如何查询从三个不同的表格php中选择总计和
如何查询从三个不同的表格php中选择总计和
提问于 2013-11-03 14:18:57
希望你们是好人！我有一个很大的问题，选择三个不同的表和那里的总和，所以我可以得到这三个表的总体。表如下，我只提到一些字段：
1:付款
id idnumber school_fee trans_fee
1 va03 10000 200002:payment_one
id idnumber school_fee trans_fee
1 va01 10000 300003:payment_two
id idnumber school_fee trans_fee
1 va02 40000 50000我已经从每一张表中得到了“总数”，我想要的是总结我得到的总数，从这三张表中得到总计。
这里我的php代码；
1:付款：
<?php
//include mysql connect
if (isset($_GET['query']))
{
$query=$_GET['query'];
// Instructions if $_POST['value'] exist
}
// gets value sent over search form
$min_length = 3;
// you can set minimum length of the query if you want
if(strlen($query) >= $min_length){ // if query length is more or equal minimum
length then
$query = htmlspecialchars($query);
// changes characters used in html to their equivalents, for example: < to >
$query = mysql_real_escape_string($query);
// makes sure nobody uses SQL injection
$raw_results = mysql_query("SELECT
*,SUM(school_fee+trans_fee)
As Total FROM payment
WHERE (`class` LIKE '%".$query."%')") or die(mysql_error());
$raw_results2 = mysql_query("SELECT * FROM payment
WHERE (`class` LIKE '%".$query."%')") or die(mysql_error());
// * means that it selects all fields, you can also write: `id`, `title`, `text`
// articles is the name of our table
// '%$query%' is what we're looking for, % means anything, for example if $query
is Hello
// it will match "hello", "Hello man", "gogohello", if you want exact match use
`title`='$query'
// or if you want to match just full word so "gogohello" is out use '% $query %'
...OR ... '$query %' ... OR ... '% $query'
if(mysql_num_rows($raw_results) > 0){
if(mysql_num_rows($raw_results2) > 0){
// if one or more rows are returned do following
while($results = mysql_fetch_array($raw_results)){
while($results2 = mysql_fetch_array($raw_results2)){
// $results = mysql_fetch_array($raw_results) puts data from database into
array, while it's valid it does the loop
// posts results gotten from database(title and text) you can also show id
($results['id'])
}{
echo " Total amount of money payed by " .$results['class']
." "."class is " . $results ['Total'] . " /=Tshs";
echo"<br>"; echo"<br>";
}
}
}
}
}
?>2:payment_one
<?php
//include mysql connect
if (isset($_GET['query']))
{
$query=$_GET['query'];
// Instructions if $_POST['value'] exist
}
// gets value sent over search form
$min_length = 3;
// you can set minimum length of the query if you want
if(strlen($query) >= $min_length){ // if query length is more or equal minimum
length then
$query = htmlspecialchars($query);
// changes characters used in html to their equivalents, for example: < to >
$query = mysql_real_escape_string($query);
// makes sure nobody uses SQL injection
$raw_results = mysql_query("SELECT
*,SUM(school_fee+trans_fee)
As Total FROM payment_one
WHERE (`class` LIKE '%".$query."%')") or die(mysql_error());
$raw_results2 = mysql_query("SELECT * FROM payment_one
WHERE (`class` LIKE '%".$query."%')") or die(mysql_error());
// * means that it selects all fields, you can also write: `id`, `title`, `text`
// articles is the name of our table
// '%$query%' is what we're looking for, % means anything, for example if $query
is Hello
// it will match "hello", "Hello man", "gogohello", if you want exact match use
`title`='$query'
// or if you want to match just full word so "gogohello" is out use '% $query %'
...OR ... '$query %' ... OR ... '% $query'
if(mysql_num_rows($raw_results) > 0){
if(mysql_num_rows($raw_results2) > 0){
// if one or more rows are returned do following
while($results = mysql_fetch_array($raw_results)){
while($results2 = mysql_fetch_array($raw_results2)){
// $results = mysql_fetch_array($raw_results) puts data from database into
array, while it's valid it does the loop
// posts results gotten from database(title and text) you can also show id
($results['id'])
}{
echo " Total amount of money payed by " .$results['class']
." "."class is " . $results ['Total'] . " /=Tshs";
echo"<br>"; echo"<br>";
}
}
}
}
}
?>3:payment_two
<?php
//include mysql connect
if (isset($_GET['query']))
{
$query=$_GET['query'];
// Instructions if $_POST['value'] exist
}
// gets value sent over search form
$min_length = 3;
// you can set minimum length of the query if you want
if(strlen($query) >= $min_length){ // if query length is more or equal minimum
length then
$query = htmlspecialchars($query);
// changes characters used in html to their equivalents, for example: < to >
$query = mysql_real_escape_string($query);
// makes sure nobody uses SQL injection
$raw_results = mysql_query("SELECT
*,SUM(school_fee+trans_fee)
As Total FROM payment_two
WHERE (`class` LIKE '%".$query."%')") or die(mysql_error());
$raw_results2 = mysql_query("SELECT * FROM payment_two
WHERE (`class` LIKE '%".$query."%')") or die(mysql_error());
// * means that it selects all fields, you can also write: `id`, `title`, `text`
// articles is the name of our table
// '%$query%' is what we're looking for, % means anything, for example if $query
is Hello
// it will match "hello", "Hello man", "gogohello", if you want exact match use
`title`='$query'
// or if you want to match just full word so "gogohello" is out use '% $query %'
...OR ... '$query %' ... OR ... '% $query'
if(mysql_num_rows($raw_results) > 0){
if(mysql_num_rows($raw_results2) > 0){
// if one or more rows are returned do following
while($results = mysql_fetch_array($raw_results)){
while($results2 = mysql_fetch_array($raw_results2)){
// $results = mysql_fetch_array($raw_results) puts data from database into
array, while it's valid it does the loop
// posts results gotten from database(title and text) you can also show id
($results['id'])
}{
echo " Total amount of money payed by " .$results['class']
." "."class is " . $results ['Total'] . " /=Tshs";
echo"<br>"; echo"<br>";
}
}
}
}
}
?>任何帮助我都会感谢你的。
回答 1
Stack Overflow用户
发布于 2013-11-03 14:28:08
如果我正确理解，您的三个表paymentpayment_two都有相同的列: id、idnumber、school_fee trans_fee。
您可以使用一个表，并通过引入一个新列( tablenum )来区分它们，这样就可以很容易地获得所需的内容。请注意id和tablenum都是主键(复合主键)。
新的表模式和数据将是(我不太确定您的idnumber列的用途)：
[payment]
id tablenum idnumber school_fee trans_fee
1 0 va03 10000 20000
1 1 va01 10000 30000
1 2 va02 40000 50000SQL示例：
SELECT
school_fee,
trans_fee,
(school_fee + trans_fee) as 'total'
FROM payment WHERE id=1页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/19753935
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