[Description] URI of the server of the connection used to execute the previous statement on. [Version] Since 1.1.0. [Parameter] 
last_used_connection
c o n n e c t e d _ h o s t
q u e r y
m a s t e r s
s l a v e s
l a s t _ u s e d _ c o n n e c t i o n
i n _ t r a n s a c t i o n