"AS" is optional when assigning an alias, so what you have there is the equivalent of SELECT Field1, Field2 AS Field3, Field4... <mutters to himself about how much he hates it when AS is intentionally omitted> (not this case, just in general)
"AS" is optional when assigning an alias, so what you have there is the equivalent of SELECT Field1, Field2 AS Field3, Field4... <mutters to himself about how much he hates it when AS is intentionally omitted> (not this case, just in general)