|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
namespace Helix\DB\SQL; |
|
4
|
|
|
|
|
5
|
|
|
use Helix\DB; |
|
6
|
|
|
|
|
7
|
|
|
/** |
|
8
|
|
|
* Produces aggregate expressions for the instance. |
|
9
|
|
|
*/ |
|
10
|
|
|
trait AggregateTrait { |
|
11
|
|
|
|
|
12
|
|
|
/** |
|
13
|
|
|
* @var DB |
|
14
|
|
|
*/ |
|
15
|
|
|
protected $db; |
|
16
|
|
|
|
|
17
|
|
|
/** |
|
18
|
|
|
* `AVG(ALL|DISTINCT $this)` |
|
19
|
|
|
* |
|
20
|
|
|
* @param string $aggregate `ALL|DISTINCT` |
|
21
|
|
|
* @return Numeric |
|
22
|
|
|
*/ |
|
23
|
|
|
public function getAvg ($aggregate = 'ALL') { |
|
24
|
|
|
return new Numeric($this->db, "AVG({$aggregate} {$this})"); |
|
25
|
|
|
} |
|
26
|
|
|
|
|
27
|
|
|
/** |
|
28
|
|
|
* `GROUP_CONCAT($this)` using a delimiter. |
|
29
|
|
|
* |
|
30
|
|
|
* @param string $delimiter |
|
31
|
|
|
* @return Text |
|
32
|
|
|
*/ |
|
33
|
|
|
public function getConcat (string $delimiter = ',') { |
|
34
|
|
|
$delimiter = $this->db->quote($delimiter); |
|
35
|
|
|
switch ($this->db->getDriver()) { |
|
36
|
|
|
case 'sqlite': |
|
37
|
|
|
return new Text($this->db, "GROUP_CONCAT({$this},{$delimiter})"); |
|
38
|
|
|
default: |
|
39
|
|
|
return new Text($this->db, "GROUP_CONCAT({$this} SEPARATOR {$delimiter})"); |
|
40
|
|
|
} |
|
41
|
|
|
} |
|
42
|
|
|
|
|
43
|
|
|
/** |
|
44
|
|
|
* `COUNT(ALL|DISTINCT $this)` |
|
45
|
|
|
* |
|
46
|
|
|
* @param string $aggregate `ALL|DISTINCT` |
|
47
|
|
|
* @return Numeric |
|
48
|
|
|
*/ |
|
49
|
|
|
public function getCount ($aggregate = 'ALL') { |
|
50
|
|
|
return new Numeric($this->db, "COUNT({$aggregate} {$this})"); |
|
51
|
|
|
} |
|
52
|
|
|
|
|
53
|
|
|
/** |
|
54
|
|
|
* `MAX($this)` |
|
55
|
|
|
* |
|
56
|
|
|
* @return Numeric |
|
57
|
|
|
*/ |
|
58
|
|
|
public function getMax () { |
|
59
|
|
|
return new Numeric($this->db, "MAX({$this})"); |
|
60
|
|
|
} |
|
61
|
|
|
|
|
62
|
|
|
/** |
|
63
|
|
|
* `MIN($this)` |
|
64
|
|
|
* |
|
65
|
|
|
* @return Numeric |
|
66
|
|
|
*/ |
|
67
|
|
|
public function getMin () { |
|
68
|
|
|
return new Numeric($this->db, "MIN({$this})"); |
|
69
|
|
|
} |
|
70
|
|
|
|
|
71
|
|
|
/** |
|
72
|
|
|
* `SUM(ALL|DISTINCT $this)` |
|
73
|
|
|
* |
|
74
|
|
|
* @param string $aggregate `ALL|DISTINCT` |
|
75
|
|
|
* @return Numeric |
|
76
|
|
|
*/ |
|
77
|
|
|
public function getSum ($aggregate = 'ALL') { |
|
78
|
|
|
return new Numeric($this->db, "SUM({$aggregate} {$this})"); |
|
79
|
|
|
} |
|
80
|
|
|
} |
hfw /
db
