[ticket/15941] Replace MAX SQL in functions_posting.php
Replace MAX SQL function with faster query using order by and limit.
The ajacent query could also be optimized to eliminate the usage of MAX.
Note that adding a compound key as suggested by EXPLAIN SQL yields an
improvement, but not nearly as fast as ORDER + LIMIT.
[ticket/15941] Replace MAX to speed up query in update_post_information
Replace MAX SQL function with faster query using order by and limit.
The ajacent query could also be optimized to eliminate the usage of MAX.
Note that adding a compound key as suggested by EXPLAIN SQL yields an
improvement, but not nearly as fast as ORDER + LIMIT.
