diff --git a/include/acl_selectors.php b/include/acl_selectors.php
index 9c3eab58ba..f2d2999ba6 100644
--- a/include/acl_selectors.php
+++ b/include/acl_selectors.php
@@ -502,7 +502,7 @@ function acl_lookup(App $a, $out_type = 'json') {
 				INNER JOIN `group_member` ON `group_member`.`gid`=`group`.`id` AND `group_member`.`uid` = `group`.`uid`
 				WHERE NOT `group`.`deleted` AND `group`.`uid` = %d
 					$sql_extra
-				GROUP BY `group`.`name`
+				GROUP BY `group`.`name`, `group`.`id`
 				ORDER BY `group`.`name`
 				LIMIT %d,%d",
 			intval(local_user()),
@@ -625,7 +625,7 @@ function acl_lookup(App $a, $out_type = 'json') {
 				FROM `item` WHERE `parent` = %d
 					AND (`author-name` LIKE '%%%s%%' OR `author-link` LIKE '%%%s%%')
 					AND `author-link` NOT IN ('%s')
-				GROUP BY `author-link`
+				GROUP BY `author-link`, `author-avatar`, `author-name`
 				ORDER BY `author-name` ASC
 				",
 				intval($conv_id),
diff --git a/include/api.php b/include/api.php
index 9fc853340a..75f8ab069a 100644
--- a/include/api.php
+++ b/include/api.php
@@ -3064,7 +3064,7 @@ use \Friendica\Core\Config;
 	function api_fr_photos_list($type) {
 		if (api_user()===false) throw new ForbiddenException();
 		$r = q("select `resource-id`, max(scale) as scale, album, filename, type from photo
-				where uid = %d and album != 'Contact Photos' group by `resource-id`",
+				where uid = %d and album != 'Contact Photos' group by `resource-id`, album, filename, type",
 			intval(local_user())
 		);
 		$typetoext = array(
@@ -3099,11 +3099,14 @@ use \Friendica\Core\Config;
 
 		$scale = (x($_REQUEST, 'scale') ? intval($_REQUEST['scale']) : false);
 		$scale_sql = ($scale === false ? "" : sprintf("and scale=%d",intval($scale)));
-		$data_sql = ($scale === false ? "" : "data, ");
+		$data_sql = ($scale === false ? "" : "ANY_VALUE(data) AS data,");
 
-		$r = q("select %s `resource-id`, `created`, `edited`, `title`, `desc`, `album`, `filename`,
-						`type`, `height`, `width`, `datasize`, `profile`, min(`scale`) as minscale, max(`scale`) as maxscale
-				from photo where `uid` = %d and `resource-id` = '%s' %s group by `resource-id`",
+		$r = q("select %s ANY_VALUE(`resource-id`) AS `resource-id`, ANY_VALUE(`created`) AS `created`,
+				ANY_VALUE(`edited`) AS `edited`, ANY_VALUE(`title`) AS `title`, ANY_VALUE(`desc`) AS `desc`,
+				ANY_VALUE(`album`) AS `album`, ANY_VALUE(`filename`) AS `filename`, ANY_VALUE(`type`) AS `type`,
+				ANY_VALUE(`height`) AS `height`, ANY_VALUE(`width`) AS `width`, ANY_VALUE(`datasize`) AS `datasize`,
+				ANY_VALUE(`profile`) AS `profile`, min(`scale`) as minscale, max(`scale`) as maxscale
+				from photo where `uid` = %d and `resource-id` = '%s' %s",
 			$data_sql,
 			intval(local_user()),
 			dbesc($_REQUEST['photo_id']),
diff --git a/include/dba.php b/include/dba.php
index 62728acaed..5066dcd56d 100644
--- a/include/dba.php
+++ b/include/dba.php
@@ -20,6 +20,7 @@ class dba {
 	private $driver;
 	public  $connected = false;
 	public  $error = false;
+	private $_server_info = '';
 
 	function __construct($server, $user, $pass, $db, $install = false) {
 		$a = get_app();
@@ -103,18 +104,20 @@ class dba {
 	 * @return string
 	 */
 	public function server_info() {
-		switch ($this->driver) {
-			case 'pdo':
-				$version = $this->db->getAttribute(PDO::ATTR_SERVER_VERSION);
-				break;
-			case 'mysqli':
-				$version = $this->db->server_info;
-				break;
-			case 'mysql':
-				$version = mysql_get_server_info($this->db);
-				break;
+		if ($this->_server_info == '') {
+			switch ($this->driver) {
+				case 'pdo':
+					$this->_server_info = $this->db->getAttribute(PDO::ATTR_SERVER_VERSION);
+					break;
+				case 'mysqli':
+					$this->_server_info = $this->db->server_info;
+					break;
+				case 'mysql':
+					$this->_server_info = mysql_get_server_info($this->db);
+					break;
+			}
 		}
-		return $version;
+		return $this->_server_info;
 	}
 
 	/**
@@ -474,6 +477,26 @@ class dba {
 			}
 		}
 	}
+
+	/**
+	 * @brief Replaces ANY_VALUE() function by MIN() function,
+	 *  if the database server does not support ANY_VALUE().
+	 *
+	 * Considerations for Standard SQL, or MySQL with ONLY_FULL_GROUP_BY (default since 5.7.5).
+	 * ANY_VALUE() is available from MySQL 5.7.5 https://dev.mysql.com/doc/refman/5.7/en/miscellaneous-functions.html
+	 * A standard fall-back is to use MIN().
+	 *
+	 * @param string $sql An SQL string without the values
+	 * @return string The input SQL string modified if necessary.
+	 */
+	public function any_value_fallback($sql) {
+		$server_info = $this->server_info();
+		if (version_compare($server_info, '5.7.5', '<') ||
+			(stripos($server_info, 'MariaDB') !== false)) {
+			$sql = str_ireplace('ANY_VALUE(', 'MIN(', $sql);
+		}
+		return $sql;
+	}
 }
 
 function printable($s) {
@@ -514,6 +537,7 @@ function q($sql) {
 	unset($args[0]);
 
 	if ($db && $db->connected) {
+		$sql = $db->any_value_fallback($sql);
 		$stmt = @vsprintf($sql,$args); // Disabled warnings
 		//logger("dba: q: $stmt", LOGGER_ALL);
 		if ($stmt === false)
@@ -550,6 +574,7 @@ function qu($sql) {
 	unset($args[0]);
 
 	if ($db && $db->connected) {
+		$sql = $db->any_value_fallback($sql);
 		$stmt = @vsprintf($sql,$args); // Disabled warnings
 		if ($stmt === false)
 			logger('dba: vsprintf error: ' . print_r(debug_backtrace(),true), LOGGER_DEBUG);
diff --git a/include/notifier.php b/include/notifier.php
index e3d7d10d6b..370611b4eb 100644
--- a/include/notifier.php
+++ b/include/notifier.php
@@ -516,7 +516,8 @@ function notifier_run(&$argv, &$argc){
 				$r0 = Diaspora::relay_list();
 			}
 
-			$r1 = q("SELECT DISTINCT(`batch`), `id`, `name`,`network` FROM `contact` WHERE `network` = '%s'
+			$r1 = q("SELECT `batch`, ANY_VALUE(`id`) AS `id`, ANY_VALUE(`name`) AS `name`, ANY_VALUE(`network`) AS `network`
+				FROM `contact` WHERE `network` = '%s'
 				AND `uid` = %d AND `rel` != %d AND NOT `blocked` AND NOT `pending` AND NOT `archive` GROUP BY `batch` ORDER BY rand()",
 				dbesc(NETWORK_DIASPORA),
 				intval($owner['uid']),
diff --git a/include/ostatus.php b/include/ostatus.php
index e0b33a1a47..e0ed1df19a 100644
--- a/include/ostatus.php
+++ b/include/ostatus.php
@@ -720,11 +720,11 @@ class ostatus {
 			$conversations = q("SELECT `term`.`oid`, `term`.`url`, `term`.`uid` FROM `term`
 						STRAIGHT_JOIN `thread` ON `thread`.`iid` = `term`.`oid` AND `thread`.`uid` = `term`.`uid`
 						WHERE `term`.`type` = 7 AND `term`.`term` > '%s' AND `thread`.`mention`
-						GROUP BY `term`.`url`, `term`.`uid` ORDER BY `term`.`term` DESC", dbesc($start));
+						GROUP BY `term`.`url`, `term`.`uid`, `term`.`oid`, `term`.`term` ORDER BY `term`.`term` DESC", dbesc($start));
 		} else {
 			$conversations = q("SELECT `oid`, `url`, `uid` FROM `term`
 						WHERE `type` = 7 AND `term` > '%s'
-						GROUP BY `url`, `uid` ORDER BY `term` DESC", dbesc($start));
+						GROUP BY `url`, `uid`, `oid`, `term` ORDER BY `term` DESC", dbesc($start));
 		}
 
 		foreach ($conversations AS $conversation) {
diff --git a/include/photos.php b/include/photos.php
index 376be05c8f..e872532a48 100644
--- a/include/photos.php
+++ b/include/photos.php
@@ -48,7 +48,7 @@ function photo_albums($uid, $update = false) {
 		if (!Config::get('system', 'no_count', false)) {
 			/// @todo This query needs to be renewed. It is really slow
 			// At this time we just store the data in the cache
-			$albums = qu("SELECT COUNT(DISTINCT `resource-id`) AS `total`, `album`
+			$albums = qu("SELECT COUNT(DISTINCT `resource-id`) AS `total`, `album`, ANY_VALUE(`created`) AS `created`
 				FROM `photo`
 				WHERE `uid` = %d  AND `album` != '%s' AND `album` != '%s' $sql_extra
 				GROUP BY `album` ORDER BY `created` DESC",
diff --git a/mod/admin.php b/mod/admin.php
index 2652b33c12..fb463d31c0 100644
--- a/mod/admin.php
+++ b/mod/admin.php
@@ -290,7 +290,8 @@ function admin_page_federation(App $a) {
 	foreach ($platforms as $p) {
 		// get a total count for the platform, the name and version of the
 		// highest version and the protocol tpe
-		$c = qu('SELECT COUNT(*) AS `total`, `platform`, `network`, `version` FROM `gserver`
+		$c = qu('SELECT COUNT(*) AS `total`, ANY_VALUE(`platform`) AS `platform`,
+				ANY_VALUE(`network`) AS `network`, MAX(`version`) AS `version` FROM `gserver`
 				WHERE `platform` LIKE "%s" AND `last_contact` >= `last_failure`
 				ORDER BY `version` ASC;', $p);
 		$total = $total + $c[0]['total'];
diff --git a/mod/message.php b/mod/message.php
index 9e96691466..d3bd1558cc 100644
--- a/mod/message.php
+++ b/mod/message.php
@@ -349,7 +349,7 @@ function message_content(App $a) {
 
 		$o .= $header;
 
-		$r = q("SELECT count(*) AS `total` FROM `mail`
+		$r = q("SELECT count(*) AS `total` FROM `mail`, ANY_VALUE(`created`) AS `created`
 			WHERE `mail`.`uid` = %d GROUP BY `parent-uri` ORDER BY `created` DESC",
 			intval(local_user())
 		);
@@ -528,9 +528,14 @@ function message_content(App $a) {
 }
 
 function get_messages($user, $lstart, $lend) {
-
+	//TODO: rewritte with a sub-query to get the first message of each private thread with certainty
 	return q("SELECT max(`mail`.`created`) AS `mailcreated`, min(`mail`.`seen`) AS `mailseen`,
-		`mail`.* , `contact`.`name`, `contact`.`url`, `contact`.`thumb` , `contact`.`network`,
+		ANY_VALUE(`mail`.`id`), ANY_VALUE(`mail`.`uid`), ANY_VALUE(`mail`.`guid`), ANY_VALUE(`mail`.`from-name`),
+		ANY_VALUE(`mail`.`from-photo`), ANY_VALUE(`mail`.`from-url`), ANY_VALUE(`mail`.`contact-id`),
+		ANY_VALUE(`mail`.`convid`), ANY_VALUE(`mail`.`title`), ANY_VALUE(`mail`.`body`), ANY_VALUE(`mail`.`seen`),
+		ANY_VALUE(`mail`.`reply`), ANY_VALUE(`mail`.`replied`), ANY_VALUE(`mail`.`unknown`),
+		ANY_VALUE(`mail`.`uri`), ANY_VALUE(`mail`.`parent-uri`), ANY_VALUE(`mail`.`created`),
+		ANY_VALUE(`contact`.`name`), ANY_VALUE(`contact`.`url`), ANY_VALUE(`contact`.`thumb`), ANY_VALUE(`contact`.`network`),
 		count( * ) as count
 		FROM `mail` LEFT JOIN `contact` ON `mail`.`contact-id` = `contact`.`id`
 		WHERE `mail`.`uid` = %d GROUP BY `parent-uri` ORDER BY `mailcreated` DESC  LIMIT %d , %d ",
diff --git a/mod/photos.php b/mod/photos.php
index 3acd39b2af..8e47829774 100644
--- a/mod/photos.php
+++ b/mod/photos.php
@@ -1240,7 +1240,9 @@ function photos_content(App $a) {
 			$order = 'DESC';
 		}
 
-		$r = q("SELECT `resource-id`, `id`, `filename`, type, max(`scale`) AS `scale`, `desc` FROM `photo` WHERE `uid` = %d AND `album` = '%s'
+		$r = q("SELECT `resource-id`, ANY_VALUE(`id`) AS `id`, ANY_VALUE(`filename`) AS `filename`,
+			ANY_VALUE(`type`) AS `type`, max(`scale`) AS `scale`, ANY_VALUE(`desc`) as `desc`
+			FROM `photo` WHERE `uid` = %d AND `album` = '%s'
 			AND `scale` <= 4 $sql_extra GROUP BY `resource-id` ORDER BY `created` $order LIMIT %d , %d",
 			intval($owner_uid),
 			dbesc($album),
diff --git a/mod/ping.php b/mod/ping.php
index b5330c7b33..ba496a70bd 100644
--- a/mod/ping.php
+++ b/mod/ping.php
@@ -199,7 +199,7 @@ function ping_init(App $a)
 		$cachekey = "ping_init:".local_user();
 		$ev = Cache::get($cachekey);
 		if (is_null($ev)) {
-			$ev = qu("SELECT count(`event`.`id`) AS total, type, start, adjust FROM `event`
+			$ev = qu("SELECT type, start, adjust FROM `event`
 				WHERE `event`.`uid` = %d AND `start` < '%s' AND `finish` > '%s' and `ignore` = 0
 				ORDER BY `start` ASC ",
 				intval(local_user()),
@@ -212,7 +212,7 @@ function ping_init(App $a)
 		}
 
 		if (dbm::is_result($ev)) {
-			$all_events = intval($ev[0]['total']);
+			$all_events = count($ev);
 
 			if ($all_events) {
 				$str_now = datetime_convert('UTC', $a->timezone, 'now', 'Y-m-d');
diff --git a/mod/profile.php b/mod/profile.php
index fbce509d29..a83cb076f2 100644
--- a/mod/profile.php
+++ b/mod/profile.php
@@ -210,7 +210,7 @@ function profile_content(App $a, $update = 0) {
 
 	if ($update) {
 
-		$r = q("SELECT distinct(parent) AS `item_id`, `item`.`network` AS `item_network`
+		$r = q("SELECT distinct(parent) AS `item_id`, `item`.`network` AS `item_network`, `item`.`created`
 			FROM `item` INNER JOIN `contact` ON `contact`.`id` = `item`.`contact-id`
 			AND `contact`.`blocked` = 0 AND `contact`.`pending` = 0
 			WHERE `item`.`uid` = %d AND `item`.`visible` = 1 AND
diff --git a/mod/search.php b/mod/search.php
index 7d588aa4d1..f274b2a879 100644
--- a/mod/search.php
+++ b/mod/search.php
@@ -214,7 +214,7 @@ function search_content(App $a) {
 			FROM `item` %s
 			WHERE %s AND (`item`.`uid` = 0 OR (`item`.`uid` = %s AND NOT `item`.`global`))
 				$sql_extra
-			GROUP BY `item`.`uri` ORDER BY `item`.`id` DESC LIMIT %d , %d",
+			GROUP BY `item`.`uri`, `item`.`id` ORDER BY `item`.`id` DESC LIMIT %d , %d",
 				item_fieldlists(), item_joins(), item_condition(),
 				intval(local_user()),
 				intval($a->pager['start']), intval($a->pager['itemspage']));
diff --git a/mod/videos.php b/mod/videos.php
index 3828b8f1fe..269d537854 100644
--- a/mod/videos.php
+++ b/mod/videos.php
@@ -356,7 +356,9 @@ function videos_content(App $a) {
 		$a->set_pager_itemspage(20);
 	}
 
-	$r = q("SELECT hash, `id`, `filename`, filetype FROM `attach`
+	$r = q("SELECT hash, ANY_VALUE(`id`) AS `id`, ANY_VALUE(`created`) AS `created`,
+		ANY_VALUE(`filename`) AS `filename`, ANY_VALUE(`filetype`) as `filetype`
+		FROM `attach`
 		WHERE `uid` = %d AND filetype LIKE '%%video%%'
 		$sql_extra GROUP BY hash ORDER BY `created` DESC LIMIT %d , %d",
 		intval($a->data['user']['uid']),