sql server merge into 与update 批量更新
2021/8/23
declare @index int;
begin
set @index=0;
while @index<1000000
begin
insert into teptable values(@index,STR(@index)+'name',str(@index)+'appname');
set @index=@index+1;
end
end
2. merge into sql 更新语句
merge into teptable1 as t1
using teptable1 as t2
on t1.id=t2.id
when matched then
update set t1.name=t2.appname
when not matched then
insert
values (t2.id,t2.name,t2.appname);