I have a little bit complex MySQL query for me and i can't figure out how to write it without eating tons of memory. ( i don't really mind if it would )
I have the following table:
TABLE: users(id,ip)
------------------------------------
4BF1510 | 40.145.10.99 <-- SAME IP (A)
SAME ID --> 510SD55 | 65.12.105.42
SAME ID --> 510SD55 | 45.184.15.10
201505V | 40.145.10.99 <-- SAME IP (A)
984AZ6C | 72.98.45.76
| 10.15.78.10 <-- SAME IP (B)
| 10.15.78.10 <-- SAME IP (B)
SAME ID --> B1D56SX |
SAME ID --> B1D56SX |
I want a query that only fetchs 1 item per a unique id or ip, So:
4BF1510 | 40.145.10.99
510SD55 | 65.12.105.42
984AZ6C | 72.98.45.76
| 10.15.78.10
B1D56SX |
The Most important things:
Which means that the ID should have the first priority of trust, Because multiple users may use the same IP.
Any effective way to achieve that?
Tons of thanks.
What you are wanting to do can be accomplished using group_contact .
Example
SELECT id, GROUP_CONCAT (ip) as ips FROM logs group by id
edit: forgot group by
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