php mysql 多表查询 查询不出结果?
我的代码如下:
<!--Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--><?php /*connect database*/$link=mysql_connect("192.168.XX.XX:3306","root","root") or die("Could not connect");print "Connected successfully";mysql_select_db("jiradb") or die ("Could not select database");mysql_query("set names 'utf8'");/*execte SQL query*/$query="SELECT b.pname,a.pkey,a.summary,a.assigneeFROM jiraissue a, issuetype b,project cWHERE a.project=c.ID and b.ID=a.issuetype and c.pname='TEST';";$result=mysql_query($query,$link) or die("Query failed");/*print result in html*/MySQL_num_rows($result);while($row=mysql_fetch_array($result)){echo $row[0];}/*release resource */mysql_free_result($result);/*close link*/mysql_close($link);?>
<!--Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->$query="select * from jiraissue";
$result=mysql_query($query,$link) or die("Query failed");echo "1 ".mysql_error();/*print result in html*/MySQL_num_rows($result);echo "2 ".mysql_error();while($row=mysql_fetch_array($result)){echo $row[0];echo "3 ".mysql_error();}<div class="clear"> </div>