嵌套循环：
select * from workflowbase1 a inner loop join dbo.workflowinfo1 b
on a.id=b.workflowid and a.creater='402881411023dcc001102e3bbbc505c7'
合并连接
select * from workflowbase1 a inner merge join dbo.workflowinfo1 b
on a.id=b.workflowid and a.creater='402881411023dcc001102e3bbbc505c7'
hash连接
select * from workflowbase1 a inner hash join dbo.workflowinfo1 b
on a.id=b.workflowid and a.creater='402881411023dcc001102e3bbbc505c7'
