1.刷存量数据
merge into 格式如下
merge into table_name alias1
using(table | view | sub_query) alisa2
on (join condition)
when matched then
update table_name set col1 = xx
when not matched then
insert into...........
标签：name,into,when,Oracle,table,随笔,matched From： https://www.cnblogs.com/chenzhubing/p/17711845.html