1
希望你們好人！我在SELECT三個不同的表和SUM那裏總有一個大問題，以便我可以得到這三個表的總數。 表如下，我只是提一些領域：如何從三個不同的表中查詢總和的SELECT SUM php
1：支付
id idnumber school_fee trans_fee
1 va03 10000 20000
2：payment_one
id idnumber school_fee trans_fee
1 va01 10000 30000
3：payment_two
id idnumber school_fee trans_fee
1 va02 40000 50000
我已經從每張桌上得到'總計'，我想要的是將我得到的總和加總到從這三張表中刪除。
這裏我的php代碼;
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>";
}
}
}
}
}
?>
任何幫助I'will是令人欣慰的。
[請停止使用mysql_ *函數]（http://stackoverflow.com/q/12859942/1238019）在新代碼中，他們[正式棄用]（https://wiki.php.net/rfc/mysql_deprecation）。而不是，看看[準備好的陳述]（http://dev.mysql.com/doc/refman/5.0/en/sql-syntax-prepared-statements.html），並使用[Mysqli]（http：///php.net/manual/en/book.mysqli.php）或[PDO]（http://php.net/manual/en/book.pdo.php）。 – zessx
您是否意識到您發佈的三個腳本完全相同，除了查詢中提到的表名（'payment'，'payment_one'和'payment_two'）？另外，在我看來，擁有這樣的三張表是一個非常糟糕的主意，除非您使用的是舊式（現有）數據庫 - 在這種情況下，我確實會使用視圖表來統一它們。 –
是啊！是一樣的。表名除外 – Haika