Multiple lookup entries in an SQL table

[Antonio Leding]

Hello Postfix Community,

I wanted to ask about the expected behavior if there are multiple 
entries in an SQL table for the same lookup (IP address, network, 
domain, etc.) which specify either the same or different actions 
(REJECT, OK, etc.).

- - -

#### example #1

1.2.3.4 OK
1.2.3.4 REJECT

#### example #2

example.com REJECT
example.com REJECT

#### example #3

5.6.7.8 OK
5.6.7.8 OK

- - -

I know that access(5) states the specific search order for the various 
allowable lookup items but I did not find any discussion as to what 
happens when there is more than one identical searchable item entry.

Thanks in advance…