Question

All,

I’m wondering if this is a MySQL bug, but since I’ve seen others playing with larger numbers than this, I’m thinking I’m doing something wrong here.

Here is my table structure for the table I’m querying:

mysql> describe ipspace6\G
*************************** 1. row ***************************
Field: id
Type: decimal(39,0) unsigned
Null: NO
Key:
Default: NULL
Extra:
*************************** 2. row ***************************
Field: addr
Type: decimal(39,0) unsigned
Null: NO
Key: PRI
Default: 0
Extra:
*************************** 3. row ***************************
Field: netmask
Type: decimal(39,0) unsigned
Null: NO
Key:
Default: 0
Extra:
*************************** 4. row ***************************
Field: subnet
Type: int(4)
Null: NO
Key:
Default: NULL
Extra:


Now, I run a simple SELECT statement against the “id” column:


mysql> SELECT id FROM ipspace6 WHERE id='50552019118453823914642686339427860480';
+----------------------------------------+
| id |
+----------------------------------------+
| 50552019118453823730175245602332344320 |
| 50552019118453823730175245602332344320 |
| 50552019118453823914642686339427860480 |
| 50552019118453823914642686339427860480 |
+----------------------------------------+


…What the heck is going on here? Two of these results are valid, and two definitely are not.

It’s not like I’m doing some super-complex nested query or anything, this is simple stuff, and it’s driving me insane.

Help, anyone?

Answer 1

Remove the quotes. When you operate with any kind of numerics you should always use numbers, not strings.