用数百万行更新MySQL表

Question

I need to convert ip by INET_ATON() in mysql table have millions of rows

UPDATE `table` SET `ip` = INET_ATON(`ip`)

I need query to be fast and good performance

thank's

Answer 1

Well it seems you're trying to assign a numeric value to a char column. As MichaelH said, if you're going to use the numeric value more than the address value, then you should consider storing the number in that format.

However, you can store both values to improve query performance:

CREATE TABLE t (
  address char(15),
  number  int unsigned default 0
);

INSERT INTO t (address) VALUES
('255.255.255.255'),
('0.0.0.0'),
('1.0.0.0');

update t set number = inet_aton(address);
select * from t;

This would result in:

+-----------------+------------+
|     ADDRESS     |   NUMBER   |
+-----------------+------------+
| 255.255.255.255 | 4294967295 |
| 0.0.0.0         |          0 |
| 1.0.0.0         |   16777216 |
+-----------------+------------+

Answer 2

Can you not just use the ip2long() function in PHP when passing the IP address to the database?

And then when you want to return it, wrap the field in long2ip ?