Merge pull request #8537 from annando/views

We now can define views
2020-04-26 13:46:26 -04:00 · 2020-04-26 13:46:26 -04:00 · 1b8918351d
parent 91b87b8df1 53b0401d6a
commit 1b8918351d
25 changed files with 729 additions and 380 deletions
--- a/database.sql
+++ b/database.sql
@ -1,6 +1,6 @@
 -- ------------------------------------------
 -- Friendica 2020.06-dev (Red Hot Poker)
-- DB_UPDATE_VERSION 1338
+-- DB_UPDATE_VERSION 1340
 -- ------------------------------------------


@ -1175,6 +1175,31 @@ CREATE TABLE IF NOT EXISTS `term` (
 	 INDEX `guid` (`guid`(64))
 ) DEFAULT COLLATE utf8mb4_general_ci COMMENT='item taxonomy (categories, tags, etc.) table';

+--
+-- TABLE tag
+--
+CREATE TABLE IF NOT EXISTS `tag` (
+	`id` int unsigned NOT NULL auto_increment COMMENT '',
+	`name` varchar(96) NOT NULL DEFAULT '' COMMENT '',
+	`url` varbinary(255) NOT NULL DEFAULT '' COMMENT '',
+	 PRIMARY KEY(`id`),
+	 UNIQUE INDEX `type_name_url` (`name`,`url`),
+	 INDEX `url` (`url`)
+) DEFAULT COLLATE utf8mb4_general_ci COMMENT='tags and mentions';
+
+--
+-- TABLE post-tag
+--
+CREATE TABLE IF NOT EXISTS `post-tag` (
+	`uri-id` int unsigned NOT NULL COMMENT 'Id of the item-uri table entry that contains the item uri',
+	`type` tinyint unsigned NOT NULL DEFAULT 0 COMMENT '',
+	`tid` int unsigned NOT NULL DEFAULT 0 COMMENT '',
+	`cid` int unsigned NOT NULL DEFAULT 0 COMMENT 'Contact id of the mentioned public contact',
+	 PRIMARY KEY(`uri-id`,`type`,`tid`,`cid`),
+	 INDEX `uri-id` (`tid`),
+	 INDEX `cid` (`tid`)
+) DEFAULT COLLATE utf8mb4_general_ci COMMENT='post relation to tags';
+
 --
 -- TABLE thread
 --
@ -1361,4 +1386,163 @@ CREATE TABLE IF NOT EXISTS `storage` (
 	 PRIMARY KEY(`id`)
 ) DEFAULT COLLATE utf8mb4_general_ci COMMENT='Data stored by Database storage backend';

+--
+-- VIEW tag-view
+--
+DROP VIEW IF EXISTS `tag-view`;
+CREATE VIEW `tag-view` AS SELECT 
+	`post-tag`.`uri-id` AS `uri-id`,
+	`item-uri`.`uri` AS `uri`,
+	`item-uri`.`guid` AS `guid`,
+	`post-tag`.`type` AS `type`,
+	`post-tag`.`tid` AS `tid`,
+	`post-tag`.`cid` AS `cid`,
+	CASE `cid` WHEN 0 THEN `tag`.`name` ELSE `contact`.`name` END AS `name`,
+	CASE `cid` WHEN 0 THEN `tag`.`url` ELSE `contact`.`url` END AS `url`
+	FROM `post-tag`
+			INNER JOIN `item-uri` ON `item-uri`.id = `post-tag`.`uri-id`
+			LEFT JOIN `tag` ON `post-tag`.`tid` = `tag`.`id`
+			LEFT JOIN `contact` ON `post-tag`.`cid` = `contact`.`id`;
+
+--
+-- VIEW owner-view
+--
+DROP VIEW IF EXISTS `owner-view`;
+CREATE VIEW `owner-view` AS SELECT 
+	`contact`.`id` AS `id`,
+	`contact`.`uid` AS `uid`,
+	`contact`.`created` AS `created`,
+	`contact`.`updated` AS `updated`,
+	`contact`.`self` AS `self`,
+	`contact`.`remote_self` AS `remote_self`,
+	`contact`.`rel` AS `rel`,
+	`contact`.`duplex` AS `duplex`,
+	`contact`.`network` AS `network`,
+	`contact`.`protocol` AS `protocol`,
+	`contact`.`name` AS `name`,
+	`contact`.`nick` AS `nick`,
+	`contact`.`location` AS `location`,
+	`contact`.`about` AS `about`,
+	`contact`.`keywords` AS `keywords`,
+	`contact`.`gender` AS `gender`,
+	`profile`.`xmpp` AS `xmpp`,
+	`contact`.`attag` AS `attag`,
+	`contact`.`avatar` AS `avatar`,
+	`contact`.`photo` AS `photo`,
+	`contact`.`thumb` AS `thumb`,
+	`contact`.`micro` AS `micro`,
+	`contact`.`site-pubkey` AS `site-pubkey`,
+	`contact`.`issued-id` AS `issued-id`,
+	`contact`.`dfrn-id` AS `dfrn-id`,
+	`contact`.`url` AS `url`,
+	`contact`.`nurl` AS `nurl`,
+	`contact`.`addr` AS `addr`,
+	`contact`.`alias` AS `alias`,
+	`contact`.`pubkey` AS `pubkey`,
+	`contact`.`prvkey` AS `prvkey`,
+	`contact`.`batch` AS `batch`,
+	`contact`.`request` AS `request`,
+	`contact`.`notify` AS `notify`,
+	`contact`.`poll` AS `poll`,
+	`contact`.`confirm` AS `confirm`,
+	`contact`.`poco` AS `poco`,
+	`contact`.`aes_allow` AS `aes_allow`,
+	`contact`.`ret-aes` AS `ret-aes`,
+	`contact`.`usehub` AS `usehub`,
+	`contact`.`subhub` AS `subhub`,
+	`contact`.`hub-verify` AS `hub-verify`,
+	`contact`.`last-update` AS `last-update`,
+	`contact`.`success_update` AS `success_update`,
+	`contact`.`failure_update` AS `failure_update`,
+	`contact`.`name-date` AS `name-date`,
+	`contact`.`uri-date` AS `uri-date`,
+	`contact`.`avatar-date` AS `avatar-date`,
+	`contact`.`id` AS `contact_id`,
+	`contact`.`avatar-date` AS `picdate`,
+	`contact`.`term-date` AS `term-date`,
+	`contact`.`last-item` AS `last-item`,
+	`contact`.`last-item` AS `lastitem_date`,
+	`contact`.`priority` AS `priority`,
+	`contact`.`blocked` AS `blocked`,
+	`contact`.`block_reason` AS `block_reason`,
+	`contact`.`readonly` AS `readonly`,
+	`contact`.`writable` AS `writable`,
+	`contact`.`forum` AS `forum`,
+	`contact`.`prv` AS `prv`,
+	`contact`.`contact-type` AS `contact-type`,
+	`contact`.`hidden` AS `hidden`,
+	`contact`.`archive` AS `archive`,
+	`contact`.`pending` AS `pending`,
+	`contact`.`deleted` AS `deleted`,
+	`contact`.`rating` AS `rating`,
+	`contact`.`unsearchable` AS `unsearchable`,
+	`contact`.`sensitive` AS `sensitive`,
+	`contact`.`baseurl` AS `baseurl`,
+	`contact`.`reason` AS `reason`,
+	`contact`.`closeness` AS `closeness`,
+	`contact`.`info` AS `info`,
+	`contact`.`profile-id` AS `profile-id`,
+	`contact`.`bdyear` AS `bdyear`,
+	`contact`.`bd` AS `bd`,
+	`user`.`guid` AS `guid`,
+	`user`.`theme` AS `theme`,
+	`user`.`language` AS `language`,
+	`user`.`email` AS `email`,
+	`user`.`prvkey` AS `uprvkey`,
+	`user`.`pubkey` AS `upubkey`,
+	`user`.`timezone` AS `timezone`,
+	`user`.`nickname` AS `nickname`,
+	`user`.`username` AS `username`,
+	`user`.`sprvkey` AS `sprvkey`,
+	`user`.`spubkey` AS `spubkey`,
+	`user`.`page-flags` AS `page-flags`,
+	`user`.`account-type` AS `account-type`,
+	`user`.`prvnets` AS `prvnets`,
+	`user`.`account_removed` AS `account_removed`,
+	`user`.`hidewall` AS `hidewall`,
+	`user`.`login_date` AS `login_date`,
+	`user`.`register_date` AS `register_date`,
+	`user`.`verified` AS `verified`,
+	`user`.`expire` AS `expire`,
+	`user`.`expire_notification_sent` AS `expire_notification_sent`,
+	`user`.`account_expired` AS `account_expired`,
+	`user`.`account_expires_on` AS `account_expires_on`,
+	`profile`.`publish` AS `publish`,
+	`profile`.`net-publish` AS `net-publish`,
+	`profile`.`hide-friends` AS `hide-friends`,
+	`profile`.`prv_keywords` AS `prv_keywords`,
+	`profile`.`pub_keywords` AS `pub_keywords`,
+	`profile`.`address` AS `address`,
+	`profile`.`locality` AS `locality`,
+	`profile`.`region` AS `region`,
+	`profile`.`postal-code` AS `postal-code`,
+	`profile`.`country-name` AS `country-name`,
+	`profile`.`homepage` AS `homepage`,
+	`profile`.`dob` AS `dob`
+	FROM `user`
+			INNER JOIN `contact` ON `contact`.`uid` = `user`.`uid` AND `contact`.`self`
+			INNER JOIN `profile` ON `profile`.`uid` = `user`.`uid`;
+
+--
+-- VIEW pending-view
+--
+DROP VIEW IF EXISTS `pending-view`;
+CREATE VIEW `pending-view` AS SELECT 
+	`register`.`id` AS `id`,
+	`register`.`hash` AS `hash`,
+	`register`.`created` AS `created`,
+	`register`.`uid` AS `uid`,
+	`register`.`password` AS `password`,
+	`register`.`language` AS `language`,
+	`register`.`note` AS `note`,
+	`contact`.`self` AS `self`,
+	`contact`.`name` AS `name`,
+	`contact`.`url` AS `url`,
+	`contact`.`micro` AS `micro`,
+	`user`.`email` AS `email`,
+	`contact`.`nick` AS `nick`
+	FROM `register`
+			INNER JOIN `contact` ON `register`.`uid` = `contact`.`uid`
+			INNER JOIN `user` ON `register`.`uid` = `user`.`uid`;
+

--- a/mod/display.php
+++ b/mod/display.php
@ -116,11 +116,7 @@ function display_init(App $a)
 		$nickname = str_replace(Strings::normaliseLink(DI::baseUrl()) . '/profile/', '', Strings::normaliseLink($profiledata['url']));

 		if (!empty($a->user['nickname']) && $nickname != $a->user['nickname']) {
-			$profile = DBA::fetchFirst("SELECT `profile`.* , `contact`.`avatar-date` AS picdate, `user`.* FROM `profile`
-				INNER JOIN `contact` on `contact`.`uid` = `profile`.`uid` INNER JOIN `user` ON `profile`.`uid` = `user`.`uid`
-				WHERE `user`.`nickname` = ? AND `contact`.`self` LIMIT 1",
-				$nickname
-			);
+			$profile = DBA::selectFirst('owner-view', [], ['nickname' => $nickname]);
 			if (DBA::isResult($profile)) {
 				$profiledata = $profile;
 			}
--- a/mod/poco.php
+++ b/mod/poco.php
@ -81,10 +81,7 @@ function poco_init(App $a) {
 	}

 	if (!$system_mode && !$global) {
-		$user = DBA::fetchFirst("SELECT `user`.`uid`, `user`.`nickname` FROM `user`
-			INNER JOIN `profile` ON `user`.`uid` = `profile`.`uid`
-			WHERE `user`.`nickname` = ? AND NOT `profile`.`hide-friends`",
-			$nickname);
+		$user = DBA::selectFirst('owner-view', ['uid', 'nickname'], ['nickname' => $nickname, 'hide-friends' => false]);
 		if (!DBA::isResult($user)) {
 			throw new \Friendica\Network\HTTPException\NotFoundException();
 		}
@ -147,16 +144,7 @@ function poco_init(App $a) {
 		);
 	} elseif ($system_mode) {
 		Logger::log("Start system mode query", Logger::DEBUG);
-		$contacts = q("SELECT `contact`.*, `profile`.`about` AS `pabout`, `profile`.`locality` AS `plocation`, `profile`.`pub_keywords`,
-				`profile`.`address` AS `paddress`, `profile`.`region` AS `pregion`,
-				`profile`.`postal-code` AS `ppostalcode`, `profile`.`country-name` AS `pcountry`, `user`.`account-type`
-			FROM `contact` INNER JOIN `profile` ON `profile`.`uid` = `contact`.`uid`
-				INNER JOIN `user` ON `user`.`uid` = `contact`.`uid`
-			WHERE `self` = 1 AND `profile`.`net-publish`
-			LIMIT %d, %d",
-			intval($startIndex),
-			intval($itemsPerPage)
-		);
+		$contacts = DBA::selectToArray('owner-view', [], ['net-publish' => true], ['limit' => [$startIndex, $itemsPerPage]]);
 	} else {
 		Logger::log("Start query for user " . $user['nickname'], Logger::DEBUG);
 		$contacts = q("SELECT * FROM `contact` WHERE `uid` = %d AND `blocked` = 0 AND `pending` = 0 AND `hidden` = 0 AND `archive` = 0
@ -233,28 +221,6 @@ function poco_init(App $a) {
 					}
 				}

-				if (($contact['about'] == "") && isset($contact['pabout'])) {
-					$contact['about'] = $contact['pabout'];
-				}
-				if ($contact['location'] == "") {
-					if (isset($contact['plocation'])) {
-						$contact['location'] = $contact['plocation'];
-					}
-					if (isset($contact['pregion']) && ( $contact['pregion'] != "")) {
-						if ($contact['location'] != "") {
-							$contact['location'] .= ", ";
-						}
-						$contact['location'] .= $contact['pregion'];
-					}
-
-					if (isset($contact['pcountry']) && ( $contact['pcountry'] != "")) {
-						if ($contact['location'] != "") {
-							$contact['location'] .= ", ";
-						}
-						$contact['location'] .= $contact['pcountry'];
-					}
-				}
-
 				if (($contact['keywords'] == "") && isset($contact['pub_keywords'])) {
 					$contact['keywords'] = $contact['pub_keywords'];
 				}
@ -346,21 +312,21 @@ function poco_init(App $a) {
 					$entry['address'] = [];

 					// Deactivated. It just reveals too much data. (Although its from the default profile)
-					//if (isset($rr['paddress']))
-					//	 $entry['address']['streetAddress'] = $rr['paddress'];
+					//if (isset($rr['address']))
+					//	 $entry['address']['streetAddress'] = $rr['address'];

-					if (isset($contact['plocation'])) {
-						$entry['address']['locality'] = $contact['plocation'];
+					if (isset($contact['locality'])) {
+						$entry['address']['locality'] = $contact['locality'];
 					}
-					if (isset($contact['pregion'])) {
-						$entry['address']['region'] = $contact['pregion'];
+					if (isset($contact['region'])) {
+						$entry['address']['region'] = $contact['region'];
 					}
 					// See above
-					//if (isset($rr['ppostalcode']))
-					//	 $entry['address']['postalCode'] = $rr['ppostalcode'];
+					//if (isset($rr['postal-code']))
+					//	 $entry['address']['postalCode'] = $rr['postal-code'];

-					if (isset($contact['pcountry'])) {
-						$entry['address']['country'] = $contact['pcountry'];
+					if (isset($contact['country'])) {
+						$entry['address']['country'] = $contact['country'];
 					}
 				}

--- a/mod/wall_upload.php
+++ b/mod/wall_upload.php
@ -46,14 +46,8 @@ function wall_upload_post(App $a, $desktopmode = true)
 	if ($a->argc > 1) {
 		if (empty($_FILES['media'])) {
 			$nick = $a->argv[1];			
-			$r = q("SELECT `user`.*, `contact`.`id` FROM `user`
-				INNER JOIN `contact` on `user`.`uid` = `contact`.`uid`
-				WHERE `user`.`nickname` = '%s' AND `user`.`blocked` = 0
-				AND `contact`.`self` = 1 LIMIT 1",
-				DBA::escape($nick)
-			);
-
-			if (!DBA::isResult($r)) {
+			$user = DBA::selectFirst('owner-view', ['id', 'uid', 'nickname', 'page-flags'], ['nickname' => $nick, 'blocked' => false]);
+			if (!DBA::isResult($user)) {
 				if ($r_json) {
 					echo json_encode(['error' => DI::l10n()->t('Invalid request.')]);
 					exit();
@ -62,12 +56,7 @@ function wall_upload_post(App $a, $desktopmode = true)
 			}
 		} else {
 			$user_info = api_get_user($a);
-			$r = q("SELECT `user`.*, `contact`.`id` FROM `user`
-				INNER JOIN `contact` on `user`.`uid` = `contact`.`uid`
-				WHERE `user`.`nickname` = '%s' AND `user`.`blocked` = 0
-				AND `contact`.`self` = 1 LIMIT 1",
-				DBA::escape($user_info['screen_name'])
-			);
+			$user = DBA::selectFirst('owner-view', ['id', 'uid', 'nickname', 'page-flags'], ['nickname' => $user_info['screen_name'], 'blocked' => false]);
 		}
 	} else {
 		if ($r_json) {
@ -83,10 +72,10 @@ function wall_upload_post(App $a, $desktopmode = true)
 	$can_post  = false;
 	$visitor   = 0;

-	$page_owner_uid   = $r[0]['uid'];
-	$default_cid      = $r[0]['id'];
-	$page_owner_nick  = $r[0]['nickname'];
-	$community_page   = (($r[0]['page-flags'] == User::PAGE_FLAGS_COMMUNITY) ? true : false);
+	$page_owner_uid   = $user['uid'];
+	$default_cid      = $user['id'];
+	$page_owner_nick  = $user['nickname'];
+	$community_page   = (($user['page-flags'] == User::PAGE_FLAGS_COMMUNITY) ? true : false);

 	if ((local_user()) && (local_user() == $page_owner_uid)) {
 		$can_post = true;
--- a/src/Console/User.php
+++ b/src/Console/User.php
@ -361,7 +361,7 @@ HELP;
 						$contact['email'],
 						Temporal::getRelativeDate($contact['created']),
 						Temporal::getRelativeDate($contact['login_date']),
-						Temporal::getRelativeDate($contact['lastitem_date']),
+						Temporal::getRelativeDate($contact['last-item']),
 					]);
 				}
 				$this->out($table->getTable());
--- a/src/Core/Worker.php
+++ b/src/Core/Worker.php
@ -684,7 +684,7 @@ class Worker
 				self::$db_duration_stat += (microtime(true) - $stamp);
 				while ($entry = DBA::fetch($jobs)) {
 					$stamp = (float)microtime(true);
-					$processes = DBA::p("SELECT COUNT(*) AS `running` FROM `process` INNER JOIN `workerqueue` ON `workerqueue`.`pid` = `process`.`pid` WHERE NOT `done` AND `priority` = ?", $entry["priority"]);
+					$processes = DBA::p("SELECT COUNT(*) AS `running` FROM `workerqueue-view` WHERE `priority` = ?", $entry["priority"]);
 					self::$db_duration += (microtime(true) - $stamp);
 					self::$db_duration_stat += (microtime(true) - $stamp);
 					if ($process = DBA::fetch($processes)) {
@ -698,7 +698,7 @@ class Worker
 			} else {
 				$waiting_processes =  self::totalEntries();
 				$stamp = (float)microtime(true);
-				$jobs = DBA::p("SELECT COUNT(*) AS `running`, `priority` FROM `process` INNER JOIN `workerqueue` ON `workerqueue`.`pid` = `process`.`pid` AND NOT `done` GROUP BY `priority` ORDER BY `priority`");
+				$jobs = DBA::p("SELECT COUNT(*) AS `running`, `priority` FROM `workerqueue-view` GROUP BY `priority` ORDER BY `priority`");
 				self::$db_duration += (microtime(true) - $stamp);
 				self::$db_duration_stat += (microtime(true) - $stamp);

@ -839,9 +839,7 @@ class Worker
 		$running = [];
 		$running_total = 0;
 		$stamp = (float)microtime(true);
-		$processes = DBA::p("SELECT COUNT(DISTINCT(`process`.`pid`)) AS `running`, `priority` FROM `process`
-			INNER JOIN `workerqueue` ON `workerqueue`.`pid` = `process`.`pid`
-			WHERE NOT `done` GROUP BY `priority`");
+		$processes = DBA::p("SELECT COUNT(DISTINCT(`pid`)) AS `running`, `priority` FROM `workerqueue-view` GROUP BY `priority`");
 		self::$db_duration += (microtime(true) - $stamp);
 		while ($process = DBA::fetch($processes)) {
 			$running[$process['priority']] = $process['running'];
--- a/src/Database/DBStructure.php
+++ b/src/Database/DBStructure.php
@ -112,10 +112,12 @@ class DBStructure

 			echo "\n";
 		}
+
+		View::printStructure($basePath);
 	}

 	/**
-	 * Loads the database structure definition from the config/dbstructure.config.php file.
+	 * Loads the database structure definition from the static/dbstructure.config.php file.
 	 * On first pass, defines DB_UPDATE_VERSION constant.
 	 *
 	 * @see static/dbstructure.config.php
@ -594,6 +596,8 @@ class DBStructure
 			}
 		}

+		View::create($verbose, $action);
+
 		if ($action && !$install) {
 			DI::config()->set('system', 'maintenance', 0);
 			DI::config()->set('system', 'maintenance_reason', '');
--- a/src/Database/View.php
+++ b/src/Database/View.php
@ -0,0 +1,137 @@
+<?php
+/**
+ * @copyright Copyright (C) 2020, Friendica
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace Friendica\Database;
+
+use Exception;
+use Friendica\Core\Hook;
+use Friendica\DI;
+
+class View
+{
+	/**
+	 * view definition loaded from static/dbview.config.php
+	 *
+	 * @var array
+	 */
+	private static $definition = [];
+
+	/**
+	 * Loads the database structure definition from the static/dbview.config.php file.
+	 * On first pass, defines DB_UPDATE_VERSION constant.
+	 *
+	 * @see static/dbview.config.php
+	 * @param boolean $with_addons_structure Whether to tack on addons additional tables
+	 * @param string  $basePath              The base path of this application
+	 * @return array
+	 * @throws Exception
+	 */
+	public static function definition($basePath = '', $with_addons_structure = true)
+	{
+		if (!self::$definition) {
+			if (empty($basePath)) {
+				$basePath = DI::app()->getBasePath();
+			}
+
+			$filename = $basePath . '/static/dbview.config.php';
+
+			if (!is_readable($filename)) {
+				throw new Exception('Missing database view config file static/dbview.config.php');
+			}
+
+			$definition = require $filename;
+
+			if (!$definition) {
+				throw new Exception('Corrupted database view config file static/dbview.config.php');
+			}
+
+			self::$definition = $definition;
+		} else {
+			$definition = self::$definition;
+		}
+
+		if ($with_addons_structure) {
+			Hook::callAll('dbview_definition', $definition);
+		}
+
+		return $definition;
+	}
+
+	public static function create(bool $verbose, bool $action)
+	{
+		$definition = self::definition();
+
+		foreach ($definition as $name => $structure) {
+			self::createview($name, $structure, $verbose, $action);
+		}
+	}
+
+	public static function printStructure($basePath)
+	{
+		$database = self::definition($basePath, false);
+
+		foreach ($database AS $name => $structure) {
+			echo "--\n";
+			echo "-- VIEW $name\n";
+			echo "--\n";
+			self::createView($name, $structure, true, false);
+
+			echo "\n";
+		}
+	}
+
+	private static function createview($name, $structure, $verbose, $action)
+	{
+		$r = true;
+
+		$sql_rows = [];
+		foreach ($structure["fields"] AS $fieldname => $origin) {
+			if (is_string($origin)) {
+				$sql_rows[] = $origin . " AS `" . DBA::escape($fieldname) . "`";
+			} elseif (is_array($origin) && (sizeof($origin) == 2)) {
+				$sql_rows[] = "`" . DBA::escape($origin[0]) . "`.`" . DBA::escape($origin[1]) . "` AS `" . DBA::escape($fieldname) . "`";
+			}
+		}
+
+		$sql = sprintf("DROP VIEW IF EXISTS `%s`", DBA::escape($name));
+
+		if ($verbose) {
+			echo $sql . ";\n";
+		}
+
+		if ($action) {
+			DBA::e($sql);
+		}
+
+		$sql = sprintf("CREATE VIEW `%s` AS SELECT \n\t", DBA::escape($name)) .
+			implode(",\n\t", $sql_rows) . "\n\t" . $structure['query'];
+	
+		if ($verbose) {
+			echo $sql . ";\n";
+		}
+
+		if ($action) {
+			$r = DBA::e($sql);
+		}
+
+		return $r;
+	}
+}
--- a/src/Model/Item.php
+++ b/src/Model/Item.php
@ -2563,7 +2563,8 @@ class Item
 			Contact::unmarkForArchival($contact);
 		}

-		$update = (($arr['private'] != self::PRIVATE) && ((($arr['author-link'] ?? '') === ($arr['owner-link'] ?? '')) || ($arr["parent-uri"] === $arr["uri"])));
+		/// @todo On private posts we could obfuscate the date
+		$update = ($arr['private'] != self::PRIVATE);

 		// Is it a forum? Then we don't care about the rules from above
 		if (!$update && in_array($arr["network"], [Protocol::ACTIVITYPUB, Protocol::DFRN]) && ($arr["parent-uri"] === $arr["uri"])) {
@ -2573,8 +2574,15 @@ class Item
 		}

 		if ($update) {
-			DBA::update('contact', ['success_update' => $arr['received'], 'last-item' => $arr['received']],
-				['id' => $arr['contact-id']]);
+			// The "self" contact id is used (for example in the connectors) when the contact is unknown
+			// So we have to ensure to only update the last item when it had been our own post,
+			// or it had been done by a "regular" contact.
+			if (!empty($arr['wall'])) {
+				$condition = ['id' => $arr['contact-id']];
+			} else { 
+				$condition = ['id' => $arr['contact-id'], 'self' => false];
+			}
+			DBA::update('contact', ['success_update' => $arr['received'], 'last-item' => $arr['received']], $condition);
 		}
 		// Now do the same for the system wide contacts with uid=0
 		if ($arr['private'] != self::PRIVATE) {
--- a/src/Model/Profile.php
+++ b/src/Model/Profile.php
@ -234,19 +234,7 @@ class Profile
 	 */
 	public static function getByNickname($nickname, $uid = 0)
 	{
-		$profile = DBA::fetchFirst(
-			"SELECT `contact`.`id` AS `contact_id`, `contact`.`photo` AS `contact_photo`,
-				`contact`.`thumb` AS `contact_thumb`, `contact`.`micro` AS `contact_micro`,
-				`profile`.*,
-				`contact`.`avatar-date` AS picdate, `contact`.`addr`, `contact`.`url`, `user`.*
-			FROM `profile`
-			INNER JOIN `contact` on `contact`.`uid` = `profile`.`uid` AND `contact`.`self`
-			INNER JOIN `user` ON `profile`.`uid` = `user`.`uid`
-			WHERE `user`.`nickname` = ? AND `profile`.`uid` = ? LIMIT 1",
-			$nickname,
-			intval($uid)
-		);
-
+		$profile = DBA::selectFirst('owner-view', [], ['nickname' => $nickname, 'uid' => $uid]);
 		return $profile;
 	}

@ -399,9 +387,9 @@ class Profile
 				'fullname' => $profile['name'],
 				'firstname' => $firstname,
 				'lastname' => $lastname,
-				'photo300' => $profile['contact_photo'] ?? '',
-				'photo100' => $profile['contact_thumb'] ?? '',
-				'photo50' => $profile['contact_micro'] ?? '',
+				'photo300' => $profile['photo'] ?? '',
+				'photo100' => $profile['thumb'] ?? '',
+				'photo50' => $profile['micro'] ?? '',
 			];
 		} else {
 			$diaspora = false;
@ -410,18 +398,15 @@ class Profile
 		$contact_block = '';
 		$updated = '';
 		$contact_count = 0;
+
+		if (!empty($profile['last-item'])) {
+			$updated = date('c', strtotime($profile['last-item']));
+		}
+
 		if (!$block) {
 			$contact_block = ContactBlock::getHTML($a->profile);

 			if (is_array($a->profile) && !$a->profile['hide-friends']) {
-				$r = q(
-					"SELECT `gcontact`.`updated` FROM `contact` INNER JOIN `gcontact` WHERE `gcontact`.`nurl` = `contact`.`nurl` AND `self` AND `uid` = %d LIMIT 1",
-					intval($a->profile['uid'])
-				);
-				if (DBA::isResult($r)) {
-					$updated = date('c', strtotime($r[0]['updated']));
-				}
-
 				$contact_count = DBA::count('contact', [
 					'uid' => $profile['uid'],
 					'self' => false,
@ -902,87 +887,37 @@ class Profile
 	 */
 	public static function searchProfiles($start = 0, $count = 100, $search = null)
 	{
-		$publish = (DI::config()->get('system', 'publish_all') ? '' : "`publish` = 1");
-		$total = 0;
-
 		if (!empty($search)) {
+			$publish = (DI::config()->get('system', 'publish_all') ? '' : "AND `publish` ");
 			$searchTerm = '%' . $search . '%';
-			$cnt = DBA::fetchFirst("SELECT COUNT(*) AS `total`
-				FROM `profile`
-				LEFT JOIN `user` ON `user`.`uid` = `profile`.`uid`
-				WHERE $publish AND NOT `user`.`blocked` AND NOT `user`.`account_removed`
-				AND ((`profile`.`name` LIKE ?) OR
-				(`user`.`nickname` LIKE ?) OR
-				(`profile`.`about` LIKE ?) OR
-				(`profile`.`locality` LIKE ?) OR
-				(`profile`.`region` LIKE ?) OR
-				(`profile`.`country-name` LIKE ?) OR
-				(`profile`.`pub_keywords` LIKE ?) OR
-				(`profile`.`prv_keywords` LIKE ?))",
-				$searchTerm, $searchTerm, $searchTerm, $searchTerm, $searchTerm, $searchTerm, $searchTerm, $searchTerm,
-				$searchTerm, $searchTerm, $searchTerm, $searchTerm, $searchTerm, $searchTerm, $searchTerm);
+			$condition = ["NOT `blocked` AND NOT `account_removed`
+				$publish
+				AND ((`name` LIKE ?) OR
+				(`nickname` LIKE ?) OR
+				(`about` LIKE ?) OR
+				(`locality` LIKE ?) OR
+				(`region` LIKE ?) OR
+				(`country-name` LIKE ?) OR
+				(`pub_keywords` LIKE ?) OR
+				(`prv_keywords` LIKE ?))",
+				$searchTerm, $searchTerm, $searchTerm, $searchTerm,
+				$searchTerm, $searchTerm, $searchTerm, $searchTerm];
 		} else {
-			$cnt = DBA::fetchFirst("SELECT COUNT(*) AS `total`
-				FROM `profile`
-				LEFT JOIN `user` ON `user`.`uid` = `profile`.`uid`
-				WHERE $publish AND NOT `user`.`blocked` AND NOT `user`.`account_removed`");
-		}
-
-		if (DBA::isResult($cnt)) {
-			$total = $cnt['total'];
-		}
-
-		$order = " ORDER BY `name` ASC ";
-		$profiles = [];
-
-		// If nothing found, don't try to select details
-		if ($total > 0) {
-			if (!empty($search)) {
-				$searchTerm = '%' . $search . '%';
-
-				$profiles = DBA::p("SELECT `profile`.*, `profile`.`uid` AS `profile_uid`, `user`.`nickname`, `user`.`timezone` , `user`.`page-flags`,
-			`contact`.`addr`, `contact`.`url` AS `profile_url`
-			FROM `profile`
-			LEFT JOIN `user` ON `user`.`uid` = `profile`.`uid`
-			LEFT JOIN `contact` ON `contact`.`uid` = `user`.`uid`
-			WHERE $publish AND NOT `user`.`blocked` AND NOT `user`.`account_removed` AND `contact`.`self`
-			AND ((`profile`.`name` LIKE ?) OR
-				(`user`.`nickname` LIKE ?) OR
-				(`profile`.`about` LIKE ?) OR
-				(`profile`.`locality` LIKE ?) OR
-				(`profile`.`region` LIKE ?) OR
-				(`profile`.`country-name` LIKE ?) OR
-				(`profile`.`pub_keywords` LIKE ?) OR
-				(`profile`.`prv_keywords` LIKE ?))
-			$order LIMIT ?,?",
-					$searchTerm, $searchTerm, $searchTerm, $searchTerm, $searchTerm, $searchTerm, $searchTerm, $searchTerm,
-					$searchTerm, $searchTerm, $searchTerm, $searchTerm, $searchTerm, $searchTerm, $searchTerm,
-					$start, $count
-				);
-			} else {
-				$profiles = DBA::p("SELECT `profile`.*, `profile`.`uid` AS `profile_uid`, `user`.`nickname`, `user`.`timezone` , `user`.`page-flags`,
-			`contact`.`addr`, `contact`.`url` AS `profile_url`
-			FROM `profile`
-			LEFT JOIN `user` ON `user`.`uid` = `profile`.`uid`
-			LEFT JOIN `contact` ON `contact`.`uid` = `user`.`uid`
-			WHERE $publish AND NOT `user`.`blocked` AND NOT `user`.`account_removed` AND `contact`.`self`
-			$order LIMIT ?,?",
-					$start, $count
-				);
+			$condition = ['blocked' => false, 'account_removed' => false];
+			if (!DI::config()->get('system', 'publish_all')) {
+				$condition['publish'] = true;
 			}
 		}

-		if (DBA::isResult($profiles) && $total > 0) {
-			return [
-				'total'   => $total,
-				'entries' => DBA::toArray($profiles),
-			];
+		$total = DBA::count('owner-view', $condition);

+		// If nothing found, don't try to select details
+		if ($total > 0) {
+			$profiles = DBA::selectToArray('owner-view', [], $condition, ['order' => ['name'], 'limit' => [$start, $count]]);
 		} else {
-			return [
-				'total'   => $total,
-				'entries' => [],
-			];
+			$profiles = [];
 		}
+
+		return ['total' => $total, 'entries' => $profiles];
 	}
 }
--- a/src/Model/Register.php
+++ b/src/Model/Register.php
@ -42,15 +42,7 @@ class Register
 	 */
 	public static function getPending($start = 0, $count = Pager::ITEMS_PER_PAGE)
 	{
-		$stmt = DBA::p(
-			"SELECT `register`.*, `contact`.`name`, `contact`.`url`, `contact`.`micro`, `user`.`email`, `contact`.`nick`
-			FROM `register`
-			INNER JOIN `contact` ON `register`.`uid` = `contact`.`uid`
-			INNER JOIN `user` ON `register`.`uid` = `user`.`uid`
-			LIMIT ?, ?", $start, $count
-		);
-
-		return DBA::toArray($stmt);
+		return DBA::selectToArray('pending-view', [], [], ['limit' => [$start, $count]]);
 	}

 	/**
@ -64,14 +56,7 @@ class Register
 	 */
 	public static function getPendingForUser(int $uid)
 	{
-		return DBA::fetchFirst(
-			"SELECT `register`.*, `contact`.`name`, `contact`.`url`, `contact`.`micro`, `user`.`email`
-			FROM `register`
-			INNER JOIN `contact` ON `register`.`uid` = `contact`.`uid`
-			INNER JOIN `user` ON `register`.`uid` = `user`.`uid`
-			WHERE `register`.uid = ?",
-			$uid
-		);
+		return DBA::selectToArray('pending-view', [], ['uid' => $uid]);
 	}

 	/**
@ -82,13 +67,7 @@ class Register
 	 */
 	public static function getPendingCount()
 	{
-		$register = DBA::fetchFirst(
-			"SELECT COUNT(*) AS `count`
-			FROM `register`
-			INNER JOIN `contact` ON `register`.`uid` = `contact`.`uid` AND `contact`.`self`"
-		);
-
-		return $register['count'];
+		return DBA::count('pending-view', ['self' => true]);
 	}

 	/**
--- a/src/Model/Tag.php
+++ b/src/Model/Tag.php
@ -231,13 +231,18 @@ class Tag
 	 */
 	public static function remove(int $uriid, int $type, string $name, string $url = '')
 	{
-		$tag = DBA::fetchFirst("SELECT `id` FROM `tag` INNER JOIN `post-tag` ON `post-tag`.`tid` = `tag`.`id`
-			WHERE `uri-id` = ? AND `type` = ? AND `name` = ? AND `url` = ?", $uriid, $type, $name, $url);
+		$condition = ['uri-id' => $uriid, 'type' => $type, 'url' => $url];
+		if ($type == self::HASHTAG) {
+			$condition['name'] = $name;
+		}
+
+		$tag = DBA::selectFirst('tag-view', ['tid', 'cid'], $condition);
 		if (!DBA::isResult($tag)) {
 			return;
 		}
-		Logger::info('Removing tag/mention', ['uri-id' => $uriid, 'tid' => $tag['id'], 'name' => $name, 'url' => $url, 'callstack' => System::callstack(8)]);
-		DBA::delete('post-tag', ['uri-id' => $uriid, 'tid' => $tag['id']]);
+
+		Logger::info('Removing tag/mention', ['uri-id' => $uriid, 'tid' => $tag['tid'], 'name' => $name, 'url' => $url, 'callstack' => System::callstack(8)]);
+		DBA::delete('post-tag', ['uri-id' => $uriid, 'type' => $type, 'tid' => $tag['tid'], 'cid' => $tag['cid']]);
 	}

 	/**
--- a/src/Model/User.php
+++ b/src/Model/User.php
@ -195,66 +195,50 @@ class User
 	 */
 	public static function getOwnerDataById($uid, $check_valid = true)
 	{
-		$r = DBA::fetchFirst(
-			"SELECT
-			`contact`.*,
-			`user`.`prvkey` AS `uprvkey`,
-			`user`.`timezone`,
-			`user`.`nickname`,
-			`user`.`sprvkey`,
-			`user`.`spubkey`,
-			`user`.`page-flags`,
-			`user`.`account-type`,
-			`user`.`prvnets`,
-			`user`.`account_removed`,
-			`user`.`hidewall`
-			FROM `contact`
-			INNER JOIN `user`
-				ON `user`.`uid` = `contact`.`uid`
-			WHERE `contact`.`uid` = ?
-			AND `contact`.`self`
-			LIMIT 1",
-			$uid
-		);
-		if (!DBA::isResult($r)) {
-			return false;
+		$owner = DBA::selectFirst('owner-view', [], ['uid' => $uid]);
+		if (!DBA::isResult($owner)) {
+			if (!DBA::exists('user', ['uid' => $uid]) || !$check_valid) {
+				return false;
+			}
+			Contact::createSelfFromUserId($uid);
+			$owner = self::getOwnerDataById($uid, false);
 		}

-		if (empty($r['nickname'])) {
+		if (empty($owner['nickname'])) {
 			return false;
 		}

 		if (!$check_valid) {
-			return $r;
+			return $owner;
 		}

 		// Check if the returned data is valid, otherwise fix it. See issue #6122

 		// Check for correct url and normalised nurl
-		$url = DI::baseUrl() . '/profile/' . $r['nickname'];
-		$repair = ($r['url'] != $url) || ($r['nurl'] != Strings::normaliseLink($r['url']));
+		$url = DI::baseUrl() . '/profile/' . $owner['nickname'];
+		$repair = ($owner['url'] != $url) || ($owner['nurl'] != Strings::normaliseLink($owner['url']));

 		if (!$repair) {
 			// Check if "addr" is present and correct
-			$addr = $r['nickname'] . '@' . substr(DI::baseUrl(), strpos(DI::baseUrl(), '://') + 3);
-			$repair = ($addr != $r['addr']);
+			$addr = $owner['nickname'] . '@' . substr(DI::baseUrl(), strpos(DI::baseUrl(), '://') + 3);
+			$repair = ($addr != $owner['addr']);
 		}

 		if (!$repair) {
 			// Check if the avatar field is filled and the photo directs to the correct path
 			$avatar = Photo::selectFirst(['resource-id'], ['uid' => $uid, 'profile' => true]);
 			if (DBA::isResult($avatar)) {
-				$repair = empty($r['avatar']) || !strpos($r['photo'], $avatar['resource-id']);
+				$repair = empty($owner['avatar']) || !strpos($owner['photo'], $avatar['resource-id']);
 			}
 		}

 		if ($repair) {
 			Contact::updateSelfFromUserID($uid);
 			// Return the corrected data and avoid a loop
-			$r = self::getOwnerDataById($uid, false);
+			$owner = self::getOwnerDataById($uid, false);
 		}

-		return $r;
+		return $owner;
 	}

 	/**
@ -1290,17 +1274,10 @@ class User
 			'active_users_monthly'  => 0,
 		];

-		$userStmt = DBA::p("SELECT `user`.`uid`, `user`.`login_date`, `contact`.`last-item`
-			FROM `user`
-			INNER JOIN `contact` ON `contact`.`uid` = `user`.`uid` AND `contact`.`self`
-			WHERE `user`.`verified`
-				AND `user`.`login_date` > ?
-				AND NOT `user`.`blocked`
-				AND NOT `user`.`account_removed`
-				AND NOT `user`.`account_expired`",
-				DBA::NULL_DATETIME
-		);
-
+		$userStmt = DBA::select('owner-view', ['uid', 'login_date', 'last-item'],
+			["`verified` AND `login_date` > ? AND NOT `blocked`
+			AND NOT `account_removed` AND NOT `account_expired`",
+			DBA::NULL_DATETIME]);
 		if (!DBA::isResult($userStmt)) {
 			return $statistics;
 		}
@ -1332,39 +1309,27 @@ class User
 	 * @param int    $count Count of the items per page (Default is @see Pager::ITEMS_PER_PAGE)
 	 * @param string $type  The type of users, which should get (all, bocked, removed)
 	 * @param string $order Order of the user list (Default is 'contact.name')
-	 * @param string $order_direction Order direction (Default is ASC)
+	 * @param bool   $descending Order direction (Default is ascending)
 	 *
 	 * @return array The list of the users
 	 * @throws Exception
 	 */
-	public static function getList($start = 0, $count = Pager::ITEMS_PER_PAGE, $type = 'all', $order = 'contact.name', $order_direction = '+')
+	public static function getList($start = 0, $count = Pager::ITEMS_PER_PAGE, $type = 'all', $order = 'name', bool $descending = false)
 	{
-		$sql_order           = '`' . str_replace('.', '`.`', $order) . '`';
-		$sql_order_direction = ($order_direction === '+') ? 'ASC' : 'DESC';
-
+		$param = ['limit' => [$start, $count], 'order' => [$order => $descending]];
+		$condition = [];
 		switch ($type) {
 			case 'active':
-				$sql_extra = 'AND `user`.`blocked` = 0';
+				$condition['blocked'] = false;
 				break;
 			case 'blocked':
-				$sql_extra = 'AND `user`.`blocked` = 1';
+				$condition['blocked'] = true;
 				break;
 			case 'removed':
-				$sql_extra = 'AND `user`.`account_removed` = 1';
-				break;
-			case 'all':
-			default:
-				$sql_extra = '';
+				$condition['account_removed'] = true;
 				break;
 		}

-		$usersStmt = DBA::p("SELECT `user`.*, `contact`.`name`, `contact`.`url`, `contact`.`micro`, `user`.`account_expired`, `contact`.`last-item` AS `lastitem_date`, `contact`.`nick`, `contact`.`created`
-				FROM `user`
-				INNER JOIN `contact` ON `contact`.`uid` = `user`.`uid` AND `contact`.`self`
-				WHERE `user`.`verified` $sql_extra
-				ORDER BY $sql_order $sql_order_direction LIMIT ?, ?", $start, $count
-		);
-
-		return DBA::toArray($usersStmt);
+		return DBA::selectToArray('owner-view', [], $condition, $param);
 	}
 }
--- a/src/Module/Admin/Users.php
+++ b/src/Module/Admin/Users.php
@ -157,15 +157,15 @@ class Users extends BaseAdmin
 		$pager = new Pager(DI::l10n(), DI::args()->getQueryString(), 100);

 		$valid_orders = [
-			'contact.name',
-			'user.email',
-			'user.register_date',
-			'user.login_date',
-			'lastitem_date',
-			'user.page-flags'
+			'name',
+			'email',
+			'register_date',
+			'login_date',
+			'last-item',
+			'page-flags'
 		];

-		$order = 'contact.name';
+		$order = 'name';
 		$order_direction = '+';
 		if (!empty($_GET['o'])) {
 			$new_order = $_GET['o'];
@ -179,7 +179,7 @@ class Users extends BaseAdmin
 			}
 		}

-		$users = User::getList($pager->getStart(), $pager->getItemsPerPage(), 'all', $order, $order_direction);
+		$users = User::getList($pager->getStart(), $pager->getItemsPerPage(), 'all', $order, ($order_direction == '-'));

 		$adminlist = explode(',', str_replace(' ', '', DI::config()->get('config', 'admin_email')));
 		$_setup_users = function ($e) use ($adminlist) {
@ -206,7 +206,7 @@ class Users extends BaseAdmin

 			$e['register_date'] = Temporal::getRelativeDate($e['register_date']);
 			$e['login_date'] = Temporal::getRelativeDate($e['login_date']);
-			$e['lastitem_date'] = Temporal::getRelativeDate($e['lastitem_date']);
+			$e['last-item'] = Temporal::getRelativeDate($e['last-item']);
 			$e['is_admin'] = in_array($e['email'], $adminlist);
 			$e['is_deletable'] = (intval($e['uid']) != local_user());
 			$e['deleted'] = ($e['account_removed'] ? Temporal::getRelativeDate($e['account_expires_on']) : False);
--- a/src/Module/NoScrape.php
+++ b/src/Module/NoScrape.php
@ -85,22 +85,11 @@ class NoScrape extends BaseModule
 		$json_info['tags']     = $keywords;
 		$json_info['language'] = $a->profile['language'];

-		if (!($a->profile['hide-friends'] ?? false)) {
-			$stmt = DBA::p(
-				"SELECT `gcontact`.`updated`
-				FROM `contact`
-				INNER JOIN `gcontact`
-				WHERE `gcontact`.`nurl` = `contact`.`nurl`
-				  AND `self`
-				  AND `uid` = ?
-				LIMIT 1",
-				intval($a->profile['uid'])
-			);
-			if ($gcontact = DBA::fetch($stmt)) {
-				$json_info["updated"] = date("c", strtotime($gcontact['updated']));
-			}
-			DBA::close($stmt);
+		if (!empty($a->profile['last-item'])) {
+			$json_info['updated'] = date("c", strtotime($a->profile['last-item']));
+		}

+		if (!($a->profile['hide-friends'] ?? false)) {
 			$json_info['contacts'] = DBA::count('contact',
 				[
 					'uid'     => $a->profile['uid'],
--- a/src/Module/Profile/Profile.php
+++ b/src/Module/Profile/Profile.php
@ -299,10 +299,10 @@ class Profile extends BaseProfile
 			$htmlhead .= '<meta content="noindex, noarchive" name="robots" />' . "\n";
 		}

-		$htmlhead .= '<link rel="alternate" type="application/atom+xml" href="' . $baseUrl . '/dfrn_poll/' . $nickname . '" title="DFRN: ' . DI::l10n()->t('%s\'s timeline', $profile['username']) . '"/>' . "\n";
-		$htmlhead .= '<link rel="alternate" type="application/atom+xml" href="' . $baseUrl . '/feed/' . $nickname . '/" title="' . DI::l10n()->t('%s\'s posts', $profile['username']) . '"/>' . "\n";
-		$htmlhead .= '<link rel="alternate" type="application/atom+xml" href="' . $baseUrl . '/feed/' . $nickname . '/comments" title="' . DI::l10n()->t('%s\'s comments', $profile['username']) . '"/>' . "\n";
-		$htmlhead .= '<link rel="alternate" type="application/atom+xml" href="' . $baseUrl . '/feed/' . $nickname . '/activity" title="' . DI::l10n()->t('%s\'s timeline', $profile['username']) . '"/>' . "\n";
+		$htmlhead .= '<link rel="alternate" type="application/atom+xml" href="' . $baseUrl . '/dfrn_poll/' . $nickname . '" title="DFRN: ' . DI::l10n()->t('%s\'s timeline', $profile['name']) . '"/>' . "\n";
+		$htmlhead .= '<link rel="alternate" type="application/atom+xml" href="' . $baseUrl . '/feed/' . $nickname . '/" title="' . DI::l10n()->t('%s\'s posts', $profile['name']) . '"/>' . "\n";
+		$htmlhead .= '<link rel="alternate" type="application/atom+xml" href="' . $baseUrl . '/feed/' . $nickname . '/comments" title="' . DI::l10n()->t('%s\'s comments', $profile['name']) . '"/>' . "\n";
+		$htmlhead .= '<link rel="alternate" type="application/atom+xml" href="' . $baseUrl . '/feed/' . $nickname . '/activity" title="' . DI::l10n()->t('%s\'s timeline', $profile['name']) . '"/>' . "\n";
 		$uri = urlencode('acct:' . $profile['nickname'] . '@' . $baseUrl->getHostname() . ($baseUrl->getUrlPath() ? '/' . $baseUrl->getUrlPath() : ''));
 		$htmlhead .= '<link rel="lrdd" type="application/xrd+xml" href="' . $baseUrl . '/xrd/?uri=' . $uri . '" />' . "\n";
 		header('Link: <' . $baseUrl . '/xrd/?uri=' . $uri . '>; rel="lrdd"; type="application/xrd+xml"', false);
--- a/src/Module/Profile/Status.php
+++ b/src/Module/Profile/Status.php
@ -53,10 +53,10 @@ class Status extends BaseProfile
 			DI::page()['htmlhead'] .= '<meta content="noindex, noarchive" name="robots" />' . "\n";
 		}

-		DI::page()['htmlhead'] .= '<link rel="alternate" type="application/atom+xml" href="' . DI::baseUrl() . '/dfrn_poll/' . $parameters['nickname'] . '" title="DFRN: ' . DI::l10n()->t('%s\'s timeline', $a->profile['username']) . '"/>' . "\n";
-		DI::page()['htmlhead'] .= '<link rel="alternate" type="application/atom+xml" href="' . DI::baseUrl() . '/feed/' . $parameters['nickname'] . '/" title="' . DI::l10n()->t('%s\'s posts', $a->profile['username']) . '"/>' . "\n";
-		DI::page()['htmlhead'] .= '<link rel="alternate" type="application/atom+xml" href="' . DI::baseUrl() . '/feed/' . $parameters['nickname'] . '/comments" title="' . DI::l10n()->t('%s\'s comments', $a->profile['username']) . '"/>' . "\n";
-		DI::page()['htmlhead'] .= '<link rel="alternate" type="application/atom+xml" href="' . DI::baseUrl() . '/feed/' . $parameters['nickname'] . '/activity" title="' . DI::l10n()->t('%s\'s timeline', $a->profile['username']) . '"/>' . "\n";
+		DI::page()['htmlhead'] .= '<link rel="alternate" type="application/atom+xml" href="' . DI::baseUrl() . '/dfrn_poll/' . $parameters['nickname'] . '" title="DFRN: ' . DI::l10n()->t('%s\'s timeline', $a->profile['name']) . '"/>' . "\n";
+		DI::page()['htmlhead'] .= '<link rel="alternate" type="application/atom+xml" href="' . DI::baseUrl() . '/feed/' . $parameters['nickname'] . '/" title="' . DI::l10n()->t('%s\'s posts', $a->profile['name']) . '"/>' . "\n";
+		DI::page()['htmlhead'] .= '<link rel="alternate" type="application/atom+xml" href="' . DI::baseUrl() . '/feed/' . $parameters['nickname'] . '/comments" title="' . DI::l10n()->t('%s\'s comments', $a->profile['name']) . '"/>' . "\n";
+		DI::page()['htmlhead'] .= '<link rel="alternate" type="application/atom+xml" href="' . DI::baseUrl() . '/feed/' . $parameters['nickname'] . '/activity" title="' . DI::l10n()->t('%s\'s timeline', $a->profile['name']) . '"/>' . "\n";

 		$category = $datequery = $datequery2 = '';

@ -162,7 +162,7 @@ class Status extends BaseProfile
 		// If not then we can improve the performance with an additional condition
 		$condition = ['uid' => $a->profile['uid'], 'page-flags' => [User::PAGE_FLAGS_COMMUNITY, User::PAGE_FLAGS_PRVGROUP]];
 		if (!DBA::exists('user', $condition)) {
-			$sql_extra3 = sprintf(" AND `thread`.`contact-id` = %d ", intval(intval($a->profile['contact_id'])));
+			$sql_extra3 = sprintf(" AND `thread`.`contact-id` = %d ", intval(intval($a->profile['id'])));
 		} else {
 			$sql_extra3 = "";
 		}
--- a/src/Protocol/DFRN.php
+++ b/src/Protocol/DFRN.php
@ -183,19 +183,12 @@ class DFRN

 		$sql_extra = sprintf(" AND `item`.`private` != %s ", Item::PRIVATE);

-		$r = q(
-			"SELECT `contact`.*, `user`.`nickname`, `user`.`timezone`, `user`.`page-flags`, `user`.`account-type`
-			FROM `contact` INNER JOIN `user` ON `user`.`uid` = `contact`.`uid`
-			WHERE `contact`.`self` AND `user`.`nickname` = '%s' LIMIT 1",
-			DBA::escape($owner_nick)
-		);
-
-		if (! DBA::isResult($r)) {
+		$owner = DBA::selectFirst('owner-view', [], ['nickname' => $owner_nick]);
+		if (!DBA::isResult($owner)) {
 			Logger::log(sprintf('No contact found for nickname=%d', $owner_nick), Logger::WARNING);
 			exit();
 		}

-		$owner = $r[0];
 		$owner_id = $owner['uid'];

 		$sql_post_table = "";
@ -684,18 +677,10 @@ class DFRN
 		}

 		// Only show contact details when we are allowed to
-		$r = q(
-			"SELECT `profile`.`about`, `profile`.`name`, `profile`.`homepage`, `user`.`nickname`,
-				`user`.`timezone`, `profile`.`locality`, `profile`.`region`, `profile`.`country-name`,
-				`profile`.`pub_keywords`, `profile`.`xmpp`, `profile`.`dob`
-			FROM `profile`
-				INNER JOIN `user` ON `user`.`uid` = `profile`.`uid`
-				WHERE NOT `user`.`hidewall` AND `user`.`uid` = %d",
-			intval($owner['uid'])
-		);
-		if (DBA::isResult($r)) {
-			$profile = $r[0];
-
+		$profile = DBA::selectFirst('owner-view',
+			['about', 'name', 'homepage', 'nickname', 'timezone', 'locality', 'region', 'country-name', 'pub_keywords', 'xmpp', 'dob'],
+			['uid' => $owner['uid'], 'hidewall' => false]);
+		if (DBA::isResult($profile)) {
 			XML::addElement($doc, $author, "poco:displayName", $profile["name"]);
 			XML::addElement($doc, $author, "poco:updated", $namdate);

--- a/src/Protocol/Diaspora.php
+++ b/src/Protocol/Diaspora.php
@ -259,27 +259,13 @@ class Diaspora
 	 */
 	public static function participantsForThread($thread, array $contacts)
 	{
-		$r = DBA::p("SELECT `contact`.`batch`, `contact`.`id`, `contact`.`url`, `contact`.`name`, `contact`.`network`, `contact`.`protocol`,
-				`fcontact`.`batch` AS `fbatch`, `fcontact`.`network` AS `fnetwork` FROM `participation`
-				INNER JOIN `contact` ON `contact`.`id` = `participation`.`cid`
-				INNER JOIN `fcontact` ON `fcontact`.`id` = `participation`.`fid`
-				WHERE `participation`.`iid` = ? AND NOT `contact`.`archive`", $thread);
-
-		while ($contact = DBA::fetch($r)) {
-			if (!empty($contact['fnetwork'])) {
-				$contact['network'] = $contact['fnetwork'];
-			}
-			unset($contact['fnetwork']);
+		$participation = DBA::select('participation-view', [], ['iid' => $thread]);

+		while ($contact = DBA::fetch($participation)) {	
 			if (empty($contact['protocol'])) {
 				$contact['protocol'] = $contact['network'];
 			}

-			if (empty($contact['batch']) && !empty($contact['fbatch'])) {
-				$contact['batch'] = $contact['fbatch'];
-			}
-			unset($contact['fbatch']);
-
 			$exists = false;
 			foreach ($contacts as $entry) {
 				if ($entry['batch'] == $contact['batch']) {
@ -291,7 +277,8 @@ class Diaspora
 				$contacts[] = $contact;
 			}
 		}
-		DBA::close($r);
+
+		DBA::close($participation);

 		return $contacts;
 	}
@ -4170,20 +4157,11 @@ class Diaspora
 	 */
 	private static function createProfileData($uid)
 	{
-		$r = q(
-			"SELECT `profile`.`uid` AS `profile_uid`, `profile`.* , `user`.*, `user`.`prvkey` AS `uprvkey`, `contact`.`addr`
-			FROM `profile`
-			INNER JOIN `user` ON `profile`.`uid` = `user`.`uid`
-			INNER JOIN `contact` ON `profile`.`uid` = `contact`.`uid`
-			WHERE `user`.`uid` = %d AND `contact`.`self` LIMIT 1",
-			intval($uid)
-		);
-
-		if (!$r) {
+		$profile = DBA::selectFirst('owner-view', ['uid', 'addr', 'name', 'location', 'net-publish', 'dob', 'about', 'pub_keywords'], ['uid' => $uid]);
+		if (!DBA::isResult($profile)) {
 			return [];
 		}

-		$profile = $r[0];
 		$handle = $profile["addr"];

 		$split_name = self::splitName($profile['name']);
@ -4212,7 +4190,7 @@ class Diaspora

 			$about = BBCode::toMarkdown($profile['about']);

-			$location = Profile::formatLocation($profile);
+			$location = $profile['location'];
 			$tags = '';
 			if ($profile['pub_keywords']) {
 				$kw = str_replace(',', ' ', $profile['pub_keywords']);
--- a/src/Protocol/Salmon.php
+++ b/src/Protocol/Salmon.php
@ -111,13 +111,13 @@ class Salmon
 	{
 		// does contact have a salmon endpoint?

-		if (! strlen($url)) {
+		if (!strlen($url)) {
 			return;
 		}

-		if (! $owner['sprvkey']) {
+		if (!$owner['sprvkey']) {
 			Logger::log(sprintf("user '%s' (%d) does not have a salmon private key. Send failed.",
-			$owner['username'], $owner['uid']));
+			$owner['name'], $owner['uid']));
 			return;
 		}

--- a/src/Worker/Directory.php
+++ b/src/Worker/Directory.php
@ -61,16 +61,10 @@ class Directory
 	}

 	private static function updateAll() {
-		$r = q("SELECT `url` FROM `contact`
-			INNER JOIN `profile` ON `profile`.`uid` = `contact`.`uid`
-			INNER JOIN `user` ON `user`.`uid` = `contact`.`uid`
-				WHERE `contact`.`self` AND `profile`.`net-publish` AND
-					NOT `user`.`account_expired` AND `user`.`verified`");
-
-		if (DBA::isResult($r)) {
-			foreach ($r AS $user) {
-				Worker::add(PRIORITY_LOW, 'Directory', $user['url']);
-			}
+		$users = DBA::select('owner-view', ['url'], ['net-publish' => true, 'account_expired' => false, 'verified' => true]);
+		while ($user = DBA::fetch($users)) {
+			Worker::add(PRIORITY_LOW, 'Directory', $user['url']);
 		}
+		DBA::close($users);
 	}
 }
--- a/static/dbstructure.config.php
+++ b/static/dbstructure.config.php
@ -51,7 +51,7 @@
 use Friendica\Database\DBA;

 if (!defined('DB_UPDATE_VERSION')) {
-	define('DB_UPDATE_VERSION', 1339);
+	define('DB_UPDATE_VERSION', 1340);
 }

 return [
--- a/static/dbview.config.php
+++ b/static/dbview.config.php
@ -0,0 +1,234 @@
+<?php
+/**
+ * @copyright Copyright (C) 2020, Friendica
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ * Main view structure configuration file.
+ *
+ * Here are described all the view Friendica needs to work.
+ *
+ * Syntax (braces indicate optionale values):
+ * "<view name>" => [
+ *	"fields" => [
+ *		"<field name>" => ["table", "field"],
+ *		"<field name>" => "SQL expression",
+ *		...
+ *	],
+ *	"query" => "FROM `table` INNER JOIN `other-table` ..."
+ *	],
+ * ],
+ *
+ * If you need to make any change, make sure to increment the DB_UPDATE_VERSION constant value in dbstructure.config.php.
+ *
+ */
+
+return [
+	"tag-view" => [
+		"fields" => [
+			"uri-id" => ["post-tag", "uri-id"],
+			"uri" => ["item-uri", "uri"],
+			"guid" => ["item-uri", "guid"],
+			"type" => ["post-tag", "type"],
+			"tid" => ["post-tag", "tid"],
+			"cid" => ["post-tag", "cid"],
+			"name" => "CASE `cid` WHEN 0 THEN `tag`.`name` ELSE `contact`.`name` END",
+			"url" => "CASE `cid` WHEN 0 THEN `tag`.`url` ELSE `contact`.`url` END",
+		],
+		"query" => "FROM `post-tag`
+			INNER JOIN `item-uri` ON `item-uri`.id = `post-tag`.`uri-id`
+			LEFT JOIN `tag` ON `post-tag`.`tid` = `tag`.`id`
+			LEFT JOIN `contact` ON `post-tag`.`cid` = `contact`.`id`"
+	],
+	"owner-view" => [
+		"fields" => [
+			"id" => ["contact", "id"],
+			"uid" => ["contact", "uid"],
+			"created" => ["contact", "created"],
+			"updated" => ["contact", "updated"],
+			"self" => ["contact", "self"],
+			"remote_self" => ["contact", "remote_self"],
+			"rel" => ["contact", "rel"],
+			"duplex" => ["contact", "duplex"],
+			"network" => ["contact", "network"],
+			"protocol" => ["contact", "protocol"],
+			"name" => ["contact", "name"],
+			"nick" => ["contact", "nick"],
+			"location" => ["contact", "location"],
+			"about" => ["contact", "about"],
+			"keywords" => ["contact", "keywords"],
+			"gender" => ["contact", "gender"],
+			"xmpp" => ["contact", "xmpp"],
+			"attag" => ["contact", "attag"],
+			"avatar" => ["contact", "avatar"],
+			"photo" => ["contact", "photo"],
+			"thumb" => ["contact", "thumb"],
+			"micro" => ["contact", "micro"],
+			"site-pubkey" => ["contact", "site-pubkey"],
+			"issued-id" => ["contact", "issued-id"],
+			"dfrn-id" => ["contact", "dfrn-id"],
+			"url" => ["contact", "url"],
+			"nurl" => ["contact", "nurl"],
+			"addr" => ["contact", "addr"],
+			"alias" => ["contact", "alias"],
+			"pubkey" => ["contact", "pubkey"],
+			"prvkey" => ["contact", "prvkey"],
+			"batch" => ["contact", "batch"],
+			"request" => ["contact", "request"],
+			"notify" => ["contact", "notify"],
+			"poll" => ["contact", "poll"],
+			"confirm" => ["contact", "confirm"],
+			"poco" => ["contact", "poco"],
+			"aes_allow" => ["contact", "aes_allow"],
+			"ret-aes" => ["contact", "ret-aes"],
+			"usehub" => ["contact", "usehub"],
+			"subhub" => ["contact", "subhub"],
+			"hub-verify" => ["contact", "hub-verify"],
+			"last-update" => ["contact", "last-update"],
+			"success_update" => ["contact", "success_update"],
+			"failure_update" => ["contact", "failure_update"],
+			"name-date" => ["contact", "name-date"],
+			"uri-date" => ["contact", "uri-date"],
+			"avatar-date" => ["contact", "avatar-date"],
+			"picdate" => ["contact", "avatar-date"], /// @todo Replaces all uses of "picdate" with "avatar-date"
+			"term-date" => ["contact", "term-date"],
+			"last-item" => ["contact", "last-item"],
+			"priority" => ["contact", "priority"],
+			"blocked" => ["contact", "blocked"], /// @todo Check if "blocked" from contact or from the users table
+			"block_reason" => ["contact", "block_reason"],
+			"readonly" => ["contact", "readonly"],
+			"writable" => ["contact", "writable"],
+			"forum" => ["contact", "forum"],
+			"prv" => ["contact", "prv"],
+			"contact-type" => ["contact", "contact-type"],
+			"hidden" => ["contact", "hidden"],
+			"archive" => ["contact", "archive"],
+			"pending" => ["contact", "pending"],
+			"deleted" => ["contact", "deleted"],
+			"rating" => ["contact", "rating"],
+			"unsearchable" => ["contact", "unsearchable"],
+			"sensitive" => ["contact", "sensitive"],
+			"baseurl" => ["contact", "baseurl"],
+			"reason" => ["contact", "reason"],
+			"closeness" => ["contact", "closeness"],
+			"info" => ["contact", "info"],
+			"profile-id" => ["contact", "profile-id"],
+			"bdyear" => ["contact", "bdyear"],
+			"bd" => ["contact", "bd"],
+			"notify_new_posts" => ["notify_new_posts"],
+			"fetch_further_information" => ["fetch_further_information"],
+			"ffi_keyword_blacklist" => ["ffi_keyword_blacklist"],
+			"parent-uid" => ["user", "parent-uid"],
+			"guid" => ["user", "guid"],
+			"nickname" => ["user", "nickname"], /// @todo Replaces all uses of "nickname" with "nick"
+			"email" => ["user", "email"],
+			"openid" => ["user", "openid"],
+			"timezone" => ["user", "timezone"],
+			"language" => ["user", "language"],
+			"register_date" => ["user", "register_date"],
+			"login_date" => ["user", "login_date"],
+			"default-location" => ["user", "default-location"],
+			"allow_location" => ["user", "allow_location"],
+			"theme" => ["user", "theme"],
+			"upubkey" => ["user", "pubkey"],
+			"uprvkey" => ["user", "prvkey"],
+			"sprvkey" => ["user", "sprvkey"],
+			"spubkey" => ["user", "spubkey"],
+			"verified" => ["user", "verified"],
+			"blockwall" => ["user", "blockwall"],
+			"hidewall" => ["user", "hidewall"],
+			"blocktags" => ["user", "blocktags"],
+			"unkmail" => ["user", "unkmail"],
+			"cntunkmail" => ["user", "cntunkmail"],
+			"notify-flags" => ["user", "notify-flags"],
+			"page-flags" => ["user", "page-flags"],
+			"account-type" => ["user", "account-type"],
+			"prvnets" => ["user", "prvnets"],
+			"maxreq" => ["user", "maxreq"],
+			"expire" => ["user", "expire"],
+			"account_removed" => ["user", "account_removed"],
+			"account_expired" => ["user", "account_expired"],
+			"account_expires_on" => ["user", "account_expires_on"],
+			"expire_notification_sent" => ["user", "expire_notification_sent"],			
+			"def_gid" => ["user", "def_gid"],
+			"allow_cid" => ["user", "allow_cid"],
+			"allow_gid" => ["user", "allow_gid"],
+			"deny_cid" => ["user", "deny_cid"],
+			"deny_gid" => ["user", "deny_gid"],
+			"openidserver" => ["user", "openidserver"],
+			"publish" => ["profile", "publish"],
+			"net-publish" => ["profile", "net-publish"],
+			"hide-friends" => ["profile", "hide-friends"],
+			"prv_keywords" => ["profile", "prv_keywords"],
+			"pub_keywords" => ["profile", "pub_keywords"],
+			"address" => ["profile", "address"],
+			"locality" => ["profile", "locality"],
+			"region" => ["profile", "region"],
+			"postal-code" => ["profile", "postal-code"],
+			"country-name" => ["profile", "country-name"],
+			"homepage" => ["profile", "homepage"],
+			"xmpp" => ["profile", "xmpp"],
+			"dob" => ["profile", "dob"],
+		],
+		"query" => "FROM `user`
+			INNER JOIN `contact` ON `contact`.`uid` = `user`.`uid` AND `contact`.`self`
+			INNER JOIN `profile` ON `profile`.`uid` = `user`.`uid`"
+	],
+	"participation-view" => [
+		"fields" => [
+			"iid" => ["participation", "iid"],
+			"id" => ["contact", "id"],
+			"url" => ["contact", "url"],
+			"name" => ["contact", "name"],
+			"protocol" => ["contact", "protocol"],
+			"batch" => "CASE `contact`.`batch` WHEN '' THEN `fcontact`.`batch` ELSE `contact`.`batch` END",
+			"network" => "CASE `fcontact`.`network` WHEN '' THEN `contact`.`network` ELSE `fcontact`.`network` END",
+		],
+		"query" => "FROM `participation`
+			INNER JOIN `contact` ON `contact`.`id` = `participation`.`cid` AND NOT `contact`.`archive`
+			INNER JOIN `fcontact` ON `fcontact`.`id` = `participation`.`fid`"
+	],
+	"pending-view" => [
+		"fields" => [
+			"id" => ["register", "id"],
+			"hash" => ["register", "hash"],
+			"created" => ["register", "created"],
+			"uid" => ["register", "uid"],
+			"password" => ["register", "password"],
+			"language" => ["register", "language"],
+			"note" => ["register", "note"],
+			"self" => ["contact", "self"],
+			"name" => ["contact", "name"],
+			"url" => ["contact", "url"],
+			"micro" => ["contact", "micro"],
+			"email" => ["user", "email"],
+			"nick" => ["contact", "nick"],
+		],
+		"query" => "FROM `register`
+			INNER JOIN `contact` ON `register`.`uid` = `contact`.`uid`
+			INNER JOIN `user` ON `register`.`uid` = `user`.`uid`"
+	],
+	"workerqueue-view" => [
+		"fields" => [
+			"pid" => ["process", "pid"],
+			"priority" => ["workerqueue", "priority"],
+		],
+		"query" => "FROM `process`
+			INNER JOIN `workerqueue` ON `workerqueue`.`pid` = `process`.`pid`
+			WHERE NOT `workerqueue`.`done`"
+	],
+];
+
--- a/tests/datasets/api.fixture.php
+++ b/tests/datasets/api.fixture.php
@ -256,6 +256,12 @@ return [
 			'wall'       => 1,
 		],
 	],
+	'profile' => [
+		[
+			'id' => 1,
+			'uid' => 42,
+		],
+	],
 	'group'   => [
 		[
 			'id'      => 1,
--- a/view/theme/vier/theme.php
+++ b/view/theme/vier/theme.php
@ -140,29 +140,26 @@ function vier_community_info()

 	// last 9 users
 	if ($show_lastusers) {
-		$publish = (DI::config()->get('system', 'publish_all') ? '' : "`publish` = 1");
-		$order = " ORDER BY `register_date` DESC ";
+		$condition = ['blocked' => false];
+		if (!DI::config()->get('system', 'publish_all')) {
+			$condition['publish'] = true;
+		}

 		$tpl = Renderer::getMarkupTemplate('ch_directory_item.tpl');

-		$r = q("SELECT `profile`.*, `user`.`nickname`
-				FROM `profile` LEFT JOIN `user` ON `user`.`uid` = `profile`.`uid`
-				WHERE $publish AND `user`.`blocked` = 0 $order LIMIT %d , %d ",
-			0,
-			9
-		);
+		$profiles = DBA::selectToArray('owner-view', [], $condition, ['order' => ['register_date' => true], 'limit' => [0, 9]]);

-		if (DBA::isResult($r)) {
+		if (DBA::isResult($profiles)) {
 			$aside['$lastusers_title'] = DI::l10n()->t('Last users');
 			$aside['$lastusers_items'] = [];

-			foreach ($r as $rr) {
-				$profile_link = 'profile/' . ((strlen($rr['nickname'])) ? $rr['nickname'] : $rr['uid']);
+			foreach ($profiles as $profile) {
+				$profile_link = 'profile/' . ((strlen($profile['nickname'])) ? $profile['nickname'] : $profile['uid']);
 				$entry = Renderer::replaceMacros($tpl, [
-					'$id' => $rr['id'],
+					'$id' => $profile['id'],
 					'$profile_link' => $profile_link,
-					'$photo' => DI::baseUrl()->remove($rr['thumb']),
-					'$alt_text' => $rr['name']]);
+					'$photo' => DI::baseUrl()->remove($profile['thumb']),
+					'$alt_text' => $profile['name']]);
 				$aside['$lastusers_items'][] = $entry;
 			}
 		}