我有一个在sqlfiddle中工作的枢轴表代码,当我在phpmyadmin中将它带回我的数据库时,我似乎无法让查询正常工作。当我在我的localHost phpmyadmin中运行它时,查询如下所示:
SET @@group_concat_max_len = 5000;# MySQL returned an empty resultSET @sql = NULL;# MySQL returned an empty result set (i.e. zero rows).SET @
如何从SQL表中的列中获取所有数据,并将其与从表单中获取的数据进行比较?这是我到目前为止所知道的: if (mysqli_connect_errno()) echo "Failed to connect to MySQL$sql="INSERT INTO Profiles (firstName, lastName,
可能重复:
Warning: mysql_num_rows(): supplied argument is not a valid MySQL result resourcein /home/valerie2/public_html/elinkswap/snorris/filename.php on line 89
Warning: mysql_num_rows(): suppliedargument is not a valid MySQL</e