我已创建一个数据库与三个表。我有一个表“字段”,其中有一个从1到5的id_field和一个具有开始和结束时间的表名槽。当我想显示所有可用的字段和时间是好的,但我希望显示id值为1的字段仍显示所有字段!!!!!MY SQL比较语句!不起作用的比较声明
这里是我的代码:
echo("<select name='selSlot'>");
$mysql_link = mysql_connect("localhost","root","*********");
$db_select = mysql_select_db("nuevo", $mysql_link);
$query = "SELECT * FROM field WHERE id_field = 1 CROSS JOIN slot WHERE (id_field,id_slot) ".
"NOT IN(Select field_slot,res_slot From reservation WHERE res_date = '"
.$today['year']."-".$today['mon']."-".$today['mday']."') ORDER by id_field,id_slot";
$result = mysql_query($query)
or die ("Query '$query' failed with error message: " . mysql_error());
$row = mysql_fetch_assoc($result);
echo "apoel";
while ($row) {
echo("<option value='" .$row['id_field'].",".$row['id_slot']."'>".$row['description'].
" ".$row['start_time']."-".$row['end_time']." </option>");
$row = mysql_fetch_assoc($result);
}
echo("</select>");
我不知道为什么它不给我看只有场ID之一,仍然显示我的所有字段!!!!
您需要解释什么问题更好。请阅读本指南如何提出更好的问题关于SO http://stackoverflow.com/questions/how-to-ask – Relequestual 2012-02-12 00:01:03