Создать сводную таблицу сравнения на основе дат сайта

поворот на динамическое число дат

прямо в mysql

план

• построить измерение даты [ dim_site_dates_v ] содержит все периоды дат, в которых имеются данные об итогах
• измерение размеров сайтов [ dim_sites_v ] содержащий все сайты с данными в итоговых материалах
• установить количество периодов [ @num_periods ] сообщать против
• объединить даты и имена сайтов за отчетный период и записать итоговые значения в таблицу [ sites_summary_tmp ]
• использовать динамический шаблон запроса и цикл по пространству отчетов для параметризации запроса
• подготовить + выполнить запрос

настроить

create table sitetotals
(
sitetotals_id integer primary key not null,
sitetotals_date date not null,
sitetotals_site varchar(22) not null,
sitetotals_total integer not null
);

insert into sitetotals
( sitetotals_id, sitetotals_date, sitetotals_site, sitetotals_total )
values
(1 , '2015-08-08' , 'siteA' , 50 ),
(2 , '2015-08-08' , 'siteB' , 40 ),
(3 , '2015-08-08' , 'siteC' , 30 ),
(4 , '2015-08-08' , 'siteD' , 20 ),
(5 , '2015-08-08' , 'siteE' , 10 ),
(6 , '2015-08-01' , 'siteB' , 3 ),
(7 , '2015-08-01' , 'siteC' , 2 ),
(8 , '2015-08-01' , 'siteD' , 1 ),
(9 , '2015-08-01' , 'siteF' , 1 ),
(10 , '2015-07-25' , 'siteA' , 22 ),
(11 , '2015-07-25' , 'siteC' , 20 ),
(12 , '2015-07-25' , 'siteD' , 10 ),
(13 , '2015-07-25' , 'siteF' , 5 ),
(14 , '2015-07-18' , 'siteA' , 2 ),
(15 , '2015-07-18' , 'siteC' , 5 ),
(16 , '2015-07-18' , 'siteD' , 3 ),
(17 , '2015-07-18' , 'siteE' , 5 )
;

create view dim_sites_v
as
select distinct sitetotals_site
from sitetotals
;

create view dim_site_dates_v
as
select distinct sitetotals_date
from sitetotals
;

create table sites_summary_tmp
(
date_nmbr integer not null,
site_name varchar(22) not null,
total integer not null,
primary key ( date_nmbr, site_name )
);

set @num_periods := 4;

-- if you want to reuse this table, truncate/delete previous summary data first..
insert into sites_summary_tmp
( date_nmbr, site_name, total )
select dates.row_num, sites.sitetotals_site, coalesce(sd.sitetotals_total, 0) as total
from dim_sites_v sites
cross join
(
select sitetotals_date,
@row_num := @row_num + 1 as row_num
from dim_site_dates_v
cross join ( select @row_num := 0 ) as params
order by sitetotals_date desc
) dates
left join sitetotals sd
on sites.sitetotals_site = sd.sitetotals_site
and dates.sitetotals_date = sd.sitetotals_date
where dates.row_num <= @num_periods
;

-- set variables
-- @num_periods should only need to be set once
-- however sqlfiddle uses separate connection for
-- building schema and running sql. so it must be set in this connection
set @num_periods := 4;
set @join_template := ' inner join sites_summary_tmp prev#curr#
on  prev#prev#.site_name = prev#curr#.site_name
and prev#prev#.date_nmbr = prev#curr#.date_nmbr - 1
';
set @field_template := '`#prev#nbr##`,';
set @field_alias_template := 'prev#nbr#.total as `#prev#nbr##`,';
-- pivot report can be generated by joining summary results to itself
-- for each date period. and dynamically aliasing the titles to the
-- reporting dates.
set @query := 'select site_name,
#select_fields#
from
(
select prev0.site_name,
#alias_fields#
from sites_summary_tmp prev0
#all_joins#
where prev0.date_nmbr = 1
) pivot
;'
;

запрос

-- replace parameters in dynamic @query
select count(*)
from
(
select
@query := replace(@query, '#alias_fields#',
concat(replace(@field_alias_template, '#nbr#', dates.row_num), ' #alias_fields#')),
@query := replace(@query, '#select_fields#',
concat(replace(@field_template, '#nbr#', dates.row_num), ' #select_fields#')),
@query := replace(@query, concat('#prev', dates.row_num, '#'), sitetotals_date),
@query := if(dates.row_num < @num_periods - 1, replace(@query, '#all_joins#',
concat(replace(replace(@join_template, '#prev#', dates.row_num), '#curr#', dates.row_num + 1),
' #all_joins#')),
@query)
from
(
select sitetotals_date,
@row_num := @row_num + 1 as row_num
from dim_site_dates_v
cross join ( select @row_num := -1 ) as params
order by sitetotals_date desc
) dates
where dates.row_num < @num_periods
) suppress_output
into @ignore
;

set @query := replace(replace(replace(@query, '#all_joins#', ''), ', #alias_fields#', ' '), ', #select_fields#', ' ');

PREPARE dynamic_statement FROM @query;
EXECUTE dynamic_statement;
deallocate prepare dynamic_statement;

выход

+-----------+------------+------------+------------+------------+
| site_name | 2015-08-08 | 2015-08-01 | 2015-07-25 | 2015-07-18 |
+-----------+------------+------------+------------+------------+
| siteA     |         50 |          0 |         22 |          2 |
| siteB     |         40 |          3 |          0 |          0 |
| siteC     |         30 |          2 |         20 |          5 |
| siteD     |         20 |          1 |         10 |          3 |
| siteE     |         10 |          0 |          0 |          5 |
| siteF     |          0 |          1 |          5 |          0 |
+-----------+------------+------------+------------+------------+

sqlfiddle

с php

план

• построить измерение даты [ dim_site_dates_v ] содержит все периоды дат, в которых имеются данные об итогах
• измерение размеров сайтов [ dim_sites_v ] содержащий все сайты с данными в итоговых материалах
• установить количество периодов [ @num_periods ] сообщать против
• объедините даты и имена сайтов в течение отчетного периода, упорядочите по дате, и сайт вернет набор результатов в php
• PHP, чтобы разворачивать на полях даты

PHP

<?php

/**
* Mysqli initial code
*
* User permissions of database
* Create, Alter and Index table, Create view, and Select, Insert, Update, Delete table data
*
* @package         PhpFiddle
* @link            http://phpfiddle.org
* @since           2012
*/

require "util/public_db_info.php";

$short_connect = new mysqli($host_name, $user_name, $pass_word, $database_name, $port);

$sql = "set @num_periods := 4";
$result = $short_connect->query($sql) or die(mysqli_error($short_connect));

$sql = "select dates.sitetotals_date, sites.sitetotals_site, coalesce(sd.sitetotals_total, 0) as total " .
"from dim_sites_v sites " .
"cross join  " .
"( " .
"select sitetotals_date, " .
"@row_num := @row_num + 1 as row_num " .
"from dim_site_dates_v " .
"cross join ( select @row_num := 0 ) as params " .
"order by sitetotals_date desc " .
") dates " .
"left join sitetotals sd " .
"on sites.sitetotals_site = sd.sitetotals_site " .
"and dates.sitetotals_date = sd.sitetotals_date " .
"where dates.row_num <= @num_periods order by 1 desc,2";
$result = $short_connect->query($sql) or die(mysqli_error($short_connect));

$table = array();
$dates = array();
$sites = array();

if (($result) && ($result->num_rows > 0))
{
$results = array();

//convert query result into an associative array
while ($row = $result->fetch_assoc())
{
if(!in_array($row["sitetotals_date"], $dates))$dates[] = $row["sitetotals_date"];
if(!in_array($row["sitetotals_site"], $sites))$sites[] = $row["sitetotals_site"];
$table[$row["sitetotals_site"]][$row["sitetotals_date"]] = $row["total"];
}

$result->free();
}

echo "<table>";
echo "<tr><td>site_name</td>";
foreach($dates as $date)
{
echo "<td>" . $date . "</td>";
}
echo "</tr>";

foreach ($sites as $site)
{
echo "<tr><td>" . $site . "</td>";
foreach($dates as $date)
{
echo "<td>" . $table[$site][$date] . "</td>";
}
echo "</tr>";
}
echo "</table>";

$short_connect->close();


?>

выход

<table>
<tbody>
<tr>
<td>site_name</td>
<td>2015-08-08</td>
<td>2015-08-01</td>
<td>2015-07-25</td>
<td>2015-07-18</td>
</tr>
<tr>
<td>siteA</td>
<td>50</td>
<td>0</td>
<td>22</td>
<td>2</td>
</tr>
<tr>
<td>siteB</td>
<td>40</td>
<td>3</td>
<td>0</td>
<td>0</td>
</tr>
<tr>
<td>siteC</td>
<td>30</td>
<td>2</td>
<td>20</td>
<td>5</td>
</tr>
<tr>
<td>siteD</td>
<td>20</td>
<td>1</td>
<td>10</td>
<td>3</td>
</tr>
<tr>
<td>siteE</td>
<td>10</td>
<td>0</td>
<td>0</td>
<td>5</td>
</tr>
<tr>
<td>siteF</td>
<td>0</td>
<td>1</td>
<td>5</td>
<td>0</td>
</tr>
</tbody>
</table>