Tags for union all
Union and Union All - processes
Greetings Experts,   Can you please explain the followingThe “union” command can be used to break up a large sql process or statement into several smaller sql processes or statements, which would run in parallel. But these could then cause spoolspace limit problems. “Union all” executes the sql’s single threaded  
union union all processes
Hi, I have a quesion. In case of huge data volume which one from below wil be better?   Insert into A ( aa,bb,cc ) sel aa,bb,cc from B
union msr union all