計算欄位次數
Group By 將欄位分組
<?php
"Select 欄位名稱,Count(*) From table WHERE 指定 Group By 欄位名稱"
$data_BDS_Meeting_Proceedings = mysql_fetch_row(mysql_query("Select Meeting_Type,Count(*) From Meeting_Proceedings_And_Other WHERE Meeting_Type ='BDS' AND Professor_Id= '$teacherID' Group By Meeting_Type", $conn));
?>
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