sqlserver中All、Any和Some用法与区别

set nocount on
  
use tempdb
go
  
if (object_id ('t1') is not null)drop table t1
create table t1 (n int)
insert into t1 select 2 unionselect 3  
  
if (object_id ('t2') is not null)drop table t2
create table t2 (n int)
insert into t2 select 1 unionselect 2 union select 3 union select 4
  
-- t1表数据 2,3
-- t2表数据 1,2,3,4
-- '>all' 表示:t2表中列n的数据大于t1表中列n的数据的数，结果只有4.
select * from t2 where n > all(select n from t1 )    --4
select * from t2 where n > any(select n from t1 )    --3,4
select * from t2 where n > some(selectn from t1)      --3,4
  
select * from t2 where n = all(select n from t1 )    --无数据
select * from t2 where n = any(select n from t1 )    --2,3
select * from t2 where n = some(selectn from t1)      --2,3
  
select * from t2 where n < all(select n from t1 )    --1
select * from t2 where n < any(select n from t1 )    --1,2
select * from t2 where n < some(selectn from t1)      --1,2
  
select * from t2 where n <>all (select n from t1 )    --1,4
select * from t2 where n <>any (select n from t1 )    --1,2,3,4
select * from t2 where n <>some(select n from t1)      --1,2,3,4
set nocount off

select * from t2 a where not exists(select1 from t1 where n>=a.n) 

select * from t2 where  n > all(select n from t1)