我有查询:
SELECT MONTH(tgl) AS month, SUM(jumlahA) AS A, SUM(jumlahB) AS B
FROM tabel where YEAR(tgl)='2002' GROUP BY MONTH(tgl) order by 1;
结果是:
month A B
----------------------
1 85 0
2 38 0
9 34 23
问题是如何在PHP中完全显示一年(12个月)的数据,其中月份没有数据将0放到A和B.实际上我想创建带月轴的条形图(jan,feb,.. 。,des)
更新
这里有一些我的PHP代码:
echo "<categories>\n";
echo "<category name='Jan' />\n";
echo "<category name='Feb' />\n";
echo "<category name='Mar' />\n";
echo "<category name='Apr' />\n";
echo "<category name='Mei' />\n";
echo "<category name='Jun' />\n";
echo "<category name='Jul' />\n";
echo "<category name='Agu' />\n";
echo "<category name='Sept' />\n";
echo "<category name='Okt' />\n";
echo "<category name='Nop' />\n";
echo "<category name='Des' />\n";
echo "</categories>\n";
echo "<dataset seriesname='Hulu' color='AFD8F8'>";
$strQuery="SELECT MONTH(tgl) AS month, SUM(jumlahA) AS A, SUM(jumlahB) AS B FROM tabel where YEAR(tgl)='2002' GROUP BY MONTH(tgl) order by 1";
$hasil=mysql_query($strQuery);
while ($data = mysql_fetch_array($hasil)) {
echo "<set value='".$data[1]."' />";
}
echo "</dataset>";
答案 0 :(得分:1)
使用与array
返回的相同值制作MONTH(tgl) AS month
。假设这些值与类别相同(如果不是,您可以更改它),请执行以下操作:
$months = array('Jan'=>null, 'Feb'=>null, 'Mar'=>null, 'Apr'=>null, 'Mei'=>null,
'Jun'=>null, 'Jul'=>null, 'Agu'=>null, 'Sept'=>null, 'Okt'=>null, 'Nop'=>null, 'Des'=>null);
尼斯。现在将您的while
更改为:
while ($data = mysql_fetch_array($hasil)) {
$months[$data[0]] = "<set value='".$data[1]."' />";
}
现在,在数组中,你得到的每个月都分别带有值。没有价值的月份是NULL
s。现在很简单:
foreach ($months as $month) {
if ($month) {
echo $month;
}
else {
echo "<set value='0' />";
}
}
这是我的想法,我没有测试它,我希望它有效和有帮助!