mysql查詢檢查多個不為空的列

Question

我想檢查多個非空列，就像我檢查多個空列：-

SELECT * FROM users WHERE "" IN(`profilepic2`,`bsector`,`gender`,`first_name`,`sur_name`,`phone`,`hphone`,`countryresd`,`passportnum`,`maritalstatus`,`haddress`,`countryofbus`,`maddress`,`paddress`)

現在我不想通過mysql查詢來清空列。

Answer 1

這應該可行。用您的必填列替換some_col 。

 SELECT * FROM users WHERE some_col IS NULL OR some_col = " ";

Answer 2

SELECT * FROM users where WHERE some_col！=“” AND some_col不為空；

Answer 3

$fields = mysql_query("SHOW columns FROM mytablename");
while($row = mysql_fetch_array($fields))
{$field_name[] = $row['Field'];
}
for($i=0; $i<sizeof($field_name; $i++;)){`enter code here`
"SELECT * FROM users WHERE '".$field_name[$i]."' IS NULL OR '".$field_name[$i]."' = ''";
}