PHP语句在MYSQL中查询多张表 并显示在页面上
abc201202,abc201203,abc201204...表名按月建的表
我新手不知道怎么一次遍历多张表,提取MYSQL中的数据。
回复讨论(解决方案)
用for循环把sql语句包含在里面重复执行,不知道能不能行得通
多次取数据再进行处理吧
$table = array("abc201202","abc201203","abc201204");$result =array();foreach($table as $table_name) { $sql = "select * from ".$table_name; $rec =mysql_query($sql); while($row=mysql_fetch_row($rec)) { $result[] = $row; }}
PHP code
$table = array("abc201202","abc201203","abc201204");
$result =array();
foreach($table as $table_name) {
$sql = "select * from ".$table_name;
$rec =mysql_query($sql);
……
你这样取出来的数据 不能分页啊?
PHP code
$table = array("abc201202","abc201203","abc201204");
$result =array();
foreach($table as $table_name) {
$sql = "select * from ".$table_name;
$rec =mysql_query($sql);
……
你这样做可也遍历数据 ,但不能分页数据啊?
$select = array();$table = array("abc201202","abc201203","abc201204");foreach($table as $v) { $select[] = "(select * from $v)";}$sql = join(' UNION ', $select);$res = mysql_query($sql);
$table = array("abc201202","abc201203","abc201204");$result=array();$count = count($table);for ($i=0;$i
PHP code
$table = array("abc201202","abc201203","abc201204");
$result=array();
$count = count($table);
for ($i=0;$i $sql = $sql." select * from '".$table[$i]."' union all";
}
$s……
你的CODE我试了下,echo $sql;输出是:select * from 'abc201202' union all select * from 'abc201203' union all select * from 'abc201204' union all select * from ''
我修改了下输出变成了:select * from twebmailaction_201208 union all select * from twebmailaction_201209 union all select * from twebmailaction_201210 union all
我用echo $num = mysql_num_rows($sql); 没有结果。
PHP code
$select = array();
$table = array("abc201202","abc201203","abc201204");
foreach($table as $v) {
$select[] = "(select * from $v)";
}
$sql = join(' UNION ', $select);
$res = mysql_query……
用你的CODE我试了一下可以查询 几张表的数据条数和是对的。
但不知道怎么回事,显示数据框架有,分页好像是对的,就是没有数据库字段内容,
还有就是点击下一页后,提示:Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result resource in F:\www_local\G03\list5.php on line 88 并且显示数据的框架都没有了。
新手求教育
$table = array("abc201202","abc201203","abc201204");$result=array();$count = count($table)-1;//减去一个数组下标for ($i=0;$i
PHP code
$table = array("abc201202","abc201203","abc201204");
$result=array();
$count = count($table)-1;//减去一个数组下标
for ($i=0;$i $sql = $sql." select * from '".$table[$i]."' unio……
现在可以可以了。还有点问题:
1、分页好像还有点问题:$sql=$sql." select * from '".$table[$count]."'"." limit $page $pagesize";为了分页我加了limit。这样加对吗?
2、遍历循环我变了下,查询显示一个字段的值:
while($row=mysql_fetch_row($rec)){
echo "
".$row[Username];
}
输出就只有很多直线,没有字段的值?limit $page $pagesize改成limit $page,$pagesize试试
limit $page $pagesize改成limit $page,$pagesize试试
不是这个问题。我前面有这个语句:$page.=',';
现在主要是显示字段内容不知道怎么赋值?
PHP code
$select = array();
$table = array("abc201202","abc201203","abc201204");
foreach($table as $v) {
$select[] = "(select * from $v)";
}
$sql = join(' UNION ', $select);
$res = mysql_query……
就差指定字段显示的实现了!不知道怎么遍历指定字段:例如while($row=(mysql_fetch_row($res))){
echo $row[user];
}分页显示user这个字段
PHP code
$select = array();
$table = array("abc201202","abc201203","abc201204");
foreach($table as $v) {
$select[] = "(select * from $v)";
}
$sql = join(' UNION ', $select);
$res = mysql_query……
请问例如:while($row=(mysql_fetch_row($res))){
echo $row[user];
}像这样分页显示user这个字段怎么没有输出这样不好的,还是用php处理吧
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