SQL 将变量定义为Table类型

DECLARE @t TABLE(a1 NVARCHAR(50),a2 INT,a3 DECIMAL(18,2),a4 DATETIME,a5 UNIQUEIDENTIFIER)
insert into @t(a1 ,a2 ,a3,a4,a5) values ('',1,11.22,GETDATE(),NEWID())
insert into @t(a1 ,a2 ,a3,a4,a5) values ('',1,11.22,GETDATE(),NEWID())
insert into @t(a1 ,a2 ,a3,a4,a5) values ('',1,11.22,GETDATE(),NEWID())
insert into @t(a1 ,a2 ,a3,a4,a5) values ('',1,11.22,GETDATE(),NEWID())
SELECT * FROM @t AS T