asterisk users - Dec 2008 - MySQL Error Message

Can some tell me what this warnings means? 
The dialplan works, but I get these warnings every once in a while:

Log:

[Dec 1 12:26:31] WARNING[20425] app_addon_sql_mysql.c: Identifier 0,
identifier_type 2 not found in identifier list
[Dec 1 12:26:31] WARNING[20425] app_addon_sql_mysql.c: Invalid result identifier
0 passed in aMYSQL_clear
[Dec 1 12:26:31] WARNING[20425] app_addon_sql_mysql.c: Identifier 4,
identifier_type 2 not found in identifier list
[Dec 1 12:26:31] WARNING[20425] app_addon_sql_mysql.c: Invalid result identifier
4 passed in aMYSQL_clear

DialPlan:

 exten => s,1,Noop()
 exten => s,n,MYSQL(Connect connid localhost userid password database)
 exten => s,n,MYSQL(Query resultid ${connid} SELECT\ name\ FROM\ cnam\ WHERE\
ani=\'${CALLERID(number)}\')
 exten => s,n,MYSQL(Fetch fetchid ${resultid} name)
 exten => s,n,MYSQL(Clear ${resultid})
 exten => s,n,MYSQL(Disconnect ${connid})

Thanks, Bart
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Barton Fisher wrote:
> Can some tell me what this warnings means?
> The dialplan works, but I get these warnings every once in a while:
>  
I'm guessing that some times the caller-id is blank.  I got tired of 
those errors and did the following before the query:

exten => s,1,GotoIf($["${CALLERID(num)}" = "" ]?2:3)
exten => s,n,Set(CALLERID(all)=Restricted <0>)
exten => s,1,Noop()
exten => s,n,MYSQL(Connect connid localhost userid password database)


Doug


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