我从数据库表中提取所有内容并在php中显示特定数据。
到目前为止,我的所有代码都正常工作,我能够在php中显示所有内容,但我正在尝试制作另一个php文件,仅显示特定数据。例如,我希望它能够找到movieview
表中的所有内容,并且只显示playcount
等于或大于1的所有行数据,并按标题升序显示
$SQL = "select * from movieview WHERE playCount>=1 Order By c00 Asc";
$result = mysql_query($SQL);
while ( $db_field = mysql_fetch_assoc($result) ) {
$imdb = $db_field['c09'];
$run = $db_field['c11'];
$row = mysql_fetch_assoc($run);
$sum = $row['value_sum'];
现在我希望echo $sum;
将所有匹配c11
的结果中的playcount
的所有值加上等于或大于1的结果。我没有尝试过SQL的原因sum
是因为下面我显示了更多列,我认为这是select *
编辑:如果我执行以下操作:
$db_handle = mysql_connect($server, $username, $password);
$db_found = mysql_select_db($database, $db_handle);
if ($db_found) {
$SQL = "select * from movieview WHERE playCount>=1 Order By c00 Asc";
$result = mysql_query($SQL);
while ( $db_field = mysql_fetch_assoc($result) ) {
$imdb = $db_field['c09'];
$run = $db_field['c11'];
echo $run;
它会显示播放次数为1或更多的所有项目的时间,这是好的。现在我只是希望总共得到所有那些$run
值的总和并回应它。我还有额外的表在php文件中调用,只是一个注释,如mid,idb和c00。
现在,如果我这样做: $ db_handle = mysql_connect($ server,$ username,$ password); $ db_found = mysql_select_db($ database,$ db_handle);
if ($db_found) {
$SQL = "select SUM(c11) AS totalrun from movieview WHERE playCount>=1 Order By c00 Asc ";
$result = mysql_query($SQL);
while ( $db_field = mysql_fetch_assoc($result) ) {
$imdb = $db_field['c09'];
$run = $db_field['totalrun'];
我能够回应总数,是的!但是我无法调用上面列出的其他列。
答案 0 :(得分:1)
如果我理解你的问题,你可以这样做:
LinearLayoutManager mLayoutManager;
recycle = (RecyclerView) findViewById(R.id.recycle);
mLayoutManager = new LinearLayoutManager(this);
recycle.setLayoutManager(mLayoutManager);
recycle.addOnScrollListener(new RecyclerView.OnScrollListener() {
boolean enable = false;
@Override
public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
super.onScrolled(recyclerView, dx, dy);
if(recycle != null && mLayoutManager.getChildCount() > 0){
boolean firstItemVisible = mLayoutManager.findFirstVisibleItemPosition() == 0;
boolean topOfFirstItemVisible = mLayoutManager.getChildAt(0).getTop() == 0;
Log.v("this",firstItemVisible + " "+topOfFirstItemVisible);
//boolean topOfFirstItemVisible = recycle.getChildAt(0).getTop() == 0;
enable = firstItemVisible && topOfFirstItemVisible;
}
mSwipeRefreshLayout.setEnabled(enable);
}
});
}
答案 1 :(得分:1)
如果你只是继续添加总运行它应该工作,如果我已正确理解
$db_handle = mysql_connect($server, $username, $password);
$db_found = mysql_select_db($database, $db_handle);
if ($db_found) {
$SQL = "select * from movieview WHERE playCount>=1 Order By c00 Asc";
$result = mysql_query($SQL);
$run=0;
while ( $db_field = mysql_fetch_assoc($result) ) {
$imdb = $db_field['c09'];
$run = $run + $db_field['c11'];
}
echo $run;
答案 2 :(得分:0)
我能够通过创建另一个SQL查询来实现。不确定它是多么合适但是有效。唯一缺少的是每个结果只计算1次,所以如果一个2或更多的游戏数量只被视为1.将在以后工作,除非你可以回复一个修复:D
while ( $db_field = mysql_fetch_array($result) ) {
$run = $db_field['SUM(c11)'];