merge into 如何应用多个update
merge into table a
using
() b on a=b
when matched then
update set k=1 where;
update set m=2 where
when not matched then

如何可以让 when matched then 中使用多个update 语句

[解决办法]

引用:

merge into table a
using
() b on a=b
when matched then
update set k=1 where;
update set m=2 where
when not matched then

如何可以让 when matched then 中使用多个update 语句

merge into table a
using
() b on a=b
when matched then
 update set k=1 ， m=2 where;--这样不行么？？
 
when not matched then

[解决办法]

引用:

条件不一样，需要更新不同的字段，所以不能这样写

实在不行就分成多个MERGE来写吧
[解决办法]
merge into table a
using
() b on a=b
when matched then
update set k=(case when a=1 and b=2 then 1 else k end),
m=(case when a=2 and b=1 then 2 else m end) where...;

when not matched then