mirror of
https://github.com/EGroupware/egroupware.git
synced 2024-11-25 17:33:49 +01:00
185 lines
6.2 KiB
PHP
185 lines
6.2 KiB
PHP
<?php
|
|
/**
|
|
* @version V4.65 22 July 2005 (c) 2000-2005 John Lim (jlim@natsoft.com.my). All rights reserved.
|
|
* Released under both BSD license and Lesser GPL library license.
|
|
* Whenever there is any discrepancy between the two licenses,
|
|
* the BSD license will take precedence.
|
|
*
|
|
* Set tabs to 4 for best viewing.
|
|
*
|
|
* Latest version is available at http://php.weblogs.com
|
|
*
|
|
* Requires PHP4.01pl2 or later because it uses include_once
|
|
*/
|
|
|
|
/*
|
|
* Concept from daniel.lucazeau@ajornet.com.
|
|
*
|
|
* @param db Adodb database connection
|
|
* @param tables List of tables to join
|
|
* @rowfields List of fields to display on each row
|
|
* @colfield Pivot field to slice and display in columns, if we want to calculate
|
|
* ranges, we pass in an array (see example2)
|
|
* @where Where clause. Optional.
|
|
* @aggfield This is the field to sum. Optional.
|
|
* Since 2.3.1, if you can use your own aggregate function
|
|
* instead of SUM, eg. $sumfield = 'AVG(fieldname)';
|
|
* @sumlabel Prefix to display in sum columns. Optional.
|
|
* @aggfn Aggregate function to use (could be AVG, SUM, COUNT)
|
|
* @showcount Show count of records
|
|
*
|
|
* @returns Sql generated
|
|
*/
|
|
|
|
function PivotTableSQL($db,$tables,$rowfields,$colfield, $where=false,
|
|
$aggfield = false,$sumlabel='Sum ',$aggfn ='SUM', $showcount = true)
|
|
{
|
|
if ($aggfield) $hidecnt = true;
|
|
else $hidecnt = false;
|
|
|
|
$iif = strpos($db->databaseType,'access') !== false;
|
|
// note - vfp still doesn' work even with IIF enabled || $db->databaseType == 'vfp';
|
|
|
|
//$hidecnt = false;
|
|
|
|
if ($where) $where = "\nWHERE $where";
|
|
if (!is_array($colfield)) $colarr = $db->GetCol("select distinct $colfield from $tables $where order by 1");
|
|
if (!$aggfield) $hidecnt = false;
|
|
|
|
$sel = "$rowfields, ";
|
|
if (is_array($colfield)) {
|
|
foreach ($colfield as $k => $v) {
|
|
$k = trim($k);
|
|
if (!$hidecnt) {
|
|
$sel .= $iif ?
|
|
"\n\t$aggfn(IIF($v,1,0)) AS \"$k\", "
|
|
:
|
|
"\n\t$aggfn(CASE WHEN $v THEN 1 ELSE 0 END) AS \"$k\", ";
|
|
}
|
|
if ($aggfield) {
|
|
$sel .= $iif ?
|
|
"\n\t$aggfn(IIF($v,$aggfield,0)) AS \"$sumlabel$k\", "
|
|
:
|
|
"\n\t$aggfn(CASE WHEN $v THEN $aggfield ELSE 0 END) AS \"$sumlabel$k\", ";
|
|
}
|
|
}
|
|
} else {
|
|
foreach ($colarr as $v) {
|
|
if (!is_numeric($v)) $vq = $db->qstr($v);
|
|
else $vq = $v;
|
|
$v = trim($v);
|
|
if (strlen($v) == 0 ) $v = 'null';
|
|
if (!$hidecnt) {
|
|
$sel .= $iif ?
|
|
"\n\t$aggfn(IIF($colfield=$vq,1,0)) AS \"$v\", "
|
|
:
|
|
"\n\t$aggfn(CASE WHEN $colfield=$vq THEN 1 ELSE 0 END) AS \"$v\", ";
|
|
}
|
|
if ($aggfield) {
|
|
if ($hidecnt) $label = $v;
|
|
else $label = "{$v}_$aggfield";
|
|
$sel .= $iif ?
|
|
"\n\t$aggfn(IIF($colfield=$vq,$aggfield,0)) AS \"$label\", "
|
|
:
|
|
"\n\t$aggfn(CASE WHEN $colfield=$vq THEN $aggfield ELSE 0 END) AS \"$label\", ";
|
|
}
|
|
}
|
|
}
|
|
if ($aggfield && $aggfield != '1'){
|
|
$agg = "$aggfn($aggfield)";
|
|
$sel .= "\n\t$agg as \"$sumlabel$aggfield\", ";
|
|
}
|
|
|
|
if ($showcount)
|
|
$sel .= "\n\tSUM(1) as Total";
|
|
else
|
|
$sel = substr($sel,0,strlen($sel)-2);
|
|
|
|
$sql = "SELECT $sel \nFROM $tables $where \nGROUP BY $rowfields";
|
|
return $sql;
|
|
}
|
|
|
|
/* EXAMPLES USING MS NORTHWIND DATABASE */
|
|
if (0) {
|
|
|
|
# example1
|
|
#
|
|
# Query the main "product" table
|
|
# Set the rows to CompanyName and QuantityPerUnit
|
|
# and the columns to the Categories
|
|
# and define the joins to link to lookup tables
|
|
# "categories" and "suppliers"
|
|
#
|
|
|
|
$sql = PivotTableSQL(
|
|
$gDB, # adodb connection
|
|
'products p ,categories c ,suppliers s', # tables
|
|
'CompanyName,QuantityPerUnit', # row fields
|
|
'CategoryName', # column fields
|
|
'p.CategoryID = c.CategoryID and s.SupplierID= p.SupplierID' # joins/where
|
|
);
|
|
print "<pre>$sql";
|
|
$rs = $gDB->Execute($sql);
|
|
rs2html($rs);
|
|
|
|
/*
|
|
Generated SQL:
|
|
|
|
SELECT CompanyName,QuantityPerUnit,
|
|
SUM(CASE WHEN CategoryName='Beverages' THEN 1 ELSE 0 END) AS "Beverages",
|
|
SUM(CASE WHEN CategoryName='Condiments' THEN 1 ELSE 0 END) AS "Condiments",
|
|
SUM(CASE WHEN CategoryName='Confections' THEN 1 ELSE 0 END) AS "Confections",
|
|
SUM(CASE WHEN CategoryName='Dairy Products' THEN 1 ELSE 0 END) AS "Dairy Products",
|
|
SUM(CASE WHEN CategoryName='Grains/Cereals' THEN 1 ELSE 0 END) AS "Grains/Cereals",
|
|
SUM(CASE WHEN CategoryName='Meat/Poultry' THEN 1 ELSE 0 END) AS "Meat/Poultry",
|
|
SUM(CASE WHEN CategoryName='Produce' THEN 1 ELSE 0 END) AS "Produce",
|
|
SUM(CASE WHEN CategoryName='Seafood' THEN 1 ELSE 0 END) AS "Seafood",
|
|
SUM(1) as Total
|
|
FROM products p ,categories c ,suppliers s WHERE p.CategoryID = c.CategoryID and s.SupplierID= p.SupplierID
|
|
GROUP BY CompanyName,QuantityPerUnit
|
|
*/
|
|
//=====================================================================
|
|
|
|
# example2
|
|
#
|
|
# Query the main "product" table
|
|
# Set the rows to CompanyName and QuantityPerUnit
|
|
# and the columns to the UnitsInStock for diiferent ranges
|
|
# and define the joins to link to lookup tables
|
|
# "categories" and "suppliers"
|
|
#
|
|
$sql = PivotTableSQL(
|
|
$gDB, # adodb connection
|
|
'products p ,categories c ,suppliers s', # tables
|
|
'CompanyName,QuantityPerUnit', # row fields
|
|
# column ranges
|
|
array(
|
|
' 0 ' => 'UnitsInStock <= 0',
|
|
"1 to 5" => '0 < UnitsInStock and UnitsInStock <= 5',
|
|
"6 to 10" => '5 < UnitsInStock and UnitsInStock <= 10',
|
|
"11 to 15" => '10 < UnitsInStock and UnitsInStock <= 15',
|
|
"16+" =>'15 < UnitsInStock'
|
|
),
|
|
' p.CategoryID = c.CategoryID and s.SupplierID= p.SupplierID', # joins/where
|
|
'UnitsInStock', # sum this field
|
|
'Sum' # sum label prefix
|
|
);
|
|
print "<pre>$sql";
|
|
$rs = $gDB->Execute($sql);
|
|
rs2html($rs);
|
|
/*
|
|
Generated SQL:
|
|
|
|
SELECT CompanyName,QuantityPerUnit,
|
|
SUM(CASE WHEN UnitsInStock <= 0 THEN UnitsInStock ELSE 0 END) AS "Sum 0 ",
|
|
SUM(CASE WHEN 0 < UnitsInStock and UnitsInStock <= 5 THEN UnitsInStock ELSE 0 END) AS "Sum 1 to 5",
|
|
SUM(CASE WHEN 5 < UnitsInStock and UnitsInStock <= 10 THEN UnitsInStock ELSE 0 END) AS "Sum 6 to 10",
|
|
SUM(CASE WHEN 10 < UnitsInStock and UnitsInStock <= 15 THEN UnitsInStock ELSE 0 END) AS "Sum 11 to 15",
|
|
SUM(CASE WHEN 15 < UnitsInStock THEN UnitsInStock ELSE 0 END) AS "Sum 16+",
|
|
SUM(UnitsInStock) AS "Sum UnitsInStock",
|
|
SUM(1) as Total
|
|
FROM products p ,categories c ,suppliers s WHERE p.CategoryID = c.CategoryID and s.SupplierID= p.SupplierID
|
|
GROUP BY CompanyName,QuantityPerUnit
|
|
*/
|
|
}
|
|
?>
|