From 2d507bb65ae2118c41fc23f370fe8bc43fff0213 Mon Sep 17 00:00:00 2001
From: Janne Koschinski <janne@kuschku.de>
Date: Tue, 4 Feb 2020 12:01:05 +0100
Subject: [PATCH] Minor change to hopefully improve the performance
---
database/backends/PostgresSmartBackend.php | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/database/backends/PostgresSmartBackend.php b/database/backends/PostgresSmartBackend.php
index 9d14e74..0fb7db4 100644
--- a/database/backends/PostgresSmartBackend.php
+++ b/database/backends/PostgresSmartBackend.php
@@ -64,6 +64,9 @@ class PostgresSmartBackend implements Backend
$tsQueryFunction = $this->tsQueryFunction();
$rankingFunction = $this->rankingFunction();
return $this->db->prepare("
+ WITH matching_backlog AS (
+ SELECT * FROM backlog WHERE tsv @@ $tsQueryFunction
+ )
SELECT
ranked_messages.bufferid,
ranked_messages.buffername,
@@ -101,7 +104,7 @@ class PostgresSmartBackend implements Backend
query,
$rankingFunction AS rank_value
FROM
- backlog
+ matching_backlog AS backlog
JOIN buffer ON backlog.bufferid = buffer.bufferid
, $tsQueryFunction query
WHERE buffer.userid = :userid
@@ -150,6 +153,9 @@ class PostgresSmartBackend implements Backend
$tsQueryFunction = $this->tsQueryFunction();
$rankingFunction = $this->rankingFunction();
return $this->db->prepare("
+ WITH matching_backlog AS (
+ SELECT * FROM backlog WHERE tsv @@ $tsQueryFunction
+ )
SELECT
matching_messages.messageid,
matching_messages.time,
@@ -168,7 +174,7 @@ class PostgresSmartBackend implements Backend
query,
$rankingFunction AS rank_value
FROM
- backlog
+ matching_backlog AS backlog
JOIN buffer ON backlog.bufferid = buffer.bufferid
, $tsQueryFunction query
WHERE buffer.userid = :userid
--
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