From e935473c5c05a40194c110fbb024825a30ca5a4b Mon Sep 17 00:00:00 2001
From: Mario Vavti <mario@mariovavti.com>
Date: Fri, 1 Sep 2017 21:27:59 +0200
Subject: add combined index for item.uid and item.item_unseen. this speeds up
 notifications by a magnitude.

---
 install/schema_mysql.sql    |  5 +++--
 install/schema_postgres.sql |  1 +
 install/update.php          | 16 +++++++++++++++-
 3 files changed, 19 insertions(+), 3 deletions(-)

(limited to 'install')

diff --git a/install/schema_mysql.sql b/install/schema_mysql.sql
index 9e2e401b5..a9950ce21 100644
--- a/install/schema_mysql.sql
+++ b/install/schema_mysql.sql
@@ -650,8 +650,9 @@ CREATE TABLE IF NOT EXISTS `item` (
   KEY `created` (`created`),
   KEY `edited` (`edited`),
   KEY `received` (`received`),
-  KEY `uid_commented` (`uid`,`commented`),
-  KEY `uid_created` (`uid`,`created`),
+  KEY `uid_commented` (`uid`, `commented`),
+  KEY `uid_created` (`uid`, `created`),
+  KEY `uid_item_unseen` (`uid`, `item_unseen`);
   KEY `aid` (`aid`),
   KEY `owner_xchan` (`owner_xchan`),
   KEY `author_xchan` (`author_xchan`),
diff --git a/install/schema_postgres.sql b/install/schema_postgres.sql
index 0bc783692..381c262a7 100644
--- a/install/schema_postgres.sql
+++ b/install/schema_postgres.sql
@@ -621,6 +621,7 @@ create index "item_edited" on item ("edited");
 create index "item_received" on item ("received");
 create index "item_uid_commented" on item ("uid","commented");
 create index "item_uid_created" on item ("uid","created");
+create index "item_uid_unseen" on item ("uid","item_unseen");
 create index "item_changed" on item ("changed");
 create index "item_comments_closed" on item ("comments_closed");
 create index "item_aid" on item ("aid");
diff --git a/install/update.php b/install/update.php
index 8798a3d69..b99e4dd9d 100644
--- a/install/update.php
+++ b/install/update.php
@@ -1,6 +1,6 @@
 <?php
 
-define( 'UPDATE_VERSION' , 1193 );
+define( 'UPDATE_VERSION' , 1194 );
 
 /**
  *
@@ -2978,3 +2978,17 @@ function update_r1192() {
 		return UPDATE_SUCCESS;
 	return UPDATE_FAILED;
 }
+
+function update_r1193() {
+
+	if(ACTIVE_DBTYPE == DBTYPE_POSTGRES) {
+		$r1 = q("CREATE INDEX item_uid_unseen ON item (uid, item_unseen)");
+	}
+	else {
+		$r1 = q("ALTER TABLE item ADD INDEX uid_item_unseen (uid, item_unseen);");
+	}
+
+	if($r1)
+		return UPDATE_SUCCESS;
+	return UPDATE_FAILED;
+}
-- 
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