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Replaced full table scan for each QSO by a "exists" (tnx Andreas)

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int2001
2024-05-18 10:41:07 +00:00
parent a85fe6f6ed
commit 3ff6944ffe
1 changed files with 1 additions and 6 deletions
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7
application/models/Logbookadvanced_model.php
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@@ -226,17 +226,12 @@ class Logbookadvanced_model extends CI_Model {
}
$sql = "
SELECT *, dxcc_entities.name AS station_country
SELECT *, dxcc_entities.name AS station_country,exists(select 1 from qsl_images where qsoid = qsos.COL_PRIMARY_KEY) as qslcount
FROM " . $this->config->item('table_name') . " qsos
INNER JOIN station_profile ON qsos.station_id=station_profile.station_id
LEFT OUTER JOIN satellite ON qsos.COL_SAT_NAME = satellite.name
LEFT OUTER JOIN dxcc_entities ON qsos.col_dxcc=dxcc_entities.adif
LEFT OUTER JOIN lotw_users ON qsos.col_call=lotw_users.callsign
LEFT OUTER JOIN (
select count(*) as qslcount, qsoid
from qsl_images
group by qsoid
) x on qsos.COL_PRIMARY_KEY = x.qsoid
WHERE station_profile.user_id = ?
$where
$where2