[SR-Users] sql_xquery return 1 on 0 rows?

Chaigneau, Nicolas nicolas.chaigneau at capgemini.com
Sun Nov 7 18:30:23 CET 2021


I'm using sql_xquery also (Kamailio 5.5.2).
I too have noticed that (except in case of error), it will always return 1.

So to check if rows are actually returned, I'm looking at the result XAVP.

E.g. :

if ($xavp(query_result[0]) == $null) {
	# no row


-----Message d'origine-----
De : sr-users <sr-users-bounces at lists.kamailio.org> De la part de Benoît Panizzon
Envoyé : vendredi 5 novembre 2021 15:55
À : Kamailio (SER) - Users Mailing List
Objet : [SR-Users] sql_xquery return 1 on 0 rows?

***This mail has been sent by an external source***

Dear List...

kamcmd> version
kamailio 5.4.7 (x86_64/linux)

Strange issue found.

According to: 

I should get return value 2 if no rows returned:

$var(query) contains a query that does not match (number is not

        if (sql_xquery("impkam", "$var(query)", "assignedtn") == 1) {
                if ($avp(debug) > 1) {
                        xlog("L_INFO", "$cfg(route): SQL Dump Result: $var(assignedtn) ROWS: $dbr(assignedtn=>rows) \n");
		do stuff with the assigned number
	} else {
		do stuff in case that number is not assigned

Log Output:


So the return value of the query was == 1 but the result contains no rows. How can that be?

Mit freundlichen Grüssen

-Benoît Panizzon- @ HomeOffice und normal erreichbar
I m p r o W a r e   A G    -    Leiter Commerce Kunden

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