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add a very obvious speed improvement to topmost_id calculation

This commit is contained in:
Andrew Dolgov 2015-08-04 20:38:43 +03:00
parent 73ef6f0459
commit 332ff5cfb8
1 changed files with 7 additions and 0 deletions
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7
include/functions2.php
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@ -716,6 +716,12 @@
if ($feed == -3)
$first_id_query_strategy_part = "true";
if (DB_TYPE == "pgsql") {
$sanity_interval_qpart = "date_entered >= NOW() - INTERVAL '1 hour' AND";
} else {
$sanity_interval_qpart = "date_entered >= DATE_SUB(NOW(), INTERVAL 1 hour) AND";
}
if (!$search) {
// if previous topmost article id changed that means our current pagination is no longer valid
$query = "SELECT DISTINCT
@ -739,6 +745,7 @@
$search_query_part
$start_ts_query_part
$since_id_part
$sanity_interval_qpart
$first_id_query_strategy_part ORDER BY $order_by LIMIT 1";
if ($_REQUEST["debug"]) {