[development] Restricting hook_db_rewrite_sql

[Rob Thorne]

Earl Miles wrote:
>
> That's primarily because most node queries are type agnostic. That's 
> why there is a node_access table.
>
Well, yeah.  Which I'm using:  I've defined a realm field for 
node_access for what I'm doing, and among other things, I'm using 
hook_db_rewrite_sql to use it;  
civinode_get_accesses_for_user($user->uid) identifies which of these 
node_access fields is relevant to the current user.

The documentation does not make it clear what it means to be a 
$primary_table,  although it would help if it did.  I only use the field 
because in most of the cases I actually want to affect,  I assume that 
$primary_table is either "node" or an alias to it.  This particular 
query is failing because Moshe is doing his rewrite with "og" as the 
table.  I don't need or want to modify his query, but only discovered 
the problem via the error logs.

Rob