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performance optimisation for many cf's, most important was to remove the unnecessary join with the extra-table, if there's no search

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This commit is contained in:
Ralf Becker 2008-03-06 22:41:36 +00:00
parent d36c179645
commit cc6f013f6f
1 changed files with 39 additions and 29 deletions
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68
infolog/inc/class.soinfolog.inc.php
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@ -760,7 +760,7 @@ class soinfolog // DB-Layer
$sql_query = 'AND ('.(is_numeric($query['search']) ? 'main.info_id='.(int)$query['search'].' OR ' : '').
implode(" LIKE $pattern OR ",$columns)." LIKE $pattern) ";
}
if ($query['search'] || $query['custom_fields'])
if ($query['search'])
{
$join = ($cfcolfilter>0 ? '':'LEFT')." JOIN $this->extra_table ON main.info_id=$this->extra_table.info_id ";
// mssql and others cant use DISTICT if text columns (info_des) are involved
@ -778,12 +778,15 @@ class soinfolog // DB-Layer
{
$sql_query = "FROM $this->info_table main $join WHERE ($filtermethod $pid $sql_query) $link_extra";
$this->db->query($sql="SELECT $distinct main.info_id ".$sql_query,__LINE__,__FILE__);
$query['total'] = $this->db->num_rows();
if (isset($query['start']) && $query['start'] > $query['total'])
if ($this->db->Type == 'mysql' && $this->db->ServerInfo['version'] >= 4.0)
{
$query['start'] = 0;
$mysql_calc_rows = 'SQL_CALC_FOUND_ROWS ';
unset($query['total']);
}
else
{
$this->db->query($sql="SELECT $distinct main.info_id ".$sql_query,__LINE__,__FILE__);
$query['total'] = $this->db->num_rows();
}
if ($this->db->capabilities['sub_queries'])
{
@ -795,36 +798,43 @@ class soinfolog // DB-Layer
$info_customfield = ", (SELECT DISTINCT info_extra_value FROM $this->extra_table sub2 where sub2.info_id=main.info_id AND info_extra_name=".$this->db->quote($sortbycf).") AS cfsortcrit ";
}
//echo "SELECT $distinct main.* $count_subs $info_customfield $sql_query $ordermethod"."<br>";
$this->db->query($sql="SELECT $distinct main.* $count_subs $info_customfield $sql_query $ordermethod",__LINE__,__FILE__,
(int) $query['start'],isset($query['start']) ? (int) $query['num_rows'] : -1);
//echo "<p>db::query('$sql',,,".(int)$query['start'].','.(isset($query['start']) ? (int) $query['num_rows'] : -1).")</p>\n";
while (($info =& $this->db->row(true)))
do
{
if (isset($query['start']) && isset($query['total']) && $query['start'] > $query['total'])
{
$query['start'] = 0;
}
$rs = $this->db->query($sql="SELECT $mysql_calc_rows $distinct main.* $count_subs $info_customfield $sql_query $ordermethod",__LINE__,__FILE__,
(int) $query['start'],isset($query['start']) ? (int) $query['num_rows'] : -1);
//echo "<p>db::query('$sql',,,".(int)$query['start'].','.(isset($query['start']) ? (int) $query['num_rows'] : -1).")</p>\n";
if ($mysql_calc_rows)
{
$query['total'] = $this->db->Link_ID->GetOne('SELECT FOUND_ROWS()');
}
}
// check if start is behind total --> loop to set start=0
while (isset($query['start']) && $query['start'] > $query['total']);
foreach($rs as $info)
{
$info['info_responsible'] = $info['info_responsible'] ? explode(',',$info['info_responsible']) : array();
$ids[$info['info_id']] = $info;
}
// prepare selected cols array
$sca=explode(',',$query['selectcols']);
if ($ids)
if ($ids && $query['custom_fields'] && strchr($query['selectcols'],'#') !== false)
{
$this->db->select($this->extra_table,'*',array('info_id'=>array_keys($ids)),__LINE__,__FILE__);
while ($row = $this->db->row(true))
$names = array();
foreach(explode(',',$query['selectcols']) as $col)
{
if ((isset($row['info_extra_value'])&&strlen($row['info_extra_value'])>0))
{
if ((in_array('#'.$row['info_extra_name'],$sca) || !isset($query['selectcols']) ||
(stripos($query['selectcols'],'#')===FALSE && stripos($query['selectcols'],'customfields')!==FALSE) ))
{
$ids[$row['info_id']]['#'.$row['info_extra_name']] = $row['info_extra_value'];
} else {
if (!$query['custom_fields']) {
$ids[$row['info_id']]['#'.$row['info_extra_name']] = $row['info_extra_value'];
}
}
} else {
unset($ids[$row['info_id']]['#'.$row['info_extra_name']]);
}
if ($col[0] == '#') $names[] = substr($col,1);
}
foreach($this->db->select($this->extra_table,'*',array(
'info_id' => array_keys($ids),
'info_extra_name' => $names,
),__LINE__,__FILE__) as $row)
{
$ids[$row['info_id']]['#'.$row['info_extra_name']] = $row['info_extra_value'];
}
}
}