diff --git a/lib/private/db/connection.php b/lib/private/db/connection.php
index 7904fab07265..61bb15032f13 100644
--- a/lib/private/db/connection.php
+++ b/lib/private/db/connection.php
@@ -265,16 +265,12 @@ private function getType($value) {
 	 * @throws PreconditionNotMetException
 	 */
 	public function setValues($table, array $keys, array $values, array $updatePreconditionValues = []) {
-		try {
-			$insertQb = $this->getQueryBuilder();
-			$insertQb->insert($table)
-				->values(
-					array_map(function($value) use ($insertQb) {
-						return $insertQb->createNamedParameter($value, $this->getType($value));
-					}, array_merge($keys, $values))
-				);
-			return $insertQb->execute();
-		} catch (\Doctrine\DBAL\Exception\ConstraintViolationException $e) {
+		$toInsert = array_merge($keys, $values);
+		$compare = array_keys($keys);
+		$tableName = $this->tablePrefix . $table;
+		$affected = $this->adapter->insertIfNotExist($tableName, $toInsert, $compare);
+
+		if ($affected === 0) {
 			// value already exists, try update
 			$updateQb = $this->getQueryBuilder();
 			$updateQb->update($table);
@@ -297,8 +293,10 @@ public function setValues($table, array $keys, array $values, array $updatePreco
 				throw new PreconditionNotMetException();
 			}
 
-			return 0;
 		}
+
+		return $affected;
+
 	}
 
 	/**