"Počet kusů skladem"
=> 'SELECT room_id,room_name,model_id,model_name,model_barcode,COUNT(item_id),SUM(item_quantity)'.
' FROM item LEFT JOIN model USING(model_id) LEFT JOIN room USING(room_id)'.
"Počet kusů skladem"
=> 'SELECT room_id,room_name,model_id,model_name,model_barcode,COUNT(item_id),SUM(item_quantity)'.
' FROM item LEFT JOIN model USING(model_id) LEFT JOIN room USING(room_id)'.