From 795a09077ccc5dd06f9074978dc77dd81389512b Mon Sep 17 00:00:00 2001
From: Daniel-Constantin Mierla <miconda@gmail.com>
Date: Thu, 13 Jan 2022 16:49:33 +0100
Subject: [PATCH] db_unixodbc: catch queries without result to skip printing
 error logs

- GH #2810
---
 src/modules/db_unixodbc/dbase.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/modules/db_unixodbc/dbase.c b/src/modules/db_unixodbc/dbase.c
index f2e1a3b12eb..bbbb6e2d38d 100644
--- a/src/modules/db_unixodbc/dbase.c
+++ b/src/modules/db_unixodbc/dbase.c
@@ -252,6 +252,8 @@ void db_unixodbc_close(db1_con_t* _h)
  */
 static int db_unixodbc_store_result(const db1_con_t* _h, db1_res_t** _r)
 {
+	SQLSMALLINT cols = 0;
+
 	if ((!_h) || (!_r))
 	{
 		LM_ERR("invalid parameter value\n");
@@ -266,6 +268,14 @@ static int db_unixodbc_store_result(const db1_con_t* _h, db1_res_t** _r)
 		return -2;
 	}
 
+	SQLNumResultCols(CON_RESULT(_h), &cols);
+	if(cols==0) {
+		/* no result */
+		(*_r)->col.n = 0;
+		(*_r)->n = 0;
+		return 0;
+	}
+
 	if (db_unixodbc_convert_result(_h, *_r) < 0)
 	{
 		LM_ERR("failed to convert result\n");