phpcms SQL get调用判断两个条件怎么写

{pc:get sql="SELECT * FROM cad_picdown WHERE  username='$username'
status='99' ORDER BY id DESC"  num="8" }

请教下我要判断这两个条件该怎么写呢username='$username' status='99'

解决办法：上面少了个and
正确的写法：

{pc:get sql="SELECT * FROM cad_picdown WHERE  username='$username'
and status='99' ORDER BY id DESC"  num="8" }