Hello,

checking the presence of the xavp with the result is probably the way to do it, the docs do not list different return code for no-result case.

Cheers, Daniel

On 07.11.21 18:30, Chaigneau, Nicolas wrote:

Hello,

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 (...)

Regards, Nicolas.

-----Message d'origine----- De : sr-users sr-users-bounces@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?

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Dear List...

kamcmd> version kamailio 5.4.7 (x86_64/linux)

Strange issue found.

According to: https://kamailio.org/docs/modules/5.4.x/modules/sqlops.html

I should get return value 2 if no rows returned:

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

    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:

CHECK_ASSIGNED_TN: SQL Dump Result: 0 ROWS: 0

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

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Zurlindenstrasse 29 Tel +41 61 826 93 00 CH-4133 Pratteln Fax +41 61 826 93 01 Schweiz Web http://www.imp.ch ______________________________________________________

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Just to brainstorm: We may want to look into implementing something like the old xpath or new shiny jpath (for json) for the xavps.

And if someone volunteer to write more xavp example code to explain them I think we would make life easier for a lot of Kamailians.

/O

On 9 Nov 2021, at 08:26, Daniel-Constantin Mierla miconda@gmail.com wrote:

Hello,

sql_xquery() does not store anything inside $dbr(...), it stores the result inside $xavp(...).

You have to use sql_query() to store inside $dbr().

Cheers, Daniel

On 05.11.21 15:55, Benoît Panizzon wrote:

...

Dear List...

kamcmd> version kamailio 5.4.7 (x86_64/linux)

Strange issue found.

According to: https://kamailio.org/docs/modules/5.4.x/modules/sqlops.html

I should get return value 2 if no rows returned:

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

   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:

CHECK_ASSIGNED_TN: SQL Dump Result: 0 ROWS: 0

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 ______________________________________________________

Zurlindenstrasse 29 Tel +41 61 826 93 00 CH-4133 Pratteln Fax +41 61 826 93 01 Schweiz Web http://www.imp.ch ______________________________________________________

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