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Code Issues Packages Projects Releases Wiki Activity

Improve get_found_rows query performance (#1940)

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FrancescoUK
2018-04-12 22:42:56 +01:00
parent 8dc7855e56
commit 075d4e1aeb
9 changed files with 312 additions and 234 deletions
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118
application/models/Item.php
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@@ -97,58 +97,66 @@ class Item extends CI_Model
*/
public function get_found_rows($search, $filters)
{
return $this->search($search, $filters)->num_rows();
return $this->search($search, $filters, 0, 0, 'items.name', 'asc', TRUE);
}
/*
Perform a search on items
*/
public function search($search, $filters, $rows = 0, $limit_from = 0, $sort = 'items.name', $order = 'asc')
public function search($search, $filters, $rows = 0, $limit_from = 0, $sort = 'items.name', $order = 'asc', $count_only = FALSE)
{
$this->db->select('MAX(items.name) as name');
$this->db->select('MAX(items.category) as category');
$this->db->select('MAX(items.supplier_id) as supplier_id');
$this->db->select('MAX(items.item_number) as item_number');
$this->db->select('MAX(items.description) as description');
$this->db->select('MAX(items.cost_price) as cost_price');
$this->db->select('MAX(items.unit_price) as unit_price');
$this->db->select('MAX(items.reorder_level) as reorder_level');
$this->db->select('MAX(items.receiving_quantity) as receiving_quantity');
$this->db->select('items.item_id as item_id');
$this->db->select('MAX(items.pic_filename) as pic_filename');
$this->db->select('MAX(items.allow_alt_description) as allow_alt_description');
$this->db->select('MAX(items.is_serialized) as is_serialized');
$this->db->select('MAX(items.deleted) as deleted');
$this->db->select('MAX(items.custom1) as custom1');
$this->db->select('MAX(items.custom2) as custom2');
$this->db->select('MAX(items.custom3) as custom3');
$this->db->select('MAX(items.custom4) as custom4');
$this->db->select('MAX(items.custom5) as custom5');
$this->db->select('MAX(items.custom6) as custom6');
$this->db->select('MAX(items.custom7) as custom7');
$this->db->select('MAX(items.custom8) as custom8');
$this->db->select('MAX(items.custom9) as custom9');
$this->db->select('MAX(items.custom10) as custom10');
$this->db->select('MAX(suppliers.person_id) as person_id');
$this->db->select('MAX(suppliers.company_name) as company_name');
$this->db->select('MAX(suppliers.agency_name) as agency_name');
$this->db->select('MAX(suppliers.account_number) as account_number');
$this->db->select('MAX(suppliers.deleted) as deleted');
$this->db->select('MAX(inventory.trans_id) as trans_id');
$this->db->select('MAX(inventory.trans_items) as trans_items');
$this->db->select('MAX(inventory.trans_user) as trans_user');
$this->db->select('MAX(inventory.trans_date) as trans_date');
$this->db->select('MAX(inventory.trans_comment) as trans_comment');
$this->db->select('MAX(inventory.trans_location) as trans_location');
$this->db->select('MAX(inventory.trans_inventory) as trans_inventory');
if($filters['stock_location_id'] > -1)
// get_found_rows case
if($count_only == TRUE)
{
$this->db->select('MAX(item_quantities.item_id) as qty_item_id');
$this->db->select('MAX(item_quantities.location_id) as location_id');
$this->db->select('MAX(item_quantities.quantity) as quantity');
$this->db->select('COUNT(items.item_id) as count');
}
else
{
$this->db->select('items.item_id as item_id');
$this->db->select('MAX(items.name) as name');
$this->db->select('MAX(items.category) as category');
$this->db->select('MAX(items.supplier_id) as supplier_id');
$this->db->select('MAX(items.item_number) as item_number');
$this->db->select('MAX(items.description) as description');
$this->db->select('MAX(items.cost_price) as cost_price');
$this->db->select('MAX(items.unit_price) as unit_price');
$this->db->select('MAX(items.reorder_level) as reorder_level');
$this->db->select('MAX(items.receiving_quantity) as receiving_quantity');
$this->db->select('MAX(items.pic_filename) as pic_filename');
$this->db->select('MAX(items.allow_alt_description) as allow_alt_description');
$this->db->select('MAX(items.is_serialized) as is_serialized');
$this->db->select('MAX(items.deleted) as deleted');
$this->db->select('MAX(items.custom1) as custom1');
$this->db->select('MAX(items.custom2) as custom2');
$this->db->select('MAX(items.custom3) as custom3');
$this->db->select('MAX(items.custom4) as custom4');
$this->db->select('MAX(items.custom5) as custom5');
$this->db->select('MAX(items.custom6) as custom6');
$this->db->select('MAX(items.custom7) as custom7');
$this->db->select('MAX(items.custom8) as custom8');
$this->db->select('MAX(items.custom9) as custom9');
$this->db->select('MAX(items.custom10) as custom10');
$this->db->select('MAX(suppliers.person_id) as person_id');
$this->db->select('MAX(suppliers.company_name) as company_name');
$this->db->select('MAX(suppliers.agency_name) as agency_name');
$this->db->select('MAX(suppliers.account_number) as account_number');
$this->db->select('MAX(suppliers.deleted) as deleted');
$this->db->select('MAX(inventory.trans_id) as trans_id');
$this->db->select('MAX(inventory.trans_items) as trans_items');
$this->db->select('MAX(inventory.trans_user) as trans_user');
$this->db->select('MAX(inventory.trans_date) as trans_date');
$this->db->select('MAX(inventory.trans_comment) as trans_comment');
$this->db->select('MAX(inventory.trans_location) as trans_location');
$this->db->select('MAX(inventory.trans_inventory) as trans_inventory');
if($filters['stock_location_id'] > -1)
{
$this->db->select('MAX(item_quantities.item_id) as qty_item_id');
$this->db->select('MAX(item_quantities.location_id) as location_id');
$this->db->select('MAX(item_quantities.quantity) as quantity');
}
}
$this->db->from('items as items');
@@ -221,15 +229,23 @@ class Item extends CI_Model
// avoid duplicated entries with same name because of inventory reporting multiple changes on the same item in the same date range
$this->db->group_by('items.item_id');
// order by name of item
$this->db->order_by($sort, $order);
if($rows > 0)
// get_found_rows case
if($count_only == TRUE)
{
$this->db->limit($rows, $limit_from);
return $this->db->get()->row_array()['count'];
}
else
{
// order by name of item by default
$this->db->order_by($sort, $order);
return $this->db->get();
if($rows > 0)
{
$this->db->limit($rows, $limit_from);
}
return $this->db->get();
}
}
/*