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Simplify SQL in statistics

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Reduce the use of product-specific date functions. Improve performances.
Remove redundant functions.
This commit is contained in:
Alexandre Alapetite
2016-09-11 11:24:32 +02:00
parent 12d21c4fe8
commit ccb56bcbf3
3 changed files with 39 additions and 113 deletions
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55
app/Models/StatsDAOSQLite.php
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@@ -2,61 +2,6 @@
class FreshRSS_StatsDAOSQLite extends FreshRSS_StatsDAO {
/**
* Calculates entry count per day on a 30 days period.
* Returns the result as a JSON object.
*
* @return JSON object
*/
public function calculateEntryCount() {
$count = $this->initEntryCountArray();
$period = parent::ENTRY_COUNT_PERIOD;
// Get stats per day for the last 30 days
$sql = <<<SQL
SELECT round(julianday(e.date, 'unixepoch') - julianday('now')) AS day,
COUNT(1) AS count
FROM {$this->prefix}entry AS e
WHERE strftime('%Y%m%d', e.date, 'unixepoch')
BETWEEN strftime('%Y%m%d', 'now', '-{$period} days')
AND strftime('%Y%m%d', 'now', '-1 day')
GROUP BY day
ORDER BY day ASC
SQL;
$stm = $this->bd->prepare($sql);
$stm->execute();
$res = $stm->fetchAll(PDO::FETCH_ASSOC);
foreach ($res as $value) {
$count[(int) $value['day']] = (int) $value['count'];
}
return $this->convertToSerie($count);
}
/**
* Calculates entry average per day on a 30 days period.
*
* @return integer
*/
public function calculateEntryAverage() {
$period = self::ENTRY_COUNT_PERIOD;
// Get stats per day for the last 30 days
$sql = <<<SQL
SELECT COUNT(1) / {$period} AS average
FROM {$this->prefix}entry AS e
WHERE strftime('%Y%m%d', e.date, 'unixepoch')
BETWEEN strftime('%Y%m%d', 'now', '-{$period} days')
AND strftime('%Y%m%d', 'now', '-1 day')
SQL;
$stm = $this->bd->prepare($sql);
$stm->execute();
$res = $stm->fetch(PDO::FETCH_NAMED);
return round($res['average'], 2);
}
protected function calculateEntryRepartitionPerFeedPerPeriod($period, $feed = null) {
if ($feed) {
$restrict = "WHERE e.id_feed = {$feed}";