matches the specified SQL type. Allows long text fields to be updated from a SQL statement. Escapes string variables in single-quotation marks. To benefit from the enhanced performance of bind variables, use cfqueryparam for all ColdFusion variables, and your DBMS must support bind variables.

If a DBMS does not support bind parameters, ColdFusion validates and substitutes the validated parameter value back into the string. If validation fails, it returns an error message. Sign in to your account. Sign in. I use this most generally in a "looping" context. So, when I said "looping" I meant that that is the situation in which this mostly comes up; I didn't mean to say that that is how Java performs loops in general.

Sorry for the confusion. The same behavior deleting the variable is also exhibited iif you have the following within a cffunction:.

The return type of the function needs to be "Any" or "Void" - but it it was void, then there would be no need to check it. Hi Ben! I have a CF-Java codes not written by me, I don't speak java that converts a text feed into a query. All I need to do is to query this query and use the resultset. Unfortunately this java things create difficulty on my simple query may be it is related to what you wrote in this blog about java returning null instead of empty string?

What you are running into is one of the many times that ColdFusion query of queries become frustrating. Try casting the SSN and bday back to varchar:. I haven't been on CFMX in a long time. Perhaps you can try calling a Java method that returns a NULL value and pass that to the constructor. Sorry I don't have any better advice.

Container ;. ValveBase ;. Request ;. Response ;. HostConfig ;. LifecycleException ;. String tcDocRoot;. String tcHost;. String tcMainHost;. Skip this Valve. Defaulting to Directory may not exist, or Tomcat may not have permission to check it. Please wait a few moments and try again. No more contexts can be created! StandardHost host;.