SQL Mail is not a server program like SQL Server, that "listens" to a certain TCP/IP port (or more). It is a client program that _in the end connects_ to...
I think the speed depends on the storage size which is 9 bytes for decimal(18, 0) and 8 bytes for floa. I think comparing decimals will be somewhat slower (more...
I'm not sure, but maybe the number of transactions per second you read about, is obtained from a specific standard benchmark. Since not all transactions are the same, comparing the...