mysql查询检查多个非空列

Question

我想检查多个非空列，就像我检查多个空列一样： -

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

现在我不希望通过mysql查询清空列。

Answer 1

这应该是有效的。用您需要的列替换some_col。

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

Answer 2

SELECT * FROM users WHERE some_col！=＆＃34;＆＃34; AND some_col IS NOT NULL;

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]."' = ''";
}