| 36 |
kaklik |
1 |
<?php
|
|
|
2 |
/**
|
|
|
3 |
* @version V4.80 8 Mar 2006 (c) 2000-2006 John Lim (jlim@natsoft.com.my). All rights reserved.
|
|
|
4 |
* Released under both BSD license and Lesser GPL library license.
|
|
|
5 |
* Whenever there is any discrepancy between the two licenses,
|
|
|
6 |
* the BSD license will take precedence.
|
|
|
7 |
*
|
|
|
8 |
* Set tabs to 4 for best viewing.
|
|
|
9 |
*
|
|
|
10 |
* Latest version is available at http://php.weblogs.com
|
|
|
11 |
*
|
|
|
12 |
* Requires PHP4.01pl2 or later because it uses include_once
|
|
|
13 |
*/
|
|
|
14 |
|
|
|
15 |
/*
|
|
|
16 |
* Concept from daniel.lucazeau@ajornet.com.
|
|
|
17 |
*
|
|
|
18 |
* @param db Adodb database connection
|
|
|
19 |
* @param tables List of tables to join
|
|
|
20 |
* @rowfields List of fields to display on each row
|
|
|
21 |
* @colfield Pivot field to slice and display in columns, if we want to calculate
|
|
|
22 |
* ranges, we pass in an array (see example2)
|
|
|
23 |
* @where Where clause. Optional.
|
|
|
24 |
* @aggfield This is the field to sum. Optional.
|
|
|
25 |
* Since 2.3.1, if you can use your own aggregate function
|
|
|
26 |
* instead of SUM, eg. $aggfield = 'fieldname'; $aggfn = 'AVG';
|
|
|
27 |
* @sumlabel Prefix to display in sum columns. Optional.
|
|
|
28 |
* @aggfn Aggregate function to use (could be AVG, SUM, COUNT)
|
|
|
29 |
* @showcount Show count of records
|
|
|
30 |
*
|
|
|
31 |
* @returns Sql generated
|
|
|
32 |
*/
|
|
|
33 |
|
|
|
34 |
function PivotTableSQL(&$db,$tables,$rowfields,$colfield, $where=false,
|
|
|
35 |
$aggfield = false,$sumlabel='Sum ',$aggfn ='SUM', $showcount = true)
|
|
|
36 |
{
|
|
|
37 |
if ($aggfield) $hidecnt = true;
|
|
|
38 |
else $hidecnt = false;
|
|
|
39 |
|
|
|
40 |
$iif = strpos($db->databaseType,'access') !== false;
|
|
|
41 |
// note - vfp still doesn' work even with IIF enabled || $db->databaseType == 'vfp';
|
|
|
42 |
|
|
|
43 |
//$hidecnt = false;
|
|
|
44 |
|
|
|
45 |
if ($where) $where = "\nWHERE $where";
|
|
|
46 |
if (!is_array($colfield)) $colarr = $db->GetCol("select distinct $colfield from $tables $where order by 1");
|
|
|
47 |
if (!$aggfield) $hidecnt = false;
|
|
|
48 |
|
|
|
49 |
$sel = "$rowfields, ";
|
|
|
50 |
if (is_array($colfield)) {
|
|
|
51 |
foreach ($colfield as $k => $v) {
|
|
|
52 |
$k = trim($k);
|
|
|
53 |
if (!$hidecnt) {
|
|
|
54 |
$sel .= $iif ?
|
|
|
55 |
"\n\t$aggfn(IIF($v,1,0)) AS \"$k\", "
|
|
|
56 |
:
|
|
|
57 |
"\n\t$aggfn(CASE WHEN $v THEN 1 ELSE 0 END) AS \"$k\", ";
|
|
|
58 |
}
|
|
|
59 |
if ($aggfield) {
|
|
|
60 |
$sel .= $iif ?
|
|
|
61 |
"\n\t$aggfn(IIF($v,$aggfield,0)) AS \"$sumlabel$k\", "
|
|
|
62 |
:
|
|
|
63 |
"\n\t$aggfn(CASE WHEN $v THEN $aggfield ELSE 0 END) AS \"$sumlabel$k\", ";
|
|
|
64 |
}
|
|
|
65 |
}
|
|
|
66 |
} else {
|
|
|
67 |
foreach ($colarr as $v) {
|
|
|
68 |
if (!is_numeric($v)) $vq = $db->qstr($v);
|
|
|
69 |
else $vq = $v;
|
|
|
70 |
$v = trim($v);
|
|
|
71 |
if (strlen($v) == 0 ) $v = 'null';
|
|
|
72 |
if (!$hidecnt) {
|
|
|
73 |
$sel .= $iif ?
|
|
|
74 |
"\n\t$aggfn(IIF($colfield=$vq,1,0)) AS \"$v\", "
|
|
|
75 |
:
|
|
|
76 |
"\n\t$aggfn(CASE WHEN $colfield=$vq THEN 1 ELSE 0 END) AS \"$v\", ";
|
|
|
77 |
}
|
|
|
78 |
if ($aggfield) {
|
|
|
79 |
if ($hidecnt) $label = $v;
|
|
|
80 |
else $label = "{$v}_$aggfield";
|
|
|
81 |
$sel .= $iif ?
|
|
|
82 |
"\n\t$aggfn(IIF($colfield=$vq,$aggfield,0)) AS \"$label\", "
|
|
|
83 |
:
|
|
|
84 |
"\n\t$aggfn(CASE WHEN $colfield=$vq THEN $aggfield ELSE 0 END) AS \"$label\", ";
|
|
|
85 |
}
|
|
|
86 |
}
|
|
|
87 |
}
|
|
|
88 |
if ($aggfield && $aggfield != '1'){
|
|
|
89 |
$agg = "$aggfn($aggfield)";
|
|
|
90 |
$sel .= "\n\t$agg as \"$sumlabel$aggfield\", ";
|
|
|
91 |
}
|
|
|
92 |
|
|
|
93 |
if ($showcount)
|
|
|
94 |
$sel .= "\n\tSUM(1) as Total";
|
|
|
95 |
else
|
|
|
96 |
$sel = substr($sel,0,strlen($sel)-2);
|
|
|
97 |
|
|
|
98 |
$sql = "SELECT $sel \nFROM $tables $where \nGROUP BY $rowfields";
|
|
|
99 |
return $sql;
|
|
|
100 |
}
|
|
|
101 |
|
|
|
102 |
/* EXAMPLES USING MS NORTHWIND DATABASE */
|
|
|
103 |
if (0) {
|
|
|
104 |
|
|
|
105 |
# example1
|
|
|
106 |
#
|
|
|
107 |
# Query the main "product" table
|
|
|
108 |
# Set the rows to CompanyName and QuantityPerUnit
|
|
|
109 |
# and the columns to the Categories
|
|
|
110 |
# and define the joins to link to lookup tables
|
|
|
111 |
# "categories" and "suppliers"
|
|
|
112 |
#
|
|
|
113 |
|
|
|
114 |
$sql = PivotTableSQL(
|
|
|
115 |
$gDB, # adodb connection
|
|
|
116 |
'products p ,categories c ,suppliers s', # tables
|
|
|
117 |
'CompanyName,QuantityPerUnit', # row fields
|
|
|
118 |
'CategoryName', # column fields
|
|
|
119 |
'p.CategoryID = c.CategoryID and s.SupplierID= p.SupplierID' # joins/where
|
|
|
120 |
);
|
|
|
121 |
print "<pre>$sql";
|
|
|
122 |
$rs = $gDB->Execute($sql);
|
|
|
123 |
rs2html($rs);
|
|
|
124 |
|
|
|
125 |
/*
|
|
|
126 |
Generated SQL:
|
|
|
127 |
|
|
|
128 |
SELECT CompanyName,QuantityPerUnit,
|
|
|
129 |
SUM(CASE WHEN CategoryName='Beverages' THEN 1 ELSE 0 END) AS "Beverages",
|
|
|
130 |
SUM(CASE WHEN CategoryName='Condiments' THEN 1 ELSE 0 END) AS "Condiments",
|
|
|
131 |
SUM(CASE WHEN CategoryName='Confections' THEN 1 ELSE 0 END) AS "Confections",
|
|
|
132 |
SUM(CASE WHEN CategoryName='Dairy Products' THEN 1 ELSE 0 END) AS "Dairy Products",
|
|
|
133 |
SUM(CASE WHEN CategoryName='Grains/Cereals' THEN 1 ELSE 0 END) AS "Grains/Cereals",
|
|
|
134 |
SUM(CASE WHEN CategoryName='Meat/Poultry' THEN 1 ELSE 0 END) AS "Meat/Poultry",
|
|
|
135 |
SUM(CASE WHEN CategoryName='Produce' THEN 1 ELSE 0 END) AS "Produce",
|
|
|
136 |
SUM(CASE WHEN CategoryName='Seafood' THEN 1 ELSE 0 END) AS "Seafood",
|
|
|
137 |
SUM(1) as Total
|
|
|
138 |
FROM products p ,categories c ,suppliers s WHERE p.CategoryID = c.CategoryID and s.SupplierID= p.SupplierID
|
|
|
139 |
GROUP BY CompanyName,QuantityPerUnit
|
|
|
140 |
*/
|
|
|
141 |
//=====================================================================
|
|
|
142 |
|
|
|
143 |
# example2
|
|
|
144 |
#
|
|
|
145 |
# Query the main "product" table
|
|
|
146 |
# Set the rows to CompanyName and QuantityPerUnit
|
|
|
147 |
# and the columns to the UnitsInStock for diiferent ranges
|
|
|
148 |
# and define the joins to link to lookup tables
|
|
|
149 |
# "categories" and "suppliers"
|
|
|
150 |
#
|
|
|
151 |
$sql = PivotTableSQL(
|
|
|
152 |
$gDB, # adodb connection
|
|
|
153 |
'products p ,categories c ,suppliers s', # tables
|
|
|
154 |
'CompanyName,QuantityPerUnit', # row fields
|
|
|
155 |
# column ranges
|
|
|
156 |
array(
|
|
|
157 |
' 0 ' => 'UnitsInStock <= 0',
|
|
|
158 |
"1 to 5" => '0 < UnitsInStock and UnitsInStock <= 5',
|
|
|
159 |
"6 to 10" => '5 < UnitsInStock and UnitsInStock <= 10',
|
|
|
160 |
"11 to 15" => '10 < UnitsInStock and UnitsInStock <= 15',
|
|
|
161 |
"16+" =>'15 < UnitsInStock'
|
|
|
162 |
),
|
|
|
163 |
' p.CategoryID = c.CategoryID and s.SupplierID= p.SupplierID', # joins/where
|
|
|
164 |
'UnitsInStock', # sum this field
|
|
|
165 |
'Sum' # sum label prefix
|
|
|
166 |
);
|
|
|
167 |
print "<pre>$sql";
|
|
|
168 |
$rs = $gDB->Execute($sql);
|
|
|
169 |
rs2html($rs);
|
|
|
170 |
/*
|
|
|
171 |
Generated SQL:
|
|
|
172 |
|
|
|
173 |
SELECT CompanyName,QuantityPerUnit,
|
|
|
174 |
SUM(CASE WHEN UnitsInStock <= 0 THEN UnitsInStock ELSE 0 END) AS "Sum 0 ",
|
|
|
175 |
SUM(CASE WHEN 0 < UnitsInStock and UnitsInStock <= 5 THEN UnitsInStock ELSE 0 END) AS "Sum 1 to 5",
|
|
|
176 |
SUM(CASE WHEN 5 < UnitsInStock and UnitsInStock <= 10 THEN UnitsInStock ELSE 0 END) AS "Sum 6 to 10",
|
|
|
177 |
SUM(CASE WHEN 10 < UnitsInStock and UnitsInStock <= 15 THEN UnitsInStock ELSE 0 END) AS "Sum 11 to 15",
|
|
|
178 |
SUM(CASE WHEN 15 < UnitsInStock THEN UnitsInStock ELSE 0 END) AS "Sum 16+",
|
|
|
179 |
SUM(UnitsInStock) AS "Sum UnitsInStock",
|
|
|
180 |
SUM(1) as Total
|
|
|
181 |
FROM products p ,categories c ,suppliers s WHERE p.CategoryID = c.CategoryID and s.SupplierID= p.SupplierID
|
|
|
182 |
GROUP BY CompanyName,QuantityPerUnit
|
|
|
183 |
*/
|
|
|
184 |
}
|
|
|
185 |
?>
|