我尝试从列"valor_premio“中获取avg,但是我有这个错误:
Warning: mysql_query() expects parameter 1 to be string, resourcegiven in /home/u566181585/public_html/index.php on line 61 Warning: mysql_fetch_array() expects parameter( "SELECT AVG(valor_premio)
我的代码如下:(select avg(stars) from LONG EXPRESSION where Condition < Y)(select avg(stars) fromLONG EXPRESSION where Condition > Y)select-
(select avg(stars) from X whe