表A
id name
1 A
2 B
3 C
表B
id test
2 A
4 B
我想要的结果是
id name test
1 A NULL
2 B A
3 C NULL
4 NULL B
该怎么写sql语句
------解决方案--------------------
- SQL code
if object_id('[TBA]') is not null drop table [TBA]gocreate table [TBA] (id int,name nvarchar(2))insert into [TBA]select 1,'A' union allselect 2,'B' union allselect 3,'C'if object_id('[TBB]') is not null drop table [TBB]gocreate table [TBB] (id int,test nvarchar(2))insert into [TBB]select 2,'A' union allselect 4,'B'select * from [TBA]select * from [TBB]SELECT ISNULL(TBA.id,TBB.id) AS id,NAME,testFROM dbo.TBAFULL JOIN TBB ON TBA.id = TBB.id/*id NAME test1 A NULL2 B A3 C NULL4 NULL B*/